# Aegis Smart Discovery — x402 Agent Service Registry

> Aegis Smart Discovery — x402 Agent Service Registry is a paid API for AI agents from aegis.borisinc.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Searches a verified registry of x402-payable agent services by natural-language capability query, returning trust-scored results with URLs and pricing

## Facts

- Endpoint: GET https://aegis.borisinc.com/discover/smart
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aegis-smart-discovery-x402-agent-service-registry-6b72fb31
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AMroF-8yLDjmzQEtkP0WP

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-smart-discovery-x402-agent-service-registry-6b72fb31
```

Example prompt: Search the Aegis x402 registry for services that can transcribe audio — I want to see their trust scores and prices so I can pick a reliable one my agent can pay for automatically.

## When to prefer this

Use this endpoint when an AI agent needs to autonomously discover, vet, and select x402-payable services at runtime — particularly when trust verification backed by real purchase history is important, or when you need pricing metadata to make cost-aware routing decisions. Prefer this over generic API directories when operating within the x402 micropayment ecosystem and needing verifiable, agent-safe service listings.

## Known failure modes

- Missing required 'q' query parameter returns a validation error
- Query returns empty results array if no matching verified services exist
- Low-quality or ambiguous queries may return loosely related services with low trust scores
- Service registry may not yet contain newly launched x402 endpoints
- Network or payment-processing failure returns a non-200 status
- Malformed natural-language query may produce irrelevant rankings

## 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 JSON array of matching services, each with: URL of the x402-payable endpoint, human-readable service name, per-call price in USD, and a numeric trust score (0–100) reflecting real purchase history and verification status.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Natural-language capability query"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "results": [
   {
    "url": "https://api.example.com/x402",
    "name": "CryptoFeed",
    "price_usd": 0.002,
    "trust_score": 78
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aegis-smart-discovery-x402-agent-service-registry-6b72fb31/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)