# Sybil Resistance Score MCP

> Sybil Resistance Score MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.28/call, status unknown (last checked 2026-10-12).

Computes a sybil resistance score for a given identity or data input, quantifying the likelihood that an entity is a unique, legitimate human rather than a bot or duplicate account.

## Facts

- Endpoint: POST https://api.m2mcent.com/sybil-resistance-score-mcp/api/process?utm_source=zero.xyz
- Price: $0.28/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sybil-resistance-score-mcp-1d8c302a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OOWZOYwMmJSbplA3kwLlW

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-score-mcp-1d8c302a -d '<json body>'
```

Example prompt: Can you run a sybil resistance check on this wallet address — 0xAbC123...def — and tell me the score so I know if it's likely a bot or a real unique user?

## When to prefer this

Choose this endpoint when you need a quick, paid, on-demand sybil resistance score for a single identity, wallet address, or user data string — particularly in blockchain, airdrop, DAO governance, or DeFi contexts where bot and duplicate account detection is critical. Prefer this over manual heuristics or free tools when you need a consistent, API-driven score with per-call pricing and agent-compatible x402 payment flow.

## Known failure modes

- Empty or malformed 'data' string returns a validation error
- Unrecognized identity format may yield a low-confidence or null score
- Payment failure (x402) results in 402 response before processing
- Downstream scoring model unavailability causes 500 or timeout errors
- Ambiguous or sparse identity data may return a low-confidence score

## 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 sybil resistance score (likely a numeric value or structured object) indicating how resistant the submitted identity or data is to sybil attacks — higher scores typically mean the entity is more likely to be a unique, legitimate human. May include confidence levels or categorical labels.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sybil-resistance-score-mcp-1d8c302a/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)