
mdoc and SD-JWT Decoder for EUDI Wallets
Inspect mdoc and SD-JWT credentials in your browser
What it does
Two free, browser-based decoders for EUDI Wallet and EU Business Wallet developers: • mdoc CBOR Decoder (new): Inspect ISO/IEC 18013-5 IssuerSigned structures: COSE_Sign1 issuer authentication, the Mobile Security Object, namespaces, and x5chain certificates. • JWT / SD-JWT Decoder (enhanced): Parse headers, payloads, signatures, SD-JWT disclosures, and key-binding JWTs. Issuer keys auto-derived from x5c, jwk, did:key, or did:jwk for one-click verification.
Does the same job
all alternatives →- JIJwt.is – JSON Web Token Debugger2023 · ▲38
The team at Rownd is excited to announce https://jwt.is, an updated take on JSON Web Token debugging. Like most developers, we've used jwt.io for years, but it lacks a number of useful features that would make it even more convenient. We're building on the shoulders of those who've come before us. :-) In addition to the basic JWT decoding and signature verification, we've added things like: - Verification using JWK endpoints - Locally stored history of tokens and keys - Verification for EdDSA signatures - Detection of common token providers (e.g., Google, Apple, etc) - Dark mode!…

- PDPrefixed, dual-token, base58 encoded API Keys2022 · github.com · ▲100



More dev tools this month
the category →



The first open-source price index for GPU compute
Dev tools · 10d ago · getcomputable.com

OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 2d ago · opentrailpaper.com

Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
Launched alongside, May 2026
the whole month →

Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai


- NW
Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
Life & fun · May 2026 · github.com
- FM
Dev tools · May 2026 · github.com