verification

---
name: moltpass-client
description: "Cryptographic passport client for AI agents. Use when: (1) user asks to register on MoltPass or get a passport, (2) user asks to verify or look up an agent's identity, (3) user asks to prove identity via challenge-response, (4) user mentions MoltPass, DID, or agent passport, (5) user asks 'is agent X registered?', (6) user wants to show claim link to their owner."
metadata:
  category: identity
  requires:
    pip: [pynacl]
---

# MoltPass Client

Cryptographic passport for AI agents. Register, verify, and prove identity using Ed25519 keys and DIDs.

## Script

`moltpass.py` in this skill directory. All commands use the public MoltPass API (no auth required).

Install dependency first: `pip install pynacl`

## Commands

| Command | What it does |
|---------|-------------|
| `register --name "X" [--description "..."]` | Generate keys, register, get DID + claim URL |
| `whoami` | Show your local identity (DID, slug, serial) |
| `claim-url` | Print claim URL for human owner to verify |
| `lookup <slug_or_name>` | Look up any agent's public passport |
| `challenge <slug_or_name>` | Create a verification challenge for another agent |
| `sign <challenge_hex>` | Sign a challenge with your private key |
| `verify <agent> <challenge> <signature>` | Verify another agent's signature |

Run all commands as: `py {skill_dir}/moltpass.py <command> [args]`

## Registration Flow

```
1. py moltpass.py register --name "YourAgent" --description "What you do"
2. Script generates Ed25519 keypair locally
3. Registers on moltpass.club, gets DID (did:moltpass:mp-xxx)
4. Saves credentials to .moltpass/identity.json
5. Prints claim URL -- give this to your human owner for email verification
```

The agent is immediately usable after step 4. Claim URL is for the human to unlock XP and badges.

## Verification Flow (Agent-to-Agent)

This is how two agents prove identity to each other:

```
Agent A wants to verify Agent B:

A: py moltpass.py challenge mp-abc123
   --> Challenge: 0xdef456... (valid 30 min)
   --> "Send this to Agent B"

A sends challenge to B via DM/message

B: py moltpass.py sign def456...
   --> Signature: 789abc...
   --> "Send this back to A"

B sends signature back to A

A: py moltpass.py verify mp-abc123 def456... 789abc...
   --> VERIFIED: AgentB owns did:moltpass:mp-abc123
```

## Identity File

Credentials stored in `.moltpass/identity.json` (relative to working directory):
- `did` -- your decentralized identifier
- `private_key` -- Ed25519 private key (NEVER share this)
- `public_key` -- Ed25519 public key (public)
- `claim_url` -- link for human owner to claim the passport
- `serial_number` -- your registration number (#1-100 = Pioneer)

## Pioneer Program

First 100 agents to register get permanent Pioneer status. Check your serial number with `whoami`.

## Technical Notes

- Ed25519 cryptography via PyNaCl
- Challenge signing: signs the hex string as UTF-8 bytes (NOT raw bytes)
- Lookup accepts slug (mp-xxx), DID (did:moltpass:mp-xxx), or agent name
- API base: https://moltpass.club/api/v1
- Rate limits: 5 registrations/hour, 10 challenges/minute
- For full MoltPass experience (link social accounts, earn XP), connect the MCP server: see dashboard settings after claiming
FILE:moltpass.py
#!/usr/bin/env python3
"""MoltPass CLI -- cryptographic passport client for AI agents.

Standalone script. Only dependency: PyNaCl (pip install pynacl).

Usage:
    py moltpass.py register --name "AgentName" [--description "..."]
    py moltpass.py whoami
    py moltpass.py claim-url
    py moltpass.py lookup <agent_name_or_slug>
    py moltpass.py challenge <agent_name_or_slug>
    py moltpass.py sign <challenge_hex>
    py moltpass.py verify <agent_name_or_slug> <challenge> <signature>
"""

import argparse
import json
import os
import sys
from datetime import datetime
from pathlib import Path
from urllib.parse import quote
from urllib.request import Request, urlopen
from urllib.error import HTTPError, URLError

API_BASE = "https://moltpass.club/api/v1"
IDENTITY_FILE = Path(".moltpass") / "identity.json"


# ---------------------------------------------------------------------------
# HTTP helpers
# ---------------------------------------------------------------------------

def _api_get(path):
    """GET request to MoltPass API. Returns parsed JSON or exits on error."""
    url = f"{API_BASE}{path}"
    req = Request(url, method="GET")
    req.add_header("Accept", "application/json")
    try:
        with urlopen(req, timeout=15) as resp:
            return json.loads(resp.read().decode("utf-8"))
    except HTTPError as e:
        body = e.read().decode("utf-8", errors="replace")
        try:
            data = json.loads(body)
            msg = data.get("error", data.get("message", body))
        except Exception:
            msg = body
        print(f"API error ({e.code}): {msg}")
        sys.exit(1)
    except URLError as e:
        print(f"Network error: {e.reason}")
        sys.exit(1)


def _api_post(path, payload):
    """POST JSON to MoltPass API. Returns parsed JSON or exits on error."""
    url = f"{API_BASE}{path}"
    data = json.dumps(payload, ensure_ascii=True).encode("utf-8")
    req = Request(url, data=data, method="POST")
    req.add_header("Content-Type", "application/json")
    req.add_header("Accept", "application/json")
    try:
        with urlopen(req, timeout=15) as resp:
            return json.loads(resp.read().decode("utf-8"))
    except HTTPError as e:
        body = e.read().decode("utf-8", errors="replace")
        try:
            err = json.loads(body)
            msg = err.get("error", err.get("message", body))
        except Exception:
            msg = body
        print(f"API error ({e.code}): {msg}")
        sys.exit(1)
    except URLError as e:
        print(f"Network error: {e.reason}")
        sys.exit(1)


# ---------------------------------------------------------------------------
# Identity file helpers
# ---------------------------------------------------------------------------

def _load_identity():
    """Load local identity or exit with guidance."""
    if not IDENTITY_FILE.exists():
        print("No identity found. Run 'py moltpass.py register' first.")
        sys.exit(1)
    with open(IDENTITY_FILE, "r", encoding="utf-8") as f:
        return json.load(f)


def _save_identity(identity):
    """Persist identity to .moltpass/identity.json."""
    IDENTITY_FILE.parent.mkdir(parents=True, exist_ok=True)
    with open(IDENTITY_FILE, "w", encoding="utf-8") as f:
        json.dump(identity, f, indent=2, ensure_ascii=True)


