mcp.cabal

cabal-version:      3.4
-- The cabal-version field refers to the version of the .cabal specification,
-- and can be different from the cabal-install (the tool) version and the
-- Cabal (the library) version you are using. As such, the Cabal (the library)
-- version used must be equal or greater than the version stated in this field.
-- Starting from the specification version 2.2, the cabal-version field must be
-- the first thing in the cabal file.

-- Initial package description 'mcp' generated by
-- 'cabal init'. For further documentation, see:
--   http://haskell.org/cabal/users-guide/
--
-- The name of the package.
name:               mcp

-- The package version.
-- See the Haskell package versioning policy (PVP) for standards
-- guiding when and how versions should be incremented.
-- https://pvp.haskell.org
-- PVP summary:     +-+------- breaking API changes
--                  | | +----- non-breaking API additions
--                  | | | +--- code changes with no API change
version:            0.3.0.0

-- A short (one-line) description of the package.
synopsis:           A Haskell implementation of the Model Context Protocol (MCP)

-- A longer description of the package.
description:        
    This library provides a complete implementation of the Model Context Protocol (MCP)
    for Haskell. MCP is a protocol that enables seamless communication between AI models
    and external tools, resources, and services. This implementation supports the latest
    MCP protocol version (2025-06-18) with full compatibility for resources, tools, 
    prompts, and all standard MCP message types. It provides both a server framework 
    and type definitions for building MCP-compliant applications.
    
    Features dual transport support:
    
    * StdIO transport for process-based clients (e.g., Claude Desktop)
    * HTTP transport following the official MCP specification for web-based integration,
      and supports OAuth authentication.
        
    Both transports use the same MCPServer typeclass, allowing seamless switching between
    communication methods while maintaining identical server logic.

-- The license under which the package is released.
license:            MIT

-- The file containing the license text.
license-file:       LICENSE

-- The package author(s).
author:             Matthias Pall Gissurarson

-- An email address to which users can send suggestions, bug reports, and patches.
maintainer:         mpg@mpg.is

-- A copyright notice.
-- copyright:
category:           Network
build-type:         Simple

-- Extra doc files to be distributed with the package, such as a CHANGELOG or a README.
extra-doc-files:    CHANGELOG.md

-- Extra source files to be distributed with the package, such as examples, or a tutorial module.
extra-source-files:
    schema.ts
    examples/README.md
    examples/http-server.hs
    examples/claude-desktop-config.json
    examples/full-config-example.json

homepage:       https://github.com/Tritlo/mcp

source-repository head
  type:     git
  location: https://github.com/Tritlo/mcp.git

common warnings
    ghc-options: -Wall

library
    -- Import common warning flags.
    import:           warnings

    -- Modules exported by the library.
    exposed-modules:  
        MCP.Types
        MCP.Protocol  
        MCP.Server
        MCP.Server.StdIO
        MCP.Server.HTTP
        MCP.Server.Auth

    -- Modules included in this library but not exported.
    -- other-modules:

    -- LANGUAGE extensions used by modules in this package.
    -- other-extensions:

    -- Other library packages from which modules are imported.
    build-depends:    
        base >= 4.18.2.1 && <= 4.21.0.0,
        aeson >= 2.1 && < 2.3,
        text >= 2.0 && <= 2.1.2,
        containers >= 0.6 && < 0.7,
        bytestring >= 0.11 && < 0.12,
        unordered-containers >= 0.2 && < 0.3,
        stm >= 2.5 && < 2.6,
        async >= 2.2 && < 2.3,
        mtl >= 2.3 && < 2.4,
        transformers >= 0.6 && < 0.7,
        warp >= 3.3 && < 3.4,
        wai >= 3.2 && < 3.3,
        wai-extra >= 3.1 && < 3.2,
        servant-server >= 0.19 && < 0.21,
        servant >= 0.19 && < 0.21,
        http-types >= 0.12 && < 0.13,
        servant-auth >= 0.4 && < 0.5,
        servant-auth-server >= 0.4 && < 0.5,
        jose >= 0.10 && < 0.12,
        cryptonite >= 0.30 && < 0.31,
        memory >= 0.18 && < 0.19,
        base64-bytestring >= 1.2 && < 1.3,
        http-conduit >= 2.3 && < 2.4,
        random >= 1.2 && < 1.3,
        time >= 1.12 && < 1.13,
        uuid >= 1.3 && < 1.4,
        data-default >= 0.7 && < 0.8

