Qumge: Agent Capabilities & Skills

call_cap

Call a Cap on the user's behalf and return its response. Use this when you cannot make the HTTP call yourself: qumge charges the user's qumge balance and forwards the call at the same price as calling it over HTTP through Qumge. Operations and prices come from get_cap. Prefer operation + input: when the operation declares an input_schema, input is validated against it before anything is charged or forwarded. Needs the user's qumge key in the Authorization header. A 5xx from the Cap is free; a 402 means the user's balance or this Cap's monthly limit stopped it. (Older clients may still call this tool as call_app — it still works.)

Input Schema

TableJSON Schema

Name	Required	Description
`body`	No	Request body. An object is sent as JSON; a string is sent as-is.
`path`	No	The route path from get_cap, e.g. '/api/videos'. A query string may be appended or passed separately in `query`.
`slug`	Yes	The Cap's slug, from search_caps.
`input`	No	Arguments for the operation. Validated against its input_schema when it has one — an invalid input is refused as a tool error (isError), and nothing is charged or forwarded.
`query`	No	Query string without the leading '?'.
`accept`	No	Optional Accept header.
`method`	No	HTTP method. Default GET — the routes and their methods are in get_cap.
`operation`	No	Operation name from get_cap (a route's `name`). Use with `input`; takes precedence over `path`/`method` when both are given.
`qumge_key`	No	Optional: your Qumge API key, for clients that cannot set an Authorization header. Takes precedence over the header. Never echoed back.
`content_type`	No	Only needed when `body` is a string and the app expects a specific type.

Output Schema

TableJSON Schema

Name	Required	Description
`body`	Yes
`path`	Yes
`binary`	No
`method`	Yes
`status`	Yes
`call_id`	No
`free_call`	No	Set when this call used one of the operation's free calls (users who have topped up).
`truncated`	No
`body_bytes`	No
`direct_url`	No
`content_type`	No
`charged_micro_usd`	No
`remaining_micro_usd`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 9, 2026

changedInput schema / properties / slug / description

Previous value: -"The cap's slug, from search_caps."New value: +"The Cap's slug, from search_caps."

Changed1 schema field changedOct 7, 2026

changedInput schema / properties / input / description

Previous value: -"Arguments for the operation. Validated against its input_schema when it has one — an invalid input is refused with 422, and nothing is charged or forwarded."New value: +"Arguments for the operation. Validated against its input_schema when it has one — an invalid input is refused as a tool error (isError), and nothing is charged or forwarded."

Changed1 schema field changedOct 7, 2026

addedOutput schema / properties / free_call

Added value: +{
+  "description": "Set when this call used one of the operation's free calls (users who have topped up).",
+  "properties": {
+    "limit": {
+      "type": "integer"
+    },
+    "pending": {
+      "type": "boolean"
+    },
+    "remaining": {
+      "type": "integer"
+    },
+    "used": {
+      "type": "integer"
+    }
+  },
+  "type": [
+    "object",
+    "null"
+  ]
+}

Changed1 schema field changedSep 28, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "binary": {
+      "type": "boolean"
+    },
+    "body": {
+      "type": "string"
+    },
+    "body_bytes": {
+      "type": "integer"
+    },
+    "call_id": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "charged_micro_usd": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "content_type": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "direct_url": {
+      "type": "string"
+    },
+    "method": {
+      "type": "string"
+    },
+    "path": {
+      "type": "string"
+    },
+    "remaining_micro_usd": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "status": {
+      "type": "integer"
+    },
+    "truncated": {
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "status",
+    "method",
+    "path",
+    "body"
+  ],
+  "type": "object"
+}

AddedSep 28, 2026

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