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ForgeMesh Notary Batch AI Attestation
x402
ForgeMesh Notary Batch AI Attestation is a paid API for AI agents from notary.forgemesh.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Notarizes up to 20 AI inference records in a single call, producing a signed Ed25519 attestation, SHA-256 content hash, receipt token, and anchor status for each record.
Price / call$0.005
Success—
StatusUnknown
How this service works
Notarize AI output in bulk: one signed Ed25519 attestation of the model response per record for up to 20 AI inferences in a single call — same content hash, receipt token, and anchor status as single notarization, giving you a cryptographic receipt for inference across an entire audit-trail pipeline.
Output
Returns one attestation object per input record, each containing a signed Ed25519 signature over the content hash, a SHA-256 hash of the prompt+response+model_id+timestamp, a receipt token for future verification, and an anchor status indicating whether the record has been committed to an external ledger or timestamping service.
Example use cases
Compliance audit trail for AI pipeline
“We ran 15 GPT-4o inferences to generate customer summaries and need a cryptographic receipt for each — batch notarize all of them now using their prompts, responses, and model IDs so we have a signed audit trail for our compliance review.”
Tamper-proof log of medical AI decisions
“Notarize these 10 AI diagnostic suggestion records in one call — each has the original prompt, the model response from claude-3-opus, and the ISO timestamp of when the inference ran — so we have immutable signed proof of what the model said for each patient case.”
Legal evidence of AI-generated contract drafts
“I need to batch-attest 8 contract drafts generated by our LLM today — submit them with their prompts, the model ID openai/gpt-4-turbo, and timestamps so each gets a content hash and receipt token we can produce as evidence that the AI output wasn't altered.”
Technical details
Endpoint
POSThttps://notary.forgemesh.io/api/notarize/batchWhen to prefer
Choose this endpoint when you need to notarize multiple AI inference records in a single atomic call rather than making individual requests — it's up to 20x more efficient for pipeline audit logging, compliance workflows, or any scenario where you produce batches of model outputs that all require cryptographic attestation. Prefer it over the single-record endpoint whenever you have 2 or more inferences to sign in the same processing window.
Side effects
- Array exceeds 20 items — returns 400 with maxItems violation
- Missing required fields (prompt, response, model_id) on any record — returns 400 with field-level validation error
- Payload too large (metadata field exceeds 4 KB) — returns 413 or 400
- Payment not included or insufficient — returns 402 requiring x402 payment of $0.005 USDC
- Malformed ISO-8601 client_timestamp — may be rejected or ignored depending on strictness
- Service unavailable causing partial batch failure — unclear retry semantics per record
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| records | array |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 2,
"attestations": [
{
"anchor": {
"status": "pending"
},
"model_id": "openai/gpt-5",
"algorithm": "ed25519",
"signature": "base64-ed25519-signature",
"receipt_url": "https://notary.forgemesh.io/api/receipt/att_0123456789abcdef01234567",
"content_hash": "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
"notarized_at": "2026-07-03T12:00:01.000Z",
"receipt_token": "private-receipt-token",
"signer_pubkey": "base64-ed25519-public-key",
"attestation_id": "att_0123456789abcdef01234567",
"payload_stored": false,
"client_timestamp": "2026-07-03T12:00:00Z"
}
]
}
}Tags
x402
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