Agent skill

Semantix Guide

Troubleshoot and configure Semantix capabilities: Skills (project/custom/global/builtin priority, discovery dirs), Commands (override order, /dir:file naming), Hooks (11 events, automatic project…

MITAuto-check passedAgent Workflows

Install Semantix Guide

skills CLI

$ npx skills add Gnosil/semantix --skill semantix-guide -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install Gnosil/semantix semantix-guide --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/Gnosil/semantix.git skills-src && mkdir -p .claude/skills && cp -r skills-src/harness/skill/builtincontent/semantix-guide .claude/skills/semantix-guide && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "semantix-guide" agent skill from https://github.com/Gnosil/semantix/tree/main/harness/skill/builtincontent/semantix-guide into .claude/skills/semantix-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "semantix-guide", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Gnosil/semantix/tree/main/harness/skill/builtincontent/semantix-guide

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Gnosil/semantix --skill semantix-guide -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Gnosil/semantix semantix-guide --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Gnosil/semantix.git skills-src && mkdir -p .agents/skills && cp -r skills-src/harness/skill/builtincontent/semantix-guide .agents/skills/semantix-guide && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "semantix-guide" agent skill from https://github.com/Gnosil/semantix/tree/main/harness/skill/builtincontent/semantix-guide into .agents/skills/semantix-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "semantix-guide", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Gnosil/semantix --skill semantix-guide -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Gnosil/semantix semantix-guide --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Gnosil/semantix.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/harness/skill/builtincontent/semantix-guide .cursor/skills/semantix-guide && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "semantix-guide" agent skill from https://github.com/Gnosil/semantix/tree/main/harness/skill/builtincontent/semantix-guide into .cursor/skills/semantix-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "semantix-guide", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Gnosil/semantix.git --path harness/skill/builtincontent/semantix-guide

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Gnosil/semantix --skill semantix-guide -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Gnosil/semantix semantix-guide --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Gnosil/semantix.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/harness/skill/builtincontent/semantix-guide .gemini/skills/semantix-guide && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "semantix-guide" agent skill from https://github.com/Gnosil/semantix/tree/main/harness/skill/builtincontent/semantix-guide into .gemini/skills/semantix-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "semantix-guide", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Gnosil/semantix semantix-guide

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Gnosil/semantix --skill semantix-guide -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Gnosil/semantix.git skills-src && mkdir -p .github/skills && cp -r skills-src/harness/skill/builtincontent/semantix-guide .github/skills/semantix-guide && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "semantix-guide" agent skill from https://github.com/Gnosil/semantix/tree/main/harness/skill/builtincontent/semantix-guide into .github/skills/semantix-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "semantix-guide", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Gnosil/semantix --skill semantix-guide -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Gnosil/semantix semantix-guide --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Gnosil/semantix.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/harness/skill/builtincontent/semantix-guide .opencode/skills/semantix-guide && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "semantix-guide" agent skill from https://github.com/Gnosil/semantix/tree/main/harness/skill/builtincontent/semantix-guide into .opencode/skills/semantix-guide/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "semantix-guide", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: semantix-guide
GitHub stars: 821
Token cost: ~2.1k tokens
SKILL.md length: 880 words
Files: 1
Skills in repo: 1
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Troubleshoot and configure Semantix capabilities: Skills (project/custom/global/builtin priority, discovery dirs), Commands (override order, /dir:file naming), Hooks (11 events, automatic project…

Works in 3 steps: Run a static capability report (no… → Only if the user explicitly allows… → On desktop, open Settings → Diagnostics…
The user asks how to configure
SKILL.md covers First action, Skills, Commands (slash templates) and Hooks, plus 5 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Semantix Guide is an agent skill from Gnosil/semantix. Troubleshoot and configure Semantix capabilities: Skills (project/custom/global/builtin priority, discovery dirs), Commands (override order, /dir:file naming), Hooks (11 events, automatic project loading, matchers, timeouts), MCP (semantix-agent.toml + .mcp.json + plugin packages, autostart), plugin packages (native/Codex/Claude manifests), and AGENTS.md / instruction docs. Use when the user asks how to configure, debug missing skills/commands/hooks/MCP/plugins, or diagnose capability loading.

Its SKILL.md is about 2.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows, covering MCP servers and Agent instruction files. It works with Model Context Protocol. The repository describes itself as: semantic agent kernel which make agent efficient and self-evolve. The licence is MIT.

