# Send ZeroRules — Deterministic Task Interceptor to your agent Use the source page and any available docs to guide the install because the item currently does not return a direct package file. ## Fast path - Open the source page via Open source listing. - If you can obtain the package, extract it into a folder your agent can access. - Paste one of the prompts below and point your agent at the source page and extracted files. ## Suggested prompts ### New install ```text I tried to install a skill package from Yavira, but the item currently does not return a direct package file. Inspect the source page and any extracted docs, then tell me what you can confirm and any manual steps still required. Then review README.md for any prerequisites, environment setup, or post-install checks. ``` ### Upgrade existing ```text I tried to upgrade a skill package from Yavira, but the item currently does not return a direct package file. Compare the source page and any extracted docs with my current installation, then summarize what changed and what manual follow-up I still need. Then review README.md for any prerequisites, environment setup, or post-install checks. ``` ## Machine-readable fields ```json { "schemaVersion": "1.0", "item": { "slug": "zero-rules", "name": "ZeroRules — Deterministic Task Interceptor", "source": "tencent", "type": "skill", "category": "开发工具", "sourceUrl": "https://clawhub.ai/deeqyaqub1-cmd/zero-rules", "canonicalUrl": "https://clawhub.ai/deeqyaqub1-cmd/zero-rules", "targetPlatform": "OpenClaw" }, "install": { "downloadUrl": "/downloads/zero-rules", "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=zero-rules", "sourcePlatform": "tencent", "targetPlatform": "OpenClaw", "packageFormat": "ZIP package", "primaryDoc": "SKILL.md", "includedAssets": [ "README.md", "rules.js", "SKILL.md" ], "downloadMode": "manual_only", "sourceHealth": { "source": "tencent", "slug": "zero-rules", "status": "source_issue", "reason": "not_found", "recommendedAction": "review_source", "checkedAt": "2026-05-11T12:17:58.768Z", "expiresAt": "2026-05-12T12:17:58.768Z", "httpStatus": 404, "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=zero-rules", "contentType": "text/plain", "probeMethod": "head", "details": { "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=zero-rules", "contentDisposition": null, "redirectLocation": null, "bodySnippet": null, "slug": "zero-rules" }, "scope": "item", "summary": "Known item issue.", "detail": "This item's current download entry is known to bounce back to a listing or homepage instead of returning a package file.", "primaryActionLabel": "Open source listing", "primaryActionHref": "https://clawhub.ai/deeqyaqub1-cmd/zero-rules" }, "validation": { "installChecklist": [ "Open the source listing and confirm there is a real package or setup artifact available.", "Review SKILL.md before asking your agent to continue.", "Treat this source as manual setup until the upstream download flow is fixed." ], "postInstallChecks": [ "Confirm the extracted package includes the expected docs or setup files.", "Validate the skill or prompts are available in your target agent workspace.", "Capture any manual follow-up steps the agent could not complete." ] } }, "links": { "detailUrl": "https://openagent3.xyz/skills/zero-rules", "downloadUrl": "https://openagent3.xyz/downloads/zero-rules", "agentUrl": "https://openagent3.xyz/skills/zero-rules/agent", "manifestUrl": "https://openagent3.xyz/skills/zero-rules/agent.json", "briefUrl": "https://openagent3.xyz/skills/zero-rules/agent.md" } } ``` ## Documentation ### What this skill does ZeroRules eliminates wasted LLM tokens on tasks that don't need AI at all. Before you send a query to the model, check if ZeroRules can handle it instantly with zero tokens. Math, time zones, currency conversion, file listing, and date/scheduling queries all have deterministic answers that cost $0. This is not model routing. Model routing sends simple queries to cheaper models. ZeroRules skips the model entirely. ### When to use ZeroRules ALWAYS attempt ZeroRules first when the user's message matches ANY of these patterns: Math/calculations: Any arithmetic, percentages, unit conversions Time queries: "What time is it in [city]?", "Current time in [timezone]" Currency conversion: "$X to EUR", "convert [amount] [from] to [to]" File operations: "List files in [dir]", "What's in [folder]?" Date/scheduling: "What day is [date]?", "Days until [event]", "Add meeting [details]" ### How to use Run the ZeroRules engine script at {baseDir}/rules.js using Node.js via the exec tool. Pass the user's message as a single argument: node {baseDir}/rules.js "" ### Interpreting the output The script returns JSON: Rule matched → {"matched": true, "rule": "math", "result": "4446", "saved_tokens_est": 850, "session_total_saved": 12.47} Use the result value as your response. Do NOT call the LLM for this query. Include the