Agent skills
Skills you can use with AI coding agents, indexed from public GitHub repositories.
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cassandra-principal-engineer
Principal/Senior-level Cassandra playbook for data modeling, partition strategy, consistency, repair, compaction, and operating large-scale distributed wide-column systems.
Use when: designing Cassandra schemas, reviewing partition and consistency tradeoffs, operating clusters, or debugging latency and repair issues in production.
mOdrA40/claude-codex-skills-directory 4
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cockroachdb-principal-engineer
Principal/Senior-level CockroachDB playbook for distributed SQL design, transactions, multi-region topology, schema evolution, observability, and operational reliability.
Use when: designing geo-distributed systems, reviewing transaction semantics, hardening multi-region SQL workloads, or operating CockroachDB in production.
mOdrA40/claude-codex-skills-directory 4
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scylladb-principal-engineer
Principal/Senior-level ScyllaDB playbook for shard-aware data modeling, consistency, compaction, topology, performance tuning, and operating high-throughput distributed wide-column systems.
Use when: designing ScyllaDB schemas, tuning low-latency clusters, reviewing topology and repair posture, or operating ScyllaDB in production.
mOdrA40/claude-codex-skills-directory 4
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elasticsearch-principal-engineer
Principal/Senior-level Elasticsearch playbook for index design, search relevance, cluster operations, performance tuning, observability, and production reliability.
Use when: designing search workloads, reviewing mappings and analyzers, fixing shard/query bottlenecks, or operating Elasticsearch in production.
mOdrA40/claude-codex-skills-directory 4
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kafka-principal-engineer
Principal/Senior-level Kafka playbook for topic design, consumer groups, delivery semantics, partitioning, retention, observability, and operating event-driven systems at scale.
Use when: designing event streams, reviewing partition strategy, debugging lag/rebalance issues, or hardening Kafka in production.
mOdrA40/claude-codex-skills-directory 4
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rabbitmq-master
Ultimate RabbitMQ expertise skill for production-grade message broker architecture, implementation, and operations. Top 0.01% knowledge covering: (1) Advanced messaging patterns - Dead Letter Exchanges, Delayed Messages, Priority Queues, Consistent Hash Exchange, Sharding, (2) High Availability - Clustering, Quorum Queues, Stream Queues, Federation, Shovel, (3) Performance Engineering - prefetch tuning, connection pooling, batch publishing, memory optimization, flow control, (4) Security - TLS/mTLS, OAuth2, LDAP, certificate rotation, (5) Monitoring - Prometheus metrics, custom health checks, anomaly detection, (6) Troubleshooting - memory alarms, network partitions, queue backlogs, consumer starvation, (7) Multi-tenancy - vhost design, resource limits, isolation patterns, (8) Event-driven architectures - CQRS, Event Sourcing, Saga patterns with RabbitMQ. Use when: building messaging systems, debugging RabbitMQ issues, optimizing performance, designing HA architectures, implementing advanced patterns, production hardening, capacity planning, migration strategies.
mOdrA40/claude-codex-skills-directory 4
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flink-principal-engineer
Principal/Senior-level Flink playbook for stream processing architecture, stateful pipelines, event-time correctness, checkpointing, scaling, and operating low-latency data platforms.
Use when: designing streaming systems, reviewing stateful Flink jobs, tuning event-time pipelines, or operating Flink in production.
mOdrA40/claude-codex-skills-directory 4
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rust-principal-engineer
Principal/Senior-level Rust playbook for architecture, ownership, async systems, error handling, observability, security, testing, and production readiness.
Use when: designing Rust services or CLIs, reviewing unsafe/concurrent code, debugging panics and performance regressions, hardening APIs, or preparing a codebase for production.
mOdrA40/claude-codex-skills-directory 4
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erlang-elixir-principal-engineer
Principal/Senior-level Erlang and Elixir playbook for highly available backend systems, OTP design, actor-model concurrency, reliability, observability, and production operations.
Use when: building or reviewing Elixir or Erlang services, designing OTP supervision trees, handling high-concurrency workloads, debugging distributed failures, improving resilience, or preparing BEAM systems for production.
mOdrA40/claude-codex-skills-directory 4
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zig-principal-engineer
Principal/Senior-level Zig playbook for backend services, systems-aware APIs, memory management, concurrency, performance, reliability, observability, and production operations.
Use when: building or reviewing Zig services, designing low-level backend components, optimizing latency-sensitive services, hardening memory-sensitive systems, debugging allocator issues, or preparing Zig applications for production.
mOdrA40/claude-codex-skills-directory 4
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bunjs-mastery-skill
mOdrA40/claude-codex-skills-directory 4
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golang-mastery-skill
Principal/Senior-level Go (Golang) playbook for architecture, idiomatic code, concurrency, testing, performance, reliability, security, observability, and production readiness.
