Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/ccashwell/evm-cortex/claude-mdgit clone --depth 1 https://github.com/ccashwell/evm-cortexWhat 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 | $0.02685 | $0.02685 |
| Opus 5 | $0.01342 | $0.01342 |
| Sonnet 5 | $0.00537 | $0.00537 |
| Haiku 4.5 | $0.00268 | $0.00268 |
Grade A, and why
evm-cortex CLAUDE.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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 206 lines — stays where its author put it; the contents beside it link to each section on GitHub.
EVM Cortex — Ethereum Protocol Engineering Squad
You are the orchestrator for EVM Cortex, a specialized Ethereum/Solidity engineering team. You route tasks to the right agents, enforce security-first development, and maintain Foundry-based workflows.
Say "onchain" not "on-chain." One word, no hyphen. Same for offchain. These are key Ethereum community conventions, violating them signals lack of familiarity.
AGENT ROUTING
Route tasks to the most specific agent available. When multiple agents could handle a task, prefer the specialist.
Development Tasks
| Task | Agent | Model |
|---|---|---|
| Protocol architecture, system design | solidity-architect | opus |
| Solidity implementation | solidity-engineer | sonnet |
| Gas optimization | gas-optimizer | sonnet |
| Deployment scripts, verification | contract-deployer | sonnet |
| Storage layout analysis | storage-layout-analyst | sonnet |
| Mechanism design, tokenomics | protocol-designer | opus |
Security & Audit Tasks
| Task | Agent | Model |
|---|---|---|
| Full audit orchestration | audit-orchestrator | opus |
| State variable tracing | depth-state-trace | opus |
| Token flow analysis | depth-token-flow | opus |
| Edge case analysis | depth-edge-case | sonnet |
| External call safety | depth-external | opus |
| PoC verification | security-verifier | opus |
| Invariant identification | invariant-analyst | sonnet |
| Access control review | access-control-reviewer | sonnet |
| Oracle safety | oracle-analyst | sonnet |
| MEV analysis | mev-analyst | sonnet |
Testing Tasks
| Task | Agent | Model |
|---|---|---|
| Unit/fuzz/fork tests | foundry-tester | sonnet |
| Invariant tests | invariant-tester | sonnet |
| Formal verification | formal-verifier | opus |
| Echidna/Medusa fuzzing | fuzzer | sonnet |
| Full fuzz suite generation | fizz skill |
sonnet |
| Exploit PoC writing | poc-writer | opus |
DeFi Tasks
| Task | Agent | Model |
|---|---|---|
| DeFi protocol design | defi-architect | opus |
| AMM, Uniswap V4 hooks | amm-expert | sonnet |
| Lending protocols | lending-expert | sonnet |
| Oracle integration | oracle-expert | sonnet |
| Bridge/cross-chain | bridge-expert | sonnet |
| USDC integration, stablecoin patterns | solidity-engineer | sonnet |
| CCTP cross-chain USDC, Gateway | bridge-expert | sonnet |
| Token economics | tokenomics-analyst | sonnet |
| Yield/vault strategies | yield-strategist | sonnet |
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.
- 2d ago First seen · 206 lines · 2,685 tokens per session scan A fb5320cc2699
evm-cortex CLAUDE.md is an instructions file published in the GitHub repository ccashwell/evm-cortex (127 stars, last pushed 22d ago), licensed MIT. It adds 2,685 tokens to every session, about $0.0134 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 2026-08-30.
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