# crossref

> Use this tool when you need to retrieve metadata for academic papers, such as DOIs, authors, and publication dates, or when searching for specific research articles. It solves problems related to accessing and organizing academic literature, providing a free and authentication-free interface to the Crossref database. The tool accepts search queries and DOIs as input and returns relevant metadata as output.

Canonical page: https://skillsregistry.net/skills/io-github-pipeworx-io-crossref  
JSON: https://api.skillsregistry.net/v1/skills/io-github-pipeworx-io-crossref

## Description

Crossref MCP — wraps the Crossref REST API (academic papers, free, no auth)

## Trust

- **Trust score (0–1):** 0.85
- **Verification tier:** verified
- **Last scanned:** 2026-09-02

## Facts

- **Version:** 0.1.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** api-integration
- **Updated:** 2026-09-02

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/io.github.pipeworx-io%2Fcrossref)
- **Repository:** <https://github.com/pipeworx-io/mcp-crossref>

## Use it

MCP endpoint published by the skill: `https://gateway.pipeworx.io/crossref/mcp`

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "io-github-pipeworx-io-crossref"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/io-github-pipeworx-io-crossref` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/io-github-pipeworx-io-crossref/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt