Monoscope is an open-source observability platform that stores and lets users explore logs, traces, and metrics in S3-compatible storage. Teams use it for monitoring, natural-language queries, anomaly detection, live log and trace viewing, and scheduled reports, either self-hosted or through its cloud service.
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 monoscope-tech/monoscope --skill test-driven-developmentgit clone --depth 1 https://github.com/monoscope-tech/monoscopeWrote 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/monoscope-tech/monoscope/test-driven-development)<a href="https://agentmods.dev/skills/monoscope-tech/monoscope/test-driven-development"><img src="https://agentmods.dev/badge/skills/monoscope-tech/monoscope/test-driven-development/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/monoscope-tech/monoscope/test-driven-development"><img src="https://agentmods.dev/badge/skills/monoscope-tech/monoscope/test-driven-development.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 | $0.00017 | $0.02340 |
| Opus 5.5 | $0.00007 | $0.00936 |
| Sonnet 5.5 | $0.00003 | $0.00468 |
| Haiku 4.5 | $0.00002 | $0.00234 |
Grade A, and why
test-driven-development 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 3d 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
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.
- 3d ago First seen · 331 lines · 17 tokens per session scan A 64b03fce4aee
test-driven-development is a skill published in the GitHub repository monoscope-tech/monoscope (2,044 stars, last pushed yesterday), licensed AGPL-3.0. It adds 17 tokens to every session and 2,340 once invoked, about $0.0001 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 2026-11-03.
test-driven-development compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| test-driven-developmentmonoscope-tech/monoscope | Skill | 2.0k | yesterday | AGPL-3.0 | A | 17 | Claude Code, Codex |
| opentelemetry-net-instrumentationAaronontheweb/dotnet-skills | Skill | 1.3k | 9d ago | MIT | A | 56 | Claude Code |
| opentelemetrybobmatnyc/claude-mpm-skills | Skill | 78 | 3mo ago | MIT | A | 29 | Claude Code |
| opentelemetry-docspledgeandgrow/pledge-skills | Skill | 10 | 3mo ago | MIT | A | 32 | Claude Code, Codex |
| Observability & MonitoringArieGoldkin/ai-agent-hub | Skill | 12 | 11mo ago | MIT | A | 17 | Claude Code, Codex |
| monitoring-observabilitywilliamzujkowski/standards | Skill | 19 | 2mo ago | MIT | A | 14 | Claude Code, Codex |
| Pair Programmingruvnet/RuView | Skill | 103k | yesterday | MIT | A | 61 | Claude Code |