Polydev MCP server

Q: How do I add Polydev MCP to Claude Code?

Run `claude mcp add polydev -- npx -y polydev-ai` in your terminal. Add `--scope user` to make it available in every project.

Q: How do I add Polydev MCP to Cursor?

Open `~/.cursor/mcp.json` and add the server under `mcpServers`, using the Cursor config shown in the install section above.

Commit Nov 7, 2026

polydev-ai/polydev · javascript · Apache-2.0

Enables AI clients to access multiple different LLMs like GPT, Claude, and Gemini through a single interface within your existing application.

Also known as polydev-ai/polydev, polydev-ai

stdio AI & LLM Tools

Install GitHub ↗

Stars: 2
Tools: —
Downloads, 30 days: —
Latest version: —
Last commit: Nov 7, 2026
License: Apache-2.0

What is Polydev MCP?

Polydev enables AI clients to access multiple different LLMs like GPT, Claude, and Gemini through a single interface within your existing application.

Summary generated from the project's README

About Polydev MCP server

Polydev acts as a bridge that allows AI clients to access various large language models through a single interface. Instead of replacing your current application model, it functions as a tool that your existing environment can call to get perspectives from other providers like GPT, Claude, Gemini, or Grok. This is useful for developers using MCP clients such as Claude Code, Cursor, Windsurf, or GitHub Copilot who need to cross-reference answers or use specific models for specialized tasks.

You can use the hosted version by adding a specific URL to your client and signing in via OAuth, or you can install the local server using npm. The local installation allows you to use your own API keys or even connect your ChatGPT plan to cover costs. The server provides tools like ask_model for prompting, list_models to see available options, and generate_image for creating visuals with OpenAI or Google models. Every response includes a note indicating which account or key paid for the request.

What you can do with it

1Cross-model verificationAsk a different model to review code or migrations generated by your primary AI assistant.
2Multi-model comparisonRequest answers from multiple models simultaneously to compare their technical perspectives.
3AI image generationCreate visual assets directly through your coding environment using specific image models.

Written from the project's README. Every use case is checked against a quote from it.

How to install Polydev MCP

Formats verified 10 Nov 2026Add to Cursor Add to Goose

Claude CodeCursorVS CodeVS Code CLIClaude DesktopCodexCodex config.tomlGemini CLIGemini settings.json

$ claude mcp add polydev -- npx -y polydev-ai

~/.cursor/mcp.json

{
  "mcpServers": {
    "polydev": {
      "command": "npx",
      "args": [
        "-y",
        "polydev-ai"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "polydev": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "polydev-ai"
      ]
    }
  }
}

$ code --add-mcp '{"name":"polydev","type":"stdio","command":"npx","args":["-y","polydev-ai"]}'

claude_desktop_config.json

{
  "mcpServers": {
    "polydev": {
      "command": "npx",
      "args": [
        "-y",
        "polydev-ai"
      ]
    }
  }
}

$ codex mcp add polydev -- npx -y polydev-ai

~/.codex/config.toml

[mcp_servers.polydev]
command = "npx"
args = ["-y", "polydev-ai"]

$ gemini mcp add -s user polydev npx -- -y polydev-ai

~/.gemini/settings.json

{
  "mcpServers": {
    "polydev": {
      "command": "npx",
      "args": [
        "-y",
        "polydev-ai"
      ]
    }
  }
}

Set 1 environment variable before starting the server (below).Setup guides:Claude Code Cursor VS Code Claude Desktop

Configuration

POLYDEV_USER_TOKEN

Name	Description
POLYDEV_USER_TOKEN	—

Automated checks

Ran Nov 14, 2026Full report →

83/100

Not verified yet. A server needs a score of 80, no serious finding, and enough data for us to check. How checks work · What to fix for more points

