# PubMed Search CSV via NCBI E-utilities

> PubMed Search CSV via NCBI E-utilities is a paid API for AI agents from x402-v2-mint-pubmed-search.vercel.app, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-31).

Searches PubMed using NCBI E-utilities and returns results (count, ID list, titles, journals, publication dates) formatted as CSV, with up to 10 results per query, no API key required.

## Facts

- Endpoint: POST https://x402-v2-mint-pubmed-search.vercel.app/v1/pubmed-search/fmt/csv?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pubmed-search-csv-via-ncbi-e-utilities-ad9a8730
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kRVC5FMtMWWb9qgQezvQr

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 pubmed-search-csv-via-ncbi-e-utilities-ad9a8730 -d '<json body>'
```

Example prompt: Search PubMed for papers on CRISPR gene editing in cancer treatment and give me the top 10 results as a CSV with titles, journals, and publication dates.

## When to prefer this

Choose this endpoint when you need PubMed search results in CSV format for easy parsing, spreadsheet import, or downstream data processing, without needing to manage an NCBI API key. Ideal for agents performing biomedical literature discovery, evidence gathering, or research summarization pipelines that benefit from structured tabular output.

## Known failure modes

- Empty result set if query terms match no indexed articles
- NCBI rate limiting may occur under heavy usage since no API key is used
- Malformed or overly complex queries may return zero results
- retmax exceeding 10 is not supported and may be capped or rejected
- NCBI E-utilities downtime can cause upstream failures

## How this service works

[concierge csv] PubMed search via NCBI E-utilities (keyless). Query → count + idlist (retmax≤10) + optional title/journal/pubdate.

## Output

A CSV-formatted response containing the total result count, a list of up to 10 PubMed article IDs, and optional metadata fields including article title, journal name, and publication date for each result.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pubmed-search-csv-via-ncbi-e-utilities-ad9a8730/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-v2-mint-pubmed-search.vercel.app](https://www.zero.xyz/host/x402-v2-mint-pubmed-search.vercel.app/llms.txt)