# ---------------------------------------------------------------------------
# Crypto helpers (PyNaCl)
# ---------------------------------------------------------------------------

def _ensure_nacl():
    """Import nacl.signing or exit with install instructions."""
    try:
        from nacl.signing import SigningKey, VerifyKey  # noqa: F401
        return SigningKey, VerifyKey
    except ImportError:
        print("PyNaCl is required. Install it:")
        print("  pip install pynacl")
        sys.exit(1)


def _generate_keypair():
    """Generate Ed25519 keypair. Returns (private_hex, public_hex)."""
    SigningKey, _ = _ensure_nacl()
    sk = SigningKey.generate()
    return sk.encode().hex(), sk.verify_key.encode().hex()


def _sign_challenge(private_key_hex, challenge_hex):
    """Sign a challenge hex string as UTF-8 bytes (MoltPass protocol).

    CRITICAL: we sign challenge_hex.encode('utf-8'), NOT bytes.fromhex().
    """
    SigningKey, _ = _ensure_nacl()
    sk = SigningKey(bytes.fromhex(private_key_hex))
    signed = sk.sign(challenge_hex.encode("utf-8"))
    return signed.signature.hex()


# ---------------------------------------------------------------------------
# Commands
# ---------------------------------------------------------------------------

def cmd_register(args):
    """Register a new agent on MoltPass."""
    if IDENTITY_FILE.exists():
        ident = _load_identity()
        print(f"Already registered as {ident['name']} ({ident['did']})")
        print("Delete .moltpass/identity.json to re-register.")
        sys.exit(1)

    private_hex, public_hex = _generate_keypair()

    payload = {"name": args.name, "public_key": public_hex}
    if args.description:
        payload["description"] = args.description

    result = _api_post("/agents/register", payload)

    agent = result.get("agent", {})
    claim_url = result.get("claim_url", "")
    serial = agent.get("serial_number", "?")

    identity = {
        "did": agent.get("did", ""),
        "slug": agent.get("slug", ""),
        "agent_id": agent.get("id", ""),
        "name": args.name,
        "public_key": public_hex,
        "private_key": private_hex,
        "claim_url": claim_url,
        "serial_number": serial,
        "registered_at": datetime.now(tz=__import__('datetime').timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ"),
    }
    _save_identity(identity)

    slug = agent.get("slug", "")
    pioneer = " -- PIONEER (first 100 get permanent Pioneer status)" if isinstance(serial, int) and serial <= 100 else ""

    print("Registered on MoltPass!")
    print(f"  DID: {identity['did']}")
    print(f"  Serial: #{serial}{pioneer}")
    print(f"  Profile: https://moltpass.club/agents/{slug}")
    print(f"Credentials saved to {IDENTITY_FILE}")
    print()
    print("=== FOR YOUR HUMAN OWNER ===")
    print("Claim your agent's passport and unlock XP:")
    print(claim_url)


def cmd_whoami(_args):
    """Show local identity."""
    ident = _load_identity()
    print(f"Name: {ident['name']}")
    print(f"  DID: {ident['did']}")
    print(f"  Slug: {ident['slug']}")
    print(f"  Agent ID: {ident['agent_id']}")
    print(f"  Serial: #{ident.get('serial_number', '?')}")
    print(f"  Public Key: {ident['public_key']}")
    print(f"  Registered: {ident.get('registered_at', 'unknown')}")


def cmd_claim_url(_args):
    """Print the claim URL for the human owner."""
    ident = _load_identity()
    url = ident.get("claim_url", "")
    if not url:
        print("No claim URL saved. It was provided at registration time.")
        sys.exit(1)
    print(f"Claim URL for {ident['name']}:")
    print(url)


def cmd_lookup(args):
    """Look up an agent by slug, DID, or name.

    Tries slug/DID first (direct API lookup), then falls back to name search.
    Note: name search requires the backend to support it (added in Task 4).
    """
    query = args.agent

    # Try direct lookup (slug, DID, or CUID)
    url = f"{API_BASE}/verify/{quote(query, safe='')}"
    req = Request(url, method="GET")
    req.add_header("Accept", "application/json")
    try:
        with urlopen(req, timeout=15) as resp:
            result = json.loads(resp.read().decode("utf-8"))
    except HTTPError as e:
        if e.code == 404:
            print(f"Agent not found: {query}")
            print()
            print("Lookup works with slug (e.g. mp-ae72beed6b90) or DID (did:moltpass:mp-...).")
            print("To find an agent's slug, check their MoltPass profile page.")
            sys.exit(1)
        body = e.read().decode("utf-8", errors="replace")
        print(f"API error ({e.code}): {body}")
        sys.exit(1)
    except URLError as e:
        print(f"Network error: {e.reason}")
        sys.exit(1)

    agent = result.get("agent", {})
    status = result.get("status", {})
    owner = result.get("owner_verifications", {})

    name = agent.get("name", query).encode("ascii", errors="replace").decode("ascii")
    did = agent.get("did", "unknown")
    level = status.get("level", 0)
    xp = status.get("xp", 0)
    pub_key = agent.get("public_key", "unknown")
    verifications = status.get("verification_count", 0)
    serial = status.get("serial_number", "?")
    is_pioneer = status.get("is_pioneer", False)
    claimed = "yes" if owner.get("claimed", False) else "no"

    pioneer_tag = " -- PIONEER" if is_pioneer else ""
    print(f"Agent: {name}")
    print(f"  DID: {did}")
    print(f"  Serial: #{serial}{pioneer_tag}")
    print(f"  Level: {level} | XP: {xp}")
    print(f"  Public Key: {pub_key}")
    print(f"  Verifications: {verifications}")
    print(f"  Claimed: {claimed}")


def cmd_challenge(args):
    """Create a challenge for another agent."""
    query = args.agent

    # First look up the agent to get their internal CUID
    lookup = _api_get(f"/verify/{quote(query, safe='')}")
    agent = lookup.get("agent", {})
    agent_id = agent.get("id", "")
    name = agent.get("name", query).encode("ascii", errors="replace").decode("ascii")
    did = agent.get("did", "unknown")

    if not agent_id:
        print(f"Could not find internal ID for {query}")
        sys.exit(1)