Show this score in your README

Source repository linked and reachablepolydev-ai/polydev is public and reachablegithub.com/polydev-ai/polydev ↗Pass
Package names this repository as its sourcepolydev-ai names polydev-ai/polydev as sourcenpmjs.com/package/polydev-ai ↗Pass
Build provenance (Sigstore attestation)No build attestation published for this releaseNot checked
Open source license (OSI)Apache-2.0spdx.org/licenses/Apache-2.0.html ↗Pass
Commit or release in the last yearLast commit or release 2026-11-07github.com/polydev-ai/polydev ↗Pass
OpenSSF ScorecardNot checked
Package name not close to a popular packageNo popular package one edit away from polydev-aiPass
No critical advisory in the package or its dependenciesNot checked
No hidden instructions to the model0 tool descriptions and the README read; no override phrases, credential paths or hidden charactersPass
Destructive tools are labelledNot checked
Remote endpoint answers the MCP handshakeNot checked

README

View on GitHub

Polydev

What it is

Polydev is an MCP server: a tool your app calls. It doesn't replace your app's model.

Claude, ChatGPT, Claude Code, Codex, Cursor, Copilot, Cline, Windsurf, Zed and other MCP clients keep their own model and their own sign-in. When you want another model for a task, say "have GPT check this migration", the app calls Polydev, which asks that model and returns the answer. Name one model, several, or none to use your default set.

Your app (its own model) -> Polydev ask_model -> GPT, Claude, Gemini, Grok... -> answer + what paid for it

Every answer ends with a "Paid by:" line, so you always know whether your ChatGPT plan, your own key or Polydev's free requests paid for it.

Tools:

Tool	What it does
`ask_model`	Send a prompt to one model (`model`), a list (`models`) or your default set, and get each answer with what paid for it. `get_perspectives` is the older name and still works
`list_models`	List the models you can reach and what pays for each
`search_x`	Search X (Twitter) with xAI's Grok (needs your own xAI key)
`rank_perspectives`	Record which answer helped most; rankings feed the public leaderboard
`generate_image`	Make an image with OpenAI or Google models, such as Nano Banana (local server only)
`connect_chatgpt_plan` / `chatgpt_plan_status`	Continue with ChatGPT so your ChatGPT plan pays for OpenAI models (local server only)
`login` / `get_auth_status`	Sign in to Polydev in the browser; show what's connected (local server only)

Add it without installing anything

Polydev is a hosted MCP server. Add this URL to your app and sign in once (OAuth):

https://polydev.ai/mcp

Claude (web, desktop, mobile): Settings → Connectors → Add custom connector, paste the URL, then Connect.
ChatGPT: add a custom MCP server in the apps settings, paste the URL, choose OAuth.
Claude Code: claude mcp add --transport http polydev https://polydev.ai/mcp, then /mcp to sign in.
Codex: codex mcp add polydev --url https://polydev.ai/mcp, then codex mcp login polydev.
Cursor, VS Code, Windsurf and others: one-click links and config at polydev.ai/install.

The hosted server answers with your API keys, your OpenRouter key or the free requests. To also use your ChatGPT plan, the Claude Code or Codex you're signed in to on this machine, and image models, install the local server below. (ChatGPT plan use on the hosted server is waiting on OpenAI's approval.)

Install locally (npm)

You need Node.js 20 or newer and a free Polydev account.

Claude Code

claude mcp add polydev -- npx -y polydev-ai@latest

Codex

Add to ~/.codex/config.toml:

[mcp_servers.polydev]
command = "npx"
args = ["-y", "polydev-ai@latest"]
tool_timeout_sec = 300

Some models take a while to answer, so raise the tool timeout.

Cursor, Cline, Windsurf

Add to your client's MCP config (for Cursor, ~/.cursor/mcp.json):

{
  "mcpServers": {
    "polydev": {
      "command": "npx",
      "args": ["-y", "polydev-ai@latest"]
    }
  }
}

GitHub Copilot in VS Code

Add to .vscode/mcp.json:

{
  "servers": {
    "polydev": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "polydev-ai@latest"]
    }
  }
}

Zed and other MCP clients

Use the same command, npx -y polydev-ai@latest, as a stdio server in the client's MCP settings.

Sign in

The hosted server signs you in with OAuth when your app first connects. For the local server, ask your agent to run the Polydev login tool. It opens your browser, and once you sign in the token is saved on this machine (in ~/.polydev.env).

