Discover / jwt.openverbs.com

Sign a JWT

■ Challenge detected

Mint a signed JSON Web Token from a JSON claims object, using a shared secret (HS*) or a PEM private key (RS/ES/PS). Supports expiresInSec, notBeforeSec, issuer, audience, subject and keyid. An unusable key or option is rejected before payment.

x402
Base
USDC

Listed price: $0.004
Challenge detected: 9 of the last 9 checks
Median response: 190 ms
Last checked: 16 Oct, 18:49 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://jwt.openverbs.com/v1/sign
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

3 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://jwt.openverbs.com/v1

POST/sign$0.004Mint a signed JSON Web Token from a JSON claims object, using a shared secret (HS*) or a PEM private key (RS/ES/PS). Supports expiresInSec, notBeforeSec, issuer, audience, subject and keyid. An unusable key or option is rejected before payment.
POST/verify$0.004Verify a JSON Web Token's signature and claims against a shared secret (HS*) or a PEM public key (RS/ES/PS). Returns { valid, payload } on success or { valid: false, reason } for a bad signature, expired/not-yet-active token, or a failed issuer/audience/subject check. Pass `algorithms` to pin the accepted signing algorithms and prevent algorithm-confusion attacks.
POST/decode$0.004Decode a JSON Web Token WITHOUT verifying its signature and return the header, payload and signature. A structurally malformed token is rejected before payment. Never trust a decoded payload you have not verified.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 3 of 3 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/jwt.openverbs.com

Recent checks

30 Sept 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026

All 9 checks

When (UTC)	Result	HTTP	Response
16 Oct, 18:49 UTC	Challenge detected	402	195ms
15 Oct, 11:37 UTC	Challenge detected	402	192ms
14 Oct, 00:19 UTC	Challenge detected	402	190ms
11 Oct, 22:04 UTC	Challenge detected	402	176ms
10 Oct, 06:39 UTC	Challenge detected	402	176ms
9 Oct, 03:33 UTC	Challenge detected	402	244ms
7 Oct, 21:31 UTC	Challenge detected	402	185ms
6 Oct, 18:37 UTC	Challenge detected	402	220ms
30 Sept, 17:04 UTC	Challenge detected	402	186ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 18:49 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for Sign a JWT?

Its listed price is $0.004.

What payment terms does Sign a JWT advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is Sign a JWT listed?

In x402 Bazaar. Superstables first indexed it on 26 Sept 2026.

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