When your agent uses it

The user asks how to configure
Debug missing skills/commands/hooks/MCP/plugins
Diagnose capability loading

Example prompts

“/semantix-guide”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

Run a static capability report (no network, no MCP subprocesses)
Only if the user explicitly allows starting third-party MCP servers (may network and pass configured env/headers), run live probe
On desktop, open Settings → Diagnostics for the same report model. The desktop "include current session runtime" toggle only reads the…

What it can do on your machine

Read from SKILL.md and the folder at commit bb8db89. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Semantix Guide loads about 2.1k tokens when it runs. Until then it costs about 129 tokens; SKILL.md has 880 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~129
When it runs · the whole SKILL.md, loaded when a task matches: ~2.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Gnosil/semantix at commit bb8db89, republished under its MIT licence (© Gnosil). 880 words, ~2,147 tokens.

Download SKILL.mdSave it as .claude/skills/semantix-guide/SKILL.md (or your agent's skills folder).

name: semantix-guide
description: Troubleshoot and configure Semantix capabilities: Skills (project/custom/global/builtin priority, discovery dirs), Commands (override order, /dir:file naming), Hooks (11 events, automatic project loading, matchers, timeouts), MCP (semantix-agent.toml + .mcp.json + plugin packages, auto_start), plugin packages (native/Codex/Claude manifests), and AGENTS.md / instruction docs. Use when the user asks how to configure, debug missing skills/commands/hooks/MCP/plugins, or diagnose capability loading.
runAs: inline

Semantix self-diagnostics guide

This skill is inlined. Prefer evidence over guessing.

First action

Run a static capability report (no network, no MCP subprocesses):

bash

semantix-agent doctor capabilities --json

Only if the user explicitly allows starting third-party MCP servers (may network and pass configured env/headers), run live probe:

bash

semantix-agent doctor capabilities --live --timeout 5s --json

On desktop, open Settings → Diagnostics for the same report model. The desktop "include current session runtime" toggle only reads the active tab Host (connected/failed/deferred/disabled); it does not start MCP.

Do not invent auto-fixes. Surface stable issue codes, sources, and remediations from the report.

Skills

Config sources and priority

Winner per skill name (highest first):

project — <workspace>/{.semantix,.agents,.agent,.claude}/skills/
custom — [skills].paths (and plugin package skill roots)
global — <Semantix home>/skills and home convention dirs
builtin — shipped skills (including this guide)

Same name: higher scope wins; lower scopes are shadowed. [skills].disabled_skills hides a name from List/Read entirely.

Discovery conventions: .semantix, .agents, .agent, .claude (see config.ConventionDirs). Layouts: <name>/SKILL.md or flat <name>.md (Claude flat files need skill frontmatter).

Checks

Entry	How
CLI	`semantix-agent doctor capabilities` → Skills section
Desktop	Settings → Skills; Settings → Diagnostics
Agent	`/skill` list, `/semantix-guide`, `run_skill`

Symptom → cause → fix

Symptom	Likely cause	Fix
Skill missing from index	Disabled, shadowed, missing description, wrong root	Check report codes `skill.shadowed`, `skill.missing_description`, disabled list, discovery roots
Builtin overridden	Project/global same name	Rename or remove user skill; disable if intentional
Flat Claude file ignored	No skill frontmatter under `.claude/skills`	Add `description:` / `runAs:` frontmatter or use `SKILL.md` folder
Body never loads	Expected: bodies are on-demand	Invoke via `/name` or `run_skill`

Ordered triage

semantix-agent doctor capabilities --json → Skills
Confirm name not in disabled_skills
Confirm winner Path/Scope; if shadowed, inspect lower-priority roots
Missing description: skill may load but index placeholder is weak — add description:
Reopen session / Refresh Skills after config changes

Commands (slash templates)

Priority

config.CommandDirsForRoot: home convention commands → Semantix home commands → project convention commands. Later directory overrides earlier on name clash (command.Load).

Name from path: git/commit.md → /git:commit (slashes → :).

Checks

CLI/Desktop Diagnostics → Commands; invoke /name in chat.

