Skills de Caffeinelabs

Use the `googlemail-client` mops package whenever the user asks the canister to send email, compose a draft, list or read Gmail messages, or fetch the authenticated user's Gmail profile. The package wraps the Gmail REST API v1 at `https://gmail.googleapis.com` via outbound HTTPS calls.

Authorization system with role-based access control. Must-have for all apps that manage personal or access-restricted data.

Web-camera support.

Core infrastructure providing backend connection configuration, storage client, and React app entry point.

Admin-only paginated viewer for stable canister state. Use whenever the user asks for a viewer, dashboard, debug panel, or admin browse over backend data — users, items, orders, logs, or any stable Map/Set/Array/VarArray/List/Stack/Queue. Pre-installed in every Caffeine app via the `caffeineai-data-viewer` mops package; this skill explains what it does and how to keep using it correctly.

Support for sending service/transactional emails. Don't use this for sending marketing emails or verification emails.

Support for organising events/meetings and sending invitations by email.

Send personalised marketing emails to subscribers with an unsubscribe link.

Send an email with multiple to, cc and bcc addresses.

Support for sending an email with a link the recipient can click to prove they own the email address.

HTTP outcalls performed by the backend canister (not in the frontend).

Requests invite-link / RSVP based access where guests can submit responses without login while admin can view responses with login.

General file/object storage, such as for images, videos, files, documents and other bulk data. Perfect fit for image galleries, video galleries, and other file or object management. Supports large files beyond IC limit, with browser-cached HTTP URL access.

MANDATORY recipe for every Caffeine build that calls OpenAI (ChatGPT, GPT-4o, an LLM, a chatbot, embeddings). The ONLY supported path is the `openai-client` mops package with a canister-side API-key bearer. Hand-rolling `ic.http_request` to `api.openai.com/v1/...` is a FORBIDDEN anti-pattern — it leaks the bearer across replicated outcalls (security + 13× billing impact), bypasses the typed request/response bindings, and forces hand-rolled JSON on a language with poor JSON support. Load this...

Make a canister's data queryable by the Caffeine Data Intelligence agent. Use whenever an app stores structured data (Maps/Lists/arrays of records) that should be answerable in natural language — "top customers", "revenue by region", "active projects". Adds a discoverable `schema()` and a JSON `execute()` query endpoint via the `caffeineai-oql` mops package's `Expose` mixin.

MANDATORY recipe for every Caffeine build that posts to X (Twitter). The ONLY supported path is the `x-client` mops package with OAuth 2.0 PKCE. Hand-rolling `ic.http_request` or `icBooking.http_request` calls to `api.x.com/2/tweets`, `api.x.com/2/oauth2/token`, or any other X endpoint is a FORBIDDEN anti-pattern — it bypasses bearer auth, replication-cost safeguards, and `x-client`'s null-field handling. Load this skill whenever the user, spec, or any prior task mentions tweeting,...

QR code scanner using the camera.

Quick reference for the Caffeine Data Intelligence agent to query an OQL-exposing canister (schema() + execute()) through the `icp` CLI against the project's `backend` canister: read the schema, form JSON queries (filter / order / paginate / aggregate / dotted-path edges), and parse the Candid result rows.

Payment support based on Stripe, supporting credit cards and debit cards

Approval-based user management.