CDT Express MCP Server

Interact with climate metrics via Riskthinking.AI's CDT Express API in supported AI chat experiences.

This project contains:

• The core MCP server that can be used to interact with Riskthinking.AI's CDT Express API.
• Distributable MCPB extension for the Claude desktop app in releases.

MCPB Extension Installation

1. Download and install the Claude app from https://claude.ai/download.
2. Download the cdt-express.mcpb file from the releases page.
3. Open the Claude Desktop app, go to "Settings" -> "Extensions" -> "Advanced settings".
4. Click on "Install Extension", select the downloaded cdt-express.mcpb file.
5. Click on "Install".
6. When prompted, enter your CDT Express API key, which is available at https://velo.riskthinking.ai/cdt-express.
7. Review and enable the extension, then close the preview.
8. The extension will be installed and you can use it in the app.
9. When using for the first time, you may see the following prompt requesting for permission to use the extension provided tools, click on "Allow once" or "Always allow". a. Alternatively, you can manually configure in "Settings" -> "Extensions", and configure the Tool permissions for this extension.
10. To update a new version, simply follow the same steps to "Install Extension", and click on "Update".

Roadmap

CDT Express Climate API:

• Since v0.1.0: Climate exposure metrics
• Since v0.2.0: Climate impact metrics
• Since v0.2.0: Probability-adjusted impact
• Since v0.2.0: Climate exposure distribution
• Since v0.2.0: Climate impact distribution

Other CDT Express APIs:

• Since v0.3.0: Physical Assets API
• Since v0.3.0: Companies API
• Since v0.3.0: Markets API

Integration:

• Since v0.1.0: Support Stdio transport for local MCP server connectivity (e.g. extension for Claude desktop app and IDEs such as Cursor.)
• Support Streamable HTTP transport for remote MCP server connectivity to support web AI chat experiences.

Development

• [Optional] Use nvm to manage Node.js versions.
  • nvm use to use the version specified in .nvmrc.
• Install dependencies: npm i
• Build and package the extension: npm run pack:dev. You should find the cdt-express.mcpb file in the root directory.
  • This command is different from npm run pack in that it installs back the development dependencies after packaging.

Release

1. [Human] Bump and sync the version in package.json and src/server.ts (constant SERVER_VERSION), without the v prefix (e.g. 0.5.2 instead of v0.5.2.)
2. [Human] Create a new git tag with the new version, with the v prefix (e.g. v0.5.2). Typically do this through a new GitHub Release https://github.com/RiskThinking/cdt-express-mcp/releases/new, which has the advantage of ensuring code integrity and avoid unexpected local commits/changes.
3. [CI/CD] The GitHub Actions workflow will be triggered, and the MCPB extension will be built and published to the MCP Registry.

• The version across the git tag and package.json are checked to ensure consistency.

MCP Registry server.json

The version, package[0].sha256, and package[0].identifier fields in server.json are automatically calculated and injected by the GitHub Actions workflow, therefore intentionally not kept in version control.

Please refer to https://github.c

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