# NLM Clinical Tables Procedure Search

> NLM Clinical Tables Procedure Search is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Searches common medical procedure names from the NLM Clinical Tables procedures list by a free-text query string.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/clinicaltables-procedures
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nlm-clinical-tables-procedure-search-49c52fe4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9u1yQk9suFT37_aqohp2I

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 nlm-clinical-tables-procedure-search-49c52fe4 -d '<json body>'
```

Example prompt: Can you search the NLM Clinical Tables for medical procedures matching 'appendectomy' and show me what comes back?

## When to prefer this

Use this endpoint when you need to look up or autocomplete standardized medical procedure names from the authoritative NLM Clinical Tables source, especially for healthcare applications needing controlled vocabulary for procedures.

## Known failure modes

- Empty query string returns no results or error
- Query with no matching procedures returns empty result set
- NLM upstream service unavailable causes failure
- Payment not processed results in 402 response
- Misspelled query returns zero or irrelevant results

## How this service works

Search common medical procedure names from the NLM Clinical Tables procedures list by query {q}. Query: ?q= Returns JSON.

## Output

A JSON array or object containing matching medical procedure names from the NLM Clinical Tables procedures list that match the provided query string.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nlm-clinical-tables-procedure-search-49c52fe4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)