feat: add optional referrer to TransferMetadata - #566
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Optional because Solana swap transfers store the zero address and legacy transfer documents may not carry the field at all. Claude-Session: https://claude.ai/code/session_014TsG1HvsSBcd3RkJPZun9j
The field is address-shaped only on bridge transfers; generic swaps carry an opaque integrator-supplied string, and it is absent when the transfer recorded no referrer. Claude-Session: https://claude.ai/code/session_014TsG1HvsSBcd3RkJPZun9j
The neighbouring integrator field carries no comment; the doc block was out of step with the density of the surrounding types. Claude-Session: https://claude.ai/code/session_014TsG1HvsSBcd3RkJPZun9j
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August 18, 2026 14:59
nd-roy
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August 26, 2026 17:15
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What
Adds an optional
referrertoTransferMetadata, so the field can be surfaced in themetadataobject returned by/v1/status,/v1/analytics/transfersand/v2/analytics/transfers.Why
Integrators already pass
referreron/quoteand it is persisted on every transfer, but the read endpoints only ever returnedintegrator. A partner asked for it back on the read side.referreris not new public data: it is emitted on-chain in theLiFiTransferStartedevent on every transfer, so exposing it in read responses reveals nothing that is not already visible on a block explorer.Why optional
Two cases can leave it absent, so a required field would be a lie:
metadatawithlodash.pick, which simply drops missing keys.Consumer
Backend side is lifinance/lifi-backend#8813.
Note for whoever releases this: the backend catalog currently pins
18.3.0-beta.0, which was published fromfeat/gasless-quote-surface-typesand is not onmain. This branch is based onmainand deliberately does not carry those commits, so a release that reaches the backend needs to include both.Linear: https://linear.app/lifi-linear/issue/CORE-779/expose-referrer-in-transfer-metadata-on-status-and-analytics-read
https://claude.ai/code/session_014TsG1HvsSBcd3RkJPZun9j