GrowSurf MCP Server

The official GrowSurf command-line interface (CLI) and open-source Model Context Protocol (MCP) server for implementing GrowSurf referral and affiliate programs with guided steps and safe REST API wrappers.

Connect it to an AI agent and, in plain language, the agent can create a referral or affiliate program, configure rewards, install tracking, add and manage participants, and read analytics, all backed by the GrowSurf REST API.

• Learn more about GrowSurf at https://growsurf.com

• Learn more about this MCP server at https://docs.growsurf.com/build-with-ai

Who is this for

This MCP server is for:

• Developers using MCP-compatible tools (Claude Code, Codex, Cursor, Copilot, and other MCP clients)

• Teams that want guided, AI-assisted GrowSurf integrations

This MCP server is NOT for:

• Browser-only users who want a local stdio install. ChatGPT web, Claude.ai, and Claude Desktop do not run a local MCP server, but all three connect to GrowSurf through the hosted remote connector at https://mcp.growsurf.com. See the full client list and setup at https://docs.growsurf.com/build-with-ai#mcp.

Related MCP server: SurfRank MCP Server

What you get

• Guided Integration:

  • Universal Code install

  • Native iOS/Android SDK implementation guidance

  • Native GrowSurf Window guidance

  • Signup flow

  • Qualifying action flow

  • Affiliate sale / transaction tracking

  • Webhooks

• Agent Recipes:

  • MCP prompts for creating referral programs, creating affiliate programs, embedding the widget, listing and fetching programs and participants, configuring rewards, wiring webhooks, and reading analytics

  • Installable Agent Skill bundle at skills/growsurf-agent-toolkit

  • Steering to review starter Design, Emails, Options, Installation, rewards, and GrowSurf Window content before patching

  • One-shot program-creation eval prompts and acceptance checks for starter content and configuration review

• Happy‑Path REST API Wrappers:

  • Create an account and get an API key with no existing credentials

  • Read and rename the bound team, request team verification, and resend the team owner's verification email

  • List and get campaigns

  • Get campaign analytics (totals, optional per-period time series, email metrics, previous-period totals, status counts, and rates)

  • Create, update, and clone programs (campaigns)

  • List, create, update, and delete campaign rewards

  • Get/update Design, Emails, Options, and Installation config

  • Capture temporary GrowSurf preview screenshots when the user explicitly asks for visual proof

  • List, create, update, delete, and test program webhooks

  • List, get, and add participants

  • Update a participant, email a participant, and get a participant's analytics and activity logs

  • Trigger referral credit (for referral programs), with optional delayed award (1-90 days)

  • Cancel a pending delayed referral trigger (for referral programs)

  • Record affiliate sale/transaction (for affiliate programs)

  • Create mobile participant tokens for signed-in native app users

• Official API Library Snippets:

  • TypeScript

  • Python

  • PHP

  • Ruby

  • Java

• Helpers:

  • Compute participant auto-auth HMAC hash

  • Normalize webhook payloads

  • Generate best‑effort idempotency keys for webhook deduplication

Requirements

• Node.js 22+

• A GrowSurf account for hosted OAuth

• A GrowSurf API key for local stdio setup or manual API-key remote setup. A scoped key works as long as it has access to the tools and programs you want the agent to use.

• A campaign (program) ID for campaign-scoped tools. Set GROWSURF_CAMPAIGN_ID as the default, pass a campaignId argument to target a specific program, or call growsurf_list_campaigns to find available programs. For a newly created program, pass the id returned by growsurf_create_campaign to the other tools.

• Static guidance/snippet tools can run without credentials

• Exception: growsurf_create_account needs no API key. It creates a new account and returns an API key. Team-level tools do not need a campaign ID.

• Every listed tool publishes standard MCP read-only, destructive, idempotent, and open-world safety hints. Scoped business actions stay available; API-key rotation is intentionally not an MCP tool. Rotate keys in GrowSurf Settings or through a direct REST/SDK client.

Official CLI

The npm package installs the growsurf-mcp command. Run it without a global install:

npx -y @growsurfteam/growsurf-mcp

The CLI starts GrowSurf's local stdio MCP server. Set GROWSURF_API_KEY for API-backed actions and GROWSURF_CAMPAIGN_ID for a default program. Public developer resources and static integration guidance work without credentials.

