intermediate

Mastering advanced AI tooling in Codex

Configure Codex as a durable, repo-native agent using AGENTS.md, config.toml, skills, and safe automation patterns. Drive Codex to plan, patch, test, and resume work reliably across sessions utilizing latest features and subagents orchestration.

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Verified skills you'll gain

ADVANCED

Autonomous Workflow Automation

ADVANCED

Multi-Agent Systems and Coordination

INTERMEDIATE

Prompt Engineering and Optimization

Tools you'll use

Bash

Codex

Git

Python

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Course 2

Codex CLI Configuration, Skills, and Safe Workflows

5 lessons

23 practices

Configure Codex like a real developer tool by tuning core behavior in config.toml including web search while creating custom skills that work like project specific slash commands and building workflow templates for complex tasks. Learn to pass natural language arguments into commands and use inline shell capture with ! so your prompts include live repository state for grounded real time analysis.

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Course 3

Codex Skill Engineering

4 lessons

14 practices

Turn Codex into your reusable engineering playbook. Build skills that trigger automatically, enforce standards, and deliver bug triage, minimal patches, and test plans—so you ship faster with fewer surprises.

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Course 4

Codex Automation with the OpenAI SDK

4 lessons

16 practices

Use Codex beyond terminal chat by invoking it from scripts with the Codex CLI and the OpenAI Python SDK. Learn how the openai library powers Codex programmatically, and build small, deterministic AI-driven steps that save outputs as artifacts for developer tools and CI automation.

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Course 5

Codex Subagents & Multi-Agent Orchestration

4 lessons

18 practices

Scale from one assistant to a coordinated swarm. Run isolated subagents in parallel, enforce strict JSON outputs, and assemble gated pipelines with logs/retries—unlocking reliable, reviewable automation for big repos.

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From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11