DEVELOPER UTILITIES
AI API Developer Tools
Reviewable local tools for Codex CLI configuration, token-cost estimates, and client compatibility checks. No API key submission and no authenticated API calls.
Available tools
3 tools
Configuration, cost, and compatibility
LOCAL-FIRST TOOLKIT
Public parameters enter the tool; secrets stay local
All three tools work without signing in. Config generation and cost calculation use current page state, while the compatibility matrix is a manually maintained static dataset.
- 01
Public inputs
Endpoints, model IDs, token counts, and manually supplied prices
- 02
Local processing
Generate text, run formulas, or filter static records in the browser
- 03
No secret intake
No real API key input and no form values written to the URL
- 04
Human confirmation
Review the result before writing configuration or setting a budget
Start with one verifiable action
Each page explains its formula, protocol, or evidence boundary before exposing an interactive result that you can inspect directly.
CHOOSE A WORKFLOW
Choose a tool for the current problem
Solve one specific problem before entering a guide or automated setup flow, instead of changing endpoints, authentication, models, and budget assumptions together.
- 01
Prepare Codex
Generate config.toml and a safe auth placeholder
- 02
Estimate a budget
Calculate from realistic token assumptions and manual prices
- 03
Check compatibility
Review client versions, protocols, and evidence scope
- 04
Verify further
Use an integration guide for local and read-only request checks
Safety boundary
Do not paste API keys, authentication headers, or unredacted logs into a web page. Real secrets belong only in local auth files or controlled secret-management workflows.
Continue learning
Tools solve focused problems. Use the corresponding guides for installation, permissions, providers, and troubleshooting workflows.
View Codex and Claude Code guides