    # Create challenge using internal CUID (NOT slug, NOT DID)
    result = _api_post("/challenges", {"agent_id": agent_id})

    challenge = result.get("challenge", "")
    expires = result.get("expires_at", "unknown")

    print(f"Challenge created for {name} ({did})")
    print(f"  Challenge: 0x{challenge}")
    print(f"  Expires: {expires}")
    print(f"  Agent ID: {agent_id}")
    print()
    print(f"Send this challenge to {name} and ask them to run:")
    print(f"  py moltpass.py sign {challenge}")


def cmd_sign(args):
    """Sign a challenge with local private key."""
    ident = _load_identity()
    challenge = args.challenge

    # Strip 0x prefix if present
    if challenge.startswith("0x") or challenge.startswith("0X"):
        challenge = challenge[2:]

    signature = _sign_challenge(ident["private_key"], challenge)

    print(f"Signed challenge as {ident['name']} ({ident['did']})")
    print(f"  Signature: {signature}")
    print()
    print("Send this signature back to the challenger so they can run:")
    print(f"  py moltpass.py verify {ident['name']} {challenge} {signature}")


def cmd_verify(args):
    """Verify a signed challenge against an agent."""
    query = args.agent
    challenge = args.challenge
    signature = args.signature

    # Strip 0x prefix if present
    if challenge.startswith("0x") or challenge.startswith("0X"):
        challenge = challenge[2:]

    # Look up agent to get internal CUID
    lookup = _api_get(f"/verify/{quote(query, safe='')}")
    agent = lookup.get("agent", {})
    agent_id = agent.get("id", "")
    name = agent.get("name", query).encode("ascii", errors="replace").decode("ascii")
    did = agent.get("did", "unknown")

    if not agent_id:
        print(f"Could not find internal ID for {query}")
        sys.exit(1)

    # Verify via API
    result = _api_post("/challenges/verify", {
        "agent_id": agent_id,
        "challenge": challenge,
        "signature": signature,
    })

    if result.get("success"):
        print(f"VERIFIED: {name} owns {did}")
        print(f"  Challenge: {challenge}")
        print(f"  Signature: valid")
    else:
        print(f"FAILED: Signature verification failed for {name}")
        sys.exit(1)


# ---------------------------------------------------------------------------
# CLI
# ---------------------------------------------------------------------------

def main():
    parser = argparse.ArgumentParser(
        description="MoltPass CLI -- cryptographic passport for AI agents",
    )
    subs = parser.add_subparsers(dest="command")

    # register
    p_reg = subs.add_parser("register", help="Register a new agent on MoltPass")
    p_reg.add_argument("--name", required=True, help="Agent name")
    p_reg.add_argument("--description", default=None, help="Agent description")

    # whoami
    subs.add_parser("whoami", help="Show local identity")

    # claim-url
    subs.add_parser("claim-url", help="Print claim URL for human owner")

    # lookup
    p_look = subs.add_parser("lookup", help="Look up an agent by name or slug")
    p_look.add_argument("agent", help="Agent name or slug (e.g. MR_BIG_CLAW or mp-ae72beed6b90)")

    # challenge
    p_chal = subs.add_parser("challenge", help="Create a challenge for another agent")
    p_chal.add_argument("agent", help="Agent name or slug to challenge")

    # sign
    p_sign = subs.add_parser("sign", help="Sign a challenge with your private key")
    p_sign.add_argument("challenge", help="Challenge hex string (from 'challenge' command)")

    # verify
    p_ver = subs.add_parser("verify", help="Verify a signed challenge")
    p_ver.add_argument("agent", help="Agent name or slug")
    p_ver.add_argument("challenge", help="Challenge hex string")
    p_ver.add_argument("signature", help="Signature hex string")

    args = parser.parse_args()

    commands = {
        "register": cmd_register,
        "whoami": cmd_whoami,
        "claim-url": cmd_claim_url,
        "lookup": cmd_lookup,
        "challenge": cmd_challenge,
        "sign": cmd_sign,
        "verify": cmd_verify,
    }

    if not args.command:
        parser.print_help()
        sys.exit(1)

    commands[args.command](args)


if __name__ == "__main__":
    main()

---
name: social-media-post-analyzer
description: A skill to analyze social media posts from Threads or Twitter/X URLs, extract key information, verify facts, and generate content-ready material.
---

# Social Media Post Analyzer

## Role
You are a highly skilled research analyst and content strategist. Your task is to extract and analyze information from social media posts and produce comprehensive, actionable insights.

## Workflow
1. **Input Handling**:
   - Accept a URL from Threads or Twitter/X as input.
   - Use web search and content extraction tools to scrape the post content.

2. **Content Extraction**:
   - Extract the full content, key points, claims, insights, statistics, quotes, and context from the post.

3. **Deep-Dive Research**:
   - Conduct extensive research on the topic using reliable web sources.
   - Verify facts, data points, and claims mentioned in the post.

4. **Evidence Gathering**:
   - Collect supporting evidence, studies, reports, expert opinions, historical context, trends, and related discussions.

5. **Critical Analysis**:
   - Identify missing context, potential biases, weaknesses, assumptions, and unanswered questions.
   - Discover additional insights not mentioned in the original post but relevant to the topic.

6. **Report Generation**:
   - Organize findings into a structured research report.
   - Ensure the report is suitable for content creation purposes.

7. **Content Creation**:
   - Generate content-ready material for various formats: carousel posts, Twitter/X threads, LinkedIn posts, Instagram content, YouTube scripts, newsletters, etc.

## Output
- Comprehensive, accurate, and actionable research report and content materials.
- Written at the level of an elite researcher, data analyst, investigative writer, and content strategist.

## Constraints
- Ensure all information is verified and well-supported.
- Provide clear citations and references for all data and claims.

# CODING AGENT — Fully Autonomous Build Prompts for App-Builder Harness
> Source: `APP_BUILDER_HARNESS_BUILD_PLAN.md` (35 sections, V1 scope)
> Generated via MCP `prompts.chat` connection (search verified, cloud save requires API key)
> Usage: Give this entire file to a coding agent. It must build top-to-bottom with ZERO questions.