Use when: designing services/APIs/CLIs, doing large refactors, running code reviews, debugging races/leaks, tuning performance, hardening security, and shipping to production.
mOdrA40/claude-codex-skills-directory 4
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ai-ml-principal-engineer
Principal/Senior-level AI/ML playbook for production machine learning systems, LLM-enabled backends, model serving, training pipelines, evaluation discipline, reliability, security, and MLOps.
Use when: designing ML services, building or reviewing training/inference code, selecting model architectures, fine-tuning transformers, hardening model APIs, debugging performance or correctness issues, or preparing ML systems for production.
mOdrA40/claude-codex-skills-directory 4
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tekton-principal-engineer
Principal/Senior-level Tekton playbook for Kubernetes-native CI/CD pipelines, task design, execution isolation, supply-chain integrity, and platform-scale pipeline operations.
Use when: designing pipeline platforms on Kubernetes, reviewing Tekton tasks, securing build flows, or operating multi-tenant CI/CD systems.
mOdrA40/claude-codex-skills-directory 4
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argocd-principal-engineer
Principal/Senior-level Argo CD playbook for GitOps architecture, application boundaries, sync safety, tenancy, policy, and operating continuous delivery platforms on Kubernetes.
Use when: designing GitOps delivery, reviewing Argo CD app structure, operating multi-team clusters, or hardening declarative deployment workflows.
mOdrA40/claude-codex-skills-directory 4
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opentelemetry-principal-engineer
Principal/Senior-level OpenTelemetry playbook for traces, metrics, logs, semantic conventions, collector pipelines, sampling, data governance, and production observability architecture.
Use when: instrumenting services, designing collector topologies, standardizing telemetry, debugging context propagation, or building large-scale observability platforms.
mOdrA40/claude-codex-skills-directory 4
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prometheus-principal-engineer
Principal/Senior-level Prometheus playbook for metrics design, TSDB operations, alerting quality, scaling, federation, remote write, and production observability architecture.
Use when: designing metrics strategy, reviewing alerting posture, operating Prometheus at scale, debugging scrape/query/cardinality issues, or building multi-cluster observability platforms.
mOdrA40/claude-codex-skills-directory 4
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loki-principal-engineer
Principal/Senior-level Loki playbook for log architecture, label design, retention, query performance, tenancy, and operating cost-efficient log platforms at scale.
Use when: designing logging platforms, reviewing label strategy, tuning queries, managing retention, or operating Loki in production.
mOdrA40/claude-codex-skills-directory 4
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docker-principal-engineer
Principal/Senior-level Docker playbook for image design, build performance, runtime security, networking, debugging, CI/CD delivery, and production container operations.
Use when: containerizing services, reviewing Dockerfiles, optimizing image supply chain, debugging container incidents, or designing container-based delivery workflows.
mOdrA40/claude-codex-skills-directory 4
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opa-gatekeeper-principal-engineer
Principal/Senior-level OPA Gatekeeper playbook for policy architecture, constraint design, admission control safety, multi-tenant governance, and operating policy enforcement on Kubernetes at scale.
Use when: designing cluster policy, reviewing constraints, hardening platform governance, or operating Gatekeeper in multi-team environments.
mOdrA40/claude-codex-skills-directory 4
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tempo-principal-engineer
Principal/Senior-level Tempo playbook for trace architecture, storage strategy, sampling-aware operations, tenant governance, and operating large-scale trace backends.
Use when: designing trace storage, correlating observability workflows, tuning Tempo, or operating trace platforms in production.
mOdrA40/claude-codex-skills-directory 4
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pulumi-principal-engineer
Principal/Senior-level Pulumi playbook for programmatic IaC architecture, stack design, policy, state safety, multi-language tradeoffs, and production infrastructure delivery.
Use when: designing Pulumi platforms, reviewing stack organization, operating shared IaC workflows, or balancing code power against infra safety.
mOdrA40/claude-codex-skills-directory 4
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vault-principal-engineer
Principal/Senior-level Vault playbook for secrets architecture, authn/authz, dynamic secrets, PKI, tenancy, and operating secure secret-management platforms in production.
Use when: designing secret platforms, reviewing auth methods and policies, operating Vault clusters, or hardening access to sensitive systems.
mOdrA40/claude-codex-skills-directory 4
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helm-principal-engineer
Principal/Senior-level Helm playbook for chart design, release safety, templating discipline, values governance, upgrade strategy, and Kubernetes application delivery at scale.
Use when: designing reusable charts, reviewing release workflows, operating multi-team chart ecosystems, or hardening Kubernetes deployment standards.
mOdrA40/claude-codex-skills-directory 4