Other ways:

From a terminal: npx -p polydev-ai polydev-login
Advanced, for machines without a browser: copy a token from polydev.ai/dashboard/mcp-tokens and set it in the server's environment:

"env": { "POLYDEV_USER_TOKEN": "pd_your_token_here" }

In sandboxes without a browser, pass the token to the login tool as user_token.

Continue with ChatGPT (local server)

To let your ChatGPT plan (Plus or Pro) pay for OpenAI models, ask your app to run connect_chatgpt_plan, or from a terminal:

npx polydev-ai chatgpt login     # also: chatgpt status | chatgpt models | chatgpt logout

This uses OpenAI's Sign in with ChatGPT. Your tokens stay on this machine in ~/.polydev (file mode 0600) and never reach Polydev's servers. Usage counts against your plan's limits, which you can set in ChatGPT's usage settings. If you hit the limit, Polydev says so and the answer comes from your API key or the free requests instead.

Usage

Ask your agent in plain words:

Have GPT check this migration before I run it on prod.
Ask Gemini and Grok whether Redis or Postgres suits session storage here.
Make a 1200x630 cover for this post with Nano Banana.

Or call the tool directly:

{
  "tool": "ask_model",
  "arguments": {
    "model": "gpt-6.1-sol",
    "prompt": "Check this migration for anything that could lock the table: <sql>"
  }
}

Include the relevant code, errors and constraints in the prompt. The other model only sees what you send.

Cost: free

Polydev has no plans, tiers or credits, and it charges nothing. The tokens are paid by your own access:

Your ChatGPT plan (local server), through Continue with ChatGPT. See above.
Your local CLIs (local server). Polydev runs the Claude Code (claude -p) or Codex you're already signed in to, unmodified and under your own login, with your settings, hooks and MCP servers turned off for that call. Polydev never reads their credentials. These calls count against your own plan's limits. Polydev skips the CLI of the app that called it.
Your own API keys. Add keys for OpenAI, Anthropic, Google, xAI, OpenRouter, Cerebras and others at polydev.ai/dashboard/models. The provider bills you directly.
A one-time free allowance. Every account gets 10 requests on Polydev's keys, never more than $1 in total, served by each provider's newest low-cost model. search_x is not part of it.

Models come from a live catalogue that is updated nightly. See polydev.ai/docs for the current list.

Privacy

Your prompts go to the model providers you chose. Prompts from connected apps are used only to answer you: never for training, never in datasets, never sold. Prompt and response text is deleted after 30 days. Disconnect an app at any time in Dashboard → Connected apps. Full policy: polydev.ai/privacy.

License

Apache-2.0.

Read full README

Polydev MCP questions

How do I add Polydev MCP to Claude Code?

Run claude mcp add polydev -- npx -y polydev-ai in your terminal. Add --scope user to make it available in every project.

How do I add Polydev MCP to Cursor?

Open ~/.cursor/mcp.json and add the server under mcpServers, using the Cursor config shown in the install section above.

How much does Polydev cost?

Polydev is free and does not have plans or tiers; costs are covered by your own API keys, your existing ChatGPT plan, or a small one-time free allowance.

Can I use my existing ChatGPT Plus plan with Polydev?

Yes, if you install the local server, you can use the 'connect_chatgpt_plan' tool to have your ChatGPT plan pay for OpenAI models.

Is my data used for training?

No, prompts from connected apps are used only to answer you and are never used for training or sold.

Facts

Nov 15, 2026

Stars: 2
Downloads, 30 days: —
Latest version: —
Last commit: Nov 7, 2026
License: Apache-2.0
Transport: stdio
Package: polydev-ai

polydev-ai ↗

Community publisher

Published by an independent maintainer.

Alternatives

Works with

Claude Code Cursor VS Code Claude Desktop Codex Gemini CLI Windsurf Devin

Badge for your README

Show your HostedMCP checks score. The badge links readers to install instructions for every client.

