GrepBoard — Step-by-step manuals for AI tools, Linux, logs and storage — each one with the exact commands, prompts and output.
Latest 51
- Fix "user cancelled MCP tool call" in codex exec
When codex exec cancels MCP tool calls right away, drop the config keys that do nothing, approve per server or tool with approval_mode, and keep the sandbox on.
Codex CLI 0.163.0 · Ubuntu 24.04 · Node 24 (config checks reproduced; real tool calls per issue #24135) - Fix a .mcp.json server stuck on "Pending approval"
Approve or reject a .mcp.json server that claude mcp list shows as ⏸ Pending approval, and see where local, project and user scope store servers and which wins.
Claude Code 2.1.302 · Ubuntu 24.04 · setting keys per Claude Code docs · 2026-10 - Fix Claude Code Action 403 permission errors
When Claude Code Action fails with 403 Resource not accessible by integration, check the token type, permissions block, repo defaults, then fork PRs.
claude-code-action v1 official docs · actionlint 1.7.12 · 2026-10 - 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 - Fix Gemini's answer format with system instructions and examples
When Gemini's answer format changes between runs, put the rules in a system instruction, add two or three examples with an Output: prefix, then re-run to check.
Gemini API docs · 2026-10 - Fix Nginx proxy blocked by SELinux on Rocky Linux 9
Tell whether a 502 and a Permission denied in error.log come from SELinux, fix it with a boolean, and label a custom document root.
Rocky Linux 9 · per RHEL 9 SELinux documentation · 2026-10 - Get Claude's proofreading as a table of changes only
Asking Claude to fix a document rewrites all of it. Get only the changed spans as a table, then check by script that every Original cell is in the document.
claude-sonnet-5-5 · Claude Code 2.1.302 · Ubuntu 24.04 · run 2026-10-19 - 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 - Install Nginx and set the server name
Install Nginx from the Ubuntu repository, set the default site to your host name, then test the config and reload without dropping connections.
Ubuntu 24.04.5 LTS · nginx 1.24.0 - Maintain a consistent character across AI image generations
Generate consistent character images across multiple scenes using fixed descriptive prompts, Midjourney reference parameters, and Diffusers LoRA finetuning.
Midjourney v6 · Hugging Face Diffusers - Make Claude quote its sources, then check the quotes with grep
Ask Claude for a summary with a verbatim quote per sentence, confirm each quote exists in the source with grep -F, and re-ask only for the ones that fail.
claude-sonnet-5-5 · Claude Code 2.1.302 · Ubuntu 24.04 · run on 2026-10-19 - 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 - Put Nginx in front of an app as a reverse proxy
Send one host name to an app on a local port, pass the client address along, and tell a proxy 502 apart from an app error.
Ubuntu 24.04.5 LTS · nginx 1.24.0 · Python 3 http.server (test app) - Read a HAProxy log line — status code and termination state
Split an option httplog line into fields, read the first two characters of the termination state, then count them and list slow requests with awk.
Ubuntu 24.04 · HAProxy 2.8.16 · explanations follow the HAProxy 2.8 configuration manual - Read Ceph HEALTH_WARN causes with ceph health detail
Read HEALTH_WARN codes with ceph health detail, learn six common codes and the first command for each, and mute a known warning for a set time.
Ceph docs (Tentacle) · 2026-10 - Recompute the averages and rates an AI stated from a CSV
Take an AI's mean, median and rates back as JSON, then recompute the same keys with pandas. Covers a rounding tolerance and re-asking only wrong figures.
claude-sonnet-5-5 · Claude Code 2.1.302 · Python 3.12.3 · pandas 3.0.6 · Ubuntu 24.04 · run 2026-10-19