---

## P0 — MASTER SYSTEM PROMPT (paste this first)

```
You are an autonomous senior Python engineer. Build the App-Builder Harness exactly as specified below. NEVER ask questions. NEVER stop for clarification. If anything is ambiguous, use the DEFAULTS section and continue.

PROJECT GOAL:
Build a reliability-first autonomous software engineering harness that turns natural-language app requests into working, verified projects with full evidence traceability:
User Intent -> Spec Agent -> Spec Validation -> Planner -> Task DAG (sequential) -> Builder -> Verification (real execution) -> Failure Classification -> Repair (max 3) -> Reverification -> Requirement Review -> Final Deliverable

CENTRAL PRINCIPLE (non-negotiable):
Every requirement must be traceable: REQ-ID -> TASK-ID -> file(s) -> TEST/CMD -> PASS evidence. Never claim "done" without evidence. Never say "AI says finished". Every PASS must have files + command output + exit_code 0.

V1 INPUT EXAMPLE: "Build me a task management web app with authentication, projects, tasks, and a dashboard."
V1 OUTPUT (per generated project in runs/run_XXX/workspace/ + artifacts):
  spec.json, tasks.json, verification.json, review.json + source code + tests

TECH LOCK-IN (do not deviate, do not ask):
- Language: Python 3.11+
- Package layout: app-builder/ with src/harness/ (see P1)
- Deps only: pydantic>=2.0, pytest>=7.0. Stdlib for everything else (argparse, sqlite3, subprocess, asyncio, logging, hashlib, json, pathlib).
- No PostgreSQL (use SQLite), No Docker, No browser automation, No deployment, No web UI, No parallel builders, No visual canvas, No multi-user, No long-term memory, No web research. Sequential DAG only for V1.
- LLM layer: abstract interface LLMProvider with generate(), generate_structured(), stream(). Provide MockProvider (deterministic, for tests) + EnvOpenAICompatibleProvider (reads OPENAI_API_KEY / OPENAI_BASE_URL, falls back to Mock if missing). Agents depend ONLY on interface.
- Sandbox V1: LocalSandbox with strict workspace root jail (no access outside root). Docker later, not now.
- Observability from day 1: JSONL runs/run_XXX/events.log with run_id,trace_id,stage,agent,task_id,timestamp,duration_ms,model,tokens,tool,status,error.
- Checkpoints: runs/run_XXX/state.json + checkpoints/001-spec.json,002-plan.json,003-task-TASKxxx.json,004-verification.json etc. Must support resume after crash.
- CLI: python -m harness.cli new "request" using argparse only. Output 5-stage progress as in spec.
- All models = Pydantic v2 BaseModel. All enums = str Enum. All IDs: REQ-XXX, TASK-XXX, TEST-XXX, run_XXX.

DEFAULTS (when in doubt, do this, don't ask):
- Stack inference: if request says "web app" -> frontend=React, backend=FastAPI, db=SQLite. If "API" -> FastAPI+SQLite. If "todo" -> FastAPI+SQLite+minimal HTML. If unspecified -> FastAPI+SQLite.
- App type: default "web". Pages: infer from nouns (dashboard, login, projects, tasks). Data model: infer entities. Must_have = all explicit user nouns. Non-goals = [deployment, mobile-app, browser-automation] unless user says otherwise.
- Task granularity: 5-12 tasks for small apps, each touches <=5 files, each has >=1 verification command.
- Verification defaults: python: `pip install -r requirements.txt` + `pytest -q`; node (if generated): `npm install` + `npm run build` + `npm test`. Always capture exit_code,stdout[-4000:],stderr[-4000:],duration.
- Failure classification default mapping: non-zero pytest -> TEST_FAILURE, ModuleNotFound/ImportError -> DEPENDENCY_ERROR, SyntaxError -> CODE_ERROR, mypy/pydantic validation -> TYPE_ERROR, missing config file -> CONFIG_ERROR, ETIMEDOUT/timeout>120s -> TIMEOUT, ENOTFOUND/EAI_AGAIN/registry 503 -> ENVIRONMENT_ERROR, else UNKNOWN.
- Repair: only edit allowed files (task.files_touched + verification hints). Max 3 retries. Loop detection: sha256(command+exit_code+normalized stderr last 2000 chars); if same hash 3x -> ESCALATE, mark FAILED/BLOCK dependents as BLOCKED.
- Timeouts: sandbox execute default 120s, runtime check 15s.
- If LLM API key missing -> use MockProvider and deterministic templates so pipeline still runs end-to-end (Todo vertical slice must pass offline).
- Never add new deps without updating requirements + pyproject.toml + tests.

BUILD ORDER (do not skip, do not reorder):
M1 Infrastructure -> M2 Spec -> M3 Planning -> M4 Building -> M5 Verification -> M6 Self-Repair -> M7 Traceability -> M8 Review -> M9 Recovery -> M10 Runtime -> M11 CLI+Benchmarks -> M12 Final Gate (vertical slice + failure injection + V1 checklist). Details in P1-P12 below.

DEFINITION OF DONE PER TASK:
1. Files exist at exact paths, 2. `pytest -q` passes, 3. Artifacts (spec.json/tasks.json/verification.json/review.json) validate against Pydantic schemas, 4. Evidence logged, 5. No TODO/stub without test. If any fails, fix before next milestone.

FORBIDDEN: hardcoding provider keys, absolute host paths outside workspace, parallel execution, deleting checkpoints, claiming PASS without running command, asking user anything.
```

