# Unpaywall MCP Server

> Unpaywall MCP Server — smaboundless-unpaywall-mcp-server. Use this tool when you need to access open-access scholarly articles or check the availability of research papers. It solves problems of restricted access to academic content by providing DOI lookup, title search, and citation export via the Unpaywall API. The tool accepts inputs such as DOIs or article titles and returns outputs on open-access availability and citation information.

Canonical page: https://skillsregistry.net/skills/smaboundless-unpaywall-mcp-server  
JSON: https://api.skillsregistry.net/v1/skills/smaboundless-unpaywall-mcp-server

## Description

Enables querying open-access availability of scholarly articles via Unpaywall API, including DOI lookup, title search, and citation export.

## Trust

- **Trust score (0–1):** 0.70
- **Verification tier:** verified
- **Last scanned:** 2026-08-30

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** search
- **Updated:** 2026-08-30

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/k8g8qwxmtj)
- **Repository:** <https://github.com/SMABoundless/unpaywall-mcp-server>

## Use it

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": "smaboundless-unpaywall-mcp-server"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/smaboundless-unpaywall-mcp-server` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/smaboundless-unpaywall-mcp-server/pull`

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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