# cache-headers-check-bulk

> cache-headers-check-bulk is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Bulk-checks HTTP caching headers for up to 20 URLs in a single concurrent call, returning per-item results in input order with error fields and failure counts.

## Facts

- Endpoint: GET https://intel.rallylive.ca/bulk/site/cache-headers
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cache-headers-check-bulk-479016a3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uICw5IuiRK0Zha3tweFa3

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 cache-headers-check-bulk-479016a3
```

Example prompt: Check the cache headers for all 20 of these URLs at once and tell me which ones are missing Cache-Control headers or have misconfigured caching settings, including any that failed to respond.

## When to prefer this

Use this endpoint when you have a list of 2–20 URLs and need cache header analysis for all of them in a single API call rather than making sequential single-URL requests. It is ideal for site audits, post-deployment validation, or any workflow where you hold a batch of URLs and want concurrent processing with ordered results and per-item error handling. Prefer the single-URL endpoint when checking just one URL, or a different tool if your batch exceeds 20 URLs.

## Known failure modes

- Individual URL unreachable — per-item error field populated, rest of batch still returns
- Malformed or non-HTTP URL in input — per-item error with validation message
- Batch exceeds 20 URL limit — request rejected
- Network timeout on individual URL — error field set for that item, failure count incremented
- Payment not completed — 402 response, no results returned

## How this service works

Bulk cache headers check: up to 20 urls in one call, processed concurrently, results returned in input order with a per-item error field and a count of failures. Same answer per item as the single /site/cache-headers endpoint (Caching headers check). Batch enrichment for agents that hold a list. $0.01 per batch.

## Output

An ordered array of per-URL results matching the input order, each containing the parsed caching headers (e.g. Cache-Control, Expires, Pragma, ETag, Last-Modified) along with a per-item error field if the URL could not be reached or analyzed, plus a top-level count of total failures across the batch.

## 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",
     "properties": {}
    }
   },
   "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/cache-headers-check-bulk-479016a3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)