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Add Slash as the bank for nibblets' virtual cards - #26
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added this pull request to stack #29
October 19, 2026 15:34
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`@nibblet/bank-slash` issues USD virtual cards on the person's Slash account: `isSingleUse` cards, which Slash closes after one authorisation, and ones for several purchases, each with a collective (never resetting) utilisation limit of the card's limit, so Slash itself declines anything over it. It reports spending from the card's utilisation, finds a card an interrupted issue made by the id it tags it with, and shows the account's balance in Settings. It turns on with `SLASH_API_KEY` (optionally `SLASH_ACCOUNT_ID`), passed to the server by compose. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01KGXXQcj3hZN2jiB6As6kk5
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Part 3 of 7 in the bank stack, on #25.
What this adds
@nibblet/bank-slashissues USD virtual cards on your Slash account.isSingleUse, which Slash closes after the first authorisation. Multi-use cards stay open until killed.collectiveutilisation limit (one that never resets) of the card's limit, so Slash itself declines anything over it.GET /card/{id}?include_pan=true&include_cvv=true.GET /card/{id}/utilization.PATCH status: "closed".userData, sofindcan recognise a card made by an issue that timed out.SLASH_API_KEY(cards.view and cards.manage), plus optionalSLASH_ACCOUNT_ID(the account to make cards under, and whose balance Settings shows) andSLASH_BASE_URL. Compose passes them to the server. Set banks up from Settings, with forms their plugins describe #31 (part 6) moves these settings into a form in Settings → Bank; the environment stays as a fallback.The endpoint and field names come from Slash's official TypeScript SDK (
slash-sdk, generated from their OpenAPI spec). I couldn't reach Slash's docs or API from the build environment, so this hasn't been run against a real Slash account. Worth a try with a test card before relying on it.Screenshots
From #28's UI, in the mock server (
?mock=1): Slash in Settings → Bank with its account balance, and a Slash card on a nibblet.Checks
pnpm format:check,pnpm -r typecheckandpnpm testpass on this branch on its own.Generated by Claude Code