# Crossref Scholarly Works Search via clonecho.builda.company

> Crossref Scholarly Works Search via clonecho.builda.company 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 Crossref's scholarly metadata index for academic works by keyword, returning titles, DOIs, and publisher information.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/crossref-works
- 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/crossref-scholarly-works-search-via-clonecho-builda-company-86527b3d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3o4HOrcbgaGiHS9QXOb30

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 crossref-scholarly-works-search-via-clonecho-builda-company-86527b3d -d '<json body>'
```

Example prompt: Can you search Crossref for scholarly works about 'CRISPR gene editing' and give me the titles, DOIs, and publishers of the top results?

## When to prefer this

Use this endpoint when you need to find academic papers, books, or other scholarly works by keyword and need their DOIs and publisher information from the authoritative Crossref registry. Prefer this over a general web search when you need structured bibliographic metadata, valid DOIs for citation purposes, or publisher attribution for academic content.

## Known failure modes

- Empty result set if query matches no indexed works
- Malformed or missing q parameter returns error or empty results
- Rate limiting or payment failure if x402 payment not processed
- Timeout if Crossref upstream API is slow or unavailable
- Ambiguous queries may return unrelated works

## How this service works

Searches Crossref scholarly metadata for works matching q, returning titles, DOIs and publishers. Query: ?q= Returns JSON.

## Output

A JSON array of scholarly works matching the query, each containing the work's title, DOI (Digital Object Identifier), and publisher name, sourced from the Crossref metadata index.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crossref-scholarly-works-search-via-clonecho-builda-company-86527b3d/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)