x402 Pay — USDC API Payment Helper

List Paid Apis

list_paid_apis

Read-onlyIdempotent

List paid API operations declared by the live SqueezeOS OpenAPI document, bounded by limit. Returns method, path, job and advertised price. Use for route selection, then inspect that resource's fresh 402 challenge; listed prices do not authorize payment.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`limit`	No	Maximum number of declared paid operations to return; not an exhaustive catalog count.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`ok`	Yes
`count`	Yes
`source`	Yes
`operations`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 13, 2026

addedInput schema / properties / limit / description

Added value: +"Maximum number of declared paid operations to return; not an exhaustive catalog count."

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "count": {
+      "type": "integer"
+    },
+    "ok": {
+      "type": "boolean"
+    },
+    "operations": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {
+          "advertised_price": {},
+          "job": {},
+          "method": {
+            "type": "string"
+          },
+          "path": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "method",
+          "path",
+          "job",
+          "advertised_price"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "source": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "ok",
+    "source",
+    "count",
+    "operations"
+  ],
+  "type": "object"
+}

First observedSep 5, 2026

TDQS

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