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cpp-mcp API Gateway
urn REST APIs into MCP tools using configuration, powered by a native C++ framework.
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cpp-mcp API Gateway
Example session with this skill installed
Help me set up the cpp-mcp gateway to connect to my local Jira instance for an MCP-compatible agent. I'm on Linux and want to use the prebuilt binary.
- Read your context and instructions
- Compiled the cpp-mcp api gateway
I will help you set up the cpp-mcp API gateway using the prebuilt Linux binary to expose Jira as MCP tools.
Jira Gateway Setup
| Step | Action | Command / Detail |
|---|---|---|
| 1 | Extract Binary | unzip cpp-mcp-linux.zip -d ~/opt/cpp-mcp |
| 2 | Permissions | chmod +x ~/opt/cpp-mcp/api_gateway |
| 3 | Config File | Use configs/jira.json included in the package |
| 4 | Credentials | Set JIRA_EMAIL and JIRA_API_TOKEN in your environment |
Claude Desktop Configuration
Add this to your claude_desktop_config.json:
{
"mcpServers": {
"jira-native": {
"command": "/home/user/opt/cpp-mcp/api_gateway",
"args": ["/home/user/opt/cpp-mcp/configs/jira.json"],
"env": {
"JIRA_EMAIL": "your-email@example.com",
"JIRA_API_TOKEN": "YOUR_SECRET_TOKEN"
}
}
}
}
Next steps
- Generate a Jira API token from your Atlassian account security settings.
- Verify the
base_urlinconfigs/jira.jsonmatches your Jira instance URL. - Restart Claude Desktop and look for the
jira-nativetools in the hammer icon menu.
Connects securely to your tools. The creator never sees your data.
About this skill
Cpp-mcp API Gateway — Connect REST APIs to AI Agents
Turn REST APIs into MCP tools using cpp-mcp, a native C++20 MCP framework and configuration-driven API gateway.
What's included?
-
Prebuilt Windows and Linux binaries: Download the ZIP, extract it, select the binary for your operating system, and follow the setup instructions.
-
API gateway configurations: Use the supplied GitHub, GitLab, and Jira configurations as starting points when included in the package.
-
Configuration-driven integrations: Expose REST API endpoints as MCP tools without writing a separate C++ implementation for every API operation.
-
Native C++ framework: Build custom MCP servers and integrations when you need functionality beyond simple REST API mappings.
-
MCP client integration: Connect the gateway to compatible AI coding agents using the transport and configuration format supported by your client.
What can you do with cpp-mcp?
- Connect existing REST APIs
- Define API endpoints, HTTP methods, parameters, headers, and authentication using the gateway's supported configuration format. Let MCP-compatible agents discover and invoke the configured tools.
Get started without compiling
The downloadable ZIP provides prebuilt binaries for Windows and Linux. Extract the archive, choose the appropriate executable, configure your API credentials, and launch the gateway using the included documentation.
You don't need to build cpp-mcp from source just to try it. Check the release notes for supported operating systems, architectures, and runtime dependencies.
Integrate with AI coding agents
Connect cpp-mcp to compatible MCP clients such as Claude Desktop, Cursor, and supported VS Code configurations. Other agents may also work, depending on their MCP transport support and configuration requirements.
Migrate existing MCP integrations
Already have an MCP server? Use cpp-mcp's configuration-driven gateway to migrate straightforward REST API wrappers without recreating every integration from scratch.
For custom tools, resources, prompts, or complex business logic, use the C++ framework to evaluate a more targeted migration. Preserve existing tool contracts where practical, validate behavior, and switch over incrementally.
Who is it for?
- C++ developers building MCP servers and AI infrastructure.
- Developers who want to connect REST APIs to AI coding agents.
- Teams looking to reduce repetitive API integration code.
- Engineers who prefer native binaries and control over their runtime environment.
- Developers migrating existing REST-wrapper MCP servers to a configuration-driven approach.
Getting started
- Download the cpp-mcp ZIP package.
- Extract it and select the Windows or Linux binary for your system.
- Locate the included configuration files and review the setup documentation.
- Set the required API credentials through environment variables or an appropriate secret-management mechanism.
- Launch the gateway and configure your MCP-compatible client. Test a read-only tool before enabling operations that modify data. If you need custom behavior or want to develop cpp-mcp itself, you can also build the project from source using its CMake-based workflow.
Security and deployment
Use least-privilege API credentials, keep secrets out of source control, and review the permissions of every exposed tool. Restrict gateway network access and validate configuration before exposing services to agents.
How to use
Skills on Agensi run inside your AI agent. Copy the prompt, paste it into your agent, and it connects to Agensi and installs this skill for you. If a payment is needed, your agent shows it to you first.
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