convex/convex-backend-skill

Dernière activité source enregistrée: 29 octobre 2026 à 18:08

Catalogue SkillsMP mis à jour: 12 novembre 2026 à 12:52

skills collectés: 17

Étoiles GitHub: 6
Forks GitHub: 8

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# Convex Plugin for Claude Code Official Convex plugin for Claude Code. Bundles the Convex backend design skill, a live-scaffolding `quickstart` skill (`/quickstart`), the `convex-expert` subagent for code-writing, a runtime-error monitor, and the Convex MCP server for live deployment introspection — all in one install. When you ask Claude to build, design, or debug a backend, Claude reaches for Convex idioms and components (`@convex-dev/agent` for chat, Convex Auth instead of custom sessions, reactive queries instead of polling, the workflow component for durable retries) rather than generic "AI slop" patterns it would otherwise default to. ## Install From inside Claude Code: ``` /plugin install convex ``` Or install via the Anthropic plugin marketplace — search for **Convex**. Local development install: ```sh git clone https://github.com/convex/convex-backend-skill ~/.claude-plugins/convex-backend-skill claude --plugin-dir ~/.claude-plugins/convex-backend-skill ``` ## How to use Just describe what you want to build. Claude routes the request through this plugin automatically — you don't need to invoke anything explicitly. Plain-English product asks work as well as technical jargon. ### Plain-English asks (no backend knowledge required) ``` "I want to make an app where my friends can vote on movie nights." "Build me a website where people can sign up and share their workout routines." "Make a Tinder-for-X for finding board-game opponents in my city." "I want to track my clients and send them reminders before appointments." "Build me a multiplayer trivia game I can play with my coworkers." "I have an idea for an app — where do I start?" ``` ### Technical asks ``` "Build a real-time chat backend with rooms and message history." "Add sign-in to my Next.js app with OAuth and a thin users table." "Design a multi-tenant schema for a SaaS with workspaces and roles." "Create a scheduled job that retries on failure and survives crashes." "Wire up vector search over my docs for a RAG chatbot." "Build a backend for my Expo mobile app that connects language learners." ``` ### Pain-point asks (you're fighting a different stack) ``` "My cache keeps going stale after writes — what's a better model?" "I'm tired of fighting Row Level Security policies. Show me an alternative." "My ORM is generating N+1 queries; what would this look like done right?" "I keep forgetting to regenerate codegen between backend and frontend." "What's the simplest way to add real-time updates to my existing app?" ``` Claude will pick the right Convex primitive or component, scaffold the schema, write the queries/mutations/actions, and walk you through the result. ## What's bundled | Component | Purpose | | --- | --- | | **`design` skill** | Backend architecture, design thinking, anti-patterns, runtime-error decoder, proactive recommendations. Loaded into context whenever a backend ask is detected. | | **`quickstart` skill** (`/quickstart`) | Idea → running app in under a minute. Scaffolds a Next.js + shadcn "wow-shell" with a floating Chef panel (live progress feed, pulsing todo checklist, inline refinement questions, feature-request form), starts `convex dev` + `next dev` with error watchers armed, opens the browser, then builds the idea live. Hands `convex/` code to `convex-expert`. | | **`convex-expert` subagent** | Deep code-writing rules — object-form syntax, validator requirements, index naming, internal-vs-public, schema evolution, resource limits, component reflexes. Loaded only when delegated to, so the rules don't burn main-thread context. | | **Convex MCP server** | Live deployment introspection — `tables`, `function-spec`, `data`, `run-once-query`, `logs`, `env list/set/get`. Auto-wires via `npx convex mcp start` when the plugin is enabled. | | **Lint-on-save hook** | PreToolUse gate that blocks Convex anti-patterns _before they reach disk_ (and before `convex dev` can push them): `.filter(q => q.field(...))` on db queries and old positional function syntax are denied with the correct pattern in the message; missing `args`/`returns` validators surface as advisories. | | **End-of-turn verify hook** | Stop hook that enforces the "self-verify before you stop" rule: when a turn leaves uncommitted `convex/*.ts` changes, it runs `convex codegen`, `tsc --noEmit`, and — only when `.env.local` already names a `CONVEX_DEPLOYMENT` (never provisions one) — `convex dev --once`. Real errors block the stop (exit 2) so the agent fixes them before finishing; loop-guarded via `stop_hook_active`, with a hard ~90s budget that allows rather than wedges on timeout. | | **Runtime-error monitor** | Streams `npx convex logs` and surfaces matched errors (TS / schema validation / runtime exceptions / OCC conflicts) as Claude notifications, so you find out about server-side failures the moment they happen. Self-guards on unlinked projects. | | **OCC / insights monitor** | Polls `npx convex insights` every 10 minutes and notifies only on _new_ OCC conflicts or read-limit insights, with the fix playbook (shrink