x402 Notary MCP
Cryptographic receipts for AI outputs — signed Ed25519 attestations, Merkle proofs, and Base chain-anchors via x402 USDC micropayments.
Community: Submitted by a user or imported; check the owner before granting accessOnlineNo sign-inGlobalFreeRead-only
What it can do
- Notarize Inference: Get a cryptographic receipt for one AI inference ($0.001 USDC via x402). This hosted endpoint is challenge-first: it returns the exact payment instructions rather than settling. Fo
- Notarize Batch: Notarize up to 20 inferences in one call ($0.005 USDC via x402). Challenge-first on this hosted endpoint — returns payment instructions.
- Verify Attestation: FREE — verify any attestation: Ed25519 signature check, content-hash recompute, Merkle anchor proof. Supply attestation_id plus either the original content or its content_hash.
What data it sees
Do you need an account
No: the server works without sign-in
Cryptographic receipts for AI outputs — signed Ed25519 attestations, Merkle proofs, and Base chain-anchors via x402 USDC micropayments. Free verification, no wallet needed.
Server tool list (6)
Raw names from tools/list. Only developers need these.
| notarize_inference | Get a cryptographic receipt for one AI inference ($0.001 USDC via x402). This hosted endpoint is challenge-first: it returns the exact payment instructions rather than settling. For automatic one-call payment, run 'npx -y @forgemeshlabs/x402-notary-mcp' locally with a funded Base wallet. |
| notarize_batch | Notarize up to 20 inferences in one call ($0.005 USDC via x402). Challenge-first on this hosted endpoint — returns payment instructions. |
| verify_attestation | FREE — verify any attestation: Ed25519 signature check, content-hash recompute, Merkle anchor proof. Supply attestation_id plus either the original content or its content_hash. |
| get_receipt | FREE — public receipt/proof material for an attestation (hash, signature, timestamps, Merkle anchor). |
| notary_stats | FREE — live aggregate stats: totals, 24h volume, top models, anchored batches. |
| notary_pubkey | FREE — the notary's Ed25519 public key for offline signature verification. |