Inspect the installed command without starting the stdio server:

npx -y @growsurfteam/growsurf-mcp --help
npx -y @growsurfteam/growsurf-mcp --version

Supported MCP Hosts

The recommended path is GrowSurf's hosted OAuth endpoint at https://mcp.growsurf.com when your host supports remote Streamable HTTP with OAuth. Use the local npx server when your host needs a stdio process or manual API-key setup. No GrowSurf account yet? An agent can connect to the hosted onboarding endpoint https://mcp.growsurf.com/onboard with no credentials and call growsurf_create_account to sign up.

The GrowSurf MCP server works with any MCP-compatible host. The examples below cover a few config-based and CLI hosts. For the complete, current list of supported clients (including ChatGPT web, Claude.ai, Claude Desktop, GitHub Copilot, Gemini CLI, Devin Desktop, and Cline) with step-by-step setup, see https://docs.growsurf.com/build-with-ai#mcp.

• Cursor

• Claude Code (CLI-based)

• Antigravity

• Codex (CLI-based)

Cursor

1. Open or create Cursor's global MCP configuration at ~/.cursor/mcp.json.

2. Add a server named growsurf with the hosted OAuth endpoint:

{
  "mcpServers": {
    "growsurf": {
      "type": "http",
      "url": "https://mcp.growsurf.com"
    }
  }
}

For local stdio instead, use:

{
  "mcpServers": {
    "growsurf": {
      "command": "npx",
      "args": ["-y", "@growsurfteam/growsurf-mcp"],
      "env": {
        "GROWSURF_API_KEY": "YOUR_API_KEY",
        "GROWSURF_CAMPAIGN_ID": "YOUR_CAMPAIGN_ID"
      }
    }
  }
}

Claude Code (CLI-based)

Open your terminal and connect Claude Code to the hosted OAuth endpoint:

claude mcp add --transport http --scope user growsurf https://mcp.growsurf.com
claude mcp login growsurf

For local stdio instead, install the server directly into Claude Code:

claude mcp add growsurf \
  -e GROWSURF_API_KEY=your_api_key \
  -e GROWSURF_CAMPAIGN_ID=your_campaign_id \
  -- npx -y @growsurfteam/growsurf-mcp

Antigravity

1. Open Antigravity.

2. Click the … menu in the panel to the right and select MCP Servers.

3. Click Manage MCP Servers > View raw config.

4. Recommended: in the mcp_config.json file, add the hosted OAuth endpoint:

{
  "mcpServers": {
    "growsurf": {
      "serverUrl": "https://mcp.growsurf.com"
    }
  }
}

5. Save the config, open Settings > Customizations, and select Authenticate for GrowSurf.

For local stdio instead, use:

{
  "mcpServers": {
    "growsurf": {
      "command": "npx",
      "args": ["-y", "@growsurfteam/growsurf-mcp"],
      "env": {
        "GROWSURF_API_KEY": "YOUR_API_KEY",
        "GROWSURF_CAMPAIGN_ID": "YOUR_CAMPAIGN_ID"
      }
    }
  }
}

Codex

Recommended: connect Codex to the hosted OAuth endpoint:

codex mcp add growsurf --url https://mcp.growsurf.com
codex mcp login growsurf

Or create or edit ~/.codex/config.toml:

[mcp_servers.growsurf]
url = "https://mcp.growsurf.com"

For local stdio instead, add the following:

[mcp_servers.growsurf]
command = "npx"
args = ["-y", "@growsurfteam/growsurf-mcp"]

[mcp_servers.growsurf.env]
GROWSURF_API_KEY = "YOUR_API_KEY"
GROWSURF_CAMPAIGN_ID = "YOUR_CAMPAIGN_ID"

Or configure local stdio from the CLI:

codex mcp add growsurf \
  --env GROWSURF_API_KEY=YOUR_API_KEY \
  --env GROWSURF_CAMPAIGN_ID=YOUR_CAMPAIGN_ID \
  -- npx -y @growsurfteam/growsurf-mcp

Configuration

Set the following environment variables when running the MCP server:

• GROWSURF_API_KEY (optional for startup; required for API-calling tools. Use a key with the scopes and program access those tools need)

• GROWSURF_CAMPAIGN_ID (optional; the default program for campaign-scoped tools. A tool's campaignId argument overrides it, so a single server can operate on any of your programs)

• GROWSURF_API_BASE_URL (optional; defaults to https://api.growsurf.com/v2. Useful for local or hosted MCP gateways that should call a different GrowSurf API origin)

• GROWSURF_PARTICIPANT_AUTH_SECRET (optional; used by the hash helper)

• GROWSURF_WEBHOOK_TOKEN (optional; used for your own webhook URL token scheme)

Run with npx

After publishing this package, customers can run:

npx @growsurfteam/growsurf-mcp

For local development in this repo:

npm install
npm run build
node dist/cli.js

MCP tools

Every tool declares an MCP output schema and returns structuredContent, so hosts know each tool's result shape. REST tools return the API response (plus a JSON text block for older clients); the guidance and snippet tools return their markdown document under markdown.

