JWT Decoder (Claims and Expiry, No Signature Check)

omnial/jwt-claims-decode

Decodes a JSON Web Token without verifying its signature. Returns the header's algorithm and type, the subject and audience, when it was issued and when it expires, whether it has expired and the seconds left, and the names of the claims in its payload.

activeper callv1

Price

Up to $0.0325 per call; you pay what the call used

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $5.

Data source

Omnial

Computed by Omnial from the inputs you provide.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

Connect once and your AI can find and run this tool, and any other it needs.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "omnial/jwt-claims-decode" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "omnial/jwt-claims-decode" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "omnial/jwt-claims-decode", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "omnial/jwt-claims-decode", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0325

Updated: Oct 18, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "token"
  ],
  "properties": {
    "token": {
      "type": "string",
      "maxLength": 16384,
      "description": "The JWT to decode: three base64url parts joined by dots (header.payload.signature)."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "properties": {
    "claims": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Names of the claims in the payload, in token order."
    },
    "header": {
      "type": "object",
      "properties": {
        "alg": {
          "type": "string",
          "description": "Signing algorithm named in the header."
        },
        "typ": {
          "type": "string",
          "description": "Token type named in the header."
        }
      },
      "description": "The token's header."
    },
    "subject": {
      "type": [
        "string",
        "null"
      ],
      "description": "The `sub` claim, or null."
    },
    "audience": {
      "type": [
        "string",
        "null"
      ],
      "description": "The `aud` claim, or null."
    },
    "algorithm": {
      "type": "string",
      "description": "Signing algorithm, e.g. HS256."
    },
    "issued_at": {
      "type": [
        "string",
        "null"
      ],
      "description": "The `iat` claim as an ISO 8601 date-time, or null."
    },
    "expires_at": {
      "type": [
        "string",
        "null"
      ],
      "description": "The `exp` claim as an ISO 8601 date-time, or null when the token has none."
    },
    "is_expired": {
      "type": [
        "boolean",
        "null"
      ],
      "description": "Whether `exp` is in the past; null when the token has no `exp`."
    },
    "token_type": {
      "type": "string",
      "description": "Token type, e.g. JWT."
    },
    "time_until_expiry_seconds": {
      "type": [
        "number",
        "null"
      ],
      "description": "Seconds until `exp` (negative once expired); null when the token has no `exp`."
    }
  },
  "description": "The decoded token. The signature is not checked."
}