Foundation Base
Production readyUtilitiesv1.0.0 · updated Jul 1, 2026
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Open Source Content Calendar Template

Plan, schedule, review, and publish across channels.

A content operations foundation for calendars, campaign planning, draft workflows, approvals, and publishing checklists.

Runnable Agent-ready Install-ready Deploy-ready
foundationbase.app/demo/content-calendarOpen full demo →

This is the real app, not a mockup. Whatever you enter in the demo stays in your browser and belongs to nobody.

What you get

One zip. Everything to own it.

Content Calendar is a utility foundation for creators and teams who need a clear publishing workflow. It ships with calendar views, campaign entities, workflow states, approval notes, channel metadata, and agent instructions for adapting the editorial model.

  • Calendar view
  • Campaigns
  • Draft workflow
  • Approval states
  • Channel metadata
content-calendar.zipMIT
content-calendar/├── app/the running Next.js app├── agent/START_HERE, PROJECT_MAP, RULES, RECIPES, TESTS, DEPLOY├── CLAUDE.mdread automatically by Claude Code├── AGENTS.mdread automatically by Codex├── .cursor/rules/loaded automatically by Cursor└── README.mdrun it, then make it yours

Inside the app

What the running app actually looks like
Content Calendar: Calendar plan
Calendar plan — A month and list hybrid for campaigns and content deadlines.

Customize with AI

Your agent already knows this codebase.

Agent instructions describe content types, workflow states, calendar logic, and publishing checklists.

CodexClaude CodeCursor

Prompts written against this app

Change the branding, copy, and layout for my Content Calendar app.
Add or remove fields so it matches my workflow.
Add export and import for my utilities data.
Add optional sync later without changing the local-first default.

Run it

5 min to your own copy.

  1. 01Create your editable app copy and unzip it.
  2. 02Run npm install.
  3. 03Run npm run dev and open http://localhost:3000.
  4. 04Read /agent/START_HERE.md before customizing.
  5. 05Swap the local-first storage boundary for your own backend when ready.
Full walkthrough, including deploy and install →
Where your data lives

Content Calendar data stays in this browser by default.

No account, backend, or cloud sync is included in the current package.

An agent can add optional sync later while preserving the local-first default.

Honest limitation

This package is standard-ready for Create My App and AI customization.

A full app-only PWA install route is not enabled yet for this app.

Verification receiptchecked Aug 2, 2026 at c11c184 · v1.0.0
Demo renderscaptured 2026-07-26, 36 KBpassed
Package installs and buildsinstalled, typechecked and built in 65s on node v24.13.0passed
Source package complete31 files, 53 KBpassed
Agent instructions included5 handoff files presentpassed
No network calls in app sourcestatic scan clean: no network calls, eval, or secrets in app sourcepassed
License matches the packageMIT, matching the file in the packagepassed

If this isn’t quite right

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Take Content Calendar and make it yours.

Free, MIT, 5 min to running. The demo above is exactly what lands in your folder.

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