transactions, `@convex-dev/aggregate` for hot counters, `.withIndex()`/`.paginate()` for read limits). Cloud deployments with user-level auth only; silent otherwise. | | **Feature-request monitor** | During a `quickstart` build, watches the Chef panel's `featureRequests:listPending` and pushes a notification the moment the user submits a new request — even across turns — so the agent picks it up without babysitting a log. Notifies only on _new_ requests; works on local/anonymous deployments too. | ## Capabilities The plugin steers Claude toward the right Convex primitive for each task: | Need | What you get | | --- | --- | | Database + schema | Schema-first design with `defineSchema` + `defineTable`, end-to-end TypeScript types, indexes for every read path | | Real-time / multiplayer | Reactive `useQuery` over WebSockets — no separate real-time service to wire | | Auth | Convex Auth (zero-touch with password) or WorkOS AuthKit, plus a thin `users` table — no custom sessions/accounts tables | | File uploads | `ctx.storage` with signed upload URLs and `Id<"_storage">` references | | Background jobs | `ctx.scheduler` for one-offs, `crons.ts` for recurring, `@convex-dev/workflow` for durable multi-step flows | | Chat / LLM agents | `@convex-dev/agent` component — threads, history, tool calls, streaming, retries built in | | Vector / text search | `defineTable(...).vectorIndex(...)` and `.searchIndex(...)` — no separate vector DB to host | | Rate limiting | `@convex-dev/rate-limiter` component | | Mobile backends | First-class React Native client; same backend serves web, iOS, Android | ## Made by **Convex** — [convex.dev](https://convex.dev) — the open-source reactive database for fullstack apps. Issues and feature requests: [github.com/convex/convex-backend-skill/issues](https://github.com/convex/convex-backend-skill/issues). ## Privacy & data This plugin connects to Convex services and collects usage data. See the [Convex privacy policy](https://convex.dev/legal/privacy) for full details and your rights. Three kinds of data can leave your machine, each governed by a rule that holds no matter which command triggers it: ### 1. Usage telemetry (on by default, opt-out) Hooks may send telemetry to Convex's PostHog project: a random device id, the plugin version, your OS and Node.js version, which agent harness emitted the event (always `claude` for this plugin), and coarse event names (session start, lint/typecheck counts). Session-start events also carry two locally-derived fields: whether the working directory looks like a Convex project (a yes/no flag — the directory path itself is never sent) and how the session began (new / resumed / cleared / compacted). If the working directory has a `.env.local` or `.env` file with the `CONVEX_DEPLOYMENT` line the Convex CLI writes, session-start events also carry the Convex deployment name and team name from that line. Convex can use them to link plugin usage to your Convex team and account. Nothing else is read from those files. Never your code, file paths, prompts, or other values from your env files. Opt out with `CONVEX_PLUGIN_TELEMETRY=0` or `DO_NOT_TRACK=1`. ### 2. Building your app (only when you invoke a scaffolding flow) Flows that scaffold or extend an app (such as `quickstart` and `/add`) send the inputs you give them to the Convex scaffolding service so it can build for you — for example, the one-sentence idea you type is sent to the scaffolding endpoint and logged as a run start. These flows also download and run setup scripts from that service. This happens only when you invoke such a flow. The labs quickstart builds locally with legacy gateway publishing disabled. If you request frontend hosting, the chosen hosting workflow uploads the build to that hosting service. ### 3. Sharing a session to improve the tools (one-time, explicit opt-in) If you run `/improve-convex-plugin`, the plugin sends a **redacted** copy of your current session to the Convex team. The agent does not offer this on its own. Sharing is opt-in. The first time a session would be sent, you are asked to choose **Always**, **Just this once**, or **Never**. - **Always** and **Never** are remembered per user in `~/.convex/improve-consent`, so you are not asked again. - **Just this once** shares only that session and is not stored, so a later session asks again. Nothing is sent until a choice is recorded. The helper stops and tells the agent to ask you, and the skill instructs the agent not to answer on your behalf. The send itself runs as a normal agent action under your agent's usual tool approval. For a hard guarantee that nothing is ever sent, set `CONVEX_IMPROVE_CONSENT=never`. It overrides any stored choice. Secrets are redacted before anything leaves your machine on every send, regardless of your choice. Change your mind anytime by deleting `~/.convex/improve-consent`. If you don't invoke these flows, nothing beyond the telemetry above leaves your machine. ## License [Apache 2.0](skills/design/LICENSE.txt)

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Design and build reactive, type-safe, production-grade backends on Convex. Covers schema, queries/mutations/actions, indexes, auth, file storage, scheduling, real-time multiplayer, mobile backends, and LLM/agent workflows on Convex's one-platform stack.