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 rules/ciscodevnet/essentials/uvgit clone --depth 1 https://github.com/CiscoDevNet/essentialsWrote 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/rules/ciscodevnet/essentials/uv)<a href="https://agentmods.dev/rules/ciscodevnet/essentials/uv"><img src="https://agentmods.dev/badge/rules/ciscodevnet/essentials/uv.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 5.1 | $0.00148 | $0.00148 |
| Opus 5 | $0.00074 | $0.00074 |
| Sonnet 5 | $0.00030 | $0.00030 |
| Haiku 4.5 | $0.00015 | $0.00015 |
Grade A, and why
uv 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.
What it actually says
uv Workspace
This project is a uv workspace with multiple members (see pyproject.toml [tool.uv.workspace]).
Syncing
Always use --all-packages when syncing:
uv sync --all-packages
Plain uv sync only installs the root project's dependencies, which are empty. Without --all-packages, workspace member packages (and their entry-point scripts) will not be installed into the virtual environment.
Locking
Use uv lock (not poetry lock or uv lock --no-update). No special flags are needed.
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 · 23 lines · 148 tokens per session scan A b601970c324f
uv is a cursor rule published in the GitHub repository CiscoDevNet/essentials (7 stars, last pushed 17d ago), licensed Apache-2.0. It adds 148 tokens to every session, about $0.0007 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 2026-09-04.
Other cursor rules, from other repositories
django-python
Rules for writing Python services at PostHog (Python servers powered by the Django framework).
react-typescript
Rules for writing frontend code at PostHog (mostly React + Typescript with Kea).
rust
Rules for writing Rust services at PostHog. Focuses on writing async Rust with Tokio and encoding general Rust best practices from the Rust book and docs.
020-flask
Flask API Gateway conventions for LMForge.
010-python
Python best practices for LMForge.
api-design-and-implementation
API Design and Implementation Rules for FastAPI Endpoints.