Make x402 identity follow the public resource - #1491
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| reason = "This tool costs credits. Sign in, or send a token from /token as " + | ||
| "'Authorization: Bearer' — see /tools. Machine callers can pay per call " + | ||
| "with an X-PAYMENT header instead; see accepts." | ||
| reason = "Payment required. Choose an entry from accepts, submit payment, and retry." |
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When an anonymous or invalid-token caller reaches a metered /mcp operation on the normal Mu surface, payer supplies an empty reason, so this becomes the only guidance returned and removes the existing sign-in/Bearer-token alternatives for callers who do not want to make an x402 payment. Because the same function serves both the alternate M3O surface and the regular Mu endpoint, this also deterministically breaks TestAChallengeSaysWhyThisCallerWasRefused in internal/x402/reason_test.go; select the protocol-only wording for the alternate surface without deleting the standard Mu access paths.
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Why
M3O fronts the same MCP endpoint as a machine-facing public surface. The resource URL now correctly preserves
m3o.com, but x402 still identified the service as the configured Mu domain and returned account-centric guidance about signing in,/token, and/tools.What
serviceNamefrom the public resource URL, sohttps://m3o.com/mcpadvertisesm3o.comNo M3O-specific domain is hard-coded.