# Synthex Forge Bureau Reputation Scorer

> Synthex Forge Bureau Reputation Scorer is a paid API for AI agents from x402.synthexforge.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-22).

Computes a reputation score for an endpoint URL or issuer DID based on observed behavioral events, returning a signed attestation artifact.

## Facts

- Endpoint: POST https://x402.synthexforge.com/v1/bureau/reputation?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthex-forge-bureau-reputation-scorer-d666a071
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_V97ClFWwLMlpBD3ap8Jja

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 synthex-forge-bureau-reputation-scorer-d666a071 -d '<json body>'
```

Example prompt: Score the reputation of the endpoint https://api.example.com/v1/pay based on these three observed events: one successful payment, one timeout, and one invalid response — I need a signed attestation artifact back.

## When to prefer this

Choose this endpoint when you need a cryptographically attested, governance-grade reputation score for a specific API endpoint URL or DID issuer, especially within Web3 or agent-to-agent trust frameworks where signed artifacts and on-chain payment settlement (USDC on Base) are required. Prefer this over informal heuristics or manual review when audit trails and tamper-evident attestations matter.

## Known failure modes

- Missing or invalid 'subject' field returns a 400-level error
- Empty or malformed 'events' array may result in an indeterminate or low-confidence score
- Payment not fulfilled results in HTTP 402 with x402 v2 payment-required envelope requiring USDC on Base mainnet (chain ID 8453)
- Invalid event object schema within the array may cause rejection or partial scoring
- Subject URL or DID not resolvable may reduce scoring fidelity

## How this service works

Synthex Forge x402 Receive: 41 paid verification, attestation and governance endpoints (Ed25519 + SHA-256 signed artifacts) plus free verify/public-key/standard sibling routes. Paid routes answer HTTP 402 with an x402 v2 `payment-required` envelope (atomic USDC on Base mainnet, chain ID 8453). Free routes are declared with `security: []` per the x402scan discovery spec.

## Output

Returns a JSON object with an 'ok' boolean indicating success, along with a cryptographically signed reputation score artifact (Ed25519 + SHA-256) for the submitted subject endpoint or DID, computed from the provided events array.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "events": {
   "type": "array",
   "items": {
    "type": "object"
   },
   "description": "Observed events feeding the reputation score"
  },
  "subject": {
   "type": "string",
   "description": "Endpoint URL or issuer DID to score"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthex-forge-bureau-reputation-scorer-d666a071/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.synthexforge.com](https://www.zero.xyz/host/x402.synthexforge.com/llms.txt)