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 commands/develo-pera/ralph-kit/add-featuregit clone --depth 1 https://github.com/develo-pera/ralph-kitWrote 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/commands/develo-pera/ralph-kit/add-feature)<a href="https://agentmods.dev/commands/develo-pera/ralph-kit/add-feature"><img src="https://agentmods.dev/badge/commands/develo-pera/ralph-kit/add-feature.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 | $0.00031 | $0.00398 |
| Opus 5 | $0.00015 | $0.00199 |
| Sonnet 5 | $0.00006 | $0.00080 |
| Haiku 4.5 | $0.00003 | $0.00040 |
Grade A, and why
add-feature 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 4d 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.
What it actually says
/ralph-kit:add-feature
Add a single feature to the current Ralph project (./.ralph/).
Step 1 — Prerequisites
Read .ralph/fix_plan.md and .ralph/PROMPT.md. If either is missing or fix_plan.md starts with Status: BLOCKED, stop and tell the user to run /ralph-kit:define first.
Step 2 — Feature intake
If the user passed a feature name as argument, use it as the default. Otherwise ask for the name. Then ask the three mini-spec questions:
- What does it do? (1–2 sentences.)
- Inputs / outputs.
- Acceptance criteria (testable bullets).
Then ask the priority with AskUserQuestion: High, Medium, Low.
Step 3 — Draft tasks
Expand the feature into 2–4 tasks sized for one Ralph loop each. Show the draft in chat.
Step 4 — Diff preview + write
- Show the new
.ralph/specs/<slug>.mdcontent. - Show the appended-to
fix_plan.mdsection as a diff. - Ask with
AskUserQuestion: Apply, Edit, Cancel. - On Apply, write the spec file and rewrite
fix_plan.mdwith the appended tasks.
Guardrails
- Slug = kebab-case of feature name; if
specs/<slug>.mdexists, append suffix-2,-3, etc. - Never modify existing tasks; only append.
- Never write outside
.ralph/.
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.
- 4d ago First seen · 41 lines · 31 tokens per session scan A 21966ba91011
add-feature is a command published in the GitHub repository develo-pera/ralph-kit (5 stars, last pushed 4mo ago), licensed MIT. It adds 31 tokens to every session and 398 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 2026-08-31.
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