[![HostedMCP checks](https://api.hostedmcp.org/v1/badge/server/polydev-ai/polydev.svg)](https://hostedmcp.org/servers/polydev-ai/polydev/checks)

Maintainer?

Claim this listing to edit it and add the HostedMCP badge to your README.

Claim listing

Before you install

Servers run with the permissions you give them. Use the narrowest token or database role that does the job.

Polydev MCP server

Commit Nov 7, 2026

polydev-ai/polydev · javascript · Apache-2.0

Enables AI clients to access multiple different LLMs like GPT, Claude, and Gemini through a single interface within your existing application.

Also known as polydev-ai/polydev, polydev-ai

stdio AI & LLM Tools

Install GitHub ↗

Stars: 2
Tools: —
Downloads, 30 days: —
Latest version: —
Last commit: Nov 7, 2026
License: Apache-2.0

What is Polydev MCP?

Polydev enables AI clients to access multiple different LLMs like GPT, Claude, and Gemini through a single interface within your existing application.

Summary generated from the project's README

About Polydev MCP server

What you can do with it

1Cross-model verificationAsk a different model to review code or migrations generated by your primary AI assistant.
2Multi-model comparisonRequest answers from multiple models simultaneously to compare their technical perspectives.
3AI image generationCreate visual assets directly through your coding environment using specific image models.

Written from the project's README. Every use case is checked against a quote from it.

How to install Polydev MCP

Formats verified 10 Nov 2026Add to Cursor Add to Goose

Claude CodeCursorVS CodeVS Code CLIClaude DesktopCodexCodex config.tomlGemini CLIGemini settings.json

$ claude mcp add polydev -- npx -y polydev-ai

~/.cursor/mcp.json

{
  "mcpServers": {
    "polydev": {
      "command": "npx",
      "args": [
        "-y",
        "polydev-ai"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "polydev": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "polydev-ai"
      ]
    }
  }
}

$ code --add-mcp '{"name":"polydev","type":"stdio","command":"npx","args":["-y","polydev-ai"]}'

claude_desktop_config.json

{
  "mcpServers": {
    "polydev": {
      "command": "npx",
      "args": [
        "-y",
        "polydev-ai"
      ]
    }
  }
}

$ codex mcp add polydev -- npx -y polydev-ai

~/.codex/config.toml

[mcp_servers.polydev]
command = "npx"
args = ["-y", "polydev-ai"]

$ gemini mcp add -s user polydev npx -- -y polydev-ai

~/.gemini/settings.json

{
  "mcpServers": {
    "polydev": {
      "command": "npx",
      "args": [
        "-y",
        "polydev-ai"
      ]
    }
  }
}

Set 1 environment variable before starting the server (below).Setup guides:Claude Code Cursor VS Code Claude Desktop

Configuration

POLYDEV_USER_TOKEN

Name	Description
POLYDEV_USER_TOKEN	—

Automated checks

Ran Nov 14, 2026Full report →

83/100

Not verified yet. A server needs a score of 80, no serious finding, and enough data for us to check. How checks work · What to fix for more points

Show this score in your README

Source repository linked and reachablepolydev-ai/polydev is public and reachablegithub.com/polydev-ai/polydev ↗Pass
Package names this repository as its sourcepolydev-ai names polydev-ai/polydev as sourcenpmjs.com/package/polydev-ai ↗Pass
Build provenance (Sigstore attestation)No build attestation published for this releaseNot checked
Open source license (OSI)Apache-2.0spdx.org/licenses/Apache-2.0.html ↗Pass
Commit or release in the last yearLast commit or release 2026-11-07github.com/polydev-ai/polydev ↗Pass
OpenSSF ScorecardNot checked
Package name not close to a popular packageNo popular package one edit away from polydev-aiPass
No critical advisory in the package or its dependenciesNot checked
No hidden instructions to the model0 tool descriptions and the README read; no override phrases, credential paths or hidden charactersPass
Destructive tools are labelledNot checked
Remote endpoint answers the MCP handshakeNot checked

README

View on GitHub

Polydev

What it is

Polydev is an MCP server: a tool your app calls. It doesn't replace your app's model.

