# ArrayExpress Functional Genomics Search via BioStudies

> ArrayExpress Functional Genomics Search via BioStudies 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).

Search EBI ArrayExpress functional-genomics experiments by keyword query, returning structured JSON results via the BioStudies API.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/arrayexpress-search
- 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/arrayexpress-functional-genomics-search-via-biostudies-efffa7ff
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IIoucX00p2jKSuIx_Y3s7

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 arrayexpress-functional-genomics-search-via-biostudies-efffa7ff -d '<json body>'
```

Example prompt: Search ArrayExpress for functional genomics experiments related to 'BRCA1 RNA-seq human breast cancer' and give me the top results including study accessions and descriptions.

## When to prefer this

Use this endpoint when you need to search the EBI ArrayExpress / BioStudies database specifically for functional genomics experiment records — RNA-seq, microarray, ChIP-seq, ATAC-seq, etc. Prefer it over general web search when you need structured, programmatic access to curated bioinformatics study metadata from EBI.

## Known failure modes

- Empty results if the query term matches no experiments in ArrayExpress
- Malformed or missing q parameter returns an error or empty response
- BioStudies API downstream unavailability causes request failure
- Very broad queries may return too many results without pagination control
- Non-biological queries return empty or irrelevant results

## How this service works

Search EBI ArrayExpress functional-genomics experiments (via BioStudies) by query {q}. Query: ?q= Returns JSON.

## Output

A JSON array of ArrayExpress/BioStudies experiment records matching the query, including study accession IDs, titles, descriptions, organism, assay type, and links to the full experiment entries on EBI.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arrayexpress-functional-genomics-search-via-biostudies-efffa7ff/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)