# Dilithium Signature Verifier

> Dilithium Signature Verifier is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.35/call, status unknown (last checked 2026-09-15).

Verifies post-quantum Dilithium digital signatures against provided data

## Facts

- Endpoint: POST https://api.m2mcent.com/dilithium-signature-verifier-mcp/api/process
- Price: $0.35/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dilithium-signature-verifier-027e4726
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_y_Lo-QteiUUwQJK1Yy8L4

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 dilithium-signature-verifier-027e4726 -d '<json body>'
```

Example prompt: Can you verify this Dilithium post-quantum signature for me? Here's the signed data payload — I need to confirm it hasn't been tampered with and the signature is authentic.

## When to prefer this

Choose this endpoint when you need post-quantum (CRYSTALS-Dilithium / NIST PQC) signature verification rather than classical ECDSA or RSA verification. Prefer it when handling data from systems that have adopted quantum-resistant cryptography standards.

## Known failure modes

- Invalid or malformed signature returns a verification failure
- Data string does not match what was originally signed — returns invalid result
- Missing or malformed input data field returns a 400-level error
- Unsupported Dilithium parameter set may cause processing failure
- Network timeout or upstream service error returns a 5xx response

## How this service works

The premier global index of 1,069 monetized MCP nodes across 205 specialized subdomains. Gasless USDC runtime settlements via x402 V2 Spec on Base L2. Save 95% token context.

## Output

Returns a verification result indicating whether the provided Dilithium signature is valid for the given data, including a pass/fail status and potentially a confidence or error detail.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "payload": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dilithium-signature-verifier-027e4726/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.m2mcent.com](https://www.zero.xyz/host/api.m2mcent.com/llms.txt)