# SiteSignal API Decision Pack

> SiteSignal API Decision Pack is a paid API for AI agents from trinity-throw-thursday-gravity.trycloudflare.com, paid per call via x402, $0.08/call, status down (last checked 2026-09-15).

Combines public API documentation-readiness, TLS, response-header, and optional changelog evidence into a conservative API adoption decision pack

## Facts

- Endpoint: GET https://trinity-throw-thursday-gravity.trycloudflare.com/x402/api-decision-pack
- Price: $0.08/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitesignal-api-decision-pack-b4f88bca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_33ENdgFSoSHGk_n7OUK0t

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 sitesignal-api-decision-pack-b4f88bca
```

Example prompt: Before I integrate Stripe's API into our checkout flow, can you run a decision pack on https://docs.stripe.com/api checking its documentation readiness, TLS posture, and response headers — use case is e-commerce payment processing with a Node.js stack?

## When to prefer this

Choose this endpoint when you need a multi-signal, consolidated pre-integration assessment of a third-party API rather than checking TLS, headers, and docs separately. It is especially valuable when your agent needs a single conservative recommendation before committing to an API dependency, or when you want to combine documentation maturity with security posture in one call. Prefer sibling endpoints (SiteSignal TLS Security Evidence, SiteSignal Email Domain Security) when you need only one signal type in isolation.

## Known failure modes

- Provided docsUrl is inaccessible or returns non-200 status, resulting in incomplete evidence
- TLS inspection fails if hostname is internal or behind a firewall
- Changelog URL is malformed or returns non-parseable content, changelog evidence is skipped
- Use case description too vague to generate meaningful fit assessment
- Cloudflare tunnel intermittently unavailable, returning 5xx errors

## How this service works

Combine public API documentation-readiness, TLS, response-header, and optional changelog evidence into a conservative decision pack.

## Output

Returns a structured decision pack containing: API documentation readiness signals, TLS certificate and security header evidence, response header analysis, and optionally changelog evidence — synthesized into a conservative go/no-go or risk-qualified recommendation for API adoption.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "docsUrl",
      "useCase"
     ],
     "properties": {
      "docsUrl": {
       "type": "string",
       "format": "uri"
      },
      "useCase": {
       "type": "string"
      },
      "targetStack": {
       "type": "string"
      },
      "changeWindow": {
       "type": "string"
      },
      "changelogUrl": {
       "type": "string",
       "format": "uri"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitesignal-api-decision-pack-b4f88bca/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from trinity-throw-thursday-gravity.trycloudflare.com](https://www.zero.xyz/host/trinity-throw-thursday-gravity.trycloudflare.com/llms.txt)