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Vibes-Coded Handoff Digest
x402
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.
Price / call$0.02
Success—
StatusUnknown
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).
Example use cases
Multi-agent phase transition verification
“I'm passing control from my research agent to my writing agent at the 'research-done' phase with todos ['write report', 'cite sources']. Generate a handoff digest so the writing agent can verify it received the exact same state I sent.”
Drift detection between agent runs
“My orchestrator ran a handoff twice — before SHA-256 was 'a1b2c3d4' and I want to know if the current payload for next_agent 'agent-c', phase 'planning', todo ['outline doc'] has drifted. Can you run the handoff digest and compare?”
Tamper-evident audit trail for agent pipeline
“Before my agent pipeline moves from 'data-collection' to 'analysis' phase, I need a canonical SHA-256 digest of the handoff to 'analyst-agent' with todos ['clean data', 'run model'] so I can store it for audit verification later.”
Technical details
Endpoint
POSThttps://vibes-coded.com/api/v1/outcomes/handoff-digest?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Output
Schema · Response
{
"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"
}
}Tags
x402
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