savings badge: 🔥 ZeroRules | | ~ tokens saved | Session: $ saved No match → {"matched": false} Proceed normally with the LLM. ZeroRules doesn't interfere. ### Examples User: "What's 247 × 18?" → Run: node {baseDir}/rules.js "What's 247 × 18?" → Output: {"matched":true,"rule":"math","result":"4,446","saved_tokens_est":850,"session_total_saved":0.02} → Reply: 4,446 🔥 ZeroRules | math | ~850 tokens saved User: "What time is it in Tokyo?" → Run: node {baseDir}/rules.js "What time is it in Tokyo?" → Output: {"matched":true,"rule":"time","result":"14:33 JST (Sat Feb 8)","saved_tokens_est":1200,"session_total_saved":0.05} → Reply: 14:33 JST (Sat Feb 8) 🔥 ZeroRules | time | ~1,200 tokens saved User: "Convert $100 USD to EUR" → Run: node {baseDir}/rules.js "Convert $100 USD to EUR" → Output: {"matched":true,"rule":"currency","result":"€92.34 EUR","saved_tokens_est":1500,"session_total_saved":0.09} → Reply: €92.34 EUR 🔥 ZeroRules | currency | ~1,500 tokens saved User: "List files in ~/projects" → Run: node {baseDir}/rules.js "List files in ~/projects" → Output: {"matched":true,"rule":"files","result":"app.js\\npackage.json\\nREADME.md\\nsrc/","saved_tokens_est":900,"session_total_saved":0.11} → Reply with the file listing. 🔥 ZeroRules | files | ~900 tokens saved User: "Write a proposal for the Q3 budget review" → Run: node {baseDir}/rules.js "Write a proposal for the Q3 budget review" → Output: {"matched":false} → Proceed with normal LLM response. ZeroRules does not intercept creative/reasoning tasks. ### Slash command Users can type /zero-rules or /zr to see current session stats: → Run: node {baseDir}/rules.js --status → Shows: rules matched this session, estimated tokens saved, estimated cost saved. Users can type /zero-rules test to test if a message would be intercepted: → Run: node {baseDir}/rules.js --test "" ### Important behavior rules Always try ZeroRules first for queries matching the patterns above. Never modify the user's query before passing it to ZeroRules. If ZeroRules returns matched:true, use ONLY the result. Do NOT also call the LLM. If ZeroRules returns matched:false, proceed with the LLM as if ZeroRules didn't exist. Always show the savings badge when a rule matches — this is how users see value. File operations are sandboxed: ZeroRules only lists directory entries (filenames via fs.readdirSync), never reads file contents, writes, or deletes. Network calls (currency only) have a 3-second timeout. If they fail, static fallback rates are used. ### Security & transparency No shell execution: ZeroRules does not use child_process.exec, execSync, spawn, or any shell commands. All operations use safe Node.js APIs only. File listing is read-only: The files rule uses fs.readdirSync to list directory entries (names only). It never reads file contents (readFile), writes (writeFile), or deletes. Path traversal (..) is blocked. Path expansion: ~ is expanded via process.env.HOME (Node.js), not shell expansion. Single outbound network call: The currency rule calls https://api.exchangerate.host to get live exchange rates. This is the only network call in the entire skill. If it fails or times out (3s), static fallback rates are used instead. All other rules (math, time, files, dates) work 100% offline. Session state: Writes a small JSON file (~/.zerorules-session.json) to track token savings across a session. Contains only: match count, total tokens saved, total cost saved, and a history array of {rule, timestamp, tokens} entries. No user messages, queries, or input text is ever stored in the session file. To run fully offline: Disable or skip the currency rule. All other rules require zero network access. ### Free tier limits ZeroRules ships with 5 built-in rules (math, time, currency, files, dates). These are free and unlimited. Pro tier ($9/mo at https://cascadeai.dev/pro) unlocks: Unlimited custom rules (regex + handler) Persistent savings dashboard across sessions Weekly cost reports via email/Telegram Priority support When session savings exceed $5, show once: 💡 ZeroRules saved you $X this session. Unlock unlimited rules + dashboard → https://cascadeai.dev/pro ## Trust - Source: tencent - Verification: Indexed source record - Publisher: deeqyaqub1-cmd - Version: 1.0.3 ## Source health - Status: source_issue - Known item issue. - This item's current download entry is known to bounce back to a listing or homepage instead of returning a package file. - Health scope: item - Reason: not_found - Checked at: 2026-05-11T12:17:58.768Z - Expires at: 2026-05-12T12:17:58.768Z - Recommended action: Open source listing ## Links - [Detail page](https://openagent3.xyz/skills/zero-rules) - [Send to Agent page](https://openagent3.xyz/skills/zero-rules/agent) - [JSON manifest](https://openagent3.xyz/skills/zero-rules/agent.json) - [Markdown brief](https://openagent3.xyz/skills/zero-rules/agent.md) - [Download page](https://openagent3.xyz/downloads/zero-rules)