Guided Integration

• growsurf_integration_guide Step-by-step guidance for implementing a GrowSurf referral or affiliate program.

• growsurf_mobile_sdk_guide Native iOS/Android SDK guidance for attribution, shareUrl, trackShare, and the native GrowSurf Window.

• growsurf_api_library_snippets Official REST API library snippets for TypeScript, Python, PHP, Ruby, and Java.

• growsurf_get_integration_connect_link Get a dashboard link that opens a specific integration's connect panel (Stripe, PayPal, Tango Card, Mailchimp, and many more). Hand it to the user when they want to connect one. Connecting happens in the dashboard, not through the API.

Client & UI Snippets

• growsurf_client_snippets JavaScript SDK, GrowSurf Window, and embeddable examples. Includes a reminder to use a frontend design workflow when placing or styling embeddable UI.

• growsurf_embeddable_element_snippet HTML snippet for a specific GrowSurf embeddable element.

• growsurf_grsf_config_snippet <head> snippet for configuring window.grsfConfig and participant auto-auth.

Account onboarding

• growsurf_create_account Create a GrowSurf account and get an API key. This is the only tool that does not require GROWSURF_API_KEY. The returned key is shown once and locked (403 EMAIL_NOT_VERIFIED_ERROR) until the owner verifies their email. The key is rotated on the owner's first dashboard sign-in. Creating an account agrees, on the account holder's behalf, to GrowSurf's Terms of Service and Privacy Policy.

Team

• growsurf_get_team Fetch the team bound to the API key or OAuth connection, including its GrowSurf verification state.

• growsurf_update_team Update the bound team's display name.

• growsurf_request_team_verification Ask GrowSurf to verify the bound team, which is required before a program can email participants.

• growsurf_resend_team_owner_verification_email Resend the verification email to the bound team's owner without revealing their email address.

API & Tracking

• growsurf_get_campaign Fetch campaign configuration.

• growsurf_list_campaigns List programs available to the credential. Use this to find a campaignId before calling campaign-scoped tools.

• growsurf_get_campaign_analytics Fetch program analytics, with optional per-period series, comparison, status, rate, and email delivery and engagement data via include=email.

• growsurf_create_campaign Create a new program (campaign) with type-appropriate starter content and optional inline rewards (only needs GROWSURF_API_KEY, not GROWSURF_CAMPAIGN_ID). Review the seeded Design, Emails, Options, Installation, rewards, and GrowSurf Window content before patching.

• growsurf_agent_program_creation_eval Generate one-shot program-creation eval prompts and acceptance checks for starter content, conservative rewards, configuration review, frontend install proof, and clean public copy.

• growsurf_update_campaign Update the program's identity and lifecycle: name, company branding, and status (only the fields you send are changed).

• growsurf_clone_campaign Clone the program into a new DRAFT program (integrations and credentials are not copied).

• growsurf_list_campaign_rewards List the program's configured rewards.

• growsurf_create_campaign_reward Create a campaign reward.

• growsurf_update_campaign_reward Update a campaign reward by its reward key.

• growsurf_delete_campaign_reward Delete a campaign reward by its reward key.

• growsurf_get_campaign_design / growsurf_update_campaign_design Read or patch design configuration, including the Program Editor Design tab and payout-destination confirmation page copy.

• growsurf_get_campaign_emails / growsurf_update_campaign_emails Read or patch the Program Editor Emails tab config.

• growsurf_get_campaign_options / growsurf_update_campaign_options Read or patch the Program Editor Options tab config.

• growsurf_get_campaign_installation / growsurf_update_campaign_installation Read or patch the Program Editor Installation tab config.

• growsurf_capture_referral_flow_screenshots Capture temporary GrowSurf preview screenshots for the current program after the user explicitly asks for visual proof. This returns the controlled referrer Window and referred-friend experience; use browser automation instead to prove the user's installed site.

• growsurf_list_campaign_webhooks List the program's webhooks (secrets are never returned).

