Coding agents 11
Claude Code, Codex CLI and Gemini CLI: setup, settings and the errors you hit, with the exact messages.
- Claude Code 429 and Rate Limit Errors: Usage Limit or Outage?
Tell a usage limit from a throttle, a key problem or an outage by the exact message: `Request rejected (429)`, `You've hit your session limit` and more.
Claude Code official docs · 2026-10 (installed version 2.1.302) - Claude Code subagent missing from the list or never called
When a subagent in .claude/agents is not listed or never delegated to, check the file location, frontmatter, debug log and restart conditions in this order.
Claude Code 2.1.302 · Ubuntu 24.04 - Fix Codex CLI "exceeded retry limit, last status: 401"
When Codex CLI reconnects five times and ends in 401 Unauthorized, check which credentials it is using, then log out and sign in again in the right order.
Codex CLI 0.163.0 · Ubuntu 24.04 · Node 24 (tested without logging in) - Fix Codex CLI approval policy and sandbox settings
Check what Codex CLI's approval_policy and sandbox_mode accept today, fix the untrusted error, replace --full-auto, and cut down per-command approval prompts.
Codex CLI 0.163.0 · Ubuntu 24.04 · Node 24 - Fix common Claude Code errors by message
Match a Claude Code error — Invalid API key, Not logged in, 529, connection refused, certificate errors — to its cause and fix it with env vars and settings.
Claude Code 2.1.302 · Ubuntu 24.04 - Fix Gemini CLI 429 "No capacity available for model"
Tell a Gemini CLI 429 quota error from a server capacity error by its message, then switch models with /model, move to an API key, and set a retry interval.
Gemini CLI 0.64.0 bundled source · official docs · 2026-10 - Fix Gemini CLI install and login errors
Install Gemini CLI, check the version, and work through common login blockers: auth errors, the org-subscription check, CI_ variables, and debug mode.
Gemini CLI 0.64.0 · Node.js 24.22 · Ubuntu 24.04 - Give Codex your repository rules with AGENTS.md
Put an AGENTS.md in your repository so Codex reads build commands and rules first. Covers the read order, AGENTS.override.md and the 32 KiB size limit.
Codex CLI 0.163.0 · Ubuntu 24.04 · official docs as of 2026-10 - Pass arguments to a Claude Code custom slash command
Put $ARGUMENTS, $0, $1 or named arguments in a .claude/commands markdown file, then check how quoted values and missing arguments are substituted.
Claude Code 2.1.302 · Ubuntu 24.04 - Show the model and context usage in the Claude Code status line
Build a status line that shows the model name and context usage below the prompt: stdin JSON, the settings.json entry, null handling and re-run triggers.
Claude Code 2.1.302 · Ubuntu 24.04 · bash 5.2 · jq 1.7 · script run directly, on-screen behavior per the official docs - Where Gemini CLI reads settings.json and which file wins
Find where Gemini CLI reads settings.json, which of the user, project and system files overrides which, and why a project's settings can be ignored entirely.
Gemini CLI 0.64.0 · Ubuntu 24.04 · Node 24