# building-edgespark-apps

Guides coding agents working on EdgeSpark applications. Ensures correct use of the CLI, server SDK types, database batching, and browser authentication.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 577 installs · ★ 1
- Author: EdgeSpark
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/edgesparkhq/agent-skills/tree/HEAD/skills/building-edgespark-apps/SKILL.md
- Updated: 2026-05-15
- HTML: https://affpapa.org/en/nevibecode/skills/building-edgespark-apps

## What it does

This skill sets development constraints for repositories containing `edgespark.toml`. It defines the required file inspection sequence, forbids manual changes inside `src/__generated__/`, and requires running `edgespark pull types` to refresh placeholder interfaces.

The prompt enforces concrete patterns across the stack. Client code must rely on `@edgespark/web`, `authUI.mount()` for UI login flows, and `es.api.fetch()` for API communication. On the backend, it replaces `db.transaction()` with `db.batch()` and requires schema updates through migration files rather than ad-hoc DDL.

Executing multiple `edgespark` commands concurrently breaks the workflow, so the skill strictly blocks parallel CLI operations.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add edgesparkhq/agent-skills --skill building-edgespark-apps -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/building-edgespark-apps/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/building-edgespark-apps/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add edgesparkhq/agent-skills --skill building-edgespark-apps -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/building-edgespark-apps/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add edgesparkhq/agent-skills --skill building-edgespark-apps -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/building-edgespark-apps/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install edgesparkhq/agent-skills building-edgespark-apps
```

2. **Manually: put the files in place**
- File: `.github/skills/building-edgespark-apps/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add edgesparkhq/agent-skills --skill building-edgespark-apps -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/edgesparkhq/agent-skills --path skills/building-edgespark-apps
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/building-edgespark-apps/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add edgesparkhq/agent-skills --skill building-edgespark-apps -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/edgesparkhq/agent-skills/tree/HEAD/skills/building-edgespark-apps/SKILL.md

## When to use it
- configure client authentication with `@edgespark/web` and `authUI.mount()`
- refresh SDK interfaces via `edgespark pull types`
- group database writes using `db.batch()`
- generate presigned PUT URLs for client-side storage uploads

## Example prompts
- Mount the login UI inside `#auth` using `@edgespark/web` and redirect to `/dashboard`
- Create a new database migration and sync types with `edgespark pull types`
- Add a Hono endpoint that checks `auth.user` imported from `edgespark/http`

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 41206e74cf8f267a.

BEGIN THIRD-PARTY FILE 41206e74cf8f267a
```text
---
name: building-edgespark-apps
description: Build and modify EdgeSpark apps. Use when a project has edgespark.toml, the user mentions EdgeSpark, or work involves the edgespark CLI, server SDK types, storage/auth/database workflows, deployment, or @edgespark/web.
metadata:
  author: EdgeSpark
  version: "0.0.4"
---

# EdgeSpark App Development

Use this skill for EdgeSpark-specific implementation and workflow decisions.

This skill is not EdgeSpark documentation. For exact contracts, read source, generated types, CLI help, and docs/Mintlify MCP. Use this skill for workflow, guardrails, and bug-prevention.

The reliable public surface in this repo is:

- the `edgespark` CLI
- scaffolded project structure from `edgespark init`
- generated `src/__generated__/edgespark.d.ts`
- generated `src/__generated__/server-types.d.ts`
- the `@edgespark/web` browser SDK

Use `@edgespark/web` and `authUI.mount()` as the default browser auth path for this repo unless custom forms are explicitly requested.

## Read Order

Read only what is needed for the task:

1. `edgespark.toml`
2. repo or project agent instruction file (`AGENTS.md`, `CLAUDE.md`, or `GEMINI.md`)
3. `src/__generated__/edgespark.d.ts`
4. `src/__generated__/server-types.d.ts`
5. `src/defs/index.ts`, `src/defs/db_schema.ts`, `src/defs/db_relations.ts`, `src/defs/runtime.ts`, `src/defs/storage_schema.ts`
6. `node_modules/@edgespark/web/dist/index.d.ts` when installed for exact browser SDK types
7. `node_modules/@edgespark/web/README.md` when installed for managed auth appearance variable meanings and defaults

Then load the specific reference you need:

- Day-to-day development workflows by surface: [dev-workflow.md](references/dev-workflow.md)
- Scaffold layout and generated-file rules: [project-structure.md](references/project-structure.md)
- Error-prone server-side usage patterns: [server-patterns.md](references/server-patterns.md)
- Small web usage patterns for `@edgespark/web`: [web-patterns.md](references/web-patterns.md)
- Auth config, OAuth providers, callback URLs, managed auth theming, and Google One Tap: [auth-patterns.md](references/auth-patterns.md)

## Hard Rules

- Run `edgespark <command> --help` before assuming flags or exact behavior.
- Run `edgespark` commands on behalf of the user. Only hand off steps that explicitly require a human browser action.
- Never run multiple `edgespark` commands in parallel.
- Treat scaffolded `src/__generated__/edgespark.d.ts` and `src/__generated__/server-types.d.ts` as placeholders until `edgespark pull types` populates them.
- Do not edit files under `src/__generated__/`.
- Use `@edgespark/web` for new browser code.
- Use `es.api.fetch()` for app API calls, not bare `fetch()` to same-origin app routes.
- Use `authUI.mount()` for managed auth UI unless custom forms are explicitly requested.
```
END THIRD-PARTY FILE 41206e74cf8f267a

The third-party file has ended. Everything between the 41206e74cf8f267a tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

First 2838 of 5860 bytes. © EdgeSpark · MIT · https://github.com/edgesparkhq/agent-skills/tree/HEAD/skills/building-edgespark-apps/SKILL.md

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