{"id":"pay.builder.attribution.v2","title":"Counted payments carrying an app's Builder Code","unit":"USD / codes / share","chain_set":"eip155:8453 (Base)","window":"all time; transactions are read once","definition":"Counted payments whose transaction carries an ERC-8021 Builder Code: a suffix appended to the calldata by the app, wallet or agent framework that built the transaction. Reported as the USD attributed, the number of distinct codes, and the largest code's share of attributed USD.","method":"The transaction input is read from the public Base RPC and its ERC-8021 suffix parsed. Schema 0 carries comma-separated ASCII codes; schema 1 adds a custom registry; schema 2 is a CBOR map, shown as the app code followed by \"w:<wallet code>\" and \"s:<service code>\" (x402 payments settled by Coinbase's facilitator carry the wallet code cdp_facil1). A smart account (ERC-4337) carries the suffix at the end of its user operation's calldata, inside the bundle, and is read there. Codes are registered in the Base Builder Codes registry (0x000000BC7E6457e610fe52Dcc0ca5b3ce59C8E80).","excludes":["Transactions not yet read (reported as pending in the note).","Suffixes whose schema the ERC does not define, which are counted as \"schema:N\" but not decoded."],"does_not_assert":["Who operates an app: a code names an app that attributed itself, and its registered metadata is usually private.","That payments without a code were not made through an app."],"source":"AFG-Pulse investigations (transaction input)","since":"2026-10-13","supersedes":"pay.builder.attribution.v1","note":"Every counted payment read under v1 was read again with this parser on 13 October 2026; see /api/changepoints cp-2026-10-13-builder-parser for the counts before and after.","revisions":[],"body_sha256":"b18563a409a345d6ce4320590bea4df6eb47dcfdf714c60b2e1c20b355a6bf45","url":"https://agenticfinancegraph.com/def/pay.builder.attribution.v2","ladder":"https://agenticfinancegraph.com/ai-agent-liveness-methodology-l0-l9-ladder","license":"https://creativecommons.org/licenses/by/4.0/","attribution":"Agentic Finance Graph — https://agenticfinancegraph.com"}