# Agent Reputation ZK Shield MCP

> Agent Reputation ZK Shield MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-18).

Generates or validates zero-knowledge proofs for agent reputation shielding, protecting agent identity and reputation data in multi-agent systems

## Facts

- Endpoint: POST https://api.m2mcent.com/agent-reputation-zk-shield-mcp/api/process?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-reputation-zk-shield-mcp-91e9d2b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SgItnAsfks8H9pQ5jvhri

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 agent-reputation-zk-shield-mcp-91e9d2b9 -d '<json body>'
```

Example prompt: Can you run a zero-knowledge reputation shield on this agent data so I can prove its trustworthiness without exposing the raw reputation scores?

## When to prefer this

Choose this endpoint when you need privacy-preserving reputation verification for AI agents — specifically when you must prove an agent meets reputation criteria without revealing underlying data. Prefer this over plain reputation lookup endpoints when data confidentiality or anti-spoofing requirements demand cryptographic proof rather than raw scores.

## Known failure modes

- Invalid or malformed data payload returns a 400-level error
- ZK proof generation failure due to unsupported input format
- Timeout during cryptographic computation for complex proofs
- Insufficient funds (payment not processed) returns a 402 error
- Empty or missing data field causes processing rejection

## 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 zero-knowledge proof or attestation result indicating whether the agent's reputation data passes the shield check, without exposing the underlying raw reputation values. Likely includes a proof object, validation status, and possibly a confidence or attestation token.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-reputation-zk-shield-mcp-91e9d2b9/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)