# AgentDiet Certificate Transparency Lookup

> AgentDiet Certificate Transparency Lookup is a paid API for AI agents from rag-diet.agentdiet.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Queries certificate transparency logs for a given domain to retrieve SSL/TLS certificate issuance records

## Facts

- Endpoint: GET https://rag-diet.agentdiet.dev/v1/cert-transparency?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentdiet-certificate-transparency-lookup-e2e3e301
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oPiYWRVJKazYJzdUNGy8h

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 agentdiet-certificate-transparency-lookup-e2e3e301
```

Example prompt: Can you check the certificate transparency logs for example.com and tell me what SSL certificates have been issued for it?

## When to prefer this

Choose this endpoint when you need a paid, programmatic, agent-friendly certificate transparency lookup that integrates with x402/USDC micropayment flows on Base. It is particularly suited for AI agent pipelines that need CT data with compressed, distilled responses rather than raw bulk CT log output. Prefer alternatives (e.g., crt.sh) for free, high-volume, or human-facing CT lookups.

## Known failure modes

- Missing or invalid domain query parameter returns an error
- Domain not found in certificate transparency logs returns empty data
- Payment failure (insufficient USDC balance) blocks the request
- Network timeout if upstream CT log services are unavailable
- Malformed domain string may result in a lookup error

## How this service works

Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://rag-diet.agentdiet.dev settling in USDC on Base.

## Output

Returns a JSON object with a status field ('ok'), a data object containing certificate transparency records for the queried domain, and an roi_proof object showing a compression_ratio_pct (e.g. 91.4%) indicating how efficiently the response was distilled.

## 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",
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "domain": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentdiet-certificate-transparency-lookup-e2e3e301/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rag-diet.agentdiet.dev](https://www.zero.xyz/host/rag-diet.agentdiet.dev/llms.txt)