dayfinggg/openai-codex-agent-skills

Current Codex instructions, 39 engineering skills, and portable settings with Windows and Linux installers.

8Stars on the repository
39Mods indexed here, across every type
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tdd

01

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Implement behavior test-first or fix a defect through a failing behavior test and the smallest passing change.

not rated 8 changed today A 22 tokens original MIT

api-contract-change

02

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Implement or modify HTTP API contracts with validation, errors, authorization, and client-compatibility checks. Use for endpoint, request schema, response, or API middleware changes.

not rated 8 today A 38 tokens original MIT

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Change application or Redis caching with key, invalidation, concurrency, failure, and data-isolation verification. Use for cache-aside, TTL, cache stampedes, or stale application data.

not rated 8 today A 42 tokens original MIT

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Secure changed backend boundaries while preserving access policy and accepted events. Use for authentication, authorization, webhooks, uploads, external requests, or security-sensitive API changes.

not rated 8 today A 36 tokens original MIT

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Change queue consumers, scheduled tasks, or background workers with duplicate-delivery, retry, timeout, shutdown, and commit-boundary verification.

not rated 8 today A 31 tokens original MIT

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Diagnose failed CI jobs from the exact commit, primary error, environment, and reproduction. Use for failed pipelines, flaky checks, or local-versus-CI discrepancies.

not rated 8 today A 41 tokens original MIT

code-review

07

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Review code changes, branches, or PRs against requirements and repository standards. Select general review or security-focused differential review according to the requested task and risk.

not rated 8 today A 34 tokens original MIT

codebase-design

08

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Design or improve a module interface, dependency seam, or test boundary for the requested change without speculative abstraction.

not rated 8 today A 25 tokens original MIT

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Plan and validate schema migrations with lock, data, application-compatibility, rollout, and restoration checks. Use for migration files or schema-change deployment.

not rated 8 today A 36 tokens original MIT

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Diagnose slow SQL, lock waits, or connection exhaustion using actual queries, plans, and workload evidence. Use for database latency and throughput defects, not routine schema design.

not rated 8 today A 40 tokens original MIT

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Prepare or verify an application release with artifact identity, configuration, migrations, readiness, and restoration checks. Use for deployment or post-release verification.

not rated 8 today A 32 tokens original MIT

diagnosing-bugs

12

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Diagnose a difficult reproducible bug or performance regression through a feedback loop, competing hypotheses, and regression proof.

not rated 8 today A 27 tokens copy · 84% MIT

docker

13

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Containerize an application, write or optimize Dockerfiles and image builds, or configure and diagnose Docker Compose services.

not rated 8 today A 24 tokens original MIT

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Change GitHub Actions with event, permission, dependency, cache, artifact, and untrusted-input checks. Use for workflow YAML or repository action changes.

not rated 8 today A 34 tokens original MIT

go-change

15

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Change Go packages or services with context, goroutine, resource, and race verification. Use for Go implementation, debugging, and concurrency changes.

not rated 8 today A 31 tokens original MIT

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Verify HTTP caching and cache-header changes across browsers, proxies, and applications. Use for Cache-Control, Vary, ETag, Nginx cache, revalidation, or personalized-response caching.

not rated 8 today A 45 tokens original MIT

incident-diagnosis

17

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Investigate application errors, latency regressions, or outages using a bounded timeline and corroborated logs, metrics, traces, and changes. Use for backend or web incidents.

not rated 8 today A 39 tokens original MIT

mongodb

18

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Design MongoDB schemas, write queries, optimize query performance, or diagnose application client connections. Select the relevant workload and version-matched procedure.

not rated 8 today A 30 tokens original MIT

node-backend-change

19

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Change Node.js backend behavior with HTTP, cancellation, timeout, streaming, and resource-lifecycle verification. Use for APIs, middleware, and Node service lifecycle work.

not rated 8 today A 37 tokens original MIT

orm-query-review

20

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Review ORM query correctness and performance, including EF Core specifics. Check generated SQL, loading, pagination, transactions, tracking, and concurrent updates.

not rated 8 today A 32 tokens original MIT

php-change

21

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Implement, fix, refactor, or test PHP code and diagnose PHP tool or dependency-version mismatches. Preserve project compatibility. Excludes standalone Composer changes and PHP-FPM operations.

not rated 8 today A 39 tokens original MIT

php-composer-change

22

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Repair Composer or change PHP dependencies with lockfile, platform, and transitive-diff verification. Use for composer.json, composer.lock, dependency resolution, or installation failures.

not rated 8 today A 39 tokens original MIT

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Diagnose PHP-FPM and OPcache for 502/504 errors, slow requests, worker exhaustion, or stale code after deployment. Use for PHP runtime, php.ini, and FPM pool issues.

not rated 8 today A 49 tokens original MIT

postgres

24

dayfinggg/openai-codex-agent-skills

Skill Claude CodeCodex

Inspect PostgreSQL schemas or work on table design, SQL, indexes, extensions, search, or migrations. Select version-matched procedures for the actual database task.

not rated 8 today A 34 tokens original MIT

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