Your app (its own model) -> Polydev ask_model -> GPT, Claude, Gemini, Grok... -> answer + what paid for it

Every answer ends with a "Paid by:" line, so you always know whether your ChatGPT plan, your own key or Polydev's free requests paid for it.

Tools:

Tool	What it does
`ask_model`	Send a prompt to one model (`model`), a list (`models`) or your default set, and get each answer with what paid for it. `get_perspectives` is the older name and still works
`list_models`	List the models you can reach and what pays for each
`search_x`	Search X (Twitter) with xAI's Grok (needs your own xAI key)
`rank_perspectives`	Record which answer helped most; rankings feed the public leaderboard
`generate_image`	Make an image with OpenAI or Google models, such as Nano Banana (local server only)
`connect_chatgpt_plan` / `chatgpt_plan_status`	Continue with ChatGPT so your ChatGPT plan pays for OpenAI models (local server only)
`login` / `get_auth_status`	Sign in to Polydev in the browser; show what's connected (local server only)

Add it without installing anything

Polydev is a hosted MCP server. Add this URL to your app and sign in once (OAuth):

https://polydev.ai/mcp

Claude (web, desktop, mobile): Settings → Connectors → Add custom connector, paste the URL, then Connect.
ChatGPT: add a custom MCP server in the apps settings, paste the URL, choose OAuth.
Claude Code: claude mcp add --transport http polydev https://polydev.ai/mcp, then /mcp to sign in.
Codex: codex mcp add polydev --url https://polydev.ai/mcp, then codex mcp login polydev.
Cursor, VS Code, Windsurf and others: one-click links and config at polydev.ai/install.

Install locally (npm)

You need Node.js 20 or newer and a free Polydev account.

Claude Code

claude mcp add polydev -- npx -y polydev-ai@latest

Codex

Add to ~/.codex/config.toml:

[mcp_servers.polydev]
command = "npx"
args = ["-y", "polydev-ai@latest"]
tool_timeout_sec = 300

Some models take a while to answer, so raise the tool timeout.

Cursor, Cline, Windsurf

Add to your client's MCP config (for Cursor, ~/.cursor/mcp.json):

{
  "mcpServers": {
    "polydev": {
      "command": "npx",
      "args": ["-y", "polydev-ai@latest"]
    }
  }
}

GitHub Copilot in VS Code

Add to .vscode/mcp.json:

{
  "servers": {
    "polydev": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "polydev-ai@latest"]
    }
  }
}

Zed and other MCP clients

Use the same command, npx -y polydev-ai@latest, as a stdio server in the client's MCP settings.

Sign in

Other ways:

From a terminal: npx -p polydev-ai polydev-login
Advanced, for machines without a browser: copy a token from polydev.ai/dashboard/mcp-tokens and set it in the server's environment:

"env": { "POLYDEV_USER_TOKEN": "pd_your_token_here" }

In sandboxes without a browser, pass the token to the login tool as user_token.

Continue with ChatGPT (local server)

To let your ChatGPT plan (Plus or Pro) pay for OpenAI models, ask your app to run connect_chatgpt_plan, or from a terminal:

npx polydev-ai chatgpt login     # also: chatgpt status | chatgpt models | chatgpt logout

Usage

Ask your agent in plain words:

Have GPT check this migration before I run it on prod.
Ask Gemini and Grok whether Redis or Postgres suits session storage here.
Make a 1200x630 cover for this post with Nano Banana.

Or call the tool directly:

{
  "tool": "ask_model",
  "arguments": {
    "model": "gpt-6.1-sol",
    "prompt": "Check this migration for anything that could lock the table: <sql>"
  }
}

Include the relevant code, errors and constraints in the prompt. The other model only sees what you send.

