# Crossref API and MCP

Scholarly metadata and DOIs from Crossref. 1 tool through Agentik.

## Capabilities

- [Scientific papers](/tools/knowledge/papers.md): 4 tools, from $0.00015 per call, some tools free.

## Tools

- [DOI metadata search](/providers/crossref/search-works.md)

## Other providers

- [Litescrape](/providers/litescrape.md): 118 tools, from $0.00015 per call.
- [OpenAlex](/providers/openalex.md): 1 tool, with no charge per call.
- [Serper](/providers/serper.md): 10 tools, from $0.001 per credit.

## Questions

### Do I need an account with Crossref?

No. Agentik holds the connection to Crossref. Your agent calls it with your Agentik key, and each call is paid from your balance at Crossref's price.

### Is the data the same as the direct API?

Yes. Each tool is one Crossref endpoint with its real inputs. Agentik adds the price check, the balance and the receipt.

[Providers](/providers.md) · [Connection guide](/connect.md) · [Billing](/docs/billing.md)

---

[HTML page](/providers/crossref) · [Agent index](/llms.txt)