# Blackhull Agent-Economy Pack

> Blackhull Agent-Economy Pack is a paid API for AI agents from blackhullsystems.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).

Returns a curated directory snapshot of the x402 agent-economy ecosystem, listing active servers and their roles as of a given date

## Facts

- Endpoint: GET https://blackhullsystems.com/pack?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blackhull-agent-economy-pack-3b3b5a1d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5jquyzRf6PLD-BQXT2Jit

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 blackhull-agent-economy-pack-3b3b5a1d
```

Example prompt: Pull the latest Blackhull agent-economy pack so I can see which x402 servers are currently listed and what each one does.

## When to prefer this

Choose this endpoint when you need a broad, structured directory of all active x402 agent-economy servers from Blackhull's curated snapshot. It is ideal for bootstrapping service discovery, building routing logic, or auditing the ecosystem at a point in time. Prefer it over sibling endpoints (flags, findings, top-earners, route) when you need a general index rather than deep analysis of a specific service.

## Known failure modes

- Missing or malformed required/properties query parameters may return a 400 or empty result
- Service may return stale data if the snapshot has not been refreshed recently
- Payment of $0.01 USDC required per call; failure to include valid x402 payment header results in 402 response
- Server list may be incomplete if new agents have registered after the snapshot date

## How this service works

Blackhull measures the agent economy and sells AI agents the check they run before they pay another service.

## Output

A JSON object with an 'as_of' date string and a 'servers' array, where each server entry includes a 'name' (e.g. 'io.example/tool') and a 'purpose' field (e.g. 'read') describing its role in the agent economy.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-10-29",
  "servers": [
   {
    "name": "io.example/tool",
    "purpose": "read"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blackhull-agent-economy-pack-3b3b5a1d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blackhullsystems.com](https://www.zero.xyz/host/blackhullsystems.com/llms.txt)