Tanod Finance

utilpeek: check the format and check digits of an IBAN, VAT, ISBN or other ID

validate_identifier

Read-onlyIdempotent

utilpeek: check the format and check digits of an identifier. Input: kind and value. Returns valid, reason (invalid_checksum, invalid_length, invalid_format, ... when not valid), compact, formatted and a kind-specific detail (an IBAN's country and bank code, an ISBN's ISBN-10/13 forms, ...). An invalid identifier is a normal answer (charged); a malformed request is a 422 (not charged). Checks format and check digits only, offline (python-stdnum): a valid result does not mean the identifier exists or is registered (no registry, bank or VIES call). Payment card numbers are not accepted, not even under luhn. The submitted value is processed in memory only, never logged or stored. Typically under 0.1 s. Price: USD 0.001. Free: 10 utilpeek calls per IP per UTC day.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`kind`	Yes	Identifier kind: iban, bic, vat (EU, format only, no VIES), isbn, issn, ean, isin, lei, imo, luhn (generic mod-10), or a national format (au_abn, br_cnpj, br_cpf, ca_bn, ch_uid, de_idnr, es_nif, fr_siren, fr_siret, gb_vat, in_pan, mx_rfc, nl_bsn, us_ein). No payment card numbers.
`value`	Yes	The identifier (1-64 printable ASCII characters).

Output Schema

TableJSON Schema

Name	Required	Description
`kind`	No
`note`	No
`error`	No	Only on an error result: an object {code, message}, or the reason string of an x402 PaymentRequired object.
`label`	No
`valid`	No
`detail`	No
`reason`	No
`source`	No
`compact`	No
`formatted`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 8, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "compact": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "detail": {
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "error": {
+      "description": "Only on an error result: an object {code, message}, or the reason string of an x402 PaymentRequired object."
+    },
+    "formatted": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "kind": {
+      "enum": [
+        "iban",
+        "bic",
+        "vat",
+        "isbn",
+        "issn",
+        "ean",
+        "isin",
+        "lei",
+        "imo",
+        "luhn",
+        "au_abn",
+        "br_cnpj",
+        "br_cpf",
+        "ca_bn",
+        "ch_uid",
+        "de_idnr",
+        "es_nif",
+        "fr_siren",
+        "fr_siret",
+        "gb_vat",
+        "in_pan",
+        "mx_rfc",
+        "nl_bsn",
+        "us_ein",
+        null
+      ],
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "label": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "note": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "reason": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "source": {
+      "properties": {
+        "library": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "license": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "url": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "valid": {
+      "type": [
+        "boolean",
+        "null"
+      ]
+    }
+  },
+  "type": "object"
+}

First observedOct 8, 2026

TDQS

Score is being calculated.

All Tanod Finance tools Inspect

Try in Browser

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Glama MCP Gateway

Add one secure layer between your agents and this server.

Resources

Need Help?