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Custom MCP servers can be connected to Claude and ChatGPT

By PulseAugur Editorial · [4 sources] ·

Simon Willison has detailed how to connect custom Model Context Protocol (MCP) servers to the standard chat interfaces of both Claude and ChatGPT. While possible, the process involves several steps and is not immediately obvious. Another article explores implementing an MCP server using Python specifically for ChatGPT's developer mode, highlighting MCP as a JSON-RPC standard for LLMs to access external tools and data. AI

IMPACT Enables developers to extend the capabilities of popular LLM chat interfaces by integrating external tools and data sources.

RANK_REASON The cluster describes how to integrate a specific protocol (MCP) with existing AI chat interfaces, which is a technical how-to rather than a new model release or significant industry event.

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AI-generated summary · Google Gemini · from 4 sources. How we write summaries →

Custom MCP servers can be connected to Claude and ChatGPT

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The cluster describes how to integrate a specific protocol (MCP) with existing AI chat interfaces, which is a technical how-to rather than a new model release or significant industry event.
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4 independent sources
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product, other
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High
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108 days old
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COVERAGE [4]

  1. Simon Willison TIER_1 English(EN) ·

    Adding a custom MCP server to Claude and ChatGPT

    <p><strong>TIL:</strong> <a href="https://til.simonwillison.net/llms/mcp-in-claude-and-chatgpt">Adding a custom MCP server to Claude and ChatGPT</a></p> <p>Connecting a custom MCP server to Claude and ChatGPT's standard chat interfaces is possible, but can take quite a few steps.…

  2. Bluesky Jetstream — AI desk TIER_1 English(EN) · simonwillison.net ·

    A new TIL on adding custom MCP servers to both the ChatGPT and Claude regular chat interfaces - it's a little less obvious than I had hoped, but I got there in

    A new TIL on adding custom MCP servers to both the ChatGPT and Claude regular chat interfaces - it's a little less obvious than I had hoped, but I got there in the end til.simonwillison.net/llms/mcp-in-...

    LINKS til.simonwillison.net/…/mcp-in-claude-and…
  3. Medium — MCP tag TIER_1 English(EN) · DhanushKumar ·

    Implementing an MCP Server in Python for ChatGPT Developer Mode

    <div class="medium-feed-item"><p class="medium-feed-image"><a href="https://blog.stackademic.com/implementing-an-mcp-server-in-python-for-chatgpt-developer-mode-4fbe4265c7b5?source=rss------mcp-5"><img src="https://cdn-images-1.medium.com/max/679/0*XEXqz6fNtQTqAinj" width="679" /…

  4. Mastodon — mastodon.social TIER_1 English(EN) · [email protected] ·

    Adding a custom MCP server to Claude and ChatGPT https://simonwillison.net/2026/Jul/29/mcp-in-claude-and-chatgpt/#atom-everything # AI # LLM # Tech

    Adding a custom MCP server to Claude and ChatGPT https://simonwillison.net/2026/Jul/29/mcp-in-claude-and-chatgpt/#atom-everything # AI # LLM # Tech

    LINKS simonwillison.net/…/mcp-in-claude-and-cha…

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