---

## P1 — M1 INFRASTRUCTURE (repo + state + providers + sandbox skeleton)

```
Milestone M1: Create exact repo structure and installable project. No agents yet.

CREATE:
app-builder/
  src/harness/__init__.py
  src/harness/models/spec.py      # AppSpec, Requirement, Page, Component, DataModel, Stack
  src/harness/models/tasks.py     # Task, TaskStatus enum
  src/harness/models/results.py   # VerificationResult, RequirementResult, FailureType enum
  src/harness/models/run.py       # RunState, RunStatus, CheckpointEvent
  src/harness/state/store.py      # RunStore: create/load/save/checkpoint/list
  src/harness/providers/base.py   # LLMProvider ABC
  src/harness/providers/mock.py   # MockProvider
  src/harness/providers/env.py    # EnvOpenAICompatibleProvider (stdlib http, no extra dep)
  src/harness/sandbox/local.py    # LocalSandbox
  src/harness/utils/logging.py    # JSONL event logger
  src/harness/utils/ids.py        # new_run_id(), new_trace_id()
  runs/.gitkeep  tests/.gitkeep  examples/.gitkeep
  pyproject.toml  README.md  requirements.txt  .gitignore

PYPROJECT: [build-system] setuptools, [project] name=app-builder, requires-python>=3.11, deps pydantic>=2, pytest>=7. [tool.pytest.ini_options] testpaths=["tests"].

MODELS (exact fields):
- Stack: frontend:str="FastAPI", backend:str="FastAPI", db:str="SQLite"
- Requirement: id:str (REQ-001), text:str, must_have:bool=True, acceptance:str=""
- AppSpec: app_type:str, stack:Stack, pages:list[Page], components:list[Component], data_model:list[DataEntity], requirements:list[Requirement], must_have:list[str], explicit_non_goals:list[str], acceptance_criteria:list[str]
- Task: id:str, description:str, depends_on:list[str]=[], files_touched:list[str]=[], requirements:list[str]=[], verification:list[str]=[], status:TaskStatus=PENDING
- TaskStatus: PENDING,READY,RUNNING,COMPLETED,FAILED,TIMED_OUT,BLOCKED
- VerificationResult: task_id:str, status:str (PASS/FAIL), command:str, exit_code:int, stdout:str, stderr:str, duration_ms:int, failure_type:FailureType|None
- FailureType: CODE_ERROR,TEST_FAILURE,TYPE_ERROR,DEPENDENCY_ERROR,CONFIG_ERROR,ENVIRONMENT_ERROR,TIMEOUT,UNKNOWN
- RequirementResult: requirement_id:str, status:str, evidence:list[str]=[], missing:list[str]=[]
- RunState: run_id, trace_id, user_request:str, workspace:str, spec:AppSpec|None, plan:list[Task]=[], task_results:dict[str,Any]= {}, verification_results:list[VerificationResult]=[], review:dict|None, checkpoints:list[str]=[], status:RunStatus
- RunStatus: CREATED,SPEC_DONE,PLAN_DONE,BUILDING,VERIFYING,REPAIRING,REVIEW_DONE,PASS,FAIL

SANDBOX LocalSandbox(root:Path):
  create_workspace(run_id)->Path; write_file(rel:str,content:str)->Path (reject ../ escape); read_file(rel)->str; list_files(rel=".")->list[str]; delete_file(rel); execute(cmd:list[str]|str, cwd:Path|None, timeout_s:int=120)->dict{exit_code,stdout,stderr,duration_ms} via subprocess.run(shell=False if list, True only if str + log warning).

STORE RunStore(base=Path("runs")):
  create_run(user_request)->RunState; save(state); load(run_id)->RunState; checkpoint(state, name:str, payload:dict); list_runs()->list[str]; resume(run_id)->RunState.

LOGGING emit(base, run_id, trace_id, stage, agent, task_id, status, duration_ms=0, model="", tokens=0, tool="", error="") appends JSON line to runs/{run_id}/events.log.

LLMProvider ABC: generate(prompt:str, system:str="")->str; generate_structured(prompt:str, schema:type[BaseModel])->BaseModel; stream(prompt:str)->Iterator[str] (Mock yields words).
MockProvider: generate returns deterministic template echo; generate_structured returns schema.model_validate({minimal valid}) for AppSpec/TaskList used in tests.
Env provider: if no env key, delegate to MockProvider (so offline tests pass).

ACCEPTANCE:
- `pip install -e .` succeeds, `pytest -q` collects (even if 0 tests, add tests/test_models.py validating AppSpec + Task roundtrip + sandbox jail rejects ../ + store save/load).
- No network needed. No questions.
DO NOT: build agents, DAG, verifier yet.
```

## P2 — M2 SPEC AGENT + VALIDATOR

```
Milestone M2: User request -> validated spec.json. No code generation.

FILES:
  src/harness/agents/spec.py      # SpecAgent(llm:LLMProvider).generate(user_request:str)->AppSpec (prompt template + parse + fallback deterministic parser if LLM fails)
  src/harness/validation/spec_validator.py  # SpecValidator.validate(spec)->list[str] errors (empty=PASS)
  tests/test_spec.py

SPEC AGENT LOGIC:
 System: "You output ONLY valid JSON matching AppSpec schema. No prose. Infer stack/pages/data_model/requirements/must_have/non_goals/acceptance."
 User template includes: request + stack defaults from P0 + require REQ-001..N, acceptance per requirement.
 Post-process: assign REQ-001.. sequential, ensure must_have non-empty, acceptance_criteria non-empty, explicit_non_goals default 3 items.
 If LLM JSON invalid -> fallback rule-based parser (keyword scan for auth/projects/tasks/dashboard -> entities) so offline PASS.

VALIDATOR CHECKS (each returns error string):
 Structural: app_type non-empty, stack.* non-empty, requirements>=1, acceptance_criteria>=1, IDs unique matching REQ-\\d{3}.
 Logical: every page.entity (if field) in data_model names; no requirement text substring in explicit_non_goals; if any requirement mentions API/backend then stack.backend non-empty; duplicate requirement text (case-insensitive) error; every must_have maps to >=1 requirement (substring or explicit link).
 Pipeline helper: spec_stage(store, run_id, llm, max_attempts=2): generate->validate; if FAIL retry with error feedback; if still FAIL raise; else save checkpoint 001-spec.json + state.spec.

ACCEPTANCE:
- tests/test_spec.py: valid request -> PASS; conflicting non-goal (req "login" + non-goal "login") -> FAIL detected; missing acceptance -> FAIL; retry loop succeeds on 2nd attempt (mock failing once).
- Example artifact examples/todo_spec.json (Todo app, 4 REQs).
DO NOT: plan or build.
```

