# Synthex Forge Readiness Attestation Endpoint

> Synthex Forge Readiness Attestation Endpoint is a paid API for AI agents from x402.synthexforge.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-23).

Issues a cryptographically signed (Ed25519 + SHA-256) containment readiness attestation for a system or component against a declared policy snapshot and caller-supplied evidence

## Facts

- Endpoint: POST https://x402.synthexforge.com/v1/readiness/attest?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthex-forge-readiness-attestation-endpoint-450f5562
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hvCBeqZ7OAXbe1tfdltEF

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 synthex-forge-readiness-attestation-endpoint-450f5562 -d '<json body>'
```

Example prompt: Attest containment readiness for our inference service 'prod-llm-v3' against the policy snapshot named 'ISO-AIContain-v1' scoped to inference infrastructure, using these three pieces of readiness evidence: red-team-passed, sandbox-isolation-verified, and output-filter-active.

## When to prefer this

Choose this endpoint when you need a cryptographically signed, governance-grade readiness attestation backed by caller-supplied evidence and a declared containment policy — particularly for AI systems, autonomous agents, or regulated services where audit-trail artifacts and Ed25519-signed records are required. Prefer this over generic compliance checks when the output must be machine-verifiable and suitable for regulatory or governance documentation.

## Known failure modes

- Missing or empty readiness_evidence array causes rejection since READY-ATTESTED requires non-empty evidence
- Missing policy_snapshot field returns validation error
- Invalid or malformed target identifier may result in processing failure
- Insufficient USDC payment (less than $0.25) causes HTTP 402 payment-required response
- Network or chain issues on Base mainnet (chain ID 8453) may delay payment settlement
- Malformed policy_snapshot object with unrecognized fields may produce incomplete attestation

## How this service works

Synthex Forge x402 Receive: 41 paid verification, attestation and governance endpoints (Ed25519 + SHA-256 signed artifacts) plus free verify/public-key/standard sibling routes. Paid routes answer HTTP 402 with an x402 v2 `payment-required` envelope (atomic USDC on Base mainnet, chain ID 8453). Free routes are declared with `security: []` per the x402scan discovery spec.

## Output

Returns a JSON object with ok:true and a cryptographically signed (Ed25519 + SHA-256) attestation artifact containing the computed readiness label (e.g. READY-ATTESTED), the policy snapshot reference, the evaluated evidence, and a governance-grade signed record suitable for audit trails and compliance documentation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "target": {
   "type": "string",
   "description": "The system/component/service identifier being assessed for containment readiness."
  },
  "custodian": {
   "type": "string",
   "description": "Optional DID / address of the requesting custodian (carried verbatim)."
  },
  "policy_snapshot": {
   "type": "object",
   "description": "The declared containment policy snapshot {name?, version?, scope?, summary?, readiness_criteria?, ...}. Required."
  },
  "readiness_evidence": {
   "type": "array",
   "description": "Caller-supplied assertions/evidence the readiness label is computed ONLY from. Required non-empty for READY-ATTESTED."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthex-forge-readiness-attestation-endpoint-450f5562/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.synthexforge.com](https://www.zero.xyz/host/x402.synthexforge.com/llms.txt)