d-padmanabhan

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Build AI agents on Cloudflare Workers using the Agents SDK. Load when creating stateful agents, durable workflows, real-time WebSocket apps, scheduled tasks, MCP servers, chat applications, voice agents, or browser automation. Covers Agent class, state management, callable RPC, Workflows, durable execution, queues…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

AWS IAM deep-dive skill - principal types, policy evaluation, STS assume role, SCP guardrails, KMS key policies/grants, and AccessDenied debugging. Use when designing AWS authz/authn, cross-account access, or troubleshooting IAM/KMS/SCP AccessDenied errors.

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Bash scripting best practices for production-grade scripts, CLI tools, and Makefiles. Covers strict mode, error handling, portability, performance patterns, and argument parsing. Use when working with .sh files, Makefiles, shell scripts, or when asking about Bash, shell scripting, CLI design, or command-line tools.

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex needs its repo

GitHub Actions best practices for CI/CD workflows. Covers security (permissions, secrets), performance (caching, matrix builds), reusable workflows, and common patterns for testing, building, and deploying. Use when working with .github/workflows/.yml files, GitHub Actions, or when asking about CI/CD pipelines and…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Cloud platform best practices for AWS, Azure, GCP, and Cloudflare. Covers Zero Trust architecture, IAM patterns, EKS/AKS/GKE configurations, serverless patterns, and multi-cloud strategies. Use when working with cloud infrastructure, AWS services, Azure resources, GCP projects, Cloudflare Workers, or when asking about…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Send and receive transactional emails with Cloudflare Email Service (Email Sending + Email Routing). Use when building email sending (Workers binding or REST API), email routing, Agents SDK email handling, or integrating email into any app - Workers, Node.js, Python, Go, etc. Also use for email deliverability…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Workflow for crafting Cloudflare WAF rules across all three authoring interfaces - Terraform (cloudflareruleset), the Cloudflare Dashboard, and the Rulesets API. Covers both Custom Rules (actions like block, managedchallenge, log, skip-as-allow) and Managed-Rule Exceptions (action skip). Forces a docs-first read…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Workflow for building production-grade Cloudflare Workers in TypeScript - bootstrap, bindings and storage choice, routing (Hono + RPC via WorkerEntrypoint), testing with @cloudflare/vitest-plugin, gradual deployments, and common pitfalls. Use when adding a new Worker, adding endpoints to an existing Worker, choosing…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Comprehensive Cloudflare platform skill covering Workers, Pages, storage (KV, D1, R2), AI (Workers AI, Vectorize, Agents SDK), feature flags (Flagship), networking (Tunnel, Spectrum), security (WAF, DDoS), and infrastructure-as-code (Terraform, Pulumi). Use for any Cloudflare development task. Biases towards retrieval…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

End-to-end codebase security audit using the practical eight-layer model - secrets scanning (regex + entropy), SAST (with taint analysis), SCA (deps + license), data-flow / taint, semantic / code-property-graph, IaC, custom rules, and DAST validation. Produces a severity-ranked remediation plan, .env templates, and a…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex needs its repo

Docker and container best practices for production images, multi-stage builds, cache reuse, Docker Compose, health checks, scanning, publishing, and signing. Use when working with Dockerfiles, Containerfiles, Compose files, .dockerignore, image optimization, container security, docker push, Cosign, or Notation.

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Core coding standards and best practices for code review and generation. Provides KISS and measurable clean-code outcomes, guiding principles (DRY, YAGNI, SOLID), priority frameworks, tooling baselines, dependency management, and response formats. Use when reviewing code, generating code, asking about coding…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Data engineering workflows for designing and reviewing batch/streaming pipelines across Databricks, Snowflake, Confluent Kafka, and Teradata (contracts, backfills, quality, governance, cost, observability). Use when the user mentions data engineering, ETL/ELT, lakehouse/warehouse, Kafka, Databricks, Snowflake, or…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

PostgreSQL database design patterns, naming conventions, schema design, migrations, performance optimization, and security best practices. Use when designing database schemas, writing migrations, optimizing queries, or working with PostgreSQL-specific features like JSONB, full-text search, or RLS.

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex needs its repo

Databricks playbook. Workflows for workspace bootstrap, Unity Catalog migration, Lakeflow Spark Declarative Pipelines (formerly Delta Live Tables / DLT), Declarative Automation Bundles (formerly Databricks Asset Bundles), cluster policies/access modes, serverless SQL and jobs, Photon and cost tuning, governance audit…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Designs and reviews cross-service consistency using Transactional Outbox/Inbox, Saga orchestration, Saga choreography, compensating actions, idempotency, and eventual consistency. Use when the user mentions outbox, inbox, saga, orchestration, choreography, compensation, distributed transaction, dual write, CDC relay…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Documentation best practices including Markdown formatting, generated PNG diagrams, technical writing, ADRs, Docusaurus and MDX documentation sites, and open source standards. Use when writing documentation, README files, Markdown or MDX content, creating static diagrams for Markdown, configuring Docusaurus, or asking…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Designs and reviews software domain models using Domain-Driven Design, including subdomains, bounded contexts, context maps, ubiquitous language, aggregates, value objects, domain events, repositories, and anti-corruption layers. Use when business rules are complex, service or module boundaries are unclear, teams…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Create and review Cloudflare Durable Objects. Use when building stateful coordination (chat rooms, multiplayer games, booking systems), implementing RPC methods, SQLite storage, alarms, WebSockets, or reviewing DO code for best practices. Covers Workers integration, wrangler config, and testing with Vitest. Biases…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Framework-agnostic frontend architecture playbook. Workflows for picking rendering (SSG / SSR / SPA / ISR), setting bundle budgets, choosing state management (local / server / global), Core Web Vitals tracking + INP debugging, accessibility floor enforcement, testing pyramid, and supply-chain security. Use when…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex needs its repo

Safe Git workflows for commits, branches, worktrees, recovery, signing, and remote synchronization. Use when creating or reviewing commits, branching, pushing, rebasing, restoring files, resolving divergence, using worktrees, or asking how Git behaves.

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Go and Rust systems programming best practices for performance-critical, concurrent, and safe applications. Covers error handling, ownership/borrowing (Rust), context and goroutines (Go), testing patterns, and production deployment. Use when working with .go, .rs files, Cargo.toml, go.mod, or when asking about Go or…

d-padmanabhan/agent-engineering-handbook

Skill Claude CodeCodex

Principal-level IAM and security architecture advisor for identity protocols, IGA, PKI, PAM, secrets delivery, delegated access, and non-human identity. Use for architecture decisions, protocol deep dives, design reviews, threat models, or mentoring involving OAuth, OIDC, SAML, SCIM, mTLS, certificates, workload…

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…