Your agent invents things because it has no memory, and can't touch your database because it has no arms. rsc is the meta-harness that gives it both, plus the trade to know the job and the reflexes to not break your repo. For Claude Code, Codex and 15 more.
Skill Claude CodeCodex
Use when operating Make.com (formerly Integromat) programmatically — driving its REST API v2 or the Make MCP server from code or an agent to create, read, update, activate, run, clone or delete scenarios, connections, hooks and data stores. NOT designing what the flow should do (that is automation-flows), NOT choosing…
Skill Claude CodeCodex
Use when a MARKET as a whole needs a defensible picture — TAM/SAM/SOM sized top-down AND bottom-up until the two converge, cut into reachable segments with one named beachhead, demand proven real, and a dated source behind every figure. NOT profiling named rivals and their moves (that is competitor-watch), NOT…
Skill Claude CodeCodex
Use when the words span a marketing surface — value proposition, section copy, microcopy, launch and email sequences, channel adaptation, SEO-aware structure — grounded in the brand study, which it stops and builds if missing. NOT one conversion page (that is landing-copy), NOT tone rules (that is brand-voice), NOT…
Skill Claude CodeCodex
Use when a finished article has to land on Medium correctly — profile vs publication, cross-posting under a canonical link so your own site keeps the SEO credit, import-tool failures, the 5-tag cap, pseudo-Markdown gotchas. NOT writing or headlining the piece (that is medium-writing), NOT cadence or earnings (that is…
Skill Claude CodeCodex
Use when planning Medium as a growth and revenue system over months rather than one post — the Partner Program, solo profile versus starting or pitching a publication, engineering for Boost and the distribution tiers, tag and topic choices for reach, and a canonical cross-posting plan, read from and written back to…
Skill Claude CodeCodex
Use when crafting or rewriting ONE Medium story so it earns reads, claps and Boost curation — the title, subtitle and kicker as a hook system, fixing a story with views but a low read ratio, making a draft scannable and curation-eligible, or reshaping a blog post or newsletter into Medium-native form. NOT scheduling…
Skill Claude CodeCodex
Use when a meeting just ended and a transcript or rough notes must become a record the absent can act on — decisions with their why, actions with an owner and a real date, open questions, a recap inside 24–48h — or to clean an AI-notetaker draft that invented tasks or swapped speakers. NOT the durable ADR with…
Skill Claude CodeCodex
Use when running Python or GPU workloads serverlessly on Modal — modal.App, inline container Images, gpu= on @app.function, Volumes for weight caching, Cron schedules, ASGI endpoints, modal run vs serve vs deploy. NOT managed prediction APIs with no container of your own (that is replicate); NOT SSH-able GPU boxes…
Skill Claude CodeCodex
Use when modeling MongoDB documents (embed versus reference, the 16MB cap, bucket and subset patterns), choosing or fixing indexes (compound order by the ESR rule, partial, TTL, multikey, reading explain), writing aggregation pipelines that stay index-eligible, running multi-document transactions with retry, or…
Skill Claude CodeCodex
Use when setting up uptime and health monitoring, alerts, or on-call basics for a service already in production, so you learn it is down before customers do — health and readiness probes, alerting on SLO error-budget burn rather than raw counts, curing alert fatigue, on-call rotation with escalation, and a status…
Skill Claude CodeCodex
Use when an interface moves and the movement has to feel right — durations and easing, what must never animate, fixing motion that reads sluggish, cheap or janky, and reduced-motion. Web and native. NOT the visual system (that is design), NOT the graded critique (that is design-loop).
Skill Claude CodeCodex
Use when designing, querying, indexing or operating a MySQL or MariaDB database and engine-specific behaviour matters — schema and type choices, index design, reading EXPLAIN, online schema change, replication and replica lag, locking and InnoDB deadlocks, charset traps, and server config. NOT portable…
Skill Claude CodeCodex
Use when operating a live n8n instance programmatically — its REST API ({host}/api/v1, X-N8N-API-KEY) or the n8n-mcp server — to create, validate, test, activate, update, delete workflows and read executions on self-host or n8n.cloud. NOT designing the flow or its importable JSON (that is automation-flows), NOT…
Skill Claude CodeCodex
Use when you have picked Neon (serverless Postgres) and need to connect correctly from a serverless or edge runtime, wire database branching into dev, preview and CI, or stop being burned by scale-to-zero cold starts and pooler limits — including choosing HTTP versus WebSocket connections and pooled versus direct…
Skill Claude CodeCodex
Use when building or structuring a NestJS backend — feature modules, providers and DI wiring, provider scopes and request-lifecycle order, where to bind guards/pipes/interceptors/filters, and testing with Test.createTestingModule. NOT a bare Express/Fastify service with no DI (that is nodejs), NOT framework-agnostic…
Skill Claude CodeCodex
Use when deploying or operating a site on Netlify — writing or fixing netlify.toml, authoring Functions or Edge Functions, redirects, rewrites and headers, env vars per deploy context, and shipping via the Netlify CLI. NOT deploying to Vercel (that is vercel).
Skill Claude CodeCodex
Use when running an email newsletter as a recurring publication — subject + preview pair, issues that turn opens into clicks, the welcome sequence, cadence and engagement tiering, growth loops, and a post-Apple-MPP click scorecard. NOT one-off launch or nurture sends (that is marketing), NOT SPF/DKIM/DMARC (that is…
Skill Claude CodeCodex needs its repo
Use when building, reviewing, testing, securing, or optimizing a Next.js App Router app: Server vs Client boundaries, use server actions, route handlers, the v15 vs v16 use cache caching model, metadata/SEO, auth, and Core Web Vitals. NOT framework-agnostic React or a Vite SPA (that is react), and NOT visual/UI design…
Skill Claude CodeCodex
Use when choosing how to tokenize text or which transformer type fits an NLP task, when a tokenizer over-fragments non-English text or inflates token cost, when picking a language metric, or when classification, NER or summarization output looks wrong and it is unclear whether the tokenizer, the architecture or the…
Skill Claude CodeCodex
Use when building an app on a no-code/low-code platform (Bubble, Softr, Glide over Airtable or Xano) — picking the platform, modeling the data, keeping usage-metered cost predictable, and planning the exit before lock-in. NOT a hand-written coded app (that is nextjs), NOT wiring SaaS tools together with no app UI…
Skill Claude CodeCodex needs its repo
Use when building or operating a plain Node.js / Express 5 backend service: project layout, async correctness, central error middleware, fail-fast config, graceful shutdown on SIGTERM. NOT DI modules/providers/guards (that is nestjs), NOT the type system or tsconfig (that is typescript), NOT REST contract design (that…
Skill Claude CodeCodex
Use when wiring server code or a cron job to Notion as an ops backend over its HTTP API: pushing or mirroring database rows, two-way sync without duplicates, page blocks, or an integration broken by the 2025-09-03 data-source split. NOT generic REST wiring (that is api-connector-builder), NOT inbound Notion webhook…
Skill Claude CodeCodex needs its repo
Use when instrumenting a service from the inside so an incident can be explained from telemetry alone — wiring OpenTelemetry logs, metrics and traces, standing up a Collector, exporting via OTLP, and defining telemetry-driven alerts. NOT outside-in uptime probes, on-call rotation, or who-gets-paged (that is…
Skill Claude CodeCodex
Use when running open-weight LLMs locally with Ollama — pulling and tagging models, calling the local API, picking a quantization or GGUF, writing Modelfiles, and sizing VRAM and RAM for the machine at hand. NOT remote or managed GPU serving and autoscaling (that is runpod), NOT downloading raw weights or datasets…
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: