aayushostwal

token-optimizer

Always-on token optimization rules. Apply on every response.

Use for codebase architecture mapping, coupling analysis, bounded-context discovery, monolith-split planning, and deployment-safety impact checks. Trigger on system-structure, service-boundary, dependency-map, or extraction questions, including "what breaks if deployed" validation requests. When in doubt, use this skill.

Code & Development Listed

nexus-code-review

Use for senior-level PR or diff review focused on correctness, regressions, security, migration risk, and deploy safety. Trigger on "review this PR", pasted diffs/branch links, or requests for merge-readiness and missed-issue analysis. When in doubt, use this skill.

nexus-debugging

Use when something is failing, regressing, or behaving unexpectedly and the goal is root-cause analysis, narrowest fix, and verification. Covers CI/CD, tests, runtime, deployment, and tooling failures. Output should be RCA + fix + prevention, not design options. When in doubt, use this skill.

codebase-navigator

Token-efficient codebase navigation skill. Use this whenever the user wants to explore, understand, or find anything in their codebase — folder structure, entry points, config files, where a feature lives, or a specific file by name/purpose. Triggers on: "navigate my codebase", "explore the project", "find the file for X", "where is the code for Y", "show me the structure", "what's the entry point", "find config files", "understand this repo". Prefer this over raw `view` calls on directories.

DevOps & Infrastructure Listed

nexus-infra

Use for infrastructure design, deployment architecture, cloud cost planning, or infra audits. Trigger on IaC reviews, "what should I deploy with", bill spikes, production-readiness checks, and paid-to-cheaper replacement requests. Route to design, evaluate, or free-alternatives flow. When in doubt, use this skill.

nexus

Use for persistent TODO capture, daily brief retrieval, and shared Codex/Claude operating rules. Trigger on remember/track/follow-up requests, "nexus add/show/brief", or policy/workflow questions across Slack, Outlook, and Jira contexts. When in doubt, use this skill.

nexus-observability

Use for correlated API failures, cascading errors, and distributed-system incident tracing. Trigger on multi-service error spikes, dependency-chain analysis, circuit-breaker events, or requests to identify origin service and blast radius from logs/metrics across components. When in doubt, use this skill.

nexus-performance

Use for memory, CPU, latency, and query-performance investigations, plus dependency-upgrade blast-radius analysis. Trigger on leak/OOM/profiling/regression reports or "what breaks if I upgrade X." Route to memory-leak or dependency-blast-radius workflow based on intent. When in doubt, use this skill.

nexus-planning

Use when direction is known and the user needs an execution-ready plan: scope, sequencing, dependencies, risks, validation, rollout, and rollback. Applies to features, migrations, infra, and architecture changes. Prefer exploring first only if approach selection remains uncertain. When in doubt, use this skill.

nexus-prd

Elite PRD generation skill. Use when the user wants to write, draft, create, or generate a Product Requirements Document (PRD). Trigger on: "write a PRD", "create a PRD", "draft requirements for", "help me write product requirements", "I have a feature idea", "turn this into a PRD", "product spec for", "requirements doc for", "I need a PRD for". Also trigger when given rough notes, a feature description, or a product concept and asked to structure it formally. When in doubt, use this skill.

nexus-reliability

Use for production incidents, outages, and service degradations, plus release-readiness gate checks. Trigger on 500 spikes, SLA breaches, latency/error surges, on-call alerts, rollback decisions, and RCA/post-mortem requests. Prioritize stabilization, timeline reconstruction, and evidence-led actions. When in doubt, use this skill.

nexus-shorts

Use to convert any input into a ready-to-record YouTube Shorts script. Trigger on requests for 30-second scripts, hooks, reels/short-form video copy, or pasted topics/articles/bullets/URLs needing concise high-retention narration with CTA. When in doubt, use this skill.

nexus-skill-writer-md

Use for creating, refactoring, or debugging skills and improving SKILL.md trigger quality. Trigger on "write/create/update/improve skill", trigger-miss complaints, pasted-skill feedback, or repeated workflows that should be skillized. Output production-ready skill structure and routing logic. When in doubt, use this skill.

Testing & QA Listed

nexus-testing

Use for flaky or nondeterministic tests, especially local-vs-CI inconsistencies. Trigger on intermittent failures, race/timing symptoms, retry-only greens, or unexplained skip/xfail markers. Output should isolate reproducible cause, narrowest durable fix, and prevention guidance. When in doubt, use this skill.

nexus-tutorial

Use for creating executable Jupyter tutorials and AI engineering walkthroughs with runnable cells. Trigger on requests for step-by-step guides, notebook-based teaching, or shareable code-first learning content. Prioritize reproducibility, clarity, and copy-paste-ready outputs. When in doubt, use this skill.