docs(Projects.md): add x402-idempotency - #111
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michielpost merged 1 commit intoSep 28, 2026
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Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Adds x402-idempotency to x402 Developer Tools & SDKs, in alphabetical position.
It is a server-side implementation of the
payment-identifierextension for resource servers: a retried request returns the original response and receipt instead of charging again, and reusing an id with a different request is rejected. It registers as an@x402/coreextension or wraps any x402 server as Node/fetch middleware. TypeScript, zero runtime dependencies, MIT.One line added, no other changes. Published on npm as
x402-idempotency.🤖 Generated with Claude Code