utilpeek (Tanod) JWT verifier
utilpeek (Tanod) JWT verifier: signature, expiry, audience and issuer checks with a secret, PEM key or JWK Set. Use when an agent must check a JWT's signature and exp, aud and iss with a secret, a PEM key or a JWK Set.
Answeringour last check, 2026-10-10
1 of 1checks answered this week
217 msmedian answer time
$0.001listed price per call
$0.001price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://tanod.dev/v1/jwt/verify
| Category | Everything else |
|---|---|
| Provider host | tanod.dev |
| Networks | eip155:137, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.001 | 217 ms |
Example input (from the provider)
{
"body": {
"algorithms": [
"HS256"
],
"audience": "my-api",
"issuer": "https://issuer.example",
"leeway_seconds": 30,
"secret": "example-secret-0123456789-abcdefghij",
"token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyLTEiLCJpc3MiOiJodHRwczovL2lzc3Vlci5leGFtcGxlIiwiYXVkIjoibXktYXBpIn0.Bs7wb0VmtI_D9e_qlTg31APe-kCTDCuSKUIuEPRf3BY"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"algorithms": {
"anyOf": [
{
"items": {
"type": "string"
},
"maxItems": 8,
"minItems": 1,
"type": "array"
},
{
"type": "null"
}
],
"default": null,
"description": "Allow-list that narrows the default for the key type; none is refused."
},
"audience": {
"anyOf": [
{
"type": "string"
},
{
"items": {
"type": "string"
},
"type": "array"
},
{
"type": "null"
}
],
"default": null,
"description": "Required aud (a string, or a list of which one must match)."
},
"issuer": {
"anyOf": [
{
"maxLength": 2048,
"minLength": 1,
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Required iss."
},
"jwks": {
"anyOf": [
{
"additionalProperties": true,
"type": "object"
},
{
"type": "null"
}
],
"default": null,
"description": "JWK Set object {\"keys\": [...]} (asymmetric keys; oct keys are ignored). The key is picked by the token kid."
},
"leeway_seconds": {
"default": 0,
"description": "Clock skew allowed for exp, nbf and iat (0-300).",
"maximum": 300,
"minimum": 0,
"type": "integer"
},
"public_key": {
"anyOf": [
{
"maxLength": 12000,
"minLength": 1,
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "PEM public key (RS*, PS*, ES*, EdDSA)."
},
"secret": {
"anyOf": [
{
"maxLength": 4096,
"minLength": 1,
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "HMAC secret (HS256/384/512)."
},
"token": {
"description": "Compact JWT to verify.",
"maxLength": 16000,
"minLength": 1,
"type": "string"
}
},
"required": [
"token"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"alg": {
"type": [
"string",
"null"
]
},
"detail": {
"type": "string"
},
"header": {
"type": "object"
},
"key_source": {
"type": "string"
},
"kid": {
"type": [
"string",
"null"
]
},
"leeway_seconds": {
"type": "integer"
},
"note": {
"type": "string"
},
"payload": {
"type": "object"
},
"reason": {
"type": [
"string",
"null"
]
},
"valid": {
"type": "boolean"
}
},
"required": [
"valid",
"reason",
"alg",
"key_source",
"note"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}