# AI Rook Legal Research

> AI Rook Legal Research is a paid API for AI agents from agents.ai-rook.com, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-14).

Performs legal research across case law, statutes, constitutional rights, and federal regulations, with every result cryptographically anchored onchain via Hedera Consensus Service for tamper-evident provenance.

## Facts

- Endpoint: POST https://agents.ai-rook.com/api/legal-research
- Price: $0.025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ai-rook-legal-research-4f9b4a86
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oWFjD4UMv9FI2PzP7mv0e

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 ai-rook-legal-research-4f9b4a86 -d '<json body>'
```

Example prompt: Can you look up case law and relevant statutes on Fourth Amendment search and seizure rights in California, and give me results with onchain provenance so I can verify the sources are tamper-proof?

## When to prefer this

Choose this endpoint when legal research results must carry verifiable, tamper-evident provenance for audit trails, litigation support, or regulatory compliance — specifically when you need cryptographic proof of source integrity via blockchain anchoring. Prefer over generic legal search when downstream use requires verifiable citations that cannot be disputed.

## Known failure modes

- Query too vague returns no relevant results
- Jurisdiction not supported returns empty constitutional rights data
- Rate limiting or payment failure at x402 layer returns 402 Payment Required
- Network timeout if HCS anchoring is slow
- Malformed POST body returns 400 Bad Request

## How this service works

Legal research with onchain provenance — CourtListener case law, Cornell LII statutes, constitutional rights by jurisdiction, Federal Register. Every result SHA-256 hashed, Merkle-batched, HCS consensus-anchored (topic 0.0.10793271), DocuSign-style per-page seals. [OPEN HOUSE WEEK: $0.001 through Aug 9 00:00 UTC]

## Output

Returns legal research results from CourtListener case law, Cornell LII statutes, constitutional rights data by jurisdiction, and Federal Register entries. Each result is SHA-256 hashed, batched into a Merkle tree, and anchored to Hedera Consensus Service topic 0.0.10793271, with DocuSign-style per-page seals for tamper-evident provenance.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ai-rook-legal-research-4f9b4a86/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.ai-rook.com](https://www.zero.xyz/host/agents.ai-rook.com/llms.txt)