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 richfrem/agent-plugins-skills --skill os-control-healthgit clone --depth 1 https://github.com/richfrem/agent-plugins-skillsWrote 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/richfrem/agent-plugins-skills/os-control-health)<a href="https://agentmods.dev/skills/richfrem/agent-plugins-skills/os-control-health"><img src="https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/os-control-health/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/richfrem/agent-plugins-skills/os-control-health"><img src="https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/os-control-health.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 | $0.00115 | $0.00720 |
| Opus 5.5 | $0.00046 | $0.00288 |
| Sonnet 5.5 | $0.00023 | $0.00144 |
| Haiku 4.5 | $0.00012 | $0.00072 |
Grade A, and why
os-control-health 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 yesterday.
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 — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OS Health Check (os-control-health)
Scan across context/events.jsonl Event Bus stream, review os-state.json liveness, and compile system metrics deterministically without mutating user files.
Contents
- Critical Constraints
- Quick start
- Cryptographic Verification Readiness
- Workflow
- Verification
- References
Critical Constraints
- Deterministic Diagnostic: Do not modify user code or repo configs during health checks.
- Never Enroll CIBA Keys: Check verification readiness via
--check; never execute key enrollment scripts autonomously. - Lock Hygiene: Always release acquired monitor locks upon completion or error recovery.
Quick start
Run a fast read-only check of the Agentic OS substrate and cryptographic readiness:
python3 scripts/setup_ciba_identity.py --check
Cryptographic Verification Readiness
Assert human cryptographic gates can verify via ssh-keygen, SSHSIG, and allowed_signers:
python3 scripts/setup_ciba_identity.py --check
Exit 0 indicates trust anchors are ready, but is not proof of human presence. An agent must never run setup_ciba_identity.py to enroll keys.
Workflow
- Emit Intent & Lock: Emit intent event and acquire
monitorlock viakernel.py:python3 scripts/kernel.py emit_event --agent os-control-health --type intent --action scan_metrics python3 scripts/kernel.py acquire_lock monitor - Analyze Event Bus & State: Inspect
context/events.jsonl, check hook error logs, and inspectos-state.json. - Inspect Memory & Substrate: Review
context/memory.mdlength, checkcontext/.locks/for stale locks, and verify substrate components. - Summarize & Release:
python3 scripts/kernel.py emit_event --agent os-control-health --type result --action scan_metrics --status success --summary "Metrics compiled" python3 scripts/kernel.py release_lock monitor
What ships with it
45 files 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.
- evals/evals.json 722 B
- references/acceptance-criteria.md 60 B
- references/detailed-reference.md 59 B
- references/evolution-log.md 36 B
- references/fallback-tree.md 54 B
- references/map-debt.md 31 B
- references/memory/post_run_survey.md 48 B
- scripts/control_plane/__init__.py 45 B runs code
- scripts/control_plane/adapters.py 45 B runs code
- scripts/control_plane/approver_policy.py 52 B runs code
- scripts/control_plane/baseline_transition_report.py 63 B runs code
- scripts/control_plane/constants.py 46 B runs code
- scripts/control_plane/coordinator.py 48 B runs code
- scripts/control_plane/edge_matrix.py 48 B runs code
- scripts/control_plane/gate_evidence.py 50 B runs code
- scripts/control_plane/gate1_approval.py 51 B runs code
- scripts/control_plane/identity_layout.py 52 B runs code
- scripts/control_plane/identity_setup.py 51 B runs code
- scripts/control_plane/implementation_loop.py 56 B runs code
- scripts/control_plane/implementation.py 51 B runs code
- scripts/control_plane/inspection.py 47 B runs code
- scripts/control_plane/installation_probe.py 55 B runs code
- scripts/control_plane/isolation_check.py 52 B runs code
- scripts/control_plane/measurement.py 48 B runs code
- scripts/control_plane/pipeline_simulator.py 55 B runs code
- scripts/control_plane/policy.py 43 B runs code
- scripts/control_plane/ports.py 42 B runs code
- scripts/control_plane/proof_edges.py 48 B runs code
- scripts/control_plane/proof_policy.py 49 B runs code
- scripts/control_plane/receipt_provenance.py 55 B runs code
- scripts/control_plane/registry.py 45 B runs code
- scripts/control_plane/review_options.py 51 B runs code
- scripts/control_plane/review_selection.py 53 B runs code
- scripts/control_plane/run_transition_simulation.py 62 B runs code
- scripts/control_plane/signing_selftest.py 53 B runs code
- scripts/control_plane/simulation_identity.py 56 B runs code
- scripts/control_plane/snapshot.py 45 B runs code
- scripts/control_plane/ssh_signing.py 48 B runs code
- scripts/control_plane/state_machine.py 50 B runs code
- scripts/control_plane/transition_request.py 55 B runs code
- scripts/control_plane/transition_simulation_cases.py 64 B runs code
- scripts/control_plane/transition_templates.yaml 59 B
- scripts/control_plane/tty_signer.py 47 B runs code
- scripts/kernel.py 26 B runs code
- scripts/setup_ciba_identity.py 39 B runs code
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.
- yesterday First seen · 79 lines · 115 tokens per session scan A 1ed002bdb399
os-control-health is a skill published in the GitHub repository richfrem/agent-plugins-skills (7 stars, last pushed 2d ago), licensed MIT. It adds 115 tokens to every session and 720 once invoked, about $0.0005 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 2026-10-16.
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