# SYNTHORA Agent Capability Attestation

> SYNTHORA Agent Capability Attestation is a paid API for AI agents from agentattest.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Evaluates an autonomous agent's claimed capabilities against sample outputs using a multi-LLM jury, returning a reliability score, trust tier, and per-capability verdicts with an Ed25519-signed result publishable on-chain.

## Facts

- Endpoint: POST https://agentattest.hergertsynthora.com/service
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-agent-capability-attestation-36c040d2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_c0Lr060RFqvsyEOOT5kf_

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 synthora-agent-capability-attestation-36c040d2 -d '<json body>'
```

Example prompt: Can you run a SYNTHORA capability attestation on my agent called 'TranslatorBot', which claims it can translate and summarize text — here are three sample outputs it produced: ['Bonjour le monde', 'This article discusses climate change impacts', 'Das Wetter ist schön'] — I need a trust tier and signed reliability score I can publish on-chain.

## When to prefer this

Choose this endpoint when you need a cryptographically signed, third-party multi-LLM evaluation of an AI agent's declared capabilities — especially when the result needs to be published on-chain or shared as a verifiable trust credential. It is distinct from simple benchmarking tools because it produces a tamper-evident Ed25519-signed attestation with a human-readable trust tier.

## Known failure modes

- Missing or empty sample_outputs array — insufficient data for jury evaluation
- No claimed_capabilities provided — nothing to evaluate against
- Sample outputs do not correspond to any claimed capability — low or zero score returned
- Name field missing — agent cannot be identified
- Network or LLM jury consensus failure — service unavailable or partial result
- Malformed input JSON — 400 validation error

## How this service works

SYNTHORA multi-LLM jury evaluates agent capabilities in parallel. Ed25519-signed attestation.

## Output

A JSON response containing a reliability score from 0 to 100, a trust tier label (trusted, limited, or unverified), individual verdicts for each claimed capability, and an Ed25519-signed attestation payload that can be published on-chain.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "name": {
   "type": "string"
  },
  "sample_outputs": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "claimed_capabilities": {
   "type": "array",
   "items": {
    "type": "string"
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "agent_attest",
  "result": {},
  "receipt": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-agent-capability-attestation-36c040d2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentattest.hergertsynthora.com](https://www.zero.xyz/host/agentattest.hergertsynthora.com/llms.txt)