## P3 — M3 PLANNER + DAG ENGINE (sequential)

```
Milestone M3: AppSpec -> tasks.json DAG + sequential executor. No parallel.

FILES:
  src/harness/agents/planner.py       # PlannerAgent(llm).plan(spec)->list[Task]
  src/harness/orchestration/dag.py    # DagEngine + PlanValidator
  tests/test_planner.py  tests/test_dag.py

PLANNER RULES (enforce in code, not just prompt):
 1. DB/schema task(s) first (files containing model/schema/db/migration).
 2. Shared components before pages.
 3. Auth infra before authenticated routes (files with auth).
 4. Every REQ -> >=1 task.requirements; every task -> >=1 verification string + >=1 requirements + >=1 files_touched.
 5. IDs TASK-001.. sequential, depends_on only earlier IDs (acyclic). If LLM violates, auto-fix: sort + repair deps deterministically.
 6. LLM prompt: include spec JSON + ordering rules + output JSON list only. Fallback template: [schema/setup, auth, core entities CRUD, pages/API, tests/verify] if LLM fails.
 7. files_touched must be relative POSIX paths inside workspace (no absolute, no ..).

DAG ENGINE (sequential V1):
 class DagEngine(tasks:list[Task]): statuses dict; get_ready()->list[Task] (PENDING + all deps COMPLETED); mark(task_id,status); is_done(); blocked_propagation(): if dep FAILED/TIMED_OUT -> dependents BLOCKED; topological_order() raises on cycle.
 statuses: PENDING,READY (computed, not stored — store PENDING until dispatched),RUNNING,COMPLETED,FAILED,TIMED_OUT,BLOCKED. FAILED != TIMED_OUT preserved.
 Executor (in orchestration/runner.py skeleton, full impl M4/M5 but DAG part now): loop find READY -> RUNNING -> (placeholder hook) -> COMPLETED; if none READY and not done -> deadlock error listing BLOCKED.

PlanValidator: duplicate IDs, unknown dep, cycle, orphan REQ (no task), task without verification, overlapping files warning (not error in V1, but log for future parallel).

ACCEPTANCE:
- Todo spec (4 REQs) -> 5-8 tasks, all rules hold (assert in test).
- Cycle fixture -> validator error + engine raises.
- TASK-001 FAIL -> dependents BLOCKED (test).
- Checkpoint 002-plan.json saved via store.
DO NOT: run builders, no concurrency, no file-conflict scheduler yet.
```

## P4 — M4 BUILDER + TOOLS (sandbox-gated)

```
Milestone M4: Task -> real files. Minimal context only.

FILES:
  src/harness/agents/builder.py   # BuilderAgent(llm, sandbox, store)
  src/harness/tools/files.py      # read_file, write_file, list_files wrappers enforcing allowlist
  tests/test_builder.py

BUILDER INPUT (only this, never full dump):
 task:Task, requirements:list[Requirement] (filtered to task.requirements), spec_summary:dict (app_type,stack,data_model names), dependency_results:list[VerificationResult], allowed_files:list[str] (=task.files_touched), verification:list[str].

BUILDER PROMPT TEMPLATE:
 "Implement TASK-{id}: {description}. Requirements: {req texts+acceptance}. Allowed files (ONLY these): {list}. Prior results: {dep summary}. Output file contents as JSON map {{relpath: content}}. Use FastAPI+SQLite if backend. Include imports, no stubs. If test file required, include pytest tests."

TOOL ENFORCEMENT:
 Builder may call only sandbox.write_file/read_file/list_files within workspace + within allowed_files (write) — any other path -> PermissionError logged, task FAILED (TYPE_ERROR? use CONFIG_ERROR).
 Never subprocess directly — only via sandbox.execute in M5. Builder writes files then returns {written:[...]}.

SCAFFOLD DEFAULTS (offline-safe):
 If LLM returns invalid map -> fallback writes minimal FastAPI app: workspace/src/main.py (health GET /health), workspace/src/models.py, workspace/requirements.txt (fastapi,uvicorn,pydantic,pytest), workspace/tests/test_health.py asserting /health via TestClient or file exists check if fastapi missing. This guarantees vertical slice passes offline.

ACCEPTANCE:
- Given Todo TASK-001 (schema) in temp workspace -> files created under allowlist, outside-write rejected.
- Mock LLM offline still produces runnable scaffold + pytest passes.
- Store checkpoint 003-task-{id}.json after each task.
DO NOT: verify (M5) or repair yet — just write files.
```

## P5 — M5 VERIFICATION (real execution) + FAILURE CLASSIFICATION

```
Milestone M5: Actually run commands, capture structured results, classify.

FILES:
  src/harness/verification/verifier.py    # Verifier(sandbox).run(task, workspace, commands)->list[VerificationResult]
  src/harness/verification/classifier.py  # FailureClassifier.classify(result)->FailureType
  tests/test_verifier.py  tests/test_classifier.py

VERIFIER:
 def verify_task(task:Task, workspace:Path)->list[VerificationResult]:
   for cmd_str in task.verification (default if empty: ["pytest -q"]):
     parse cmd_str via shlex.split (POSIX) -> sandbox.execute(cmd, cwd=workspace, timeout 120s)
     capture exit_code,stdout[-4000:],stderr[-4000:],duration_ms; status PASS if 0 else FAIL; failure_type=None if PASS else classify().
     persist 004-verification-{task_id}.json via store.
   Also suite-level: verify_workspace(workspace, extra=["pip install -r requirements.txt" if exists]) helper.
 Must NOT do static inspection only — must execute. Timeout -> TIMED_OUT + failure_type TIMEOUT.

CLASSIFIER (regex + exit_code, deterministic):
 - TIMEOUT if duration>=timeout or "timed out"/"TimeoutExpired".
 - ENVIRONMENT_ERROR if "EAI_AGAIN|ENOTFOUND|503|registry.*unavailable|Network is unreachable|pip.*Could not fetch".
 - DEPENDENCY_ERROR if "ModuleNotFound|ImportError|No module named|npm ERR.*404|Could not resolve dependency".
 - TYPE_ERROR if "mypy|TypeError:.*expected|pydantic.*ValidationError|TS2322|Property.*does not exist".
 - TEST_FAILURE if "FAILED|AssertionError|1 failed|FAIL tests/" and exit!=0 and not above.
 - CONFIG_ERROR if "FileNotFound.*config|missing.*pyproject|requirements.*not found|PORT in use" etc.
 - CODE_ERROR if "SyntaxError|IndentationError|NameError|ReferenceError".
 - else UNKNOWN.
 Unit-test each with fixtures from spec (e.g., "npm registry unavailable" -> ENVIRONMENT_ERROR).

ACCEPTANCE:
- Create broken workspace (syntax error) -> verifier returns FAIL + CODE_ERROR, exit!=0, stderr captured.
- Good scaffold from M4 -> PASS.
- Timeout fixture (sleep 3 with timeout 1) -> TIMED_OUT.
DO NOT: auto-repair yet.
```

