---
title: "MCP-compatible JSON-RPC on /mcp/tools"
method: POST
path: "/mcp/tools"
tags: ["MCP"]
---

# MCP-compatible JSON-RPC on /mcp/tools

`POST /mcp/tools`

## Request

- Base URL: `https://api.agentstack.tech` (the document declares no server; this is the origin it was published from)
- URL: `https://api.agentstack.tech/mcp/tools`
- Auth: one of:
  - API key in header `X-API-Key`
  - HTTP bearer

One POST /mcp/tools.

JSON-RPC uses the same handler as POST /mcp (tools/list, tools/call, errors).
A body that is not JSON-RPC is a scanner probe and returns the tool list.

## Headers

- `Idempotency-Key` string

## Response `200`

Successful Response

- unknown

## Other responses

- `400`: Bad Request
- `401`: Unauthorized
- `403`: Forbidden
- `404`: Not Found
- `409`: Conflict
- `422`: Unprocessable Entity
- `429`: Too Many Requests
- `500`: Internal Server Error

---

[API](https://skmtc.dev/agentstack/apis/agentstack-core-api.md) · [All operations](https://skmtc.dev/agentstack/apis/agentstack-core-api/llms.txt) · [OpenAPI document](https://skmtc.dev/agentstack/apis/agentstack-core-api/revisions/79f4a4dd8813?raw)