Bubble Lab MCP Server

What the MCP server does

Bubble Lab’s MCP server exposes 32 platform tools across flow management, credentials, bubbles, capabilities, the Pearl agent, Slack bot building, and tracing. Through these tools your AI client can build and run workflows that touch 49+ apps — Slack, Salesforce, Google Calendar, Gmail, Notion, HubSpot, Jira, Linear, and more.

Example: what you can ask Claude Desktop

• “Create a flow that, when a new Google Calendar event starts, looks up attendees in Salesforce and posts a prep document to #sales-prep in Slack.”
• “Every Monday at 9am, summarize last week’s closed deals from HubSpot and post the digest to Slack.”
• “When a new GitHub issue is labelled p0, create a Linear ticket and @mention the on-call engineer in Slack.”

Setup

Last updated: May 2026

{
  "mcpServers": {
    "bubblelab-cloud": {
      "type": "http",
      "url": "https://api.bubblelab.ai/mcp",
      "headers": {
        "Authorization": "Bearer bl_mcp_<your_key_here>"
      }
    }
  }
}

claude mcp add --transport http bubblelab-cloud https://api.bubblelab.ai/mcp \
  --header "Authorization: Bearer bl_mcp_<your_key_here>"

{
  "mcpServers": {
    "bubblelab-cloud": {
      "url": "https://api.bubblelab.ai/mcp",
      "headers": {
        "Authorization": "Bearer bl_mcp_<your_key_here>"
      }
    }
  }
}

Troubleshooting

401 Unauthorized

Confirm the header reads Authorization: Bearer bl_mcp_... and the key wasn’t truncated on paste. Also check the key’s access level covers the tool you’re calling.

Tools don’t appear in the client

Fully quit the client and relaunch — Claude Desktop and Cursor only read MCP config at startup.

Wrong endpoint URL

Use https://api.bubblelab.ai/mcp. The server speaks Streamable HTTP, not stdio.

Apps Bubble Lab automates

Your AI client can read from and write to any of these via Bubble Lab flows. Full details on the integrations page.

• Airtable
• Anthropic Claude
• Apify
• Asana
• Ashby
• Assembled
• Attio
• Browserbase
• Clerk
• Cloudflare
• Confluence
• CrustData
• Discord
• Docusign
• ElevenLabs
• Firecrawl
• Follow Up Boss
• FullEnrich
• GitHub
• Gmail
• Google Calendar
• Google Drive
• Google Gemini
• Google Sheets
• Granola
• HTTP
• HubSpot
• InsForge
• Jira
• Linear
• Metabase
• Notion
• OpenAI
• OpenRouter
• PostgreSQL
• PostHog
• Ramp
• Resend
• S3 Storage
• Salesforce
• SendSafely
• Slab
• Slack
• Snowflake
• Sortly
• Stripe
• Telegram
• Xero
• Zendesk

FAQ

How long does setup take?

Under 2 minutes once you have a Bubble Lab account — generate a key, paste one JSON block, restart your client.

What is the Bubble Lab MCP endpoint URL?

https://api.bubblelab.ai/mcp — Streamable HTTP transport. Authenticate with Authorization: Bearer bl_mcp_<your_key>.

Do I need a paid plan to use MCP?

No. MCP access is available on the free Starter plan. Paid plans raise execution limits and active-flow counts.

Which clients are supported?

Claude Desktop, Claude Code (CLI), and Cursor are supported out of the box. Any client that speaks Streamable HTTP MCP with bearer-token auth works.

Which apps can my AI client automate via Bubble Lab?

Slack, Salesforce, Google Calendar, Gmail, Google Sheets, Notion, HubSpot, Jira, Linear, GitHub, Airtable, Stripe, Zendesk, PostgreSQL, Snowflake, and 40+ more. Full list: https://bubblelab.ai/integrations

How do triggers work?

Flows run on demand (invoked by your AI client) or on a cron schedule configured in Bubble Studio.

What do the access levels (read / write / execute) mean?

"read" allows listing and inspecting flows, credentials, executions, and traces. "write" adds creating, editing, activating, and deleting flows, plus managing credentials and creating Pearl sessions / Slack bots. "execute" adds running flows, invoking capability tools, sending Pearl messages, and triggering agent flows. Pick the narrowest scope the client needs.

Is my data safe?

Your API key is hashed at rest. You can revoke any key from Settings → MCP Integrations. Set the access level to "read" if you only want read-only tool calls.

I see a 401 error. What now?

Double-check the key was pasted with the bl_mcp_ prefix, and confirm your access level is sufficient (e.g., "read" cannot run flows).

The tools don’t show up in my client.

Fully quit and restart the client — Claude Desktop and Cursor only load MCP servers at startup.