# Aegis Attest — x402 Agent Service Trust Check

> Aegis Attest — x402 Agent Service Trust Check is a paid API for AI agents from aegis.borisinc.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

Returns a trust attestation for a given agent-payable service URL, including trust scores backed by verified real purchases in the x402 ecosystem.

## Facts

- Endpoint: POST https://aegis.borisinc.com/attest
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aegis-attest-x402-agent-service-trust-check-62e96a6e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3jeNpnCkbQnmtxRhCNDNR

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 aegis-attest-x402-agent-service-trust-check-62e96a6e -d '<json body>'
```

Example prompt: Before my agent pays for that x402 service at https://api.example.com/weather, can you check its Aegis trust score and attestation to confirm it has real verified purchases behind it?

## When to prefer this

Use this endpoint when an AI agent needs to verify the trustworthiness of an x402-gated service before making a payment or routing a request to it. Prefer Aegis Attest over generic web reputation checks when operating within the x402 agent economy, as its trust scores are specifically backed by verified on-chain purchases rather than heuristics or user reviews.

## Known failure modes

- URL not found in Aegis registry — service has not been indexed or attested yet
- Invalid or malformed URL input returns an error
- Service with zero purchases may return a low or null trust score
- Network timeout or upstream unavailability returns 5xx
- $0.25 USDC payment required per call; failure to pay results in 402 response

## How this service works

Search 2,400+ x402 services ranked by delivery-verified trust. Free discovery, paid trust checks, payment routing with failover. We buy from sellers to prove they deliver.

## Output

A trust attestation object for the queried service URL, including a trust score derived from real verified purchases, service metadata, and signals indicating whether the endpoint is safe to route payments to within the x402 agent economy.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aegis-attest-x402-agent-service-trust-check-62e96a6e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from aegis.borisinc.com](https://www.zero.xyz/host/aegis.borisinc.com/llms.txt)