    -- Directories containing source files.
    hs-source-dirs:   src

    -- Base language which the package is written in.
    default-language: GHC2021

executable mcp
    -- Import common warning flags.
    import:           warnings

    -- .hs or .lhs file containing the Main module.
    main-is:          Main.hs

    -- Modules included in this executable, other than Main.
    -- other-modules:

    -- LANGUAGE extensions used by modules in this package.
    -- other-extensions:

    -- Other library packages from which modules are imported.
    build-depends:
        base >= 4.18.2.1 && <= 4.21.0.0,
        mcp,
        aeson >= 2.1 && < 2.3,
        text >= 2.0 && <= 2.1.2,
        containers >= 0.6 && < 0.7,
        scientific >= 0.3 && < 0.4,
        time >= 1.12 && < 1.13,
        data-default >= 0.7 && < 0.8

    -- Directories containing source files.
    hs-source-dirs:   app

    -- Base language which the package is written in.
    default-language: GHC2021

executable mcp-http
    -- Import common warning flags.
    import:           warnings
    ghc-options:      -threaded

    -- .hs or .lhs file containing the Main module.
    main-is:          http-server.hs

    -- Modules included in this executable, other than Main.
    -- other-modules:

    -- LANGUAGE extensions used by modules in this package.
    -- other-extensions:

    -- Other library packages from which modules are imported.
    build-depends:
        base >= 4.18.2.1 && <= 4.21.0.0,
        mcp,
        aeson >= 2.1 && < 2.3,
        text >= 2.0 && <= 2.1.2,
        containers >= 0.6 && < 0.7,
        scientific >= 0.3 && < 0.4,
        time >= 1.12 && < 1.13,
        optparse-applicative >= 0.17 && < 0.19,
        data-default >= 0.7 && < 0.8

    -- Directories containing source files.
    hs-source-dirs:   examples

    -- Base language which the package is written in.
    default-language: GHC2021

executable mcp-stdio
    -- Import common warning flags.
    import:           warnings
    ghc-options:      -threaded

    -- .hs or .lhs file containing the Main module.
    main-is:          stdio-server.hs

    -- Modules included in this executable, other than Main.
    -- other-modules:

    -- LANGUAGE extensions used by modules in this package.
    -- other-extensions:

    -- Other library packages from which modules are imported.
    build-depends:
        base >= 4.18.2.1 && <= 4.21.0.0,
        mcp,
        aeson >= 2.1 && < 2.3,
        text >= 2.0 && <= 2.1.2,
        containers >= 0.6 && < 0.7,
        scientific >= 0.3 && < 0.4,
        time >= 1.12 && < 1.13,
        optparse-applicative >= 0.17 && < 0.19,
        data-default >= 0.7 && < 0.8

    -- Directories containing source files.
    hs-source-dirs:   examples

    -- Base language which the package is written in.
    default-language: GHC2021

test-suite mcp-test
    -- Import common warning flags.
    import:           warnings
    ghc-options: -threaded

    -- Base language which the package is written in.
    default-language: GHC2021

    -- Modules included in this executable, other than Main.
    -- other-modules:

    -- LANGUAGE extensions used by modules in this package.
    -- other-extensions:

    -- The interface type and version of the test suite.
    type:             exitcode-stdio-1.0

    -- Directories containing source files.
    hs-source-dirs:   test

    -- The entrypoint to the test suite.
    main-is:          Main.hs

    -- Test dependencies.
    build-depends:
        base >= 4.18.2.1 && <= 4.21.0.0,
        mcp