Invoice Preflight

invoice_preflight_50_pages

Paid invoice OCR ($0.475 USDC on Base): process complete PDF/image invoices up to 50 pages. Oversized PDFs are rejected before OCR.

Agent entry points: risky external action → use Agent Action Gate when a combined action-specific safety assessment is needed; unclear capability/provider → use free /api/discover; constrained comparison between callable alternatives → use paid route_tool; known single capability → call the direct tool; multi-step objective → read the matching workflow recipe and call only relevant steps. Workflows are stateless recipes, not executors; calls are paid separately and are not bundle charged. Agent Action Gate does not approve payment, sign or broadcast transactions, evaluate seller reputation, replace transaction simulation, replace route_tool, or replace human approval.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`expected`	No
`mime_type`	No
`document_url`	No
`document_base64`	No

Output Schema

TableJSON Schema

Name	Required	Description	Default
`meta`	No
`next`	No
`error`	No
`checks`	Yes
`result`	No
`status`	No
`invoice`	Yes
`payment`	No
`agent_ux`	No
`decision`	Yes
`evidence`	Yes
`warnings`	Yes
`source_sha256`	Yes
`pages_processed`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed7 schema fields changedOct 8, 2026

addedOutput schema / properties / agent_ux

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "error": {
+      "anyOf": [
+        {},
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "meta": {
+      "additionalProperties": {},
+      "propertyNames": {
+        "type": "string"
+      },
+      "type": "object"
+    },
+    "next": {
+      "items": {},
+      "type": "array"
+    },
+    "payment": {
+      "additionalProperties": false,
+      "properties": {
+        "execution_status": {
+          "enum": [
+            "not_started",
+            "succeeded",
+            "failed",
+            "unknown"
+          ],
+          "type": "string"
+        },
+        "status": {
+          "enum": [
+            "not_required",
+            "required",
+            "settled",
+            "failed",
+            "unknown"
+          ],
+          "type": "string"
+        }
+      },
+      "required": [
+        "status",
+        "execution_status"
+      ],
+      "type": "object"
+    },
+    "result": {},
+    "status": {
+      "enum": [
+        "succeeded",
+        "failed",
+        "partial",
+        "outcome_unknown"
+      ],
+      "type": "string"
+    }
+  },
+  "required": [
+    "status",
+    "result",
+    "error",
+    "meta",
+    "payment",
+    "next"
+  ],
+  "type": "object"
+}

addedOutput schema / properties / error

Added value: +{
+  "anyOf": [
+    {},
+    {
+      "type": "null"
+    }
+  ]
+}

addedOutput schema / properties / meta

Added value: +{
+  "additionalProperties": {},
+  "propertyNames": {
+    "type": "string"
+  },
+  "type": "object"
+}

addedOutput schema / properties / next

Added value: +{
+  "items": {},
+  "type": "array"
+}

addedOutput schema / properties / payment

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "execution_status": {
+      "enum": [
+        "not_started",
+        "succeeded",
+        "failed",
+        "unknown"
+      ],
+      "type": "string"
+    },
+    "status": {
+      "enum": [
+        "not_required",
+        "required",
+        "settled",
+        "failed",
+        "unknown"
+      ],
+      "type": "string"
+    }
+  },
+  "required": [
+    "status",
+    "execution_status"
+  ],
+  "type": "object"
+}

addedOutput schema / properties / result
```
Added value: +{}
```

addedOutput schema / properties / status

Added value: +{
+  "enum": [
+    "succeeded",
+    "failed",
+    "partial",
+    "outcome_unknown"
+  ],
+  "type": "string"
+}

Changed1 schema field changedSep 25, 2026

addedInput schema / properties / expected / properties / line_items

Added value: +{
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "amount": {
+        "pattern": "^-?\\d+(?:\\.\\d{1,2})?$",
+        "type": "string"
+      },
+      "description": {
+        "maxLength": 300,
+        "minLength": 1,
+        "type": "string"
+      }
+    },
+    "required": [
+      "description",
+      "amount"
+    ],
+    "type": "object"
+  },
+  "maxItems": 1000,
+  "minItems": 1,
+  "type": "array"
+}

Changed2 schema fields changedSep 24, 2026

removedInput schema / properties / document_xml

Removed value: -{
-  "maxLength": 1000000,
-  "minLength": 1,
-  "type": "string"
-}

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": false,
+  "properties": {
+    "checks": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "actual": {
+            "type": "string"
+          },
+          "calculated": {
+            "type": "string"
+          },
+          "expected": {
+            "type": "string"
+          },
+          "field": {
+            "type": "string"
+          },
+          "status": {
+            "enum": [
+              "match",
+              "discrepancy",
+              "needs_review"
+            ],
+            "type": "string"
+          }
+        },
+        "required": [
+          "field",
+          "status"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "decision": {
+      "enum": [
+        "match",
+        "discrepancy",
+        "needs_review"
+      ],
+      "type": "string"
+    },
+    "evidence": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "field": {
+            "type": "string"
+          },
+          "source": {
+            "type": "string"
+          },
+          "text": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "field",
+          "source",
+          "text"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "invoice": {
+      "additionalProperties": false,
+      "properties": {
+        "currency": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "line_items": {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "amount": {
+                "type": "string"
+              },
+              "description": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              }
+            },
+            "required": [
+              "description",
+              "amount"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "number": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "purchase_order": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "subtotal": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "supplier_name": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "tax": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "total": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "required": [
+        "number",
+        "supplier_name",
+        "purchase_order",
+        "currency",
+        "subtotal",
+        "tax",
+        "total",
+        "line_items"
+      ],
+      "type": "object"
+    },
+    "pages_processed": {
+      "exclusiveMinimum": 0,
+      "maximum": 9007199254740991,
+      "type": "integer"
+    },
+    "source_sha256": {
+      "type": "string"
+    },
+    "warnings": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "decision",
+    "invoice",
+    "checks",
+    "evidence",
+    "source_sha256",
+    "warnings"
+  ],
+  "type": "object"
+}

AddedSep 24, 2026

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