Cost: free

Polydev has no plans, tiers or credits, and it charges nothing. The tokens are paid by your own access:

Your ChatGPT plan (local server), through Continue with ChatGPT. See above.
Your local CLIs (local server). Polydev runs the Claude Code (claude -p) or Codex you're already signed in to, unmodified and under your own login, with your settings, hooks and MCP servers turned off for that call. Polydev never reads their credentials. These calls count against your own plan's limits. Polydev skips the CLI of the app that called it.
Your own API keys. Add keys for OpenAI, Anthropic, Google, xAI, OpenRouter, Cerebras and others at polydev.ai/dashboard/models. The provider bills you directly.
A one-time free allowance. Every account gets 10 requests on Polydev's keys, never more than $1 in total, served by each provider's newest low-cost model. search_x is not part of it.

Models come from a live catalogue that is updated nightly. See polydev.ai/docs for the current list.

Privacy

License

Apache-2.0.

Read full README

Polydev MCP questions

How do I add Polydev MCP to Claude Code?

Run claude mcp add polydev -- npx -y polydev-ai in your terminal. Add --scope user to make it available in every project.

How do I add Polydev MCP to Cursor?

Open ~/.cursor/mcp.json and add the server under mcpServers, using the Cursor config shown in the install section above.

How much does Polydev cost?

Polydev is free and does not have plans or tiers; costs are covered by your own API keys, your existing ChatGPT plan, or a small one-time free allowance.

Can I use my existing ChatGPT Plus plan with Polydev?

Yes, if you install the local server, you can use the 'connect_chatgpt_plan' tool to have your ChatGPT plan pay for OpenAI models.

Is my data used for training?

No, prompts from connected apps are used only to answer you and are never used for training or sold.

Facts

Nov 15, 2026

Stars: 2
Downloads, 30 days: —
Latest version: —
Last commit: Nov 7, 2026
License: Apache-2.0
Transport: stdio
Package: polydev-ai

polydev-ai ↗

Community publisher

Published by an independent maintainer.

Alternatives

Works with

Claude Code Cursor VS Code Claude Desktop Codex Gemini CLI Windsurf Devin

Badge for your README

Show your HostedMCP checks score. The badge links readers to install instructions for every client.

[![HostedMCP checks](https://api.hostedmcp.org/v1/badge/server/polydev-ai/polydev.svg)](https://hostedmcp.org/servers/polydev-ai/polydev/checks)

Maintainer?

Claim this listing to edit it and add the HostedMCP badge to your README.

Claim listing

Before you install

Servers run with the permissions you give them. Use the narrowest token or database role that does the job.

Polydev MCP server

What is Polydev MCP?

About Polydev MCP server

What you can do with it

How to install Polydev MCP

Install Polydev MCP in Claude Code

Install Polydev MCP in Cursor

Install Polydev MCP in VS Code

Install Polydev MCP in VS Code CLI

Install Polydev MCP in Claude Desktop

Install Polydev MCP in Codex

Install Polydev MCP in Codex config.toml

Install Polydev MCP in Gemini CLI

Install Polydev MCP in Gemini settings.json

Configuration

Automated checks

README

Polydev

What it is

Add it without installing anything

Install locally (npm)

Claude Code

Codex

Cursor, Cline, Windsurf

GitHub Copilot in VS Code

Zed and other MCP clients

Sign in

Continue with ChatGPT (local server)

Usage

Cost: free

Privacy

Links

License

Polydev MCP questions

Polydev MCP server

What is Polydev MCP?

About Polydev MCP server

What you can do with it

How to install Polydev MCP

Install Polydev MCP in Claude Code

Install Polydev MCP in Cursor

Install Polydev MCP in VS Code

Install Polydev MCP in VS Code CLI

Install Polydev MCP in Claude Desktop

Install Polydev MCP in Codex

Install Polydev MCP in Codex config.toml

Install Polydev MCP in Gemini CLI

Install Polydev MCP in Gemini settings.json

Configuration

Automated checks

README

Polydev

What it is

Add it without installing anything

Install locally (npm)

Claude Code

Codex

Cursor, Cline, Windsurf

GitHub Copilot in VS Code

Zed and other MCP clients

Sign in

Continue with ChatGPT (local server)

Usage

Cost: free

Privacy

Links

License

Polydev MCP questions