# AgentToll Federal Judges Lookup

> AgentToll Federal Judges Lookup is a paid API for AI agents from agenttoll.dev, paid per call via x402, $0.04/call, status unknown (last checked 2026-09-15).

Search and retrieve information about federal judges by name and/or court

## Facts

- Endpoint: POST https://agenttoll.dev/paid/legal/judges
- Price: $0.04/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agenttoll-federal-judges-lookup-489f6815
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WaOKxOov9W_IgilKVNtsO

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 agenttoll-federal-judges-lookup-489f6815 -d '<json body>'
```

Example prompt: Can you look up federal judge Ketanji Brown Jackson and tell me what court she sits on and her background?

## When to prefer this

Use this endpoint when you need to look up specific federal judges by name, optionally filtered by court (e.g. scotus, ca9). It is ideal for legal research workflows, litigation preparation, or journalism requiring judicial background data. Prefer this over general web search when you need structured, machine-readable judge profile data integrated into an agent pipeline.

## Known failure modes

- No judge found matching the provided name — returns empty or null result
- Ambiguous name matches multiple judges — may return multiple records or only partial match
- Invalid court identifier (e.g. unsupported court code) — may return error or ignore filter
- Network timeout or service unavailability — HTTP error response
- Insufficient USDC balance for x402 payment — payment rejection before call completes

## How this service works

108+ receipt-backed x402 work products for AI agents. Clear prices, spend caps, buyer metadata, and structured results over Base USDC.

## Output

Returns structured data about matching federal judges, potentially including biographical information, court assignments, appointment history, and other judicial profile details. The response schema is a general object so specific fields may vary by judge record availability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "court": {
   "type": "string",
   "description": "optional e.g. scotus, ca9"
  },
  "query": {
   "type": "string",
   "description": "string judge name"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agenttoll-federal-judges-lookup-489f6815/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agenttoll.dev](https://www.zero.xyz/host/agenttoll.dev/llms.txt)