KosmoKrator

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Heroku MCP Integration for Claude Code

Connect Heroku to Claude Code through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

7 functions 7 read 0 write API key auth
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Connect Heroku to Claude Code

Connect local KosmoKrator integrations to Claude Code through one scoped MCP gateway entry.

Add KosmoKrator as a stdio MCP server in the Claude Code project config and select the integrations that should be visible. The gateway is local, scoped to this integration, and starts with --write=deny so Claude Code can inspect read-capable tools without receiving write access by default.

Heroku MCP Config for Claude Code

Claude Code can launch the local kosmo binary directly from the project MCP config.

{
  "mcpServers": {
    "kosmokrator-heroku": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=heroku",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=heroku --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only Heroku instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

Heroku Tools Visible to Claude Code

Claude Code sees stable MCP tool names generated from the Heroku integration catalog.

MCP toolSource functionTypeDescription
integration__heroku__heroku_list_apps heroku.heroku_list_apps Read List all Heroku apps the authenticated user has access to. Returns app names, IDs, regions, and status.
integration__heroku__heroku_get_app heroku.heroku_get_app Read Get details for a specific Heroku app by ID or name. Returns full app information including region, stack, and Git URL.
integration__heroku__heroku_list_dynos heroku.heroku_list_dynos Read List all dynos for a given Heroku app. Returns dyno names, types, sizes, states, and uptime.
integration__heroku__heroku_list_addons heroku.heroku_list_addons Read List all add-ons attached to a given Heroku app. Returns add-on names, plans, states, and provider details.
integration__heroku__heroku_list_domains heroku.heroku_list_domains Read List all domains for a given Heroku app. Returns domain hostnames, types (custom/Heroku), and status.
integration__heroku__heroku_list_collaborators heroku.heroku_list_collaborators Read List all collaborators for a given Heroku app. Returns collaborator emails, roles, and permissions.
integration__heroku__heroku_get_current_user heroku.heroku_get_current_user Read Get information about the current authenticated Heroku account, including email, name, and verified status.

Related Heroku Pages

Heroku CLIUse direct JSON commands instead of MCP discovery. Heroku MCPFull gateway reference and MCP tool names. KosmoKrator for Claude CodeClient-level gateway setup.