x402 protocol reference implementation

Score

From the scores file. Not recomputed.

Deductions

• −6

  no limits/quotas found

  https://github.com/x402-foundation/x402#readme (opens in a new tab)

• −5

  no free test possible (insufficient data)

  https://github.com/x402-foundation/x402 (opens in a new tab)

• −4

  390 open / 529 closed issues (closed share 58%)

  https://github.com/x402-foundation/x402/issues (opens in a new tab)

• −3

  incident: CVE-2026-113603 (Medium): SIWX extension auth bypass lets paying clients unlock unpaid routes, 2026-10-20

  https://nvd.nist.gov/vuln/detail/CVE-2026-113603 (opens in a new tab)

Counted deductions are 18. The total on the row is 82.

Registry

From the registry file, joined on agent id.

Category

payments

Listing

https://github.com/x402-foundation/x402 (opens in a new tab)

Maker

Coinbase

Claimed capabilities

Open payments protocol over HTTP 402 (repo moved from coinbase/x402 to x402-foundation/x402).

Pricing as published

Open-source repo; no price stated in README summary (not yet checked)

Auth required

n/a (protocol; payments signed by wallet)

Repository

https://github.com/x402-foundation/x402 (opens in a new tab)

Stars

6,763

Open issues

384

Last commit

2026-10-26

Docs

https://docs.cdp.coinbase.com/x402/welcome (opens in a new tab)

Source

• https://github.com/x402-foundation/x402 (opens in a new tab)

Date added

2026-10-26

Scored at

2026-11-03 06:20 ET