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 Nimble-Co/nimblenomicon --skill performancegit clone --depth 1 https://github.com/Nimble-Co/nimblenomiconWrote 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/nimble-co/nimblenomicon/performance)<a href="https://agentmods.dev/skills/nimble-co/nimblenomicon/performance"><img src="https://agentmods.dev/badge/skills/nimble-co/nimblenomicon/performance/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/nimble-co/nimblenomicon/performance"><img src="https://agentmods.dev/badge/skills/nimble-co/nimblenomicon/performance.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 | $0.00049 | $0.02429 |
| Opus 5.5 | $0.00020 | $0.00972 |
| Sonnet 5.5 | $0.00010 | $0.00486 |
| Haiku 4.5 | $0.00005 | $0.00243 |
Grade A, and why
performance scanned grade A with 1 finding 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 1mo 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
fetch(event.request).then((response) => { The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- 1mo ago First seen · 408 lines · 49 tokens per session scan A daa21a98449a
performance is a skill published in the GitHub repository Nimble-Co/nimblenomicon (6 stars, last pushed 3mo ago), with no licence file. It adds 49 tokens to every session and 2,429 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other skills, from other repositories
nuget-update
A process for checking and updating NuGet packages, which are reusable .NET software libraries, in selected .NET 10 project templates. It checks stable versions and applies patch and minor updates while treating major updates separately.
dmcheck
Deterministic conduct verdicts for live tabletop sessions — CI for running a game. Use it when you want to know how a session went as a table: "did I leave anyone hanging?", "was that roll ever acknowledged?", "did the fight end without anyone being told?", "why did the table go quiet for five minutes?", post-session…
charactercheck
Deterministic D&D Beyond character-sheet derivation with per-stat provenance. Use it whenever you need a character's real numbers: "what's my AC again?", "is this build legal?", "did anything change since last session?", "give me the party's sheets for tonight", session-start prep, or auditing a sheet a player (or a…
srdcheck
Deterministic rules verdicts for D&D 5e game-running agents, cited to the SRD 5.2.1 (2024 rules). Use it mid-turn whenever a rules question has a codified answer: "can I grapple while raging?", "is this attack at advantage?", "does she still have her reaction?", "is Hexblade even a thing here?", "what's the save DC…
local-ai-agents
Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.