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How to connect PDF Vector to Claude

Connect Claude Web, Desktop and Cowork to PDF Vector MCP. Summarize key findings from research paper, extract tables from grant pdf into json, and more using natural language, with authentication handled for you.

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PDF Vector is a document parsing and vector-search service that converts PDFs into markdown and structured data. Use it to quickly find, extract, and index details from academic papers and grant documents.

10 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your PDF Vector account to Claude via Composio Connect, enabling it to summarize key findings from research paper, extract tables from grant PDF into JSON, search similar publications for this abstract, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate PDF Vector with

ChatGPT WorkHermes

Connecting PDF Vector to Claude Web, Desktop, and Cowork

1. Open Customize

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

2. Add the Composio MCP server

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

3. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

4. Connect your PDF Vector account

Back in Claude, ask it to connect to PDF Vector or give it any PDF Vector-related task.

For example, ask Claude to:

  • "Summarize key findings from research paper"
  • "Extract tables from grant PDF into JSON"
  • "Search similar publications for this abstract"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your PDF Vector account is ready to use.

What is the PDF Vector Claude Connector, and what's possible with it?

The PDF Vector MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your PDF Vector account. It provides structured and secure access so your agent can perform PDF Vector operations on your behalf.

Troubleshooting

1. Why does Claude not use the Composio connector for PDF Vector?

The connector can show as connected, but Claude must use it in each PDF Vector conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to PDF Vector again.

2. Why does Claude show an MCP server error before PDF Vector connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for PDF Vector.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect PDF Vector.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the PDF Vector authorization link not work?

The Composio connector is one server. Your PDF Vector account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the PDF Vector connection.
  • Composio creates a fresh PDF Vector authorization link.
  • Open that link in your browser and finish the PDF Vector sign-in.

4. Why do PDF Vector actions fail after they worked before?

The PDF Vector connection can expire or lose permission.

  • Ask Claude to inspect the PDF Vector connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the PDF Vector account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in PDF Vector.
  • If the action still fails with a permission error, check that the connected account has that permission in PDF Vector itself.

5. How do I switch to a different PDF Vector account?

Claude can manage the PDF Vector connection for you.

  • Ask Claude to disconnect or delete the current PDF Vector account.
  • Ask Claude to connect PDF Vector again.
  • Open the new Composio authorization link for PDF Vector.
  • Sign in with the other PDF Vector account in the browser.
  • After the account connects, ask Claude to retry the PDF Vector task.

6. Why is my PDF Vector connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your PDF Vector connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If PDF Vector tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect PDF Vector.
TOOLS

Supported Tools

Every PDF Vector action and event your agent gets out of the box.

Ask Document

Answer one question from a general, identity, invoice, or bank-statement document.

Extract Document Data

Extract schema-constrained structured data from a general, identity, invoice, or bank-statement document.

Fetch Publications

Resolve up to 100 publication identifiers with provider auto-detection and return both resolved records and per-identifier errors.

Find Citations

Find relevant academic citations for each sentence in a paragraph and preserve provider-specific partial errors.

Find Similar Papers

Find papers related to a seed publication using citation-network similarity, optionally including relationship edges.

Get Paper Graph

Retrieve a publication plus one independently offset-controlled page of citing papers and one page of referenced papers.

Parse Academic Paper

Resolve an academic identifier or provider URL to a public PDF and parse it to markdown.

Parse Document

Convert a general, identity, invoice, or bank-statement document to markdown.

Search Publications

Search academic publications across selected databases and return one offset-controlled page, including any provider-specific partial errors.

Search Research Grants

Search US, EU, and UK research-grant providers and return one explicit offset-controlled page with partial provider errors.

FRAMEWORKS

How to build PDF Vector MCP Agent with another framework

ChatGPT Work logo

ChatGPT Work

Use PDF Vector MCP with ChatGPT Work

Hermes logo

Hermes

Use PDF Vector MCP with Hermes

FAQ

Frequently asked questions

With a standalone PDF Vector MCP server, the agents and LLMs can only access a fixed set of PDF Vector tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from PDF Vector and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right PDF Vector tools.

Yes, absolutely. You can configure which PDF Vector scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your PDF Vector data and credentials are handled as safely as possible.

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