Tanod Util

utilpeek: encode or decode text (base64, hex, URL, ..., JWT decode)

text_encode

Read-onlyIdempotent

utilpeek: Encode or decode text: base64, hex, URL, punycode, JWT decode, ... Returns the text encoded or decoded with codec: base64, base64url, base32, hex, url (percent), html (entities), quoted_printable, rot13, punycode, idna or jwt. Decoders are strict (bad input is a 422 decode_failed); bytes that are not UTF-8 come back as output_base64. Input: text, codec and optional direction. jwt is decode only: the header and payload are decoded and the signature is NEVER verified (every reply says signature_verified: false), so a decoded token proves nothing about who issued it; the token is never echoed back. Typically under 0.3 s. Price: USD 0.001. Free: 10 utilpeek calls per IP per UTC day. Tanod does not log or store the submitted text; it is processed in memory for this answer.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`text`	Yes	At most 100,000 characters; never logged; a JWT is never echoed back.
`codec`	Yes	base64, base64url, base32, hex, url, html, quoted_printable, rot13, punycode, idna or jwt (decode only; the signature is never verified).
`direction`	No	encode (default) or decode; jwt is decode only.	encode

Output Schema

TableJSON Schema

Name	Required	Description
`bytes`	No
`codec`	No
`error`	No	Only on an error result: an object {code, message}, or the reason string of an x402 PaymentRequired object.
`flags`	No
`binary`	No
`header`	No
`output`	No
`source`	No
`payload`	No
`warning`	No
`direction`	No
`output_base64`	No
`signature_verified`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 8, 2026

addedInput schema / properties / direction / description

Added value: +"encode (default) or decode; jwt is decode only."

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "binary": {
+      "type": [
+        "boolean",
+        "null"
+      ]
+    },
+    "bytes": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "codec": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "direction": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "error": {
+      "description": "Only on an error result: an object {code, message}, or the reason string of an x402 PaymentRequired object."
+    },
+    "flags": {
+      "type": [
+        "array",
+        "null"
+      ]
+    },
+    "header": {
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "output": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "output_base64": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "payload": {},
+    "signature_verified": {
+      "type": [
+        "boolean",
+        "null"
+      ]
+    },
+    "source": {
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "warning": {
+      "type": [
+        "string",
+        "null"
+      ]
+    }
+  },
+  "type": "object"
+}

First observedOct 8, 2026

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