What can you do with otterkit?

OtterKit Agent Skills

Skills that teach AI coding agents (Claude Code, Cursor, Copilot — anything that reads the Agent Skills format) to drive OtterKit: tunnels and serverless webhook endpoints with capture, signature verification, and replay.

Skill	What the agent learns
`otterkit`	Core: tunnels, webhook endpoints, capture, inspect, replay, daemons, pricing
`stripe-webhooks`	Stripe: signed synthetic events, `Stripe-Signature` verification, re-signed replay
`github-webhooks`	GitHub Apps: persistent capture endpoint, `X-Hub-Signature-256` verification, replay
`shopify-webhooks`	Shopify: stable `--tunnel-url` for the CLI, HMAC verification, standby endpoints
`slack-webhooks`	Slack: Events API via capture tunnel, signing-secret verification, re-signed replay

Install (Claude Code)

Copy any skill directory into .claude/skills/ in your project (or ~/.claude/skills/ for all projects):

git clone https://github.com/useotterkit/skill && cp -r skill/stripe-webhooks .claude/skills/

Or add the OtterKit MCP server, which exposes the same capabilities as tools:

claude mcp add otterkit -- npx otterkit mcp

What's different from a plain tunnel

Every skill leans on three things ngrok-class tools don't do:

otterkit send — synthetic provider events signed with real signature headers (stripe:payment_intent.succeeded, github:pull_request.opened, …) against a local handler, free, no provider account interaction.
otterkit verify — check captured deliveries against a signing secret, per request, with the failure reason.
otterkit replay --resign — re-deliver a captured event to local code, re-signed with a current timestamp so timestamp-tolerant handlers (Stripe, Slack) still accept it.

Skills are generated from the CLI's actual implementation and updated alongside it.

Install

Add otterkit to your client. Pick the one you use.

claude mcp add otterkit -- npx -y otterkit

codex mcp add otterkit -- npx -y otterkit

amp mcp add otterkit -- npx -y otterkit

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

Add to `claude_desktop_config.json`, then restart Claude Desktop.

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

Add to `~/.cursor/mcp.json`, or `.cursor/mcp.json` for a single project.

code --add-mcp '{"name":"otterkit","command":"npx","args":["-y","otterkit"]}'

Or add the block manually to `.vscode/mcp.json` under `servers`.

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

Add to `~/.codeium/windsurf/mcp_config.json`.

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

Add to `cline_mcp_settings.json` via the MCP Servers panel.

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

Add to `~/.gemini/settings.json`.

{
  "mcpServers": {
    "otterkit": {
      "type": "local",
      "command": "npx",
      "args": [
        "-y",
        "otterkit"
      ],
      "tools": [
        "*"
      ]
    }
  }
}

Add to `~/.copilot/mcp-config.json`, or run `/mcp add` inside the CLI.

{
  "context_servers": {
    "otterkit": {
      "command": {
        "path": "npx",
        "args": [
          "-y",
          "otterkit"
        ]
      }
    }
  }
}

Add to your Zed `settings.json`.

npx -y otterkit

Run `goose configure`, choose **Add Extension → Command-line Extension**, and paste this command.

Score

39 / 100

Incomplete

Documentation13/25
Maintenance19/25
Trust9/20
Capability0/15
Install experience12/15

Documents what it does and how to connect
Has a resolvable package or endpoint
Exposes at least one tool, prompt or resource
README has substantive content
Includes a code example
Documents its configuration
Mentions credentials or security posture
Last commit 19 days ago
Has a release history
Repository is not archived
No licence detected
Namespace verified in the official MCP registry
Claimed by its owner
Published under an organisation
0 tool(s) documented
Provides prompt templates
Provides resources
12 documented install method(s)
Published to a package registry
Offers a hosted endpoint — no local install

Read the full rubric →

Version history

Versions	Published
0.12.2Latest	Jul 21, 2026