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 Fredrik-C/ContextKing --skill ck-signaturesgit clone --depth 1 https://github.com/Fredrik-C/ContextKingWrote 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/fredrik-c/contextking/ck-signatures)<a href="https://agentmods.dev/skills/fredrik-c/contextking/ck-signatures"><img src="https://agentmods.dev/badge/skills/fredrik-c/contextking/ck-signatures.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 | $0.00048 | $0.00377 |
| Opus 5 | $0.00024 | $0.00188 |
| Sonnet 5 | $0.00010 | $0.00075 |
| Haiku 4.5 | $0.00005 | $0.00038 |
Grade A, and why
ck-signatures 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 8d 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
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.
- 8d ago First seen · 42 lines · 48 tokens per session scan A 287cc0040214
ck-signatures is a skill published in the GitHub repository Fredrik-C/ContextKing (22 stars, last pushed 8d ago), with no licence file. It adds 48 tokens to every session and 377 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
refactoring-csharp
Rename and refactor C# symbols in a .NET solution or multi-solution monorepo with a one-shot Roslyn CLI. Use when the user asks to rename a symbol, preview impact, update references across a solution, or refactor shared projects across several solutions.
ts-review
A TypeScript code-review skill for projects that keep multiple packages in one repository. Such a repository is called a monorepo.
react-frontend
React, TypeScript, and Next.js patterns for frontend development. Use when building React components, managing state, fetching data, optimizing performance, or working with Next.js App Router. Covers React 18-19, hooks, Server Components, and type-safe patterns.
shared-tooling-eslint-prettier
ESLint 9/10 flat config with defineConfig(), Prettier v3.0+ shared config, eslint-config-prettier integration, typescript-eslint v8+ projectService.
code-review-typescript
Deep TypeScript-specific code review covering type safety, ESM/CJS, async correctness, money precision, and domain modeling. Applied in addition to the generic code-review skill when TypeScript/JavaScript code is detected. Invoked when reviewing TS/JS PRs, TypeScript changes, or performing TypeScript-specific quality…
typescript-quality-enforcer
Audit and strengthen TypeScript/JavaScript type-evidence and lint discipline, stage adoption of deterministic anti-slop Oxlint rules, and remediate approved violations without laundering diagnostics. Use when a repository needs stronger TypeScript/JavaScript quality enforcement, unsafe type escape-hatch cleanup…