Plan Canvas
Point to the part you mean.
Annotate a plan in your browser. Send feedback to your agent, then review the revision in place.
Use Plan Canvas ↗The #1 agentic engineering toolkit
The operating layer for agent harnesses.
Skills, memory, planning and security. Give your coding agents a shared way to work, across the tools you use.
Guided setup · Claude Code, Codex & Kimi
npx ecc-universal install --guidedInstall ECC in your coding tool
257,250GitHub stars*
673,617Git clone events · 14 days
805.5KSkill installs on skills.sh*
6,184GitHub App installs*
Every installation method * Sources & methodology
* Snapshot: . Clone window: August 29–September 11. npm window: August 14–September 12 (30 days). npm counts are API-reported totals with reporting gaps; no estimates have been added. Skill installs count individual skills, and these channels overlap.
| Method | Reported measurement | Window and coverage |
|---|---|---|
| Git clone | 673,617 clone events 90,216 window-level unique cloners | August 29–September 11, 2026. Owner-verified GitHub traffic; clone operations do not establish completed installs. |
| ecc-universal | 21,962 npm downloads | August 14–September 12. Includes npm-based acquisition through npm, pnpm, Yarn, Bun and execution helpers; no separate client or harness split. |
| ecc-agentshield | 30,535 npm downloads | August 14–September 12. Package download events, including repeat downloads and automation. |
| Skills CLI / skills.sh | 805.5K skill installs | Provider-displayed cumulative count, rounded. Individual skill installs, not full-toolkit installs or unique developers. |
| GitHub App | 6,184 installs | Current first-party install stock. It can decrease when installations are removed. |
| Claude Code plugin | Verified installation route | No standalone native install count verified. Plugin acquisition may overlap repository downloads. |
| Codex plugin | Verified marketplace route | No standalone native install count verified. Legacy sync and repo-local configuration also have no separate activation count. |
| Uploaded release packages | 2,600 .tgz downloads | Cumulative: 1,607 for v2.0.0 and 993 for v2.0.0-rc.1. Video and image assets excluded. |
| Manual installs and harness adapters | Shared acquisition routes | Clone/install scripts, file copies and adapter setup can overlap GitHub or npm counts. No per-harness successful-install total verified. |
| Source ZIPs and raw files | Count unavailable | GitHub's autogenerated archives and individual file copies are not measured by uploaded release-asset counters. |
| AgentShield GitHub Action | Verified execution route | No independent execution or adoption total verified; package acquisition can overlap npm. |
These channels overlap, so their counts are not added together. npm totals are the API-reported values; shared zero-day reporting gaps remain, with no estimated downloads added. A missing native plugin counter means unknown, not zero.
Used by engineers at
Tesla
xAI
GoDaddy
ByteDance
Amazon
DigitalOcean
and many others
The GitHub App
Your repo. Your working practices.
ECC for GitHub
Turn project history into guidance.
Connect a repository, review the practices the App finds, and keep useful guidance with your code.
Explore the GitHub App ↗Prefer a local setup? Start with the open-source toolkit.
Inside the toolkit
Useful from the first task.
Planning & coordination
See the work. Shape what happens next.
Control Pane
A view across your sessions.
Inspect sessions, worktrees and overlapping work in the local operator interface.
Explore Control Pane →Local interface · demonstration dataContext & compute
Carry the work forward.
Unified Memory
The next agent can pick up the thread.
Save a handoff, search project context and read it from another harness. Available through the CLI and MCP.
See memory in practice →ecc memory init --scope project
ecc memory handoff --from codex --target claude --title "Continue the rollout" --body-file handoff.md
ecc memory search "rollout" --target-harness claudeCompute, in your workflow.
Sign in, find GPUs and inspect runtime status with the Itô compute skill.
Explore compute workflows ↗AgentShield
Understand what your agents can reach.
Security for the agent harness
Inspect configurations, permissions, hooks and MCP connections. Open the findings, understand the risk, and decide what to change.
AgentShield in action
See the scanner at work.
The original hackathon demonstration.
Watch the original video on YouTube ↗3 minutes · Historical demo
Plans
Start with the toolkit. Grow from there.
Free to build with.
$0
Open-source skills, agents, and commands for your local workflows.
Get the toolkitFor repository workflows.
$19/ active seat / month
Private repository coverage and deeper GitHub App guidance.
Compare App plansBuilt around your team.
Let's talk.
Rollout, training, and security support scoped to your organization.
Tell us what you needThe open-source toolkit is separate from GitHub App plans. See plan details.
Built in the open
People making ECC their own.
From local models to research workflows. Notes from developers using and adapting ECC.
“The model stays on track, checks its work, fixes the code without you having to ask it,”
“The "write the method down as an operational prompt" form itself is something I learned from your repo.”
“It’s been an incredible resource for understanding agentic workflows in Claude Code.”
Personal experiences, with the full discussion and feedback linked above. Also covered by Nico on X ↗
From engineering teams
An Amazon engineering leader was asking principal engineers to use ECC.
“His engineer thought that a team of 10 to 15 people were working on it.”
Amazon engineering feedbackRelayed privately to the founder · August 2026
Work with Affaan
An operating layer for your dev team.
Technical sessions at Skydio and ByteDance. Workshops, implementation and security reviews for the way your team works.
Talks & consulting →Community coverage
ECC, from another perspective.
Tutorials, walkthroughs and independent takes from the people exploring ECC.
DataCampArticle
The framework, explained
Everything Claude Code (ECC): The Open-Source Agent Framework for Claude Code
Dario Radečić walks through the architecture, setup and tradeoffs of building with ECC.
AI DiveArticle + video
A closer, critical look
5 Things To Steal From Everything Claude Code
A selective-install review: useful pieces to take, context costs to consider, and what to leave behind.
Tencent Cloud Developer Community
Chinese-language articleWatch the community walkthroughs
YouTubeECC: Give Your AI Coder an Engineering ProcessThe Next New Thing · Watch from 1:40
Everything Claude Code — The #1 Claude Code GitHub RepoAndrew Korshak · Video
- ECC workflows and resourcesPrism Labs · Video
Everything Claude Code: The #1 Claude Code PluginSoftware Engineer Meets AI · Video
- Exploring ECC with Claude Code and CodexCodedigipt · Video
- ECC Harness 2026Abd Shomad · Playlist
- Five things to take from ECCAI Dive · Video
From the archive ·
A moment on GitHub Trending.
ECC alongside other open-source projects in Nam Nguyễn’s September 6 coverage.
Find Nam Nguyễn’s coverage on YouTubeA few details
Questions before you begin.
What is ECC?
ECC is an open-source collection of skills, agents, hooks and workflow tools for coding agents. Start with the pieces your project needs, keep them in version control, and use them in your existing harness.
Explore the open-source projectHow does the GitHub App work?
Connect the repositories you choose to the ECC GitHub App. It uses repository history to prepare reviewable guidance for your team. Review the requested GitHub permissions before installing; your existing pull-request review remains part of the workflow.
Review the GitHub AppWhat does AgentShield check?
AgentShield inspects agent configuration and workflow surfaces for risks such as prompt injection, unsafe permissions and exposed secrets. A scan is a review aid, not a guarantee that a repository or agent is safe. Review the scanner and the scope you select before running it.
Explore AgentShieldWhat is included in the open-source toolkit?
ECC is MIT-licensed and includes skills, agents, hooks, Plan Canvas, unified memory and compute workflows. Use them from the open-source repository. The GitHub App has separate Free, Pro and Enterprise plans; paid rollout and support are scoped with your team.
Compare the plansNext step