• growsurf_create_campaign_webhook Add a webhook to the program (with events and a write-only signing secret).

• growsurf_update_campaign_webhook Update a webhook by id (primary for the program's primary webhook).

• growsurf_delete_campaign_webhook Remove a webhook by id.

• growsurf_test_campaign_webhook Send a live test event to a webhook using its stored URL and secret.

• growsurf_add_participant Add a participant (or referred participant) during signup.

• growsurf_list_participants List participants in the current program, paginated by nextId. Use this to find a participant ID before calling participant-scoped tools.

• growsurf_get_participant Fetch one participant by GrowSurf participant ID or email address.

• growsurf_update_participant Update a participant by ID or email (including internal notes).

• growsurf_bulk_delete_participants Permanently delete up to 200 participants (by ID and/or email, mixed lists allowed) in one request, with per-row DELETED/NOT_FOUND/DUPLICATE/ERROR results. Irreversible — removes the participants' referrals, rewards, commissions, and payout records.

• growsurf_email_participant Email a participant using a configured template or a free-form subject/body.

• growsurf_get_participant_analytics Fetch one participant's engagement, rank, share, affiliate revenue, commission, payout, and optional email metrics. Use include=series, include=email, or both comma-separated.

• growsurf_get_participant_activity_logs List a participant's activity logs (offset/limit paginated).

• growsurf_trigger_referral Trigger referral (for referral programs only). Optionally pass delayInDays (1-90) to hold the credit for N days before awarding it (e.g. to cover a refund window).

• growsurf_cancel_delayed_referral Cancel a pending delayed referral trigger before the delay elapses (e.g. on refund/cancellation).

• growsurf_get_participant_payout_destination Get a participant's payout-destination status across every provider enabled for the program (PayPal and/or Wise): per-provider status, confirmed payout email, legal recipient type, and repair reason.

• growsurf_request_participant_payout_destination_confirmation Ask a participant to confirm their payout destination for a provider — sends them a one-time confirmation link (only the participant can confirm).

• growsurf_record_sale Record affiliate sales or transactions (for affiliate programs only).

• growsurf_refund_transaction Record an amendment (refund, partial refund, or chargeback) against a recorded transaction; reverses or adjusts the referrer's commission (for affiliate programs only). The inverse of growsurf_record_sale.

• growsurf_create_mobile_participant_token Create or fetch a participant, then create a participant-scoped mobile SDK token for a signed-in mobile user.

Helpers

• growsurf_participant_auth_hash Generate participant auto-auth HMAC hashes (to authenicate participants automatically).

• growsurf_webhook_normalize Normalize webhook payloads and generate idempotency keys (to deduplicate webhook deliveries).

Webhooks

GrowSurf webhooks notify your server when important referral or affiliate events occur, such as when new objects like participants, referrals, rewards, or transactions are created. Here are common use-cases:

• Fulfill rewards automatically

• Maintain internal points or credit systems

• Sync participant and referral data into your database

Duplicate Delivery Handling

Webhook handlers should be idempotent because the same event can arrive more than once. Store an idempotency key before changing anything in your system.

Webhook Security & Idempotency

GrowSurf signs webhook deliveries when the webhook has a secret configured: each delivery includes a GrowSurf-Signature HMAC header computed with that secret (the secret is write-only and never returned). To securely use webhooks, we recommend the following:

• Set a secret on the webhook and verify the GrowSurf-Signature header on receipt

• Validate the payload shape and expected event type

• Deduplicate webhook events using an idempotency key, because the same event can arrive more than once

The GrowSurf MCP server provides a helper tool (growsurf_webhook_normalize ) that normalizes webhook payloads and generates a best-effort idempotency key to simplify safe webhook processing.

Development and Testing

npm run dev
npm test

Additional Resources

Read developer docs at the following:

• JavaScript SDK reference: https://docs.growsurf.com/developer-tools/javascript-sdk/api-reference

• REST API reference: https://docs.growsurf.com/developer-tools/rest-api/api-reference

• REST API libraries: https://docs.growsurf.com/developer-tools/rest-api/api-libraries

• Native mobile guide: https://docs.growsurf.com/getting-started-for-native-mobile

• iOS SDK: https://docs.growsurf.com/developer-tools/ios-sdk

• Android SDK: https://docs.growsurf.com/developer-tools/android-sdk

• Getting Started with GrowSurf: https://docs.growsurf.com/getting-started

The GrowSurf MCP server helps GrowSurf customers implement referral programs and affiliate programs quickly.