10x402 / guides

Field manuals

Written from operating x402 endpoints and the checks built out of what broke. Everything claimed is sourced; nothing is promised.

• Your x402 endpoint settles payments but never appears in the Bazaar

  Why a working x402 endpoint stays invisible in CDP Bazaar discovery: rows are written by settlement, rejections are silent, and the blockers live in the 402 you already serve. A field manual with the fix ladder.

• The wrong-bag contradiction: when your Bazaar example and schema disagree

  A census of the live x402 catalog found 276 listings whose worked example puts a required parameter in a different bag than their own schema requires. Both consumers of the declaration lose, no probe can arbitrate, and the fix is one move.

• The x402 registry coverage playbook: Bazaar, x402scan, and the chain

  What actually writes each x402 registry, how to verify every listing by hand for free, and the one habit that keeps a seller visible: settle one call per resource and check the coverage after every change.