Symptom → cause → fix

Symptom	Cause	Fix
Wrong body	Shadowed by later dir	Check `command.shadowed` winners
Missing command	Wrong dir / extension	Place `*.md` under a scanned `commands/` root
Parse fail	Unreadable file	Fix permissions / encoding (`command.read_failed`)

Hooks

Events (11)

PreToolUse, PostToolUse, PermissionRequest, UserPromptSubmit, Stop, PostLLMCall, SessionStart, SessionEnd, SubagentStop, Notification, PreCompact.

Blocking (exit 2 can gate the loop): PreToolUse, UserPromptSubmit. Others warn or contribute context only.

Sources

Project: <workspace>/.semantix/settings.json — loaded automatically
Plugin packages: installed enabled packages
Global: <Semantix home>/settings.json (always)

Match field is an anchored regex: file does not match read_file; use .*file or *. Timeout is milliseconds (defaults 5s gating / 30s other).

Checks

/hooks, Settings → Hooks, Diagnostics → Hooks.

Symptom → cause → fix

Symptom	Cause	Fix
Project hooks silent	Wrong workspace / restart required	Confirm the project path and restart Semantix after saving
Matcher never fires	Non-anchored assumption / bad regex	Fix match (`hook.invalid_matcher`)
Command missing	Empty command / missing context file	Fix settings entry
Malformed JSON	Invalid settings.json	Repair JSON (file yields no hooks, no crash)

MCP servers

Merge order

config.LoadForRoot merges:

User/project TOML [[plugins]] (higher name wins vs later sources when already defined)
Project .mcp.json servers not already in TOML
Enabled plugin packages MCP (skipped if name already defined)

Transports: stdio (default), http / streamable-http, sse. auto_start=false skips startup; nil/true = automatic. Tier eager blocks boot handshake; empty/background connects without blocking chat.

Env/header values may contain secrets — diagnostics list keys only.

Show full SKILL.md (326 more words)Show less

Checks

Mode	Behavior
Static doctor	Config validity, command path / URL shape, start intent — no subprocess
CLI `--live`	Isolated Host via `boot.PluginSpecsForRoot` + `plugin.Start`; auto-start only; concurrency 4; always Close
Desktop runtime	Read active tab Host only

Symptom → cause → fix

Symptom	Cause	Fix
Not connected	`auto_start=false` or failed start	Enable / fix command/URL (`mcp.command_not_found`, `mcp.start_failed`)
No tools	Connected but empty tools/list	Server config or permissions (`mcp.no_tools`)
Wrong source	Shadowed by TOML vs `.mcp.json` vs package	Inspect report Source / package owner
Invalid transport	Bad `type`	Use stdio/http/sse (`mcp.invalid_transport`)

Plugin packages

Manifests

Native: semantix-plugin.json
Codex: .codex-plugin/plugin.json
Claude: .claude-plugin/plugin.json (+ limited Claude compatibility paths)

State: <Semantix home>/plugin-packages.json. Disabled packages do not contribute skills/hooks/MCP.

Unmapped Claude-only features may appear as compatibility warnings — Semantix does not invent support.

Checks

semantix-agent plugin doctor <name>, Settings → Plugins, Diagnostics → Plugins.

Symptom → cause → fix

Symptom	Cause	Fix
Package missing	Bad root path	Reinstall / fix root (`plugin.missing_root`)
Invalid manifest	Parse failure	Fix JSON/manifest (`plugin.invalid_manifest`)
Skills missing	Disabled package	Enable package

Instructions (AGENTS.md / SEMANTIX.md)

Load order (ascending specificity)

User global docs → ancestor chain → project docs → project-local (*.local.md).

Recognized names: SEMANTIX.md, AGENTS.md, CLAUDE.md (and *.local.md variants). Multiple files in one directory can load; symlink identity is deduped.

Instructions fold into the system prompt at session boot (cache-stable prefix); Hooks remain runtime event handlers loaded from their configured locations.

Checks

Diagnostics → Instructions; memory Settings; read files on disk.

Symptom → cause → fix

Symptom	Cause	Fix
Guidance ignored	Wrong filename / empty file	Use recognized names under correct dir
Wrong scope won	Local override	Check load order in report

Desktop Diagnostics page

Static report on open; Refresh re-runs static collect
Copy redacted JSON
Optional session runtime merge (read-only Host)
Jump to Settings for MCP / Skills / Plugins / Hooks when issue settings_tab is set
Never auto-edit config, execute hooks, or auto-reconnect from this page

Safety

Prefer static diagnostics
Live MCP may run third-party code and network
Do not print tokens, header values, env values, URL query strings, usernames, or machine-absolute external paths
Report paths as <workspace>/…, ~/…, or <external>/…

Files

Just SKILL.md in harness/skill/builtincontent/semantix-guide of Gnosil/semantix.

