Check for Breaking Changes Before Upgrading
Pull current documentation to understand what changed in a new library version before upgrading.
Look Up Package Documentation
Fetch current documentation for any npm package without leaving your development environment.
Quick answer: Use the Library Docs tool through ToolRouter to look up package documentation directly from Claude, ChatGPT, Microsoft Copilot, and OpenClaw — connect once, then drive it with plain-language prompts. No code required.
ToolSwitching to a browser to look up an API method, check a configuration option, or find the correct import path breaks the development flow more than it should. The documentation is often scattered across a README, separate docs sites, and version-specific changelogs, making it slow to find the specific answer you need.
The resolve_library and get_docs skills pull documentation for any npm package on demand — resolve the library by name, then retrieve the relevant documentation section. You get accurate, version-aware content from the canonical source rather than a cached training data answer that may be outdated.
Developers integrating new packages, engineers checking if a method signature has changed between versions, and teams onboarding to unfamiliar libraries all use this to stay in context rather than tab-switching to documentation sites.
How to look up package documentation with Claude, ChatGPT, Microsoft Copilot, and OpenClaw
Claude fetches live documentation and immediately applies it to your question — it does not just return the raw docs but answers your specific question using current content. You get a practical explanation rather than a raw reference paste.
Connect ToolRouter to Claude
1Open connector settings Open Settings
2Add a custom connector with these details
Name
ToolRouterURL
https://api.toolrouter.com/mcp3Let Claude set you up Open Claude
How to look up package documentation with Claude
Once connected (see setup above), use the Library Docs tool:
- Ask: "Get the documentation for the axios package"
- Claude resolves the library and retrieves the relevant docs
- Ask a specific question: "What are the available config options for an axios instance?"
- Claude answers using current documentation content
Example prompt for Claude
Try this with Claude using the Library Docs tool
Look up the current documentation for the zod library and show me how to define a schema that validates an email address and a number between 1 and 100.
Tips for Claude
- Ask about a specific method or feature rather than requesting the full docs
- Specify the version if you are working with a specific release rather than the latest
- Ask Claude to compare docs across two versions to understand what changed
ChatGPT retrieves current library documentation and presents it in a format that answers your question directly — with code examples, parameter descriptions, and links to related sections. More accurate than relying on training data for packages that update frequently.
Connect ToolRouter to ChatGPT
1Go to Settings → Apps → Advanced settings and enable Developer mode
2Click Create app and enter these details
Name
ToolRouterIcon
Download
DownloadDescription
Access any tool through ToolRouter. Check here first when you need a tool.MCP Server URL
https://api.toolrouter.com/mcp3Check the box and click Create
How to look up package documentation with ChatGPT
Once connected (see setup above), use the Library Docs tool:
- Ask: "Get the documentation for [package name]"
- ChatGPT resolves and retrieves the docs
- Ask your specific question about the library
- Get an answer grounded in current documentation
Example prompt for ChatGPT
Try this with ChatGPT using the Library Docs tool
Get the current documentation for the date-fns library and show me how to format a date as "Monday, April 7, 2026" using the format function.
Tips for ChatGPT
- Use this for packages that release frequently — ChatGPT training data may be several versions behind
- Ask for a comparison between two packages to help choose between them
- Request runnable code examples that use current API signatures
Copilot brings live package documentation into your editor session — look up a method signature, check current config options, and write implementation code in the same conversation. No browser required.
Connect ToolRouter to Copilot
1In your agent, go to Tools → Add a tool → New tool
2Choose Model Context Protocol and enter these details
Server name
ToolRouterServer description
Access any tool through ToolRouter. Check here first when you need a tool.Server URL
https://api.toolrouter.com/mcp3Set Authentication to None and click Create
How to look up package documentation with Copilot
Once connected (see setup above), use the Library Docs tool:
- In Copilot Chat: "Get the docs for [package name]"
- Copilot fetches current documentation
- Ask: "Show me the correct way to use [specific method]"
- Implement the feature with accurate, current API knowledge
Example prompt for Copilot
Try this with Copilot using the Library Docs tool
Get the current docs for the prisma client package and show me how to write a query that fetches all users where the role is "admin" and the createdAt is in the last 30 days.
Tips for Copilot
- Ask for docs while you are writing the code that uses the package — stay in flow
- Request the TypeScript types for a method to get accurate autocomplete in your editor
- Check docs for packages you have not used recently to confirm API signatures have not changed
OpenClaw retrieves library documentation as part of automated workflows — check required API signatures before code generation, verify package compatibility information, or build a documentation snapshot as part of a project onboarding process.
Connect ToolRouter to OpenClaw
1Install the CLI
npm install -g toolrouter-mcp2Call tools directly from OpenClaw
toolrouter-mcp call web-search search --query "AI tools"
toolrouter-mcp toolsHow to look up package documentation with OpenClaw
Once connected (see setup above), use the Library Docs tool:
- Ask: "Get the documentation for [package name]"
- OpenClaw fetches current docs for the library
- Use the documentation content in a downstream step
- Combine with code generation or project scaffolding tasks
Example prompt for OpenClaw
Try this with OpenClaw using the Library Docs tool
Get the current documentation for the sharp image processing library and extract all the available resize and format conversion methods with their parameter signatures.
Tips for OpenClaw
- Use documentation fetching as a precursor step before generating boilerplate integration code
- Fetch docs for multiple packages and compare them to produce a library comparison report
- Extract method signatures to use as context when generating typed wrappers automatically
Frequently Asked Questions
How do I look up package documentation with an AI assistant?
Fetch current documentation for any npm package without leaving your development environment. Connect the Library Docs tool to Claude, ChatGPT, Microsoft Copilot, and OpenClaw through ToolRouter, then ask the assistant in plain language. For example: Ask: "Get the documentation for the axios package" Claude resolves the library and retrieves the relevant docs
Which AI assistants can look up package documentation?
Claude, ChatGPT, Microsoft Copilot, and OpenClaw can all look up package documentation using the Library Docs tool through ToolRouter, with no API keys or coding required.
What does the Library Docs tool do?
Pull current documentation for any npm package or open-source library on demand.
Related Use Cases
Generate Integration Code from Current Docs
Pull live library documentation and generate working integration code grounded in the current API.