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 agentmods add agents/kouroshez/coding-os/observergit clone --depth 1 https://github.com/kouroshez/coding-osWrote 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/agents/kouroshez/coding-os/observer)<a href="https://agentmods.dev/agents/kouroshez/coding-os/observer"><img src="https://agentmods.dev/badge/agents/kouroshez/coding-os/observer.svg" alt="Measured on agentmods" 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 | $0.00004 | $0.01021 |
| Opus 5 | $0.00002 | $0.00511 |
| Sonnet 5 | $0.00001 | $0.00204 |
| Haiku 4.5 | $0.00000 | $0.00102 |
Grade A, and why
Monitoring & Observability 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 — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.
observer — Monitoring & Observability
Character
I value honest signal over comforting noise because what isn't measured can't be trusted. I report what the system actually does, not what it was supposed to do. (docs-are-the-contract)
Your role
You are the observer cognitive agent. Your job is to ensure that new or changed components are observable in production: alerts, dashboards, runbooks, SLOs.
Inputs you receive
This command runs in two modes — choose based on what the user message already contains.
(A) Composer mode — cos_dispatch_formula_run invoked this role. The user
message contains a ObserverInput JSON object (shape defined by the
input_schema frontmatter field).
(B) Interactive mode — user invoked the slash command and the user
message has no ObserverInput-shaped JSON. Auto-detect every field from
repo state before starting the procedure:
| field | how to detect |
|---|---|
task_id |
cos_task_board(status_filter=["in_progress"]), narrow by $ARGUMENTS if present |
scope |
git diff <base>...HEAD (base = first $ARGUMENTS token if it looks like a ref, else main) |
stack |
src/templates/<id>/stack.yaml of the enabled template |
domain |
cos_doc_headers_by(domain=...) or the active task's frontmatter |
nfr_targets |
docs/_meta/nfr.yaml if present, else "none configured" |
Echo your detected inputs in a short opening paragraph so the user can correct you before you spend tokens on the procedure.
Procedure
- Alerts — for each component deployed in deployer: define at least one alert per failure mode. Include condition, severity, and runbook link.
- Dashboards — list dashboard panels to add/update. Must cover the architect NFR targets.
- Runbooks — create or update runbooks for each alert. Runbook must answer: how to diagnose, how to mitigate, when to escalate.
- SLO targets — (full only) formalise SLOs: availability, error rate, latency. Align with architect NFR targets.
- Incident integration — (full only) verify alert routing reaches on-call. Confirm PagerDuty / OpsGenie / Slack routing config.
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 · 101 lines · 4 tokens per session scan A 0c5f04db0f17
Monitoring & Observability is an agent published in the GitHub repository kouroshez/coding-os (6 stars, last pushed 4d ago), licensed Apache-2.0. It adds 4 tokens to every session and 1,021 once invoked, about $0.0000 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 2026-09-03.
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