feat(platform): paginate /platform/external-accounts

[bsiaotickchong]

Summary

Brings cursor pagination to GET /platform/external-accounts, matching what /customers/external-accounts already does.

• Adds limit (default 20, max 100) and cursor query params
• Extends PlatformExternalAccountListResponse with hasMore, nextCursor, totalCount
• Drops the `paginated: false` override in Stainless config so the generated SDKs expose the standard auto-paginating list helper for this endpoint

Why

The dashboard recipient picker on the platform-payout flow loads recipients via this endpoint and is currently capped at whatever the unpaginated handler returns. The customer-flow recipient picker already paginates (paired with webdev#26819) — this brings parity to the platform flow.

Test plan

• `make build` — bundle succeeds
• `make lint` — Redocly validates clean (16 pre-existing warnings, no new ones; spectral step fails locally with `command not found` independent of this change)
• Verify Mintlify API reference page picks up new params after merge
• Verify Stainless regenerates the platform external accounts list helper as a paginating method
• webdev PR #26819 wires the consumer side (Python SDK + sparkcore handler)

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Project	Deployment	Actions	Updated (UTC)
grid-flow-builder	Ready	Preview, Comment	Apr 28, 2026 10:04pm

[github-actions]

✱ Stainless preview builds

This PR will update the grid SDKs with the following commit messages.

kotlin

feat(api): add pagination to external accounts list method

openapi

feat(api): add pagination parameters and fields to external accounts list

python

feat(api): add pagination support to external_accounts list method

typescript

feat(api): add pagination to platform.externalAccounts.list

✅ grid-openapi studio · code

Your SDK build had at least one "note" diagnostic.
generate ✅

✅ grid-typescript studio · code

Your SDK build had at least one "note" diagnostic.
generate ✅ → build ✅ → lint ✅ → test ✅

npm install https://pkg.stainless.com/s/grid-typescript/9bf7e0eaf009aa3ac5e3eb2872190020a332a46e/dist.tar.gz

✅ grid-python studio · code

Your SDK build had at least one "note" diagnostic.
generate ✅ → build ✅ → lint ✅ → test ✅

pip install https://pkg.stainless.com/s/grid-python/0ab2c22cad367fb30db0b2c1ab1ffead0b47c339/grid-0.0.1-py3-none-any.whl

✅ grid-kotlin studio · code

Your SDK build had at least one "note" diagnostic.
generate ✅ → build ✅ → lint ✅ → test ✅

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Last updated: 2026-04-28 22:31:23 UTC

[greptile-apps]

Greptile Summary

This PR adds cursor pagination (limit and cursor params) to GET /platform/external-accounts, deletes the now-redundant PlatformExternalAccountListResponse schema in favour of reusing ExternalAccountListResponse, and removes the paginated: false Stainless override so the SDK generates a standard auto-paginating list helper — bringing this endpoint to parity with /customers/external-accounts.

Confidence Score: 5/5

Safe to merge — clean, targeted spec change with no logic errors or breaking issues.

All changes are additive (new query params are optional, default behaviour preserved), the schema deletion is intentional and the replacement is structurally compatible, and the Stainless config change is correct. No P0/P1 findings.

No files require special attention.

Important Files Changed

Filename	Overview
openapi/paths/platform/platform_external_accounts.yaml	Adds limit and cursor query params; response schema changed to reuse ExternalAccountListResponse. Clean parity with the customer endpoint.
openapi/components/schemas/external_accounts/PlatformExternalAccountListResponse.yaml	Deleted — superseded by the shared ExternalAccountListResponse schema, addressing the duplicate-schema concern from prior review.
.stainless/stainless.yml	Removes paginated: false override so the generated SDK exposes a standard auto-paginating list helper for this endpoint.
openapi.yaml	Generated bundle correctly reflects source changes: pagination params added, schema ref updated, PlatformExternalAccountListResponse removed.
mintlify/openapi.yaml	Generated Mintlify bundle reflects same changes as root openapi.yaml.

Sequence Diagram

sequenceDiagram
    participant Client
    participant API as GET /platform/external-accounts
    participant Schema as ExternalAccountListResponse

    Client->>API: ?limit=20&cursor=&currency=...
    API-->>Client: { data[], hasMore, nextCursor, totalCount }
    Note over Client,Schema: Response now uses shared ExternalAccountListResponse

    Client->>API: ?limit=20&cursor=<nextCursor>
    API-->>Client: { data[], hasMore: false, totalCount }

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_{Reviews (2): Last reviewed commit: "refactor: drop PlatformExternalAccountLi..." | Re-trigger Greptile}

[bsiaotickchong]

@greptileai