# Vibes-Coded Handoff Digest

> Vibes-Coded Handoff Digest is a paid API for AI agents from vibes-coded.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-27).

Generates a canonical, SHA-256-hashed JSON digest of an agent handoff payload to verify semantic consistency across multi-agent workflow transitions.

## Facts

- Endpoint: POST https://vibes-coded.com/api/v1/outcomes/handoff-digest?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vibes-coded-handoff-digest-72473fce
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RLIaxT9D6xRmXeyBeA1Kz

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability vibes-coded-handoff-digest-72473fce -d '<json body>'
```

Example prompt: Generate a handoff digest for my agent transition: next agent is 'agent-b', current phase is 'research-done', and the todo list is ['write report'] — I need the SHA-256 hash and drift detection comparing against my previous digest 'a1b2c3d4'.

## When to prefer this

Use this endpoint when you need cryptographically verifiable, tamper-evident handoff records between agents in a multi-agent pipeline. It is especially useful when agent state must be audited, when detecting semantic drift between two runs of the same handoff, or when downstream agents must confirm they received exactly the state an upstream agent intended to send. Prefer this over ad hoc JSON serialization when determinism and hash consistency matter for your workflow.

## Known failure modes

- Invalid or malformed handoff JSON body returns error
- Missing required fields (next_agent, phase, todo) may produce incomplete digest
- Network timeout results in no digest being returned
- Payment failure (HTTP 402) if USDC payment is not completed before retry
- Drift detection unavailable if no prior SHA-256 is provided for comparison

## How this service works

Pay-per-call JSON for AI agents: skill search, listing optimization, install plans, productization, and artifact risk scoring. HTTP 402 → USDC. Full skill marketplace on-site.

## Output

Returns a JSON object containing: a SHA-256 hash of the canonical (sort_keys, compact) JSON handoff payload, the canonical JSON string itself, the resource identifier 'handoff-digest', a timestamp, byte size, and a drift object indicating whether the payload changed compared to a prior digest (with before and after SHA-256 values if drift is detected).

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "note": "Canonical = sort_keys compact JSON. Same SHA-256 ⇒ same handoff semantics. Pair with workspace-read for handoff verification.",
  "bytes": 78,
  "drift": {
   "changed": true,
   "after_sha256": "9f2c81e4…",
   "before_sha256": "a1b2c3d4…"
  },
  "sha256": "9f2c81e4ab5d6c7d8e9f0a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d",
  "resource": "handoff-digest",
  "canonical": "{\"next_agent\":\"agent-b\",\"phase\":\"research-done\",\"todo\":[\"write report\"]}",
  "generated_at": "2026-08-16T20:00:00Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vibes-coded-handoff-digest-72473fce/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from vibes-coded.com](https://www.zero.xyz/host/vibes-coded.com/llms.txt)