Engineering handbook for AI coding agents - rules, skills, slash commands, MCP server, and hooks for Cursor, Claude Code, and Codex
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Independent, read-only verification workflow for consequential AI-generated changes. Use when security, IAM, production infrastructure, destructive migrations, broad architecture, sensitive data, financial logic, or explicit assurance requirements need a verifier distinct from the implementing model or tool. Binds…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Infrastructure as Code best practices for Terraform, Docker, Ansible, and CloudFormation. Covers secure-by-default configurations, multi-stage builds, state management, and modular patterns. Use when working with .tf, Dockerfile, docker-compose.yml, .yaml/.yml Ansible files, CloudFormation templates, or when asking…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Kubernetes, Helm, and Argo CD best practices for container orchestration. Covers deployments, services, RBAC, resource management, Helm charts, GitOps synchronization, Podtrace runtime debugging, and production patterns. Use when working with Kubernetes manifests, Helm charts, Argo CD sync policies, kubectl commands…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Model Context Protocol (MCP) server development and AI/ML integration patterns. Covers MCP server implementation, tool design, resource handling, and LLM integration best practices. Use when developing MCP servers, creating AI tools, integrating with LLMs, or when asking about MCP protocol, prompt engineering, or AI…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Design and review persistent memory and knowledge systems for AI agents, including durable project knowledge, team knowledge bases, retrieval, provenance, conflict handling, retention, and tenant isolation. Use when architecting agent memory across sessions, deciding where knowledge should persist, or reviewing memory…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Structured multi-advisor review of an architecture, vendor, strategy, or design decision. Each advisor (data, architecture, business value, operations, risk, executive sponsor, etc.) gives a position vote, a one-sentence pro and con, and the sharp question they would ask. Every assertion carries a "what worked" and…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Networking and transport-layer architecture for production services. TCP keepalive, head-of-line blocking, TTFB budget, HTTP/1.1 vs HTTP/2 vs HTTP/3, when to choose gRPC/Protobuf over REST/JSON, connection pooling, long-lived connections (websockets / SSE / gRPC streaming), and CDN-to-origin patterns. Use when…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Designs and reviews production observability using structured logging, NDJSON, metrics, SLIs and SLOs, distributed tracing, OpenTelemetry, dashboards, alerts, telemetry pipelines, redaction, retention, and cost controls. Use when instrumenting services, defining log schemas, correlating microservices, designing…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Okta Workforce Identity playbook. Workflows for SSO, policy hardening, SCIM, IdP migration, troubleshooting, key rotation, admin audit, and Cross App Access. Use when designing, operating, or auditing Okta orgs, apps, lifecycle, Workflows, ASA, Admin API, terraform-provider-okta, XAA, ID-JAG, resource server…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Add client-side PDF export to a web app using jspdf + html2canvas-pro. Use when the user asks to download, save, or export the current page, a report, a slide deck, a chart, or any DOM element as a PDF. Covers single-element snapshots and multi-page documents with TOC bookmarks. No server, no Puppeteer at runtime …
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Python development standards for code review and generation. Covers Python 3.14+ patterns including template strings (t-strings), deferred annotations, free-threading, type hints, async/await, testing with pytest, package management with uv, AWS Lambda/boto3 patterns, and Pydantic validation. Use when working with .py…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Delivers narrative interactive architecture diagrams using React, TypeScript, Tailwind, and @xyflow/react (React Flow): node and edge patterns, optional Cloudflare orange shell grouping, routing, and verification. Use when adding or editing React Flow diagram components (Diagram.tsx suffix convention), files under…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Build sandboxed applications for secure code execution. Load when building AI code execution, code interpreters, CI/CD systems, interactive dev environments, or executing untrusted code. Covers Sandbox SDK lifecycle, commands, files, code interpreter, and preview URLs. Biases towards retrieval from Cloudflare docs…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Advanced Bash automation patterns for production-grade scripts and automation workflows. Covers retry logic, lock files, signal handling, advanced error handling, performance optimization, testing with BATS, and cross-platform compatibility. Use when building automation scripts, deployment tools, CI/CD helpers, or…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Security best practices (OWASP Top 10) and testing strategies for software development. Covers secure coding, vulnerability prevention, testing pyramid, API design, and observability patterns. Use when reviewing code for security, writing tests, designing APIs, or when asking about security vulnerabilities, testing…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Designs and reviews production resilience for service dependencies using deadlines, timeouts, bounded retries, circuit breakers, bulkheads, backpressure, load shedding, rate limits, fallbacks, idempotency, and recovery testing. Use when the user mentions circuit breaker, bulkhead, retries, cascading failure, partial…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Build single-file zero-dependency interactive HTML dashboards for analytical artifacts that must be emailable, offline-viewable, or airgap-safe. Inline vanilla-SVG charts, no CDN, no remote scripts, no web fonts, no images. Useful for client deliverables, security audit reports, executive dashboards, post-mortems…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Patterns for composing multiple Cursor / Agent Skills into orchestrated workflows. Covers slash commands that chain skills, project-vs-personal scope resolution, sibling-skill auto-detection with graceful degradation, sequential vs parallel chaining, HITL gates between phases, parameter passing, and error handling.…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Biweekly maintenance workflow for improving Agent Skills, eval suites, and matching rules in this handbook. Use when the user asks to review, refresh, audit, improve, harden, evaluate, or update skills/rules, or when doing a scheduled every-2-weeks quality pass over skills. Finds rule/skill/eval drift, stale examples…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Snowflake playbook. Workflows for RBAC rollout, warehouse sizing and cost control, secure data sharing, Streams/Tasks/Snowpipe pipelines, permissions audit, and Time Travel / Fail-safe recovery. Use when designing, operating, or auditing Snowflake.
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Designs and reviews production software systems using requirements, SLOs, capacity estimates, service and data boundaries, consistency, scaling, reliability, security, observability, cost, and migration plans. Use for system design, architecture review, scalability, capacity planning, high availability, multi-tenancy…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
TypeScript and JavaScript development standards for modern web and Node.js development. Covers strict TypeScript configuration, type safety patterns, ESM modules, async/await, testing with Jest/Vitest, and security best practices. Use when working with .ts, .tsx, .js, .mjs files, package.json, tsconfig.json, or when…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Analyzes web performance using Chrome DevTools MCP. Measures Core Web Vitals (LCP, INP, CLS) and supplementary metrics (FCP, TBT, Speed Index), identifies render-blocking resources, network dependency chains, layout shifts, caching issues, and accessibility gaps. Use when asked to audit, profile, debug, or optimize…
d-padmanabhan/agent-engineering-handbook
Skill Claude CodeCodex
Refresh a project knowledge base from web research with strict tool-call budgets, cross-referenced sources, atomic file swaps, and rollback-on-failure. Use when refreshing a KB-backed analysis (vendor facts, compliance posture, market data, security advisories), running long web-research workflows that must be…
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