feat(x402): attach BlockRun builder-code service code to payments#9
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KillerQueen-Z wants to merge 1 commit into
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feat(x402): attach BlockRun builder-code service code to payments#9KillerQueen-Z wants to merge 1 commit into
KillerQueen-Z wants to merge 1 commit into
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Tag every x402 payment this SDK signs with the ERC-8021 Schema 2 service code s: ["blockrun"] so BlockRun-originated traffic is attributed on-chain. Merged into builder-code.info.s in both the EVM and Solana payload builders, preserving any app code (a) the server echoes back in its 402. Encoding into settlement calldata is handled by the CDP facilitator; the client only sets the JSON field, so no new dependency or CBOR is required. Docs: https://docs.cdp.coinbase.com/x402/core-concepts/builder-codes
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What
Tags every x402 payment this SDK signs with the ERC-8021 Schema 2 service code
s: ["blockrun"], so payments originated through BlockRun's client SDK are attributed to BlockRun on-chain.Reference: CDP Builder Codes
How
withBuilderCodeServiceCode()mergess: ["blockrun"]into the payload'sbuilder-code.info, preserving any app code (a) the server echoes back in its 402 response (so we never clobber seller attribution).createPaymentPayload) and Solana (createSolanaPaymentPayload).BLOCKRUN_SERVICE_CODEfor reuse.Why this is all the client needs
The CBOR / ERC-8021 calldata encoding is done by the CDP facilitator at settlement time (it reads
builder-code.info.sfrom the payment payload). The client only sets a JSON field — so this needs no new dependency, no@x402/extensions, no CBOR and works unconditionally on every payment.Scope / inheritance
This SDK (
@blockrun/llm) is the payment layer for@blockrun/mcp,@blockrun/clawrouter-codex, and other TS consumers — they inherit this attribution automatically once they bump to the released version.Buyer-side only. Seller-side app code (
a) on the gateway is tracked separately (needs a registered code from dashboard.base.org).Test
test/unit/x402.test.ts: service code is always attached; server-echoedais preserved whensis added.