{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "pix-mcp configuration",
  "description": "A Claude-style connection subset with pix-specific discovery and lifecycle options. Environment expansion and HTTP URL/header validation also occur at runtime.",
  "type": "object",
  "required": ["mcpServers"],
  "additionalProperties": false,
  "properties": {
    "$schema": {
      "$ref": "#/$defs/text",
      "description": "Editor hint only; never fetched by pix-mcp."
    },
    "mcpServers": {
      "type": "object",
      "maxProperties": 32,
      "propertyNames": { "pattern": "^[A-Za-z0-9_-]{1,48}$" },
      "additionalProperties": { "$ref": "#/$defs/server" }
    }
  },
  "$defs": {
    "text": { "type": "string", "minLength": 1, "pattern": "^[^\u0000]*$" },
    "string": { "type": "string", "pattern": "^[^\u0000]*$" },
    "timeout": {
      "type": "integer",
      "minimum": 1,
      "maximum": 2147483647,
      "default": 30000,
      "description": "Fixed deadline in milliseconds; progress does not extend it."
    },
    "common": {
      "type": "object",
      "properties": {
        "description": { "$ref": "#/$defs/text" },
        "timeout": {
          "$ref": "#/$defs/timeout",
          "description": "Hard deadline for one tool invocation, prompt retrieval, or resource read."
        },
        "startupTimeoutMs": {
          "$ref": "#/$defs/timeout",
          "description": "pix extension: complete transport connection and initialization handshake."
        },
        "catalogTimeoutMs": {
          "$ref": "#/$defs/timeout",
          "description": "pix extension: one complete catalog snapshot, including all pages."
        },
        "disabled": { "const": false }
      }
    },
    "stdio": {
      "allOf": [{ "$ref": "#/$defs/common" }],
      "type": "object",
      "required": ["command"],
      "properties": {
        "type": { "const": "stdio" },
        "command": { "$ref": "#/$defs/text" },
        "args": { "type": "array", "items": { "$ref": "#/$defs/string" } },
        "cwd": {
          "$ref": "#/$defs/text",
          "description": "Resolved relative to the configuration directory."
        },
        "env": {
          "type": "object",
          "propertyNames": { "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$" },
          "additionalProperties": { "$ref": "#/$defs/string" }
        }
      },
      "not": { "anyOf": [{ "required": ["url"] }, { "required": ["headers"] }] }
    },
    "http": {
      "allOf": [{ "$ref": "#/$defs/common" }],
      "type": "object",
      "required": ["type", "url"],
      "properties": {
        "type": { "enum": ["http", "streamable-http"] },
        "url": { "$ref": "#/$defs/text" },
        "headers": {
          "type": "object",
          "propertyNames": { "pattern": "^[!#$%&'*+.^_`|~0-9A-Za-z-]+$" },
          "additionalProperties": { "$ref": "#/$defs/string" }
        }
      },
      "not": {
        "anyOf": [
          { "required": ["command"] },
          { "required": ["args"] },
          { "required": ["env"] },
          { "required": ["cwd"] }
        ]
      }
    },
    "server": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "type": true,
        "command": true,
        "args": true,
        "env": true,
        "cwd": true,
        "url": true,
        "headers": true,
        "description": true,
        "timeout": true,
        "startupTimeoutMs": true,
        "catalogTimeoutMs": true,
        "disabled": { "type": "boolean" }
      },
      "if": {
        "required": ["disabled"],
        "properties": { "disabled": { "const": true } }
      },
      "then": {
        "description": "Disabled entries skip value validation and environment expansion, but unknown fields remain errors."
      },
      "else": {
        "oneOf": [{ "$ref": "#/$defs/stdio" }, { "$ref": "#/$defs/http" }]
      }
    }
  }
}