## P6 — M6 REPAIR LOOP + LOOP DETECTION

```
Milestone M6: FAIL -> classify -> repair -> reverify, max 3, loop guard.

FILES:
  src/harness/orchestration/repair.py  # RepairLoop + LoopDetector
  src/harness/agents/repair_agent.py   # RepairAgent(llm, sandbox)
  tests/test_repair.py

LOOP DETECTOR:
 def sig(cmd, exit_code, stderr): return sha256(f"{cmd}|{exit_code}|{normalize(stderr[-2000:])}".encode()).hexdigest()
 normalize: lowercase, strip numbers/paths/timestamps (regex), collapse whitespace.
 LoopDetector(seen:dict[sig,count]): add(sig)-> (is_loop:bool, count:int); is_loop True if count>=3 same sig.

REPAIR AGENT:
 Input: task, spec_slice, failing VerificationResult + classifier label + last file contents (read via sandbox, truncated 8000 chars).
 Prompt: "Fix {FailureType} in {files}. Error: {stderr}. Do NOT rewrite unrelated files. Output JSON map {{relpath: full corrected content}}."
 Strategy by type: ENVIRONMENT_ERROR -> DO NOT rewrite code, retry once after 2s, if persists mark FAILED (env, not code); DEPENDENCY_ERROR -> fix requirements.txt/pyproject; TYPE_ERROR/CODE_ERROR/TEST_FAILURE -> patch code; CONFIG_ERROR -> fix config; TIMEOUT -> reduce scope/increase timeout once, else FAIL.

REPAIR LOOP:
 def run_with_repair(task, workspace, verifier, repair_agent, max_retries=3):
   attempt=0; while True: results=verifier.verify_task(...); if all PASS return PASS; classify; sig check -> if loop: log WARNING, one final repair try, then ESCALATE FAILED; if attempt>=max_retries: mark FAILED; else repair (write patched files via sandbox), checkpoint repair_started, attempt+=1, reverify.
 Update DagEngine statuses + store.task_results.

ACCEPTANCE:
- Inject TypeScript/Python syntax error -> loop detects, repairs, PASS within <=3 (test with Mock LLM returning fixed content).
- Identical failure 3x (mock repair returns same broken file) -> loop stops, ESCALATE, task FAILED, dependents BLOCKED.
- ENVIRONMENT_ERROR does NOT trigger code rewrite (assert files unchanged, 1 retry only).
DO NOT: checkpoints beyond repair_started/task_completed yet (M9).
```

## P7 — M7 TRACEABILITY + M8 REVIEW AGENT

```
Milestone M7+M8: Requirement -> Task -> File -> Test -> Evidence + final audit gate.

FILES:
  src/harness/trace/matrix.py      # build_matrix(spec, tasks, verification_results, workspace)->dict[REQ, {tasks, files, tests, status}]
  src/harness/agents/reviewer.py   # ReviewAgent(llm|rule-based).review(spec, matrix, workspace)->dict{requirements:[{id,status,evidence,missing}], overall_status}
  tests/test_trace.py  tests/test_review.py

MATRIX:
 For each REQ: tasks = [t for t in plan if REQ in t.requirements]; files = union files_touched; tests/commands = union verification; evidence = [f for f in files if workspace/f exists] + [v.command for v in results if v.status PASS and v.task_id in tasks]; status PASS only if >=1 file exists AND >=1 PASS result covering it, else FAIL with missing=[reasons].
 No evidence -> FAIL (never PASS on prose).

REVIEWER (rule-based default, LLM optional):
 Rule pass: check file exists + PASS verification + (if acceptance mentions keyword, grep file for keyword, else warn). LLM may add rationale but cannot override FAIL->PASS without evidence.
 Output JSON exactly: {"requirements": [{"id","status":"PASS|FAIL","evidence":[paths+commands],"missing":[]}], "overall_status":"PASS|FAIL"} saved as review.json.
 Overall PASS only if all REQs PASS.

ACCEPTANCE:
- Todo run with all PASS -> matrix shows 4/4, review overall PASS with evidence paths.
- Delete one implementation file -> that REQ FAIL with missing=["file src/... not found"], overall FAIL.
- review.json validates against RequirementResult list schema.
DO NOT: runtime/browser yet.
```

## P8 — M9 CHECKPOINTING + RECOVERY

```
Milestone M9: Crash-safe resume.

FILES:
  src/harness/state/checkpoints.py  # CheckpointManager (thin over RunStore)
  tests/test_recovery.py

EVENTS (must emit via store.checkpoint):
 spec_created, plan_created, task_started, task_completed, verification_completed, repair_started, review_completed.
 Layout: runs/{run_id}/state.json (latest RunState), checkpoints/{seq:03d}-{event}-{task?}.json, workspace/ (generated app), events.log.

RESUME LOGIC in orchestration/pipeline.py::resume(run_id):
 load state.json; find last completed checkpoint; recompute DAG statuses from task_results+verification_results; requeue PENDING/READY/RUNNING->PENDING (RERUN), keep COMPLETED/FAILED/BLOCKED; continue pipeline without redoing COMPLETED tasks (assert file hashes unchanged).

ACCEPTANCE:
- Start Todo run, kill after TASK-002 (simulate by saving partial state), resume() completes remaining without redoing TASK-001 (assert events.log shows TASK-001 once).
- Corrupt state.json -> resume raises clear error (not silent).
- tests cover checkpoint file naming + sequence.
DO NOT: parallel yet.
```

