# NCBI Taxonomy E-Search via ClonEcho

> NCBI Taxonomy E-Search via ClonEcho 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 the NCBI Taxonomy database and returns matching taxon UIDs for a given query string using NCBI E-utilities.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/ncbi-esearch-taxonomy
- 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/ncbi-taxonomy-e-search-via-clonecho-9605b921
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aq2grKJxwPX5xRCFdsIGs

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 ncbi-taxonomy-e-search-via-clonecho-9605b921 -d '<json body>'
```

Example prompt: Search the NCBI Taxonomy database for 'Escherichia coli' and give me the matching taxon UIDs.

## When to prefer this

Use this endpoint when you need to resolve organism or species names to NCBI Taxonomy UIDs for use in downstream bioinformatics queries, database lookups, or genomic data retrieval pipelines. Prefer this over manual NCBI web searches when automating taxonomy resolution at scale.

## Known failure modes

- No matching taxon UIDs found for obscure or misspelled organism names, returning empty result set
- Invalid or malformed query string may return an error or empty results
- NCBI E-utilities service downtime causing upstream failures
- Rate limiting or upstream NCBI API throttling if query volume is high

## How this service works

Search the NCBI Taxonomy database and return matching taxon UIDs for query {q} via E-utilities. Query: ?q= Returns JSON.

## Output

A JSON response containing a list of NCBI taxon UIDs that match the submitted query string, sourced from the NCBI E-utilities Taxonomy search endpoint.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ncbi-taxonomy-e-search-via-clonecho-9605b921/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)