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 skills add ccashwell/evm-cortex --skill slither-analysisgit clone --depth 1 https://github.com/ccashwell/evm-cortexWrote 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/skills/ccashwell/evm-cortex/slither-analysis)<a href="https://agentmods.dev/skills/ccashwell/evm-cortex/slither-analysis"><img src="https://agentmods.dev/badge/skills/ccashwell/evm-cortex/slither-analysis/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ccashwell/evm-cortex/slither-analysis"><img src="https://agentmods.dev/badge/skills/ccashwell/evm-cortex/slither-analysis.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00042 | $0.01484 |
| Opus 5.5 | $0.00017 | $0.00594 |
| Sonnet 5.5 | $0.00008 | $0.00297 |
| Haiku 4.5 | $0.00004 | $0.00148 |
Grade A, and why
slither-analysis 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 1mo 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 — 252 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Slither Static Analysis
Installation
pip3 install slither-analyzer
# or
pipx install slither-analyzer
# Verify
slither --version
Running Slither
# Basic analysis
slither .
# Target specific contract
slither src/MyContract.sol
# JSON output for CI
slither . --json slither-report.json
# Specific detectors only
slither . --detect reentrancy-eth,reentrancy-no-eth,uninitialized-state
# Exclude detectors
slither . --exclude naming-convention,pragma
# With Foundry remappings
slither . --foundry-out-directory out
Severity Levels
| Level | Meaning | Action |
|---|---|---|
| High | Likely exploitable vulnerability | Fix immediately |
| Medium | Potential vulnerability or bad practice | Fix before deploy |
| Low | Minor issue or informational | Review and decide |
| Informational | Style or optimization suggestion | Nice to fix |
| Optimization | Gas optimization opportunity | Fix if meaningful |
Key Detectors
Critical / High
| Detector | Description |
|---|---|
reentrancy-eth |
Reentrancy with ETH transfer |
reentrancy-no-eth |
Reentrancy without ETH |
arbitrary-send-eth |
Unprotected ETH send |
arbitrary-send-erc20 |
Unprotected token transfer |
suicidal |
Unprotected selfdestruct |
uninitialized-state |
State variable not initialized |
unprotected-upgrade |
Missing upgrade auth check |
delegatecall-loop |
Delegatecall in loop |
Medium
| Detector | Description |
|---|---|
divide-before-multiply |
Precision loss from order of operations |
reentrancy-benign |
Reentrancy without direct exploit |
tx-origin |
Using tx.origin for auth |
unchecked-transfer |
Return value not checked |
locked-ether |
Contract can receive but not send ETH |
controlled-delegatecall |
User-controlled delegatecall target |
Low / Informational
| Detector | Description |
|---|---|
missing-zero-check |
No zero address validation |
calls-loop |
External calls in loop |
timestamp |
Block.timestamp usage |
assembly |
Inline assembly usage |
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.
- 1mo ago First seen · 252 lines · 42 tokens per session scan A 519108381dd4
slither-analysis is a skill published in the GitHub repository ccashwell/evm-cortex (131 stars, last pushed 17d ago), licensed MIT. It adds 42 tokens to every session and 1,484 once invoked, about $0.0002 per session on Opus 5.5. 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.
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