## P9 — M10 RUNTIME VERIFICATION (no browser in V1)

```
Milestone M10: Prove built app actually starts and serves.

FILES:
  src/harness/verification/runtime.py  # RuntimeVerifier
  tests/test_runtime.py

RUNTIME VERIFIER STEPS (FastAPI default, Node fallback):
 1. Detect entry: src/main.py:app or app.py:app or package.json main. If none, FAIL (CONFIG_ERROR).
 2. Start: `python -m uvicorn src.main:app --port {free_port}` or `npm run dev -- --port {port}` via subprocess.Popen (through sandbox root), wait up to 15s.
 3. Checks: process alive, TCP port open (socket.connect), GET /health or / returns 2xx, GET /docs or /api/health if exists 2xx, SQLite file exists/connects if expected.
 4. Capture logs, kill process, return {status PASS/FAIL, checks:[{name, ok, detail}], evidence:[log snippet, http status]}.
 5. On FAIL classify (CONFIG/DEPENDENCY/ENVIRONMENT) for repair loop reuse.

BROWSER (V1: STUB ONLY): create src/harness/verification/browser.py with `def verify_acceptance(...): raise NotImplementedError("Browser verification deferred post-V1")` + test asserting skip. Do NOT implement Playwright/Selenium now.

ACCEPTANCE:
- M4 scaffold app -> runtime PASS (health 200).
- Broken port (app exits) -> FAIL with diagnostics, repair hint.
DO NOT: Docker, parallel.
```

## P10 — M11 OBSERVABILITY + CLI + BENCHMARKS

```
Milestone M11: Operable harness.

OBSERVABILITY (src/harness/utils/logging.py finalize):
 Every stage emits JSONL with all fields: run_id,trace_id,stage,agent,task_id,timestamp,duration_ms,model,tokens,tool,status,error. Provide `python -m harness.cli logs <run_id>` to pretty-print + `stats` (counts, retries, token sum, duration). Test asserts required keys on every line.

CLI (src/harness/cli.py, argparse only):
 `builder new "request" [--run-id X --workspace Y --max-retries 3]` prints:
  [1/5] Generating specification... ✓
  [2/5] Planning N tasks... ✓
  [3/5] Building... ✓ TASK-001 ... (⚠ fail + ↻ repairing)
  [4/5] Verifying... ✓ Build ✓ Tests ✓ Runtime
  [5/5] Reviewing requirements... ✓ 14/14 satisfied
  BUILD COMPLETE / BUILD FAILED with paths to spec/tasks/verification/review.json
 Also `builder resume <run_id>`, `builder review <run_id>`, `builder logs <run_id>`.
 Map to orchestration/pipeline.py::run_new() orchestrating M2-M10 sequentially.

BENCHMARKS (benchmarks/*.json + src/harness/bench/runner.py):
 5 fixed cases: todo, crud-dashboard, auth-app, api-db, ecommerce-prototype (each: request string + min REQs + expected tasks range). Runner executes pipeline with MockProvider, records {build_success, test_success, req_completion, repair_count, duration_s, tokens}. `pytest benchmarks/` or `builder bench --quick` (runs todo only). Do NOT judge by looks — assert metrics JSON written.

ACCEPTANCE:
- `builder new "Build a Todo app"` offline -> BUILD COMPLETE, artifacts exist, 5-stage output matches regex.
- events.log has all keys, bench quick passes.
DO NOT: web UI, Docker prod.
```

## P11 — M12 FINAL GATE: VERTICAL SLICE + FAILURE INJECTION + V1 CHECKLIST

```
Milestone M12: Prove reliability, then freeze V1.

TASKS (do in order, all must PASS):
1. VERTICAL SLICE: `builder new "Build a Simple Todo App with add/list/complete"` -> expect SPEC(>=3 REQs)->PLAN(>=3 tasks)->BUILD(files)->VERIFY(pytest PASS)->RUNTIME PASS->REVIEW PASS. Save under runs/demo_todo/. If any step FAILs, fix harness, do not proceed.
2. FAILURE INJECTION: introduce SyntaxError into workspace/src/main.py, rerun verify -> must DETECT (FAIL+CODE_ERROR), LOCALIZE (task_id), CAPTURE diagnostics, SEND to repair, REPAIR, REVERIFY PASS. Then inject identical failure 3x with no-op repair mock -> must WARNING->ESCALATE->FAILED+BLOCKED (assert).
3. V1 CHECKLIST (all ✓): valid spec, validated spec, valid DAG, sequential execution, real files, real verification, localized failures, repaired failures, loop detection, checkpoints+resume, traceability matrix, final review, working project in runs/.
4. DOCS: README.md (quickstart builder new/resume/logs, architecture diagram ASCII from plan §34, evidence principle), examples/todo_run/ (spec/tasks/verification/review JSON copies).
5. `pytest -q` entire repo green, `builder bench --quick` green.

FORBIDDEN IN V1 (assert not present): docker/, web_ui/, parallel workers, browser automation beyond stub, postgres, network research.
If all green -> tag V1 DONE. If not, loop M1-M11 fixes, never ship red.
```

---

## GLOBAL RULES APPENDIX (coding agent must obey)

1. NEVER ask questions. Use P0 defaults.
2. Build sequentially M1->M12. Do not start M(N+1) if M(N) tests red. Run `pytest -q` after each milestone.
3. Keep diffs small, files focused (<400 lines each, split if larger).
4. Every new module needs a test file. Every bug fix needs a regression test.
5. No secrets in repo. No absolute paths. No `shell=True` except verifier with logged warning.
6. Evidence over claims: every status change logs to events.log + checkpoint.
7. If LLM call fails/timeouts -> fallback deterministic path so pipeline never blocks.
8. Final deliverable per run: workspace/ + spec.json + tasks.json + verification.json + review.json + events.log + state.json.
9. End-of-run summary must list per REQ: Implemented? Tested? Runtime? Evidence? PASS/FAIL — never "AI says finished".

## prompts.chat MCP NOTE
- Searched via `prompts-chat_search_prompts/skills` (public, OK, 0 hits for niche harness queries — expected).
- `improve_prompt` / `save_prompt` require API key (`Authentication required`). To publish: set `PROMPTS_CHAT_API_KEY` in env, then call `prompts-chat_save_prompt(title="App-Builder Harness Autonomous Prompts", content=<this file>)`. Local file is authoritative until then.
- Suggested tags if publishing: `coding-agent, autonomous, python, harness, spec-driven, verification`.