docs: document remittanceInformation field for transfer-out

[claude]

Summary

• Added documentation for the new remittanceInformation field in transfer-out requests (from commit 1f9ca02)
• Updated curl examples in transfer-out documentation to show the field
• Updated Grid Visualizer code generator to include the field in generated API calls

Changes

Mintlify docs:

• mintlify/snippets/sending/same-currency.mdx - Added example and Info block
• mintlify/payouts-and-b2b/payment-flow/send-payment.mdx - Added example and Info block

Grid Visualizer:

• components/grid-visualizer/src/lib/code-generator.ts - Added field to transfer-out body with note

Context

The remittanceInformation field (max 80 chars) allows senders to include a reference that travels with the payment to the recipient. Depending on the payment rail:

• ACH: Populates the Addenda record
• FedNow/RTP: Populates the remittanceInformation field
• Wire: Populates the OBI (Originator to Beneficiary Information)

Test plan

• make lint-openapi passes
• Review curl examples render correctly in Mintlify

🤖 Generated with Claude Code

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[greptile-apps]

Greptile Summary

This PR adds documentation for the remittanceInformation field on transfer-out requests, covering all three payment rails (ACH, FedNow/RTP, and Wire) and updating both the full docs page and the reusable snippet.

• Mintlify docs (send-payment.mdx and same-currency.mdx): The curl examples now include remittanceInformation: "INV-12345" and both files add an <Info> callout that correctly states the field is optional, describes the max-80-char constraint, and explains the rail-specific behavior.
• Grid Visualizer code generator (code-generator.ts): The generated transfer-out body now includes the field with an expanded note explaining its optionality and purpose.

Confidence Score: 5/5

Pure documentation update with no runtime logic changes — safe to merge.

All three files contain only documentation content: MDX prose, a curl example, and a string note in a code generator. The Info callouts correctly and consistently describe the field as optional with the 80-char constraint and rail-specific behavior. No API contract, schema, or executable logic is changed.

No files require special attention.

Important Files Changed

Filename	Overview
mintlify/payouts-and-b2b/payment-flow/send-payment.mdx	Adds remittanceInformation to the same-currency curl example and a correctly-worded <Info> callout; leaves double blank line before the success JSON block (minor).
mintlify/snippets/sending/same-currency.mdx	Parallel update to the snippet used by other pages; curl example and Info callout are consistent with the main send-payment page.
components/grid-visualizer/src/lib/code-generator.ts	Adds remittanceInformation: 'INV-12345' to the generated transfer-out body and expands the note to communicate optionality and the 80-char limit; change is minimal and correct.

Sequence Diagram

%%{init: {'theme': 'neutral'}}%%
sequenceDiagram
    participant Client
    participant Grid API
    participant Payment Rail

    Client->>Grid API: POST /transfer-out\n{ source, destination, amount,\n  remittanceInformation: "INV-12345" }
    Grid API-->>Client: 201 Created (status: PENDING)

    Grid API->>Payment Rail: Route payment\n(ACH Addenda / FedNow-RTP remittance / Wire OBI)
    Payment Rail-->>Grid API: Settlement confirmation

    Grid API-->>Client: Webhook: OUTGOING_PAYMENT.COMPLETED

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%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
sequenceDiagram
    participant Client
    participant Grid API
    participant Payment Rail

    Client->>Grid API: POST /transfer-out\n{ source, destination, amount,\n  remittanceInformation: "INV-12345" }
    Grid API-->>Client: 201 Created (status: PENDING)

    Grid API->>Payment Rail: Route payment\n(ACH Addenda / FedNow-RTP remittance / Wire OBI)
    Payment Rail-->>Grid API: Settlement confirmation

    Grid API-->>Client: Webhook: OUTGOING_PAYMENT.COMPLETED

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_{Reviews (2): Last reviewed commit: "docs: mark remittanceInformation as opti..." | Re-trigger Greptile}