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Nutshell MCP server

114 operations0 webhooks

CRM integration for accounts, contacts, leads, activities, tasks, products, quotes, and invoices.

Use Nutshell in Claude, ChatGPT, Cursor or another MCP client

Connect Nutshell once in Corsair, then add one MCP address to your agent.

Connect Nutshell
Setup steps for Claude, ChatGPT, Cursor and Claude Code

Building your own app on the Corsair SDK? Get API keys

Try Nutshell with your agent

Connect Nutshell, then paste this into Claude, ChatGPT or Cursor. For ideas from other apps, see the use cases.

Using Corsair, show me what you can do in Nutshell on my account, then run one read-only example and show me the result.

Runs once, when you ask

Nutshell tools and triggers

Tools are what your agent can do in Nutshell through Corsair's MCP server. Triggers are the Nutshell events a routine can start from.

Leads

  • CreateWrite

    Create a lead

    leads.create

  • Create Custom FieldWrite

    Create a custom field

    leads.createCustomField

  • Custom Field AttributesRead-only

    Get applicable custom fields for leads

    leads.customFieldAttributes

  • CustomfieldsRead-only

    Get a lead's custom fields

    leads.customfields

  • DeleteDestructive

    Delete a lead

    leads.delete

  • GetRead-only

    Get a lead

    leads.get

  • InstallmentsRead-only

    Get installments for a lead

    leads.installments

  • ListRead-only

    Get a list of leads

    leads.list

  • List FieldsRead-only

    Get the fields for a lead

    leads.listFields

  • List ItemsRead-only

    Get list items for all leads

    leads.listItems

  • Post StagesetWrite

    Set the pipeline for a lead

    leads.postStageset

  • ReopenWrite

    Reopen a lead

    leads.reopen

Connect Nutshell to Claude, ChatGPT or Cursor

  1. 1

    Connect Nutshell in Corsair

    Add your Nutshell API key once in Corsair. Corsair stores the credential encrypted and makes the Nutshell API calls for your agent, so it never goes into a prompt or a config file. Connect Nutshell

    If your link lets the agent add apps, you can skip this: it gives you a sign-in link the first time it needs Nutshell. On a ChatGPT personal plan, connect Nutshell here first.

  2. 2

    Add Corsair's MCP server to your agent

    Every client uses the same address:

    https://mcp.corsair.dev/mcp
    Open Customize → Connectors → Add custom connector, paste the address, then select Connect.

    Codex, Gemini CLI, VS Code, Zed and other clients with OAuth sign-in work the same way. Clients without it, such as GitHub Copilot's coding agent, use a link's own address and an API key. Setup for every client

  3. 3

    Sign in and choose what needs your approval

    Your client opens Corsair to sign in. Pick a link: the apps your agent can use and a mode that decides what it may do without asking. In the default Cautious mode, Nutshell's read and write operations run right away and its 11 destructive operations wait for your approval. Strict mode asks before every write and refuses destructive operations, and Read mode allows reads only.

FAQ

Install corsair and @corsair-dev/nutshell, add the Nutshell plugin, and connect with an API key. Then call methods like corsair.nutshell.api.accounts.create() from your app. Corsair keeps each tenant isolated.

Yes. Nutshell requires an API key from your Nutshell account or developer dashboard. Create credentials with access that matches what you automate, then paste them into Corsair or connect through managed auth in Hub.

Yes. One Corsair client can hit Nutshell, GitHub, Notion, Stripe, and the rest. Trigger Nutshell from a webhook, push updates to Slack, or chain actions across plugins. Same tenant context across integrations, plain TypeScript.

Teams use Corsair for CRM integration for accounts, contacts, leads, activities, tasks, products, quotes, and invoices. Common builds include sync jobs, admin tooling, and agents that call Nutshell APIs from your backend.

The SDK is open source. Self-host and you pay Corsair nothing for the integration layer. Hub bills for hosted auth and execution, not per Nutshell API call. Hub has a generous free tier. For hobby projects you can probably run the whole thing on free. Paid plans start to matter with more tenants or heavier traffic.

We maintain @corsair-dev/nutshell in the open repo. When Nutshell ships API changes, upgrade the package. Your call sites stay typed. You should not need to rewrite the integration layer each time.

No. Corsair does not read your Nutshell data or hold individual access credentials. Credentials stay in your database. API calls run on your instance. We do not store Nutshell data on your behalf.

Yes. Add https://mcp.corsair.dev/mcp as a custom connector or MCP server in Claude, ChatGPT, Cursor, VS Code, Claude Code, Codex or any client that supports remote MCP servers with OAuth sign-in, then sign in to Corsair. On ChatGPT personal plans, custom servers currently get read tools only.

Yes. Put Nutshell on a link in Strict mode and every write waits for your approval, while destructive actions are refused. The default Cautious mode asks only before the 11 destructive Nutshell operations. You can change a link's mode at hub.corsair.dev/me.