# Sybil Resistance ZK Gate MCP

> Sybil Resistance ZK Gate MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-10).

Verifies that a request comes from a unique, non-duplicate identity using zero-knowledge proofs for sybil resistance gating.

## Facts

- Endpoint: POST https://api.m2mcent.com/sybil-resistance-zk-gate-mcp/api/process?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sybil-resistance-zk-gate-mcp-1559dceb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3BRQi6wjjcBvdGI4GMATI

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 sybil-resistance-zk-gate-mcp-1559dceb -d '<json body>'
```

Example prompt: Can you run a sybil resistance ZK gate check on this identity data to confirm it represents a unique, non-duplicate participant before I allow them into the airdrop?

## When to prefer this

Choose this endpoint when you need privacy-preserving sybil resistance — i.e., confirming a participant is unique without revealing their underlying identity. Prefer it over standard KYC or CAPTCHA services when zero-knowledge proofs are required for regulatory or privacy reasons, or when you need programmatic, agent-callable uniqueness gating for airdrops, DAOs, or access-controlled systems.

## Known failure modes

- Invalid or malformed 'data' input causes a 400 error
- ZK proof verification failure returns a gate-denied result
- Insufficient USDC payment (x402 protocol) blocks the request
- Missing required 'data' field returns validation error
- Timeout if proof computation exceeds service limits

## 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 submitted identity data passes or fails the zero-knowledge sybil resistance gate, confirming uniqueness without exposing underlying personal data. May include an attestation or pass/fail status for downstream access control decisions.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sybil-resistance-zk-gate-mcp-1559dceb/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)