Head to head
X402lint vs Blackwall X402 Guardrail
Same numbers we show everywhere else, lined up. Ratings come from users, the grade comes from our scanner, adoption comes from public registries.
X402lint
Aio.github.arden-instance/x402lintNo reviews yet
Lint an HTTP endpoint's x402 402 conformance; decode X-PAYMENT blobs; inspect a facilitator.
Full listingNo reviews yet
Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt.
Full listingThe short version
Neither has been reviewed yet, so the comparison rests on the scan and the public usage numbers. Both score close on the safety scan (89 and 87 out of 100). Blackwall X402 Guardrail is hosted and callable through the gateway; X402lint runs on your own machine.
| X402lint | Blackwall X402 Guardrail | |
|---|---|---|
| User rating | No reviews yet | No reviews yet |
| Safety grade | A89/100 | A87/100 |
| Adoption | Growing | Growing |
| GitHub stars | 0 | 0 |
| Downloads / week | 78 | – |
| Runs where | Your machine (local) | Hosted (remote) |
| Gateway-ready | No | Yes |
| Tools | 3 | 1 |
| Write actions | — | — |
| Price per call | Free | Free |
| Licence | MIT | — |
| Last release | 2026-09-06 | 2026-08-25 |
| Category | Finance | Finance |