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io.github.blipemail/email

MCP server for Blip disposable email — create inboxes, receive emails, extract OTP codes

Developer ToolsKotlinv0.1.3

blip

Instant disposable email inboxes. API, CLI, MCP server, and web app.

useblip.email | Docs | API Reference

useblip/email MCP server

Features

  • Disposable email addresses with random or custom slugs
  • Real-time email delivery via SSE
  • OTP and verification link extraction
  • Webhooks with HMAC-SHA256 signatures and delivery logs
  • CLI for terminal workflows
  • MCP server for AI agents
  • Multi-domain support

Architecture

blip/
  server/core/      Kotlin/Ktor API server (AGPL-3.0)
  cli/              Kotlin/Clikt CLI
  mcp-server/       TypeScript MCP server (npm: @useblip/email)
  shared-models/    Shared Kotlin data models

Quickstart

Managed (useblip.email)

No setup required. Create inboxes at app.useblip.email or via the API:

# Get a session token
curl -X POST https://api.useblip.email/v1/sessions

# Create an inbox
curl -X POST https://api.useblip.email/v1/inboxes \
  -H "Authorization: Bearer <token>"

CLI

brew install bmcreations/tap/blip

blip create
blip inbox --watch

Self-hosted

Prerequisites: JDK 21+, libSQL (sqld)

git clone https://github.com/blipemail/blip.git
cd blip
./gradlew :server:core:buildFatJar

# Start libSQL
sqld --http-listen-addr 127.0.0.1:8081 &

# Run the server
TURSO_URL=http://localhost:8081 WORKER_SECRET=dev-secret \
  java -jar server/core/build/libs/*-all.jar

Or with Docker:

docker build -t blip .
docker run -p 8080:8080 \
  -e TURSO_URL=http://host.docker.internal:8081 \
  -e WORKER_SECRET=your-secret \
  blip

Environment variables

VariableRequiredDefaultDescription
PORTNo8080Server port
TURSO_URLYeshttp://localhost:8081libSQL/Turso database URL
TURSO_AUTH_TOKENNo—Turso auth token (production)
WORKER_SECRETYesdev-secretShared secret for authenticating inbound email delivery
FRONTEND_URLNohttp://localhost:4321Frontend URL for CORS

Development

See CONTRIBUTING.md for development setup and contribution guidelines.

# Run tests
./gradlew :server:core:test

# Build CLI
./gradlew :cli:installDist
./cli/build/install/cli/bin/cli --help

# Build MCP server
cd mcp-server && npm install && npm run build

License

This repository uses per-component licensing:

ComponentLicense
server/coreAGPL-3.0
mcp-serverMIT
cliMIT
shared-modelsMIT

The API server is AGPL-3.0 to ensure modifications to the hosted service remain open source. The MCP server, CLI, and shared models are MIT for maximum adoption flexibility.

Installation

Source-derived launch command. Check the maintainer’s required arguments and credentials before running:

bash
npx -y @useblip/email

Set up in your AI client

Merge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.

json
{
  "mcpServers": {
    "io-github-blipemail-email": {
      "command": "npx",
      "args": [
        "-y",
        "@useblip/email"
      ]
    }
  }
}

Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.

Claude Desktop setup reference

Package

@useblip/emailnpm

Compatible MCP Clients

io.github.blipemail/email works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.

  • Claude Desktop~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.
  • Cursor~/.cursor/mcp.jsonRestart Cursor for changes to take effect.
  • VS Code.vscode/mcp.jsonReload VS Code window for changes to take effect.
  • Windsurf~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect.
  • Claude Code.mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.

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