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 mtarcure/claude-vibe-squad --skill cosmos-sdk-audit-checklistgit clone --depth 1 https://github.com/mtarcure/claude-vibe-squadWrote 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/mtarcure/claude-vibe-squad/cosmos-sdk-audit-checklist)<a href="https://agentmods.dev/skills/mtarcure/claude-vibe-squad/cosmos-sdk-audit-checklist"><img src="https://agentmods.dev/badge/skills/mtarcure/claude-vibe-squad/cosmos-sdk-audit-checklist/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/mtarcure/claude-vibe-squad/cosmos-sdk-audit-checklist"><img src="https://agentmods.dev/badge/skills/mtarcure/claude-vibe-squad/cosmos-sdk-audit-checklist.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00062 | $0.00903 |
| Opus 5.5 | $0.00025 | $0.00361 |
| Sonnet 5.5 | $0.00012 | $0.00181 |
| Haiku 4.5 | $0.00006 | $0.00090 |
Grade A, and why
cosmos-sdk-audit-checklist 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 — 41 lines — stays where its author put it; the contents beside it link to each section on GitHub.
cosmos-sdk-audit-checklist
Known critical-bug classes for Cosmos-SDK / CometBFT chains and appchains. Run every item against custom modules (x/*), the app wiring (app/), and the ante chain. These are the classes that halt chains or move funds.
Non-determinism → consensus fork/halt (the #1 Cosmos class)
Any code reached in consensus (DeliverTx, BeginBlock, EndBlock, msg handlers, ValidateBasic) MUST be deterministic across nodes. Grep for:
- Map iteration without sorted keys (
for k := range someMapthat affects state/events) → nodes diverge. time.Now()/ wall-clock instead ofctx.BlockTime()in a state-affecting path (telemetry/queries are fine; state is not).math/rand, goroutine/scheduling-dependent order, floating point,os/env/filesystem reads, non-deterministic serialization.- Iterating a
sdk.Contextstore and mutating during iteration.
Begin/EndBlocker panics → chain halt
Begin/EndBlock panics are NOT recovered (unlike DeliverTx). Any panic reachable from permissionless state (a delegation, a zero-power validator, a division, a LegacyNewDecFromStr on attacker-influenced input, an out-of-range slice) = a chain halt. Audit every division/decimal/slice/MustXxx in ABCI paths for a reachable panic. (Historical: x/group EndBlock zero-tally error — GHSA-47ww.)
Unmetered / unbounded functions → DoS
EndBlocker or msg handlers that do work proportional to unbounded state (a list an attacker can grow cheaply: pending items, ballots, groups, gasless accounts) → sustained griefing / slowdown / halt. Check every loop over a growable collection for gas metering + a bound.
AnteHandler bypass
- Nested/inner messages (authz
MsgExec, group proposals, ICA) that skip the ante checks applied to top-level msgs — recursion must re-classify (fee, sig, gas) on inner msgs. - Gasless / fee-abstraction whitelists: does a "free" path let an attacker execute value-moving msgs or grow state for free? Does account-init verify the signer's sig before bypassing later sig decorators?
- Sequence/nonce ordering and replay across the ante.
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 · 41 lines · 62 tokens per session scan A cb9803b17077
cosmos-sdk-audit-checklist is a skill published in the GitHub repository mtarcure/claude-vibe-squad (165 stars, last pushed 1mo ago), licensed MIT. It adds 62 tokens to every session and 903 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 2026-09-19.
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