Open the folder on GitHubat commit bb8db89

Compare with similar skills

Semantix Guide next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Semantix Guide compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Semantix Guide this skillGnosil/semantix	821	—	~2.1k	Automated safety check: Pass	MIT	3 days ago
Agent Setup Health Audittw93/Waza	7.2k	—	~5.2k	Automated safety check: Notes	MIT	yesterday
Working With Claude Code Docsobra/superpowers-developing-for-claude-code	142	—	~1.5k	Automated safety check: Pass	None	10 mo ago
Agnixagent-sh/agnix	445	—	~874	Automated safety check: Pass	Apache-2.0	yesterday
Claude Docs Consultantcentminmod/my-claude-code-setup	2.7k	—	~959	Automated safety check: Pass	MIT	today
Clawmemyoloshii/ClawMem	210	—	~7.5k	Automated safety check: Pass	MIT	2 days ago

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Works with

Model Context Protocol

Questions about Semantix Guide

What does Semantix Guide do?

Troubleshoot and configure Semantix capabilities: Skills (project/custom/global/builtin priority, discovery dirs), Commands (override order, /dir:file naming), Hooks (11 events, automatic project…. Semantix Guide is an agent skill from Gnosil/semantix.md / instruction docs.

When should I use Semantix Guide?

Semantix Guide fits situations like: the user asks how to configure; debug missing skills/commands/hooks/MCP/plugins; diagnose capability loading.

How do I install Semantix Guide in Claude Code?

Run `npx skills add Gnosil/semantix --skill semantix-guide -a claude-code`. Or copy the skill folder (harness/skill/builtincontent/semantix-guide in Gnosil/semantix) into .claude/skills/semantix-guide in your project. Claude Code loads it when a task matches its description.

How do I install Semantix Guide in Codex?

Run `npx skills add Gnosil/semantix --skill semantix-guide -a codex`. Or copy the skill folder (harness/skill/builtincontent/semantix-guide in Gnosil/semantix) into .agents/skills/semantix-guide in your project. Codex loads it when a task matches its description.

Can I use Semantix Guide in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Gnosil/semantix --skill semantix-guide -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/semantix-guide, .gemini/skills/semantix-guide, .github/skills/semantix-guide and .opencode/skills/semantix-guide in your project.

What does Semantix Guide need to run?

SKILL.md names no scripts, command-line tools or credentials: Semantix Guide is instructions for the agent only.

Does Semantix Guide access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Semantix Guide safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Semantix Guide use?

Semantix Guide is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Semantix Guide use?

About 2.1k tokens (SKILL.md is roughly 8.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Semantix Guide?

Skills that share tags, products or a category with Semantix Guide: Agent Setup Health Audit (tw93/Waza, 7.2k stars), Working With Claude Code Docs (obra/superpowers-developing-for-claude-code, 142 stars), Agnix (agent-sh/agnix, 445 stars) and Claude Docs Consultant (centminmod/my-claude-code-setup, 2.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Semantix Guide?

Gnosil (a GitHub user) maintains it in Gnosil/semantix, which has 821 GitHub stars. The repository was last updated on October 5, 2026.

Source: Gnosil/semantix on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Semantix Guide

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Semantix self-diagnostics guide

First action

Skills

Config sources and priority

Checks

Symptom → cause → fix

Ordered triage

Commands (slash templates)

Priority

Checks

Symptom → cause → fix

Hooks

Events (11)

Sources

Checks

Symptom → cause → fix

MCP servers

Merge order

Checks

Symptom → cause → fix

Plugin packages

Manifests

Checks

Symptom → cause → fix

Instructions (AGENTS.md / SEMANTIX.md)

Load order (ascending specificity)

Checks

Symptom → cause → fix

Desktop Diagnostics page

Safety

Files

Compare with similar skills

Similar skills

Agent Setup Health Audit

Working With Claude Code Docs

Agnix

Claude Docs Consultant

Clawmem

AI Bom

Related

Questions about Semantix Guide