feat(x402): settle chat at the actual cost on Base with upto (Permit2) - #75

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VickyXAI wants to merge 7 commits into

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feat/x402-upto-permit2

Commits on Sep 30, 2026

feat(x402): pay the actual cost on Base with upto (Permit2), never worse than exact
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af9cdb4
fix(x402): claim the permit slot before the chain read, so concurrent calls sign one permit
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0fc4707

Commits on Oct 2, 2026

Merge remote-tracking branch 'origin/main' into feat/x402-upto-permit2
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11ce513
fix(x402): never pay exact after a replayed upto, refuse upto-only 402s, book stream ceilings

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claude
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628c730
fix(llama-index): surface upto cost_is_ceiling, so a ceiling is never reported as a charge

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claude
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ec15419
docs(x402): upto settles the actual cost, which can exceed the exact quote; note per-process guards

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claude
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2b20d6b
fix(x402): never pay exact after PAYMENT_REPLAY; refuse upto-only 402s in the shared signer
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e0b4320