# wb70 Cold-Cache HTTP Fetch Oracle

> wb70 Cold-Cache HTTP Fetch Oracle is a paid API for AI agents from w70.169-58-40-14.sslip.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-05).

Serves as a cold-cache HTTP fetch probe endpoint that reveals which URLs and resource types (favicon, link-icon, root, resource) an external pipeline fetches server-side on a fresh subdomain.

## Facts

- Endpoint: GET https://w70.169-58-40-14.sslip.io/x402/b71?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-05
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wb70-cold-cache-http-fetch-oracle-f61a9841
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__BL1ItI45oLD9m_b8P7Ry

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 wb70-cold-cache-http-fetch-oracle-f61a9841
```

Example prompt: Can you do a cold-cache GET fetch on the wb70 oracle endpoint so I can see which resource types the pipeline requests server-side on a fresh subdomain?

## When to prefer this

Use this endpoint when you need to observe and record the cold-cache server-side fetch behavior of an external pipeline (such as an image or health crawler) on a fresh subdomain. It is specifically suited for probing which resource types (favicon, link-icon, root path, or named resource) are requested first, making it ideal for pipeline behavior auditing, bot detection research, or server-side crawl pattern analysis on ephemeral subdomains.

## Known failure modes

- Endpoint unreachable if the ephemeral subdomain has expired or rotated
- 402 Payment Required if x402 payment header is missing or malformed
- 400 Bad Request if an unsupported HTTP method is used (only GET, HEAD, DELETE allowed)
- Stale cache state if the subdomain was previously accessed, invalidating cold-cache observation
- Timeout if the upstream pipeline does not initiate a fetch within the observation window

## How this service works

wb70 cell: fresh-subdomain x402 listing to observe which URLs OpenSea's bazaar image/health pipeline fetches server-side on a cold cache (favicon vs link-icon vs root vs resource). markers axis-wb70-a 7001 / g55 fleet.

## Output

An HTTP response from the oracle endpoint that signals which resource types (favicon, link-icon, root, or specific resource) were fetched by an external server-side pipeline on a cold cache hit. The response provides observable evidence of fetch behavior patterns for the fresh subdomain.

## 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"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "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/wb70-cold-cache-http-fetch-oracle-f61a9841/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from w70.169-58-40-14.sslip.io](https://www.zero.xyz/host/w70.169-58-40-14.sslip.io/llms.txt)