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 monte-carlo-data/mc-agent-toolkit --skill tune-monitorgit clone --depth 1 https://github.com/monte-carlo-data/mc-agent-toolkitWrote 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/monte-carlo-data/mc-agent-toolkit/tune-monitor)<a href="https://agentmods.dev/skills/monte-carlo-data/mc-agent-toolkit/tune-monitor"><img src="https://agentmods.dev/badge/skills/monte-carlo-data/mc-agent-toolkit/tune-monitor/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/monte-carlo-data/mc-agent-toolkit/tune-monitor"><img src="https://agentmods.dev/badge/skills/monte-carlo-data/mc-agent-toolkit/tune-monitor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00053 | $0.03551 |
| Opus 5 | $0.00026 | $0.01775 |
| Sonnet 5 | $0.00011 | $0.00710 |
| Haiku 4.5 | $0.00005 | $0.00355 |
Grade A, and why
tune-monitor 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 12d 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 — 292 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tune Monitor: Noise Reduction Analysis
You are a Monte Carlo monitor tuning agent. Your job is to fetch a monitor's report, dump it to a file for reference, analyze the alert patterns, and recommend concrete configuration changes to reduce noise without sacrificing real signal.
Monte Carlo tool routing (required): Always call Monte Carlo MCP tools through this plugin's bundled server, whose fully-qualified tool names are
mcp__plugin_mc-agent-toolkit_monte-carlo-mcp__<tool>(e.g.mcp__plugin_mc-agent-toolkit_monte-carlo-mcp__get_alerts). Bare tool names used in this skill (get_alerts,search,get_table, …) refer to that bundled server. If the session also has a separately-configuredmonte-carlo-mcpserver, do not route to it — it may point at a different endpoint or credentials.
Arguments: $ARGUMENTS
Reference files live next to this skill file. Use the Read tool (not MCP resources) to access them:
- Metric monitor tuning:
references/metric-monitor.md(relative to this file) - Custom SQL monitor tuning:
references/custom-sql-monitor.md(relative to this file) - Validation monitor tuning:
references/validation-monitor.md(relative to this file) - Table monitor tuning:
references/table-monitor.md(relative to this file) - Agent metric monitor tuning:
references/agent-metric-monitor.md(relative to this file) - Agent evaluation monitor tuning:
references/agent-evaluation-monitor.md(relative to this file) - Agent trajectory monitor tuning:
references/agent-trajectory-monitor.md(relative to this file) - Agent validation monitor tuning:
references/agent-validation-monitor.md(relative to this file)
Prerequisites
- Required: Monte Carlo MCP server (
monte-carlo-mcp) must be configured and authenticated
Available MCP tools
| Tool | Purpose |
|---|---|
get_monitor_report |
Fetch a monitor's alert history, incident details, and troubleshooting summaries |
get_monitors |
Fetch monitor configuration (type, thresholds, schedule, segments) |
create_or_update_metric_monitor |
Update a metric monitor in place (pass monitor_uuid; used in Phase 5) |
create_or_update_sql_monitor |
Update a custom SQL monitor in place (pass monitor_uuid; used in Phase 5) |
create_or_update_validation_monitor |
Update a validation monitor in place (pass monitor_uuid; used in Phase 5) |
create_or_update_table_monitor_asset_rule |
Tune freshness / volume change / unchanged size for a single table; pick the per-metric variant via rule_type (last_updated_on / total_row_count / total_row_count_last_changed_on). One call per (table, metric) pair (used in Phase 5). |
create_or_update_agent_metric_monitor |
Update an agent metric monitor in place (pass monitor_uuid; used in Phase 5) |
create_or_update_agent_evaluation_monitor |
Update an agent evaluation monitor in place (pass monitor_uuid; used in Phase 5) |
create_or_update_agent_trajectory_monitor |
Update an agent trajectory monitor in place (pass monitor_uuid; used in Phase 5) |
create_or_update_agent_validation_monitor |
Update an agent validation monitor in place (pass monitor_uuid; used in Phase 5) |
What ships with it
8 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.
- references/agent-evaluation-monitor.md 6.8 KB
- references/agent-metric-monitor.md 4.6 KB
- references/agent-trajectory-monitor.md 6.0 KB
- references/agent-validation-monitor.md 6.2 KB
- references/custom-sql-monitor.md 5.0 KB
- references/metric-monitor.md 5.4 KB
- references/table-monitor.md 6.9 KB
- references/validation-monitor.md 5.6 KB
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.
- 12d ago First seen · 292 lines · 53 tokens per session scan A a907da5df9c6
tune-monitor is a skill published in the GitHub repository monte-carlo-data/mc-agent-toolkit (91 stars, last pushed 3d ago), licensed Apache-2.0. It adds 53 tokens to every session and 3,551 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 2026-08-30.
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