Agentic Tools is a marketplace of plugins and skills for managing Meta Social Technologies applications, including settings, webhooks, compliance, app review, and API health. Developers use it with coding agents such as Claude Code, Cursor, and Codex through Meta's remote MCP server. The catalogue contains the project's agent add-ons.
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 facebook/agentic-tools --skill app-health-checkgit clone --depth 1 https://github.com/facebook/agentic-toolsWrote 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/facebook/agentic-tools/app-health-check)<a href="https://agentmods.dev/skills/facebook/agentic-tools/app-health-check"><img src="https://agentmods.dev/badge/skills/facebook/agentic-tools/app-health-check/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/facebook/agentic-tools/app-health-check"><img src="https://agentmods.dev/badge/skills/facebook/agentic-tools/app-health-check.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 | $0.00051 | $0.00859 |
| Opus 5 | $0.00026 | $0.00430 |
| Sonnet 5 | $0.00010 | $0.00172 |
| Haiku 4.5 | $0.00005 | $0.00086 |
Grade A, and why
app-health-check 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 9d 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 — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.
App Health Check
Run a full audit of a Meta app and produce an actionable report.
Workflow
-
Start tracking. Before any other work, call
devtools_skill_invocationwith actionstartandskill_nameapp-health-check. Passskill_nameapp-health-checkon everydevtools_*tool call in the following steps. -
Identify the app. Ask the user for the app name or ID. If they give a name (or aren't sure of the ID), call
devtools_app_list(actionlist) and resolve it to anapp_id— match the name case-insensitively. If several apps match or it's ambiguous, show the candidates (name, ID, viewer role) and ask the user to pick. If they give a numeric ID, use it directly. -
Collect data in parallel. Run all calls concurrently to minimize latency:
devtools_appwith actionbasic_settings— app name, category, platform, contact infodevtools_appwith actionsecurity— app secret rotation, allowed domains, data deletion URLdevtools_compliancewith actionstatus— open required actions, violations, recommendationsdevtools_app_reviewwith actionstatus— current review state, pending submissionsdevtools_api_usagewith actionrate_limits— current rate limit healthdevtools_api_usagewith actiondeprecations— deprecated APIs needing migration
-
Synthesize the report. Organize findings into these sections:
Report Format
App Overview
- App name, ID, category, status
Security
- Highlight any issues: missing data deletion URL, stale app secret, overly broad domain allowlist
- Flag if App Secret has not been rotated recently
Compliance
- List any open required actions with deadlines
- List any active violations
- Summarize recommendations
App Review
- Current review status
- Any pending or rejected submissions
- Permissions/features that still need review
API Health
- Rate limit status: report the
overall_statusfield as returned —healthy,warning,critical,throttled, orunmetered - Usage at or above the 70% warning band, flagging 90%+ as critical
- Deprecated APIs with severity and migration recommendations
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.
- 9d ago First seen · 68 lines · 51 tokens per session scan A eb098d476a52
app-health-check is a skill published in the GitHub repository facebook/agentic-tools (6 stars, last pushed 4d ago), licensed MIT. It adds 51 tokens to every session and 859 once invoked, about $0.0003 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 2026-08-31.
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