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Swarms MCP Client Proxy - Execute Tool Call
x402
Swarms MCP Client Proxy - Execute Tool Call is a paid API for AI agents from mcp-gateway.swarms.world, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Proxies a tool call to a target MCP (Model Context Protocol) server and returns the execution result
Price / call$0.01
Success—
StatusUnknown
How this service works
Proxy MCP (Model Context Protocol) tool calls to a target MCP server.
Output
Returns an object with a 'content' array containing the tool execution results (each item is an object with tool-specific data) and an 'isError' boolean indicating whether the call failed. On success, isError is false and content holds the structured output from the MCP tool.
Example use cases
Example prompt
“Forward this tool call to the MCP server at https://my-mcp-server.example.com — invoke the 'get_weather' tool with arguments {"city": "San Francisco"} and give me the result.”
Technical details
Endpoint
POSThttps://mcp-gateway.swarms.world/mcp/requestWhen to prefer
Use this endpoint when you need to invoke a specific tool on a remote MCP server without establishing a direct connection to it, or when you want to route MCP tool calls through a managed gateway with per-call billing. Prefer this over direct MCP connections when operating in environments where outbound MCP connections are restricted or when you want centralized logging and billing via the Swarms gateway.
Side effects
- Target MCP server unreachable — isError: true with connection error in content
- Invalid tool name or arguments — isError: true with validation error details
- MCP server returns an error for the tool call — isError: true with server error message
- Payment not processed — 402 Payment Required before request is fulfilled
- Malformed request body — 400 Bad Request if MCP payload structure is invalid
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| content | array | Tool execution results |
| isError | boolean | Whether the tool call resulted in an error |
Tags
x402
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