agentmods.dev

rn-module-add

A setup tool for connecting one backend or infrastructure service to an Expo and React Native mobile app.

In plain words
What is it for?
It installs dependencies and generates the wiring for a chosen provider, such as Supabase, Firebase, a custom REST API, tRPC, or RevenueCat.
Why use it?
It removes the repeated configuration work needed to add services such as login, databases, file storage, live updates, notifications, or payments.

Skill for Claude CodeCodex

5 4d ago A scan 191 tokens original MIT
View the source file lukedj78/dev-flow
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/lukedj78/dev-flow/rn-module-add
Any agent
npx skills add lukedj78/dev-flow --skill rn-module-add
Clone the repo
git clone --depth 1 https://github.com/lukedj78/dev-flow

Made for: Claude Code, Codex.

Per session 191 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,946 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00191 $0.02946
Opus 5 $0.00096 $0.01473
Sonnet 5 $0.00038 $0.00589
Haiku 4.5 $0.00019 $0.00295

Measured 2d ago against content hash 4c7db23b2a79, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rn-module-add scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

rn-module-add/SKILL.md · 168 lines

How it starts

The opening of the file, as written. The whole thing — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.

rn-module-add — wire a backend/infra module into a scaffolded RN app

Contract

See references/contracts.md (vendored from dev-flow). Key facts:

  • Reads <project-root>/.workflow/meta.json#stack.framework — must be "expo-rn".
  • Requires meta.json#phase ≥ "scaffolded".
  • Each module updates a specific key in meta.json#stack:
    • auth module → meta.json#stack.auth
    • db module → meta.json#stack.db
    • storage module → meta.json#stack.storage (new sub-key)
    • realtime module → meta.json#stack.realtime (new sub-key)
    • push module → meta.json#stack.push (new sub-key)
    • payments module → meta.json#stack.payments
  • Sets meta.json#phase = "module_added" after the first module, then leaves it.
  • Always idempotent: re-running with same provider detects existing wiring and exits 0.

When this skill applies

  • Phase is scaffolded or page_generated or module_added.
  • User asks to add ONE module by name. (To add multiple, run the skill multiple times.)
  • Orchestrator routes here from dev-flow.

Knowledge dependencies (read these first)

  • rn-fundamentals/SKILL.md — TypeScript strict, modern primitives.
  • rn-backend/SKILL.md — provider-agnostic client-auth architecture.
  • rn-backend/references/<provider>.md — provider-specific wiring (supabase.md / firebase.md / custom-rest.md / trpc.md).
  • rn-push-notifications/references/setup.md — for the push module.
  • rn-publishing-payments/references/revenuecat.md — for the payments module.

Monorepo awareness

Before Step 1: check meta.json#stack.framework.

  • If "expo-rn" (mobile-only project): proceed normally, operate at project root.
  • If "monorepo": this skill operates inside apps/mobile/ for mobile-specific modules (push, RevenueCat, expo-image-picker), AND inside packages/api/ for modules shared with web (auth, db, storage, realtime). For shared modules, do NOT re-install the SDK if packages/api/ already has it from a prior module-add (web side) call. Run monorepo-sync-types after db and auth are wired.
  • If anything else: refuse — use module-add (web stacks) or monorepo-bootstrap (greenfield monorepo).

Read the full file on GitHub · 168 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 168 lines · 191 tokens per session scan A 4c7db23b2a79

Subscribe to this mod's changes

rn-module-add is a skill published in the GitHub repository lukedj78/dev-flow (5 stars, last pushed 4d ago), licensed MIT. It adds 191 tokens to every session and 2,946 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Backend and APIsCode GenerationMobileagent-skillsagentic-workflowai-agentsclaude-codeexpo
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