A checker for existing Falcon Foundry apps. It reads the app manifest and referenced files to find documented design and deployment mistakes, and can apply fixes marked safe.

Use it to audit an app, produce a report or JSON result, and apply the tool's safe fixes. It can also indicate whether error-level findings remain.

It finds issues such as invalid or duplicate handler names and undeclared request fields before they cause deployment or runtime problems.

app-audit — Skill for Claude Code by CrowdStrike/foundry-skills

Install

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.

Any agent

npx skills add CrowdStrike/foundry-skills --skill app-audit

Clone the repo

git clone --depth 1 https://github.com/CrowdStrike/foundry-skills

Made for: Claude Code.

Or install crowdstrike-falcon-foundry, the plugin that ships this one along with the rest of its 14 skills, 3 hooks.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/crowdstrike/foundry-skills/app-audit/github.svg)](https://agentmods.dev/skills/crowdstrike/foundry-skills/app-audit)

Your own site

<a href="https://agentmods.dev/skills/crowdstrike/foundry-skills/app-audit"><img src="https://agentmods.dev/badge/skills/crowdstrike/foundry-skills/app-audit/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/crowdstrike/foundry-skills/app-audit"><img src="https://agentmods.dev/badge/skills/crowdstrike/foundry-skills/app-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 104 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,202 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00104	$0.01202
Opus 5.5	$0.00042	$0.00481
Sonnet 5.5	$0.00021	$0.00240
Haiku 4.5	$0.00010	$0.00120

Measured 7d ago against content hash 0db14f5c58ae, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

app-audit 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 7d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/audit_app.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/app-audit/SKILL.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Auditing a Foundry App

Run the bundled script against the app directory (the one with manifest.yml). It reads the manifest and the files it points to, calls no API, and needs only pyyaml:

python3 skills/app-audit/scripts/audit_app.py path/to/app          # report
python3 skills/app-audit/scripts/audit_app.py path/to/app --json   # machine-readable
python3 skills/app-audit/scripts/audit_app.py path/to/app --fix    # apply the safe fixes, then report

It exits 1 when an error-level finding remains. Each finding names the skill and section that explains it; read that section before changing anything.

What It Checks

Check	Severity	Why
`function-count`	warn	More than 20 functions. Each is a separate container build, and a fresh install with 43 failed where the same handlers in 11 functions deployed.
`handler-name-length`	error	Handler names must be 5 to 64 characters (the CLI's own limits).
`handler-name-duplicate`	error	Handler names must be unique within a function.
`request-property-undeclared`	error	A workflow passes a property the function's `request_schema` doesn't declare, so it's silently dropped.
`response-key-missing`	warn	A workflow reads a `FaaS` output key the handler's `response_schema` doesn't declare.
`unknown-function-action`	error	A workflow calls `functions.<name>.<handler>` that isn't in the manifest.
`missing-workflow-integration`	error	A workflow calls a handler that has no `workflow_integration`, so deploy fails.
`provision-on-install-missing`	warn, fixable	Installing won't create the workflow. Leave it off only when the app provisions the workflow itself through the Workflows API, as rapid-response and scalable-rtr do.
`provision-on-install-false`	info	Fine when deliberate.
`pycache-not-ignored`	warn, fixable	A local `__pycache__/` would deploy. The CLI already skips hidden paths like `.venv/`.
`secret-in-env`	warn	A function reads a key, token, secret, or password from an environment variable, which is visible in app exports.
`server-url-protocol`	error	An OpenAPI server URL with variables starts with `https://` or `http://`, so the protocol doubles.
`server-variable-default`	warn	A server variable has a `default` but no `enum`, which renders as a one-value dropdown.
`ui-not-built`	error	A page or extension has no `dist/`; deploy never builds the UI.
`ui-stale-build`	warn	`src/` is newer than `dist/`, so deploy would ship the previous build.
`invalid-file`	error	`manifest.yml`, a workflow, or an API spec it points to doesn't parse, so the checks that read it were skipped.

Read the full file on GitHub · 64 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

scripts/audit_app.py 20 KB runs code

Changes

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.

7d ago Changed 0db14f5c58ae
8d ago First seen · 64 lines · 104 tokens per session scan A 2e397548990a

Subscribe to this mod's changes

app-audit is a skill published in the GitHub repository CrowdStrike/foundry-skills (36 stars, last pushed yesterday), licensed MIT. It adds 104 tokens to every session and 1,202 once invoked, about $0.0004 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 2026-10-30.

Claude Code Debugging Lint antigravity audit best-practices claude-code-plugin codex copilot falcon-foundry foundry

app-audit next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
app-auditCrowdStrike/foundry-skills	Skill	36	yesterday	MIT	A	104	Claude Code
skill-debugnyldn/claude-octopus	Skill	4.4k	yesterday	MIT	A	18	Claude Code
graph-it-livemagic5644/Graph-It-Live	Skill	63	yesterday	MIT	A	160	Claude Code
dead-code-huntermagic5644/Graph-It-Live	Skill	63	yesterday	MIT	A	165	Claude Code
graph-it-refactormagic5644/Graph-It-Live	Skill	63	yesterday	MIT	A	52	Claude Code
component-flattening-analysistech-leads-club/agent-skills	Skill	7.1k	yesterday	none	A	86	Claude Code, Codex
codenavitech-leads-club/agent-skills	Skill	7.1k	yesterday	none	A	139	Claude Code, Codex