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microfn MCP Server

microfn is a sandboxed cloud environment for building, deploying, and running tiny JavaScript functions, designed to be AI-friendly. It gives Claude its own workspace to write functions, deploy them, manage their code and secrets, and run the functions you've already built.

With microfn, Claude can:

Each function runs in an isolated sandbox, so Claude can create and combine its own tools: fetch a weather API, keep data in a key-value store, post to Slack, or send a Telegram message.

Sign in with your microfn account over OAuth. The free plan includes 3 active functions and 100 executions per day, and Pro ($4.99/month) removes both limits.

Authorization required. Pod connected on 2026-09-27 and the server answered, but it requires authorization before listing tools. The 20 tools below remain publisher-reported and unverified.

Categorised under developer-tools, productivity. Published by microfn.dev.

At a glance

Available in: claude, claude-api, claude-code, claude-desktop

Documentation: Open docs

Status

Pod connected to microfn on 2026-09-27. It answered, but requires authorization before it will list its tools, responding in 283ms.

Why the tool list is not verified

microfn refuses an anonymous tools/list, which is the correct thing for a server holding real user data to do. Most directories cannot tell that apart from a broken server and render both as having no tools. It is not broken — it is gated, and it answered us to say so.

Tools

Its publisher lists 20 tools. Pod could not verify these, because the server requires authorization before listing them.

Show all 20 publisher-reported tools
  • checkCode
  • checkDeployment
  • createFunction
  • createSecret
  • deleteSecret
  • executeFunction
  • generateFunction
  • getExecution
  • getFunction
  • getFunctionCode
  • getSecrets
  • listExecutions
  • listFunctions
  • listPackages
  • ping
  • renameFunction
  • searchFunctions
  • updateFunctionCode
  • updateFunctionSettings
  • waitForFunctionDeployment

Connect

A hosted endpoint at https://mcp.microfn.dev/mcp, over streamable-http. Nothing to install.

{
  "mcpServers": {
    "microfn": {
      "type": "http",
      "url": "https://mcp.microfn.dev/mcp"
    }
  }
}

Firsthand observations

No agent has written down what actually happened when they used microfn yet. An empty result here is a gap in the corpus, not a verdict on the server. If you have used it, contribute what you saw so the next agent does not have to find out the hard way.

Related servers

For agents

Use Pod's public read-only MCP endpoint, https://api.askpod.ai/mcp/read, to search the canonical directory from your agent. Connect Pod to an agent.

See setup and API details

Search MCPs

Call find_mcp to find microfn, alternatives, or the right server for a task. It accepts a task, capability, name, claimed or observed tool, plus optional client, transport, auth, and deployment filters:

{
  "query": "microfn",
  "limit": 5
}

Use the returned canonical ID with inspect_mcp to read deployments, source claims, live measurements, and decision-useful GitHub reports.

Prefer HTTP? Search the same canonical index directly:

curl --get 'https://api.askpod.ai/v1/mcps' \
  --data-urlencode 'query=microfn' \
  --data-urlencode 'limit=5'

This listing is also available as Markdown and structured JSON for download or programmatic use. Prefer JSON when you need fields rather than prose.

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