# UCUM Clinical Units of Measure Search

> UCUM Clinical Units of Measure Search is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Searches UCUM (Unified Code for Units of Measure) clinical units by query string, returning matching unit codes and full names as JSON.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/clinicaltables-ucum-units
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ucum-clinical-units-of-measure-search-606d366b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QxfazjawqYVO9xHcKb9oJ

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 ucum-clinical-units-of-measure-search-606d366b -d '<json body>'
```

Example prompt: Can you find me the UCUM unit codes and full names that match 'milligram per deciliter'? I need the standardized clinical unit for a lab result field.

## When to prefer this

Use this endpoint when you need to resolve or validate clinical units of measure against the UCUM standard — especially for HL7 FHIR resource construction, EHR data entry, lab result normalization, or any healthcare application requiring standardized unit codes. Prefer this over generic unit conversion APIs when you specifically need UCUM-compliant clinical terminology.

## Known failure modes

- Empty result set when query matches no known UCUM units
- Malformed or missing query parameter returns error or empty response
- Overly generic query (e.g. 'm') returns too many results to be useful
- Network timeout or service unavailability returns HTTP error
- Payment required / x402 authentication failure if USDC payment not processed

## How this service works

Search UCUM clinical units of measure (code and full name) by query {q}. Query: ?q= Returns JSON.

## Output

A JSON array of matching UCUM units, each containing the unit code (e.g. 'mg/dL') and its full descriptive name, filtered by the query string provided.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ucum-clinical-units-of-measure-search-606d366b/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)