improve

A repeating codebase-improvement workflow that scans for issues, fixes them one at a time, and scans again. It can focus on architecture, duplicate code, quality, or security.

In plain words
What is it for?
Use it to apply improvement passes, preview proposed fixes, resume an interrupted loop, set an iteration limit, or open a pull request when finished.
Why use it?
It reduces the effort of finding and working through many maintenance tasks without requiring a person to direct every iteration.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/samibs/skillfoundry/improve
Any agent
npx skills add samibs/skillfoundry --skill improve
Clone the repo
git clone --depth 1 https://github.com/samibs/skillfoundry

Made for: Claude Code, Codex.

Per session 9 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,216 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00009 $0.03216
Opus 5 $0.00005 $0.01608
Sonnet 5 $0.00002 $0.00643
Haiku 4.5 $0.00001 $0.00322

Measured 2d ago against content hash d9b52a97c1c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

improve 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 2d 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.

.agents/skills/improve/SKILL.md · 394 lines

How it starts

The opening of the file, as written. The whole thing — 394 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/improve — Continuous Improvement Loop

Scans the codebase for improvement opportunities, fixes them one at a time, and loops until no improvements remain or the token budget is exhausted.

This is Boris Cherny's "agent prompting itself" pattern applied to codebase health: the agent scans → prioritizes → fixes → checkpoints → scans again. No human input between iterations.

Protocol engine: agents/_ralph-loop-protocol.md + agents/_self-prompt-protocol.md


Usage

/improve                    Scan and fix all improvement categories
/improve arch               Architectural improvements only
/improve duplication        Duplicate code / abstraction consolidation
/improve quality            Code quality (GuardLoop patterns GL-01 through GL-10)
/improve security           Security posture improvements
/improve --dry-run          Show what would be fixed, do not apply any changes
/improve --resume           Resume a previously interrupted improvement loop
/improve --budget [N]       Set max iterations (default: 10)
/improve --pr               Open a PR with all fixes when the loop completes

What This Command Does

This is a self-prompting loop — the agent finds the work, does the work, finds more work, and stops when there is nothing left.

LOOP {
  1. SCAN       — Identify all improvement opportunities in scope
  2. PRIORITIZE — Rank by impact, select the single highest-priority item
  3. FIX        — Apply the fix (surgical — one item per iteration, no scope creep)
  4. VERIFY     — Confirm the fix did not regress anything
  5. CHECKPOINT — Record: what was fixed, what remains, what was learned
  6. JUDGE      — Any improvements remaining? Budget sufficient to continue?
  7. SELF-PROMPT — Formulate: "I fixed X. Still need to address Y at [location]."
  8. → RE-ENTER at step 2 with that self-prompt as current_task
}

EXIT when:
  - Backlog is empty (no improvements remain in scope)
  - Token budget < 20% remaining
  - Max iterations reached
  - Same item appears in remaining work twice with no change (oscillation)
  - An item cannot be fixed without user input (blocked)

Read the full file on GitHub · 394 lines

Changes

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.

  1. 2d ago First seen · 394 lines · 9 tokens per session scan A d9b52a97c1c3

Subscribe to this mod's changes

improve is a skill published in the GitHub repository samibs/skillfoundry (12 stars, last pushed 1mo ago), licensed MIT. It adds 9 tokens to every session and 3,216 once invoked, about $0.0000 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.

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