Codebase Knowledge Graph Q&A
Egonex-AI/Understand-Anything
Answers questions about a codebase by searching a prebuilt knowledge graph of its files, functions, classes and dependencies, not by rereading every source file.
Semantic code search using mgrep for efficient codebase exploration.
$ npx skills add intellectronica/agent-skills --skill mgrep-code-search -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install intellectronica/agent-skills mgrep-code-search --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/intellectronica/agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/mgrep-code-search .claude/skills/mgrep-code-search && rm -rf skills-srcUse ~/.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/
Install the "mgrep-code-search" agent skill from https://github.com/intellectronica/agent-skills/tree/main/skills/mgrep-code-search into .claude/skills/mgrep-code-search/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mgrep-code-search", 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 install https://github.com/intellectronica/agent-skills/tree/main/skills/mgrep-code-searchType 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.
$ npx skills add intellectronica/agent-skills --skill mgrep-code-search -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install intellectronica/agent-skills mgrep-code-search --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/intellectronica/agent-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/mgrep-code-search .agents/skills/mgrep-code-search && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "mgrep-code-search" agent skill from https://github.com/intellectronica/agent-skills/tree/main/skills/mgrep-code-search into .agents/skills/mgrep-code-search/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mgrep-code-search", 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.
$ npx skills add intellectronica/agent-skills --skill mgrep-code-search -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install intellectronica/agent-skills mgrep-code-search --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/intellectronica/agent-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/mgrep-code-search .cursor/skills/mgrep-code-search && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "mgrep-code-search" agent skill from https://github.com/intellectronica/agent-skills/tree/main/skills/mgrep-code-search into .cursor/skills/mgrep-code-search/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mgrep-code-search", 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 https://github.com/intellectronica/agent-skills.git --path skills/mgrep-code-search--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add intellectronica/agent-skills --skill mgrep-code-search -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install intellectronica/agent-skills mgrep-code-search --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/intellectronica/agent-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/mgrep-code-search .gemini/skills/mgrep-code-search && rm -rf skills-srcUse ~/.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/
Install the "mgrep-code-search" agent skill from https://github.com/intellectronica/agent-skills/tree/main/skills/mgrep-code-search into .gemini/skills/mgrep-code-search/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mgrep-code-search", 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.
$ gh skill install intellectronica/agent-skills mgrep-code-searchInstalls 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).
$ npx skills add intellectronica/agent-skills --skill mgrep-code-search -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/intellectronica/agent-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/mgrep-code-search .github/skills/mgrep-code-search && rm -rf skills-srcUse ~/.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/
Install the "mgrep-code-search" agent skill from https://github.com/intellectronica/agent-skills/tree/main/skills/mgrep-code-search into .github/skills/mgrep-code-search/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mgrep-code-search", 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.
$ npx skills add intellectronica/agent-skills --skill mgrep-code-search -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install intellectronica/agent-skills mgrep-code-search --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/intellectronica/agent-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/mgrep-code-search .opencode/skills/mgrep-code-search && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "mgrep-code-search" agent skill from https://github.com/intellectronica/agent-skills/tree/main/skills/mgrep-code-search into .opencode/skills/mgrep-code-search/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mgrep-code-search", 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.
mgrep-code-searchSemantic code search using mgrep for efficient codebase exploration.
Mgrep Code Search is an agent skill from intellectronica/agent-skills. Semantic code search using mgrep for efficient codebase exploration. This skill should be used when searching or exploring codebases with more than 30 non-gitignored files and/or nested directory structures. It provides natural language semantic search that complements traditional grep/ripgrep for finding features, understanding intent, and exploring unfamiliar code.
Its SKILL.md is about 870 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 Development, covering Codebase onboarding. The repository describes itself as: @intellectronica's agent skills. The licence is CC0-1.0.
3 steps, taken from the first numbered list in SKILL.md.
Read from SKILL.md and the folder at commit 9b0e00a. It shows what the files ask for, not the result of running them.
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.
Shell commands in SKILL.md call:
bunxFrom the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md. Its commands use bunx, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Mgrep Code Search loads about 871 tokens when it runs. Until then it costs about 97 tokens; SKILL.md has 257 words of instructions outside code blocks.
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.
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.
The full file from intellectronica/agent-skills at commit 9b0e00a, republished under its CC0-1.0 licence (© intellectronica). 257 words, ~871 tokens.
.claude/skills/mgrep-code-search/SKILL.md (or your agent's skills folder).mgrep is a semantic search tool that enables natural language queries across code, text, PDFs, and images. It is particularly effective for exploring larger or complex codebases where traditional pattern matching falls short.
Use mgrep when:
Use traditional grep/ripgrep when:
Before searching, start the watcher to index the repository:
bunx @mixedbread/mgrep watchThe watch command indexes the repository and maintains synchronisation with file changes. It respects .gitignore and .mgrepignore patterns.
bunx @mixedbread/mgrep "your natural language query" [path]bunx @mixedbread/mgrep "where is authentication configured?"
bunx @mixedbread/mgrep "how do we handle errors in API calls?" src/
bunx @mixedbread/mgrep "database connection setup" src/lib| Option | Description |
|---|---|
-m <count> | Maximum results (default: 10) |
-c, --content | Display full result content |
-a, --answer | Generate AI-powered synthesis of results |
-s, --sync | Update index before searching |
--no-rerank | Disable relevance optimisation |
# Get more results
bunx @mixedbread/mgrep -m 25 "user authentication flow"
# Show full content of matches
bunx @mixedbread/mgrep -c "error handling patterns"
# Get an AI-synthesised answer
bunx @mixedbread/mgrep -a "how does the caching layer work?"
# Sync index before searching
bunx @mixedbread/mgrep -s "payment processing" src/servicesStart watcher (once per session or when files change significantly):
bunx @mixedbread/mgrep watchSearch semantically:
bunx @mixedbread/mgrep "what you're looking for" [optional/path]Refine as needed using path constraints or options:
bunx @mixedbread/mgrep -m 20 -c "refined query" src/specific/directoryConfigure defaults via environment variables:
| Variable | Purpose |
|---|---|
MGREP_MAX_COUNT | Default result limit |
MGREP_CONTENT | Enable content display (1/true) |
MGREP_ANSWER | Enable AI synthesis (1/true) |
MGREP_SYNC | Pre-search sync (1/true) |
bunx @mixedbread/mgrep to run commands (not npm/npx or direct installation)bunