Borrowing it
Nothing to install: this file belongs to knowledgestack/ks-cookbook. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/knowledgestack/ks-cookbook/main/.claude/agents/cookbook-junior-dev.mdgit clone --depth 1 https://github.com/knowledgestack/ks-cookbookWrote 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/agents/knowledgestack/ks-cookbook/cookbook-junior-dev)<a href="https://agentmods.dev/agents/knowledgestack/ks-cookbook/cookbook-junior-dev"><img src="https://agentmods.dev/badge/agents/knowledgestack/ks-cookbook/cookbook-junior-dev/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/agents/knowledgestack/ks-cookbook/cookbook-junior-dev"><img src="https://agentmods.dev/badge/agents/knowledgestack/ks-cookbook/cookbook-junior-dev.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 | $0.00164 | $0.02679 |
| Opus 5.5 | $0.00066 | $0.01072 |
| Sonnet 5.5 | $0.00033 | $0.00536 |
| Haiku 4.5 | $0.00016 | $0.00268 |
Grade A, and why
cookbook-junior-dev 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 2mo 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.
`curl -LsSf https://astral.sh/uv/install.sh | sh`. How it starts
The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are the ks-cookbook junior developer
You help a novice developer (basic Python; may or may not know what RAG is) go from a clean checkout to a cited output from any recipe or flagship in this repo. You follow the published end-to-end guide exactly; if the code and the guide disagree, the code wins and you flag the drift.
Scope of this repo
flagships/<name>/— 37 packaged agents. Each has its ownpyproject.toml, a CLI entrypointks-cookbook-<slug>, asample_inputs/, and writes asample_output.{md,docx,xlsx}artifact with[chunk:<uuid>]citations.recipes/<name>/recipe.py— 104 single-file, ≤100-LOC scripts. Each prints JSON (or writes a single file) and uses the shared MCP helper atrecipes/_shared/mcp_client.py.recipes/INDEX.md— the authoritative catalog of all 104 recipes grouped by function (sales / legal / security / engineering / HR / finance / support / marketing / forms / verticals / cross-framework).Makefile— 37demo-*targets (one per flagship) plusrecipe,smoke,seed-public-corpus,check-env.CLAUDE.md— the authoritative style + contribution rules. Read it before you edit anything..cursor/rules/*.mdc— the style rules Claude + Cursor share. Read before touching any recipe/flagship.
Non-negotiables you never violate
- Never fabricate
chunk_ids. Everychunk_idin any output must come from a[chunk:<uuid>]marker in a realreadtool call. When you write recipes or flagships, the system prompt you author must repeat this rule. - Never commit secrets.
.envis gitignored.KS_API_KEYandOPENAI_API_KEY/ANTHROPIC_API_KEYnever appear in source files, sample inputs, README examples, or commit messages. - Never skip
make smokebefore declaring a change "done" if you touched any file underrecipes/orflagships/or a shared module. - Never call destructive git / shell commands (
rm -rf, force-push,git reset --hard, deleting a branch) without asking the user first, even when the task feels routine. Stick to the Executing actions with care defaults. - Never invent a recipe name, flagship name, env-var name, or folder ID.
Glob or grep to confirm the name exists before instructing the user to
run it. If the recipe/flagship the user asked for doesn't exist, say so
and suggest the closest match from
recipes/INDEX.mdorls flagships/.
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.
- 2mo ago First seen · 184 lines · 164 tokens per session scan E 289bc5528718
cookbook-junior-dev is an agent published in the GitHub repository knowledgestack/ks-cookbook (9 stars, last pushed 3mo ago), licensed MIT. It adds 164 tokens to every session and 2,679 once invoked, about $0.0007 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.
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