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Animica Post-Quantum Signature Verification (ML-DSA-65)
x402
Animica Post-Quantum Signature Verification (ML-DSA-65) is a paid API for AI agents from animica.dev, paid per call via x402, $0.001794/call, status unknown (last checked 2026-09-14).
Verifies a post-quantum ML-DSA-65 (Dilithium) digital signature against a public key and message, returning a cryptographic verdict with fingerprint and metadata.
Price / call$0.001794
Success—
StatusUnknown
How this service works
Verify a post-quantum signature (ML-DSA-65 / Dilithium3 / SPHINCS+ as enabled by chain policy) against a message and public key, using the same verifier the Animica chain itself uses to admit transactions. Useful when an agent must check a PQ-signed attestation without shipping a post-quantum library of its own. A signature that does not verify is a SUCCESSFUL call answering ok:false - you paid for the answer, and "invalid" is an answer. Only an inability to perform the check is treated as a failure.
Output
Returns a JSON object with: 'ok' (boolean verdict of whether the signature is valid), 'reason' (explanation if invalid), 'scheme_id' and 'scheme_name' (confirming ML-DSA-65), 'pub_fingerprint' (a fingerprint of the public key), 'sizes' (byte sizes of inputs), and 'verified_at' (timestamp of verification).
Example use cases
Validate agent payment authorization
“I have a payment authorization signed with ML-DSA-65 (alg_id 4099) — can you check whether this signature 'deadbeef...' on message '1234abcd...' is valid for public key 'f00d9876...'? I need the fingerprint and the reason if it fails.”
Audit post-quantum signed document
“We received a document hash signed with a Dilithium key (ML-DSA-65, alg_id 4099). Please verify the signature 'cafe1234...' against message '0x8a9b...' and public key 'ab12ef...' and tell me if it's authentic and when the verification was done.”
Authenticate a user's quantum-safe credential
“A user is trying to log in using a post-quantum credential — their public key is 'b00bface...', the challenge message is '99aabb...' and they sent back signature '11223344...'. Use algorithm 4099 (ML-DSA-65) to check if the signature is genuine and return the key fingerprint.”
Technical details
Endpoint
POSThttps://animica.dev/x402/pq/verifyWhen to prefer
Choose this endpoint when you need to verify post-quantum (ML-DSA-65 / Dilithium) digital signatures specifically — especially in contexts involving Animica platform payments or agents spending ANM tokens, where ML-DSA-65 is the only accepted spending scheme. Prefer over generic ECDSA or RSA verifiers when quantum-resistance is required.
Side effects
- Invalid or malformed hex encoding for message, signature, or public key — returns ok:false with reason
- Unsupported alg_id (anything other than 4099) — scheme not recognized
- Signature does not match message and public key — returns ok:false
- Missing required fields (alg_id, message, signature, public_key) — request rejected
- Payment not received or insufficient USDC balance — x402 payment required error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| alg_id | integer | scheme id - 4099 (0x1003) is ML-DSA-65, the only scheme that can spend on Animica |
| message | string | hex-encoded message bytes |
| sign_hash | string | hex domain/sign-hash bytes, when the scheme binds one |
| signature | string | hex-encoded signature |
| public_key | string | hex-encoded public key |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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