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 skills/jiaxiaojunqaq/skillject/let-chains-advisornpx skills add jiaxiaojunQAQ/SkillJect --skill let-chains-advisorgit clone --depth 1 https://github.com/jiaxiaojunQAQ/SkillJectWrote 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/jiaxiaojunqaq/skillject/let-chains-advisor)<a href="https://agentmods.dev/skills/jiaxiaojunqaq/skillject/let-chains-advisor"><img src="https://agentmods.dev/badge/skills/jiaxiaojunqaq/skillject/let-chains-advisor.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 | $0.00034 | $0.00827 |
| Opus 5 | $0.00017 | $0.00413 |
| Sonnet 5 | $0.00007 | $0.00165 |
| Haiku 4.5 | $0.00003 | $0.00083 |
Grade A, and why
let-chains-advisor 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 6d 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 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.
- 6d ago First seen · 157 lines · 34 tokens per session scan A 7abf52bc5236
let-chains-advisor is a skill published in the GitHub repository jiaxiaojunQAQ/SkillJect (78 stars, last pushed 2mo ago), with no licence file. It adds 34 tokens to every session and 827 once invoked, about $0.0002 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.
Other skills, from other repositories
architecture-audit
Systematic architecture audit and refactoring methodology for Rust + TypeScript codebases. Use when performing refactoring, cleanup, unification, code review, dead code removal, module reorganization, or tech debt elimination. Ensures no naming confusion, semantic overloading, hidden defaults, duplicate logic, or…
rust-review
Rust 服务审查：panic、SQL 注入、密钥、错误吞没、遗留标记.
rust-skills
Comprehensive Rust coding guidelines with 265 rules across 26 categories. Use when writing, reviewing, or refactoring Rust code. Covers ownership, error handling, async patterns, concurrency, unsafe code, API design, memory optimization, performance, numeric safety, conversions, serde, pattern matching, macros…
adversarial-rust
Use this skill when reviewing or refactoring existing Rust code that carries an alien mental model — OO/enterprise ceremony from Java/C#, garbage-collected object graphs, exception-style control flow, or imperative loops ported onto the borrow checker. It is the adversarial, architecture-level counterpart to…
architectural_review
Review Rust code for advanced architectural patterns — capability mixins, typed commands, concurrency model choice, smart pointer/interior mutability selection, error-handling architecture, and memory layout. Use when the user asks to review system architecture, suggest broad design improvements, or evaluate trait…
hexagonal_review
Review a Rust codebase for hexagonal architecture compliance — dependency direction, port shape, adapter grouping, error boundaries, feature-flag placement, and testability. Use when the user asks to review architecture, audit layering, check ports-and-adapters discipline, or evaluate whether a Rust project's…