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NetIntel JWT Inspector / Decoder
x402
NetIntel JWT Inspector / Decoder is a paid API for AI agents from netintel.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).
Decodes and security-audits a JWT token, returning parsed header/payload fields, expiry status, a security grade, and detected security flags.
Price / call$0.005
Success—
StatusUnknown
How this service works
Decode and inspect any JWT token — extracts header algorithm, payload claims, expiry status, issued-at time, audience, issuer, and subject without requiring the secret — so agents can debug auth issues, check token expiry, and extract identity claims from tokens in pipelines.
Output
Returns a JSON object containing the decoded JWT header (algorithm, key ID, token type), decoded payload (issuer, subject, audience, issued-at, expiry, not-before, custom claims), a letter security grade (A–F), numeric score (0–100), boolean expiry and structural validity flags, human-readable expiry string, seconds until expiry, and arrays of findings and security flags.
Example use cases
Example prompt
“Can you decode and security-audit this JWT for me and tell me the algorithm, what claims it contains, when it expires, and what security grade it gets: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyX2FiYzEyMyIsImF1ZCI6Imh0dHBzOi8vYXBpLmV4YW1wbGUuY29tIn0.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c”
Technical details
Endpoint
GEThttps://netintel.dev/jwt-inspector/decode?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to quickly decode, inspect, and security-grade a JWT without a full auth library — especially useful for debugging tokens in transit, auditing third-party JWTs, or checking expiry and claims in an automated pipeline. Prefer it over manual base64 decoding when you also want a security assessment and structured findings.
Side effects
- Missing or malformed token query param returns error
- Token with fewer or more than 3 dot-separated segments fails structural validation
- Non-JWT strings or empty token values return parsing error
- Network or payment failure (x402 USDC micropayment not completed) results in 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"grade": "B",
"score": 80,
"header": {
"key_id": null,
"algorithm": "HS256",
"token_type": "JWT"
},
"payload": {
"issuer": null,
"jwt_id": null,
"subject": "1234567890",
"audience": null,
"issued_at": "2018-01-18T01:30:22.000Z",
"expires_at": null,
"not_before": null,
"custom_claims": {
"name": "John Doe"
},
"issued_at_unix": 1516239022,
"expires_at_unix": null
},
"findings": [
{
"rule": "no_expiry_claim",
"label": "No expiry claim",
"detail": "JWT has no exp claim — token never expires",
"impact": -20
}
],
"is_expired": null,
"human_expiry": null,
"signature_hex": "49f94ac7044948c78a285d904f87f0a4c7897f7e8f3a4eb2255fda750b2cc397",
"security_flags": [
"no_expiry"
],
"valid_structure": true,
"signature_present": true,
"seconds_until_expiry": null
}
}Tags
x402
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