Borrowing it
Nothing to install: this file belongs to SioYooo/RepoGrammar. 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/SioYooo/RepoGrammar/main/.agents/skills/implement-change/SKILL.mdgit clone --depth 1 https://github.com/SioYooo/RepoGrammarWrote 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/sioyooo/repogrammar/implement-change)<a href="https://agentmods.dev/skills/sioyooo/repogrammar/implement-change"><img src="https://agentmods.dev/badge/skills/sioyooo/repogrammar/implement-change/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/skills/sioyooo/repogrammar/implement-change"><img src="https://agentmods.dev/badge/skills/sioyooo/repogrammar/implement-change.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 | $0.00028 | $0.00411 |
| Opus 5.5 | $0.00011 | $0.00164 |
| Sonnet 5.5 | $0.00006 | $0.00082 |
| Haiku 4.5 | $0.00003 | $0.00041 |
Grade A, and why
implement-change 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 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.
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
Purpose
Provide the default implementation workflow for scoped code changes.
Trigger conditions
Use when editing src/, changing CLI behavior, adding tests, changing
repository automation, or touching product runtime boundaries.
Required reading
AGENTS.mddocs/README.mddocs/architecture/module-map.mddocs/development/documentation-policy.md- Canonical specification for the touched module
Preconditions
- Run
git status --short --branch. - Preserve unrelated user changes.
- Decide whether the change is a major feature requiring a branch.
Step-by-step procedure
- Establish the smallest coherent scope.
- Read current implementation and related docs.
- Add or update tests before claiming behavior.
- Implement within the documented module boundary.
- Update relevant docs in the same commit.
- Run full verification.
- Stage explicit paths and review the staged diff.
- Commit with a Conventional Commit message.
Required verification
cargo fmt --all -- --check
cargo clippy --workspace --all-targets --all-features -- -D warnings
cargo test --workspace --all-features
cargo run --quiet --bin repo-guard -- check
git diff --check
Documentation updates
Use the update matrix in docs/development/documentation-policy.md. Do not use
CHANGELOG.md as a substitute for the canonical document.
Commit requirements
Use explicit path staging. Review git diff --cached --stat and
git diff --cached before committing.
Completion report
Report branch, commit hash, branch cleanup status when merged, changed docs, commands run, and remaining risks.
Failure and rollback handling
Do not disable checks. If a change cannot pass, leave it uncommitted and report the exact blocker.
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 · 69 lines · 28 tokens per session scan A 24eca3f9399e
implement-change is a skill published in the GitHub repository SioYooo/RepoGrammar (0 stars, last pushed yesterday), licensed MIT. It adds 28 tokens to every session and 411 once invoked, about $0.0001 per session on Opus 5.5. 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.
Other skills, from other repositories
anarlog
Query Anarlog meetings, notes, summaries, transcripts, participants, action items, and recurring history, or import a local recording. Use when a user asks about their Anarlog meeting data or needs meeting context for another task.
reflect
Use Recall Reflect to review AI coding workflow history as a conversation-first timeline and discuss observed patterns before changing behavior. Trigger when the user asks to reflect on a project, review AI coding workflow, inspect workflow friction, discuss repeated corrections, review handoffs, or explore possible…
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…
repolink
Use when locating a registered or related local repository, or when discovering commands registered through RepoLink. Do not use for source-tree, symbol, or architecture mapping.
simplicio-compress
Cut output and memory tokens without losing meaning — terse prose levels (caveman-style) that preserve code/paths/URLs byte-for-byte, plus a one-time memory/doc compaction pass that pays back every future turn. Use when replies or worker reports are verbose, when standing context (CLAUDE.md/AGENTS.md/notes) is…
simplicio-prism
Route broad or ambiguous work across Simplicio Mapper, Fast, Dev CLI, Loop, and Runtime. Use when a request spans components, requires choosing the correct capability, needs an end-to-end workflow, or the agent is unsure which Simplicio skill to invoke. Prism classifies and composes; it does not execute mutations…