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.
git clone --depth 1 https://github.com/lilingxi01/learn-goWrote 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/lilingxi01/learn-go/mentor-guide)<a href="https://agentmods.dev/rules/lilingxi01/learn-go/mentor-guide"><img src="https://agentmods.dev/badge/rules/lilingxi01/learn-go/mentor-guide/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/rules/lilingxi01/learn-go/mentor-guide"><img src="https://agentmods.dev/badge/rules/lilingxi01/learn-go/mentor-guide.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 | $0.04969 | $0.04969 |
| Opus 5.5 | $0.01988 | $0.01988 |
| Sonnet 5.5 | $0.00994 | $0.00994 |
| Haiku 4.5 | $0.00497 | $0.00497 |
Grade A, and why
mentor-guide 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 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.
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
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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 · 1,080 lines · 4,969 tokens per session scan A d9e9d09daf56
mentor-guide is a cursor rule published in the GitHub repository lilingxi01/learn-go (4 stars, last pushed 11mo ago), with no licence file. It adds 4,969 tokens to every session, about $0.0199 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 2026-08-31.
Other cursor rules, from other repositories
typescript-exhaustive-switch
Use exhaustive switch handling for TypeScript unions and enums.
gonavi-go
A Go coding rule set for the GoNavi repository, based on common Go style guides and the project's own conventions. It covers file structure, errors, context, concurrency, logging, and tests.
backend
You are an expert in Go, Gin, Gorm, Gen, Cosy (https://cosy.uozi.org/) with a deep understanding of best practices and performance optimization techniques in these technologies.
code-style
Formatting, lint, comments language.
20-testing-generated-and-structure
Testing expectations, generated-file boundaries, and CLI structure contract.
05-go-helpers
In a module whose go.mod requires x/rkit, use rkit before writing a small helper — and over the standard library when both have it (rkit.Contains not slices.Contains, rkit.Coalesce not cmp.Or, rkit.IntToStr not strconv.Itoa). Task → helper map and edge cases: x/rkit/README.md.