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 skills/ruddercode/rudder/check-changed-foldersnpx skills add RudderCode/Rudder --skill check-changed-foldersgit clone --depth 1 https://github.com/RudderCode/RudderWrote 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/ruddercode/rudder/check-changed-folders)<a href="https://agentmods.dev/skills/ruddercode/rudder/check-changed-folders"><img src="https://agentmods.dev/badge/skills/ruddercode/rudder/check-changed-folders.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 | $0.00102 | $0.01108 |
| Opus 5 | $0.00051 | $0.00554 |
| Sonnet 5 | $0.00020 | $0.00222 |
| Haiku 4.5 | $0.00010 | $0.00111 |
Grade A, and why
check-changed-folders 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.
How it starts
The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Check Changed Folders
Identify what changed on the branch, verify provider parity, the centralized agent-instruction layout, and agent attribution, run the package checks, and report pass/fail status with actionable failure output. The root npm scripts validate the core package and the Rudder plugin workspace. Checks are therefore repo-wide rather than per-package.
Workflow
- Identify changed files against
main, including local staged/unstaged changes:
git fetch origin main
git diff --name-only origin/main...HEAD
git diff --name-only
git diff --name-only --cached
If anything under src/, bin/, test/, ui/, .claude-plugin/, .codex-plugin/, hooks/, skills/, or a build/config file (package.json, tsconfig*.json, .mcp.json, .github/) changed, the package checks below apply.
- Verify the centralized agent-instruction layout before running checks:
AGENTS.mdis the canonical repository guidance..agents/skills/is the only reusable-workflow source. Do not add command aliases or edit tool-specific symlinks.- Ensure that every skill has a corresponding
skills/<skill-name>/agents/openai.yamldetailing its Codex display name, short description, and default prompt. - Confirm the compatibility links resolve correctly:
.claude/skills->../.agents/skills.codex/skills->../.agents/skills
- If any link is missing or resolves outside
.agents/, mark the check as failed and report the broken path.
- Verify provider parity.
- Treat Claude and Codex as supported providers for the same Rudder plugin package.
- When a change adds, removes, or modifies a provider-facing component—manifest metadata, skills, hooks, MCP servers, apps, UI, or packaged artifacts—inspect both provider manifests and runtime paths.
- Require equivalent discovery, launch behavior, packaged resources, and user-facing capability across providers. Provider-specific schema or environment-variable differences are allowed, but they must remain explicit implementation details rather than functional gaps.
- Add or update a regression assertion in
test/plugin-package.test.tsor the relevant runtime test that exercises both provider paths. If provider-facing behavior changes without parity coverage, fail this check. - Permit a provider-specific exception only when the user explicitly requests it or the provider cannot support the capability. Report the reason, the affected provider, and the test that protects the supported behavior.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 84 lines · 102 tokens per session scan A 3f4fd015c111
check-changed-folders is a skill published in the GitHub repository RudderCode/Rudder (23 stars, last pushed today), licensed Apache-2.0. It adds 102 tokens to every session and 1,108 once invoked, about $0.0005 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
html-ppt-zhangzara-coral
OpenDesign's community-growth campaign across GitHub, Discord, and X: the loops, the content calendar, and the pipeline math. Built as a decision-grade marketing & GTM deck for growth team, community lead.
hr-onboarding
A new-hire onboarding plan as a single page — first week schedule, buddy + manager intro, learning track, equipment checklist, and "you're set when…" outcomes. Use when the brief mentions "onboarding", "new hire", "first week plan", or "入职".
html-ppt-hermes-cyber-terminal
OpenDesign + BYOK: choosing and wiring your own model, hands-on — cost, quality, and the routing decision. Built as a decision-grade AI literacy deck for engineers, IT, applied-AI teams.
html-ppt-taste-brutalist
16:9 HTML deck in tactical-telemetry / CRT-terminal taste. Deactivated-CRT charcoal slides, white-phosphor monospace, hazard-red accent, scanline overlay, ASCII syntax, density over decoration. Distilled from Leonxlnx/taste-skill brutalist-skill (Tactical Telemetry mode).
deepstream-sop
Use this skill when building, deploying, evaluating, debugging, or measuring latency for the DeepStream SOP Inference Microservice — a GPU-accelerated FastAPI service that detects whether operators perform assembly-line steps in order via event boundary detection (GEBD) plus VLM classification. Trigger even if the…
cupynumeric-migration-readiness
Pre-migration readiness assessor for porting NumPy to cuPyNumeric. Use BEFORE substantial porting work begins when the user asks whether code will scale on GPU, whether they should migrate to cuPyNumeric, which NumPy patterns transfer cleanly, what must be refactored before porting, or mentions pre-port assessment…