Codex CLI API
Codex CLI API for OpenAI-Compatible Coding Agents
A Codex CLI API bridge between terminal-agent intent and API buyer intent: people searching this phrase usually need a working key, URL, model, cost, and troubleshooting path.
Troubleshooting copy for API key, token, URL, and limit searches
FAQ schema mirrors visible troubleshooting and setup answers
Codex CLI API base URL and model setup
The exact-match Codex CLI API query should land on a page that immediately names the three setup values: base URL, API key, and model. That gives the user a concrete API configuration path instead of sending them through generic product pages.
- Use /api/v1/codex as the frontend relay path for OpenAI-compatible traffic.
- Pair the URL with a customer API key and model name in setup snippets.
- Explain that chat completions and streaming are the primary compatibility targets.
Codex CLI API key, token, and login problems
People searching for Codex CLI API key not working, login API key, or token errors are usually close to conversion or support. The page should state which key belongs in client tools and which credentials must never be exposed.
- Client tools should use dashboard API keys only.
- Private owner-side OpenAI, ChatGPT, Codex, OAuth, and relay tokens stay server-side.
- Failed authentication should route users to key validation and billing status checks.
Codex CLI API cost and usage limits
Cost, quota, usage, and limit modifiers are commercial queries. The page should connect them to plan tiers and fair-use expectations without promising unlimited usage for coding agents.
- Use a free tier only for setup validation.
- Expose paid tiers for daily, heavy, and high-frequency agent workflows.
- Describe rate limits, queueing, concurrency, and upgrade paths as part of the product.
Codex API setup snippets
Copy the same base URL, API key, and model pattern into Codex CLI-style clients, Cursor, Cline, Open WebUI, curl, or custom OpenAI-compatible SDK calls.
Codex/API quickstart
Copy these Codex API values into Codex CLI-style tools, OpenAI-compatible SDKs, Cursor, Cline, or Open WebUI. The frontend endpoint validates your dashboard API key before forwarding to the private relay; the same account can also be used as a Codex usage subscription.
base_url
https://codexcliapi.com/api/v1/codexapi_key
cps_live_your_api_keymodel
gpt-5.4-miniThree-line curl
curl -N "https://codexcliapi.com/api/v1/codex/chat/completions" \
-H "Authorization: Bearer cps_live_your_api_key" \
-H "Content-Type: application/json" \
-d '{"model":"gpt-5.4-mini","stream":true,"messages":[{"role":"user","content":"Say hello from the relay"}]}'Cursor
Provider: OpenAI Compatible
Base URL: https://codexcliapi.com/api/v1/codex
API Key: cps_live_your_api_key
Model: gpt-5.4-miniCline
API Provider: OpenAI Compatible
Base URL: https://codexcliapi.com/api/v1/codex
API Key: cps_live_your_api_key
Model ID: gpt-5.4-mini
Streaming: enabledOpen WebUI
Connection type: OpenAI API compatible
API Base URL: https://codexcliapi.com/api/v1/codex
API Key: cps_live_your_api_key
Model: gpt-5.4-miniUse the dashboard API key issued here. Do not paste owner-side OpenAI Platform keys, ChatGPT/Codex OAuth tokens, or private relay internal keys into Codex CLI or client tools.
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Codex API pricing
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Codex API key dashboard
Manage customer-facing keys for the Codex relay after signing in.
Codex CLI API FAQ
What is the Codex CLI API base URL?
Use the base URL shown in the relay quickstart and connect it through an OpenAI-compatible client configuration. The public relay path is shaped around /api/v1/codex.
Why is my Codex CLI API key not working?
Common causes are using the wrong key type, an inactive dashboard key, missing billing access, or a client configured to the wrong base URL or model.
Does Codex CLI API usage have limits?
Yes. Paid access follows fair-use, concurrency, queueing, and capacity controls. Heavy agent sessions should use higher tiers or add-on capacity when available.