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sponsio-web.vercel.app

Developer ToolsTools verifiedSep 9, 2026

sponsio records the tools a page registers, commits that record to your repo, and fails the build when the contract changes underneath the agents already using it.

get_startedAnswer

How to install sponsio and record a first baseline of the WebMCP tools a site exposes. Returns the exact shell commands.

View tool JSON

{
  "name": "get_started",
  "kind": "answer",
  "impl": "imperative",
  "description": "How to install sponsio and record a first baseline of the WebMCP tools a site exposes. Returns the exact shell commands.",
  "inputSchema": {
    "type": "object",
    "properties": {},
    "additionalProperties": false
  }
}

explain_severityAction

Explain how sponsio grades a change to a WebMCP tool contract, and why a changed description or a dropped readOnly annotation is graded the way it is.

View tool JSON

{
  "name": "explain_severity",
  "kind": "act",
  "impl": "imperative",
  "description": "Explain how sponsio grades a change to a WebMCP tool contract, and why a changed description or a dropped readOnly annotation is graded the way it is.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "level": {
        "type": "string",
        "enum": [
          "breaking",
          "warning",
          "safe"
        ],
        "description": "Which severity to explain. Omit for all three."
      }
    },
    "additionalProperties": false
  }
}

list_check_categoriesAnswer

List the categories of check sponsio runs against a site's WebMCP surface, beyond contract diffing.

View tool JSON

{
  "name": "list_check_categories",
  "kind": "answer",
  "impl": "imperative",
  "description": "List the categories of check sponsio runs against a site's WebMCP surface, beyond contract diffing.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "limit": {
        "type": "integer",
        "minimum": 1,
        "maximum": 20,
        "description": "How many categories to return. Defaults to all of them."
      }
    },
    "additionalProperties": false
  }
}

check_requirementsAnswer

Check whether a given Node and Chrome version can run sponsio's live capture.

View tool JSON

{
  "name": "check_requirements",
  "kind": "answer",
  "impl": "imperative",
  "description": "Check whether a given Node and Chrome version can run sponsio's live capture.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "node": {
        "type": "string",
        "description": "Node major version, e.g. \"20\""
      },
      "chrome": {
        "type": "string",
        "description": "Chrome major version, e.g. \"151\""
      }
    },
    "additionalProperties": false
  }
}