What it is
ECC, first published as Everything Claude Code, is a large bundle of agents, skills, commands, hooks and rules that sits on top of Claude Code and other agent harnesses. Its stated goal is to optimise the context window and persist everything else: planning, testing, review, session memory and continuous learning are each handled by its components.
The current README counts 71 agents, 311 skills and 97 legacy command shims, plus opt-in rule packs for TypeScript, Python, Go and others, installed through profiles from minimal to full. It includes AgentShield, a scanner for prompts, hooks, MCP config, permissions and secrets. Claude Code is the stable target; Codex and Qoder get native plugins and other harnesses range from beta to experimental. It is not affiliated with Anthropic.
The kit is MIT-licensed. Its maintainer also sells ECC Pro, a hosted GitHub App that analyses private repositories.
Our review
ECC is best treated as a catalogue to borrow from rather than a framework to install whole. At about 286,900 stars, affaan-m/ECC is by far the most-starred project in this category, and v2.2.3 shipped on 1 October 2026. Coverage from Augment Code and DataCamp tracks how fast it grew, and their counts differ because the catalogue keeps changing.
The README is unusually frank about cost. Rules are always loaded, and it warns that each MCP tool description eats into a 200,000-token window, potentially leaving about 70,000; it advises under 10 MCP servers and 80 active tools per project, a /context-budget command to prune, and a selective install profile. It also warns that Agent Teams spawn separate context windows that each burn tokens. Reviewers single out individual pieces, such as a code-reviewer agent that filters for high-confidence findings, and AgentShield is useful on its own for auditing any agent setup.
Installing the right thing takes care. The project uses three names, affaan-m/ECC on GitHub, ecc@ecc as the Claude plugin and ecc-universal on npm, and the README warns that ecc-install is a binary inside that package, not a package of its own. Third-party re-uploads and mirrors "may contain malware", by the README's own account. Running both the plugin and a manual install into one harness duplicates skills and hooks.
The business model matters for a team adopting it. The README says a single maintainer ships weekly across seven harnesses, funded by sponsors and ECC Pro, a GitHub App at $19 per seat a month that adds private-repo analysis with 50 analyses per active developer pooled across the installation. The repo carries about 260 open issues and pull requests. That makes the free kit a sensible thing to borrow agents and rules from, and a riskier thing to hang a team's whole process on than Spec Kit, which GitHub maintains.
Where it earns its place
A senior engineer using Claude Code daily on a TypeScript monorepo
Add review and planning agents plus TypeScript rules without bloating context
npx ecc-universal@2.2.3 install --profile minimal --target claude, add the TypeScript rule pack, and run /context-budget to prune. Free; the risk is always-loaded rules and tool descriptions crowding out room for code.
A security lead at a 50-developer company
Audit agent configs, hooks and MCP servers for secrets and risky permissions
AgentShield runs locally from the open-source kit. Automated private-repo scanning through ECC Pro costs $19 per seat a month, about $950 a month for 50 active developers, with Enterprise adding SSO-ready governance and audit logs.
A team lead whose Claude Code traffic goes through a corporate LLM gateway
Use ECC's workflows with a proxied or self-hosted model
ECC does not hardcode Anthropic transport; set ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN in Claude Code and its hooks, skills and rules run unchanged. Model costs follow the gateway's pricing.
Before you commit
- Setup
- npx ecc-universal@2.2.3 setup (Node.js 18+, Git, Claude Code 2.1+), or /plugin marketplace add https://github.com/affaan-m/ECC then /plugin install ecc@ecc inside Claude Code; use one path, not both.
- Integrations
- Claude Code is the stable target; native Codex and Qoder plugins; Cursor, OpenCode, Gemini, Kimi Code and other harnesses through install scripts, from beta to experimental. AgentShield is also published separately on npm as ecc-agentshield.
- Data and privacy
- The kit runs locally inside your agent, which sends content to its model provider; the README does not mention telemetry. ECC Pro is a hosted GitHub App that reads repository history to analyse it. Mirrors and re-uploads may contain malware, per the README. MIT; no published security advisories.
- Cost at scale
- The kit is free. ECC Pro is $19 per seat a month with 50 analyses per active developer, 1,000 commits per run and optional metered overage; Enterprise (unlimited analyses, 5,000 commits per run, SLA) is quoted.
- Limits
- Full installs consume much of the context window; about 260 open issues and pull requests; non-Claude harnesses lack feature parity; combining with Superpowers or BMAD produces competing workflows.
What's good
- Very broad catalogue across many languages
- Minimal and selective install profiles
- AgentShield scans hooks, MCP config and secrets
- Works through LLM gateways via Claude Code settings
What's not
- Always-loaded rules eat context at full install
- One maintainer across seven harnesses
- Three package names and malware-carrying mirrors
- Overlaps with Superpowers and BMAD workflows
Best for
Claude Code power users who want a large toolkit and will trim it to a minimal profile.
Alternatives
Everything Claude Code (ECC): common questions
- Is Everything Claude Code (ECC) worth it?
- ECC is a parts bin rather than a workflow: useful in a minimal profile, a standing tax on context at full size. We rate it 3.8 out of 5.
- How much does Everything Claude Code (ECC) cost?
- Free and open source (MIT). ECC Pro GitHub App for private repos is $19 per seat a month; Enterprise is quoted. You pay for your agent's model usage.
- What are the downsides of Everything Claude Code (ECC)?
- Always-loaded rules eat context at full install; one maintainer across seven harnesses; three package names and malware-carrying mirrors; overlaps with Superpowers and BMAD workflows.
- Who is Everything Claude Code (ECC) best for?
- Claude Code power users who want a large toolkit and will trim it to a minimal profile.
- How much does Everything Claude Code (ECC) cost for a team or in production?
- The kit is free. ECC Pro is $19 per seat a month with 50 analyses per active developer, 1,000 commits per run and optional metered overage; Enterprise (unlimited analyses, 5,000 commits per run, SLA) is quoted.
- Is Everything Claude Code (ECC) safe for company data?
- The kit runs locally inside your agent, which sends content to its model provider; the README does not mention telemetry. ECC Pro is a hosted GitHub App that reads repository history to analyse it. Mirrors and re-uploads may contain malware, per the README. MIT; no published security advisories.
- What are the best Everything Claude Code (ECC) alternatives?
- The closest alternatives we have reviewed are Superpowers, wshobson/agents and BMAD Method.
Answers checked Oct 23, 2026.