ECC is a toolkit that organizes and improves how coding agents work through skills, memory, security checks, research practices, and related extensions. It is for developers using agents such as Claude Code, Codex, OpenCode, and Cursor.
Borrowing it
Nothing to install: this file belongs to affaan-m/ECC. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/affaan-m/ECC/main/AGENTS.mdgit clone --depth 1 https://github.com/affaan-m/ECCWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/affaan-m/ecc/agents-md)<a href="https://agentmods.dev/instructions/affaan-m/ecc/agents-md"><img src="https://agentmods.dev/badge/instructions/affaan-m/ecc/agents-md.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.01862 | $0.01862 |
| Opus 5 | $0.00931 | $0.00931 |
| Sonnet 5 | $0.00372 | $0.00372 |
| Haiku 4.5 | $0.00186 | $0.00186 |
Grade A, and why
ECC AGENTS.md 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 3d 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.
Copies of this mod
3 near-identical copies found in the catalogue:
- awesome-claude-notes AGENTS.md — 89% identical, 36 lines differ
- everythingclaudecode AGENTS.md — 83% identical, 39 lines differ
- everything-claude-code AGENTS.md — 83% identical, 39 lines differ
How it starts
The opening of the file, as written. The whole thing — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Everything Claude Code (ECC) — Agent Instructions
This is a production-ready AI coding plugin providing 68 specialized agents, 286 skills, 94 commands, and automated hook workflows for software development.
Version: 2.2.1
Core Principles
- Agent-First — Delegate to specialized agents for domain tasks
- Test-Driven — Write tests before implementation, 80%+ coverage required
- Security-First — Never compromise on security; validate all inputs
- Immutability — Always create new objects, never mutate existing ones
- Plan Before Execute — Plan complex features before writing code
Available Agents
| Agent | Purpose | When to Use |
|---|---|---|
| planner | Implementation planning | Complex features, refactoring |
| architect | System design and scalability | Architectural decisions |
| tdd-guide | Test-driven development | New features, bug fixes |
| code-reviewer | Code quality and maintainability | After writing/modifying code |
| security-reviewer | Vulnerability detection | Before commits, sensitive code |
| spec-miner | Brownfield spec extraction | Onboarding brownfield projects to spec-driven development |
| build-error-resolver | Fix build/type errors | When build fails |
| e2e-runner | End-to-end Playwright testing | Critical user flows |
| refactor-cleaner | Dead code cleanup | Code maintenance |
| doc-updater | Documentation and codemaps | Updating docs |
| cpp-reviewer | C/C++ code review | C and C++ projects |
| cpp-build-resolver | C/C++ build errors | C and C++ build failures |
| fsharp-reviewer | F# functional code review | F# projects |
| docs-lookup | Documentation lookup via Context7 | API/docs questions |
| go-reviewer | Go code review | Go projects |
| go-build-resolver | Go build errors | Go build failures |
| kotlin-reviewer | Kotlin code review | Kotlin/Android/KMP projects |
| kotlin-build-resolver | Kotlin/Gradle build errors | Kotlin build failures |
| database-reviewer | PostgreSQL/Supabase specialist | Schema design, query optimization |
| python-reviewer | Python code review | Python projects |
| django-reviewer | Django code review | Django apps, DRF APIs, ORM, migrations |
| django-build-resolver | Django build, migration, and setup errors | Django startup, dependency, migration, collectstatic failures |
| java-reviewer | Java and Spring Boot code review | Java/Spring Boot projects |
| java-build-resolver | Java/Maven/Gradle build errors | Java build failures |
| loop-operator | Autonomous loop execution | Run loops safely, monitor stalls, intervene |
| harness-optimizer | Harness config tuning | Reliability, cost, throughput |
| rust-reviewer | Rust code review | Rust projects |
| rust-build-resolver | Rust build errors | Rust build failures |
| pytorch-build-resolver | PyTorch runtime/CUDA/training errors | PyTorch build/training failures |
| mle-reviewer | Production ML pipeline review | ML pipelines, evals, serving, monitoring, rollback |
| rag-pipeline-reviewer | RAG pipeline review | Retrieval quality, chunking, reranking, RAGAS evaluation coverage |
| typescript-reviewer | TypeScript/JavaScript code review | TypeScript/JavaScript projects |
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.
- 3d ago First seen · 175 lines · 1,862 tokens per session scan A 8d39c1fc1468
ECC AGENTS.md is an instructions file published in the GitHub repository affaan-m/ECC (251,781 stars, last pushed today), licensed MIT. It adds 1,862 tokens to every session, about $0.0093 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 2026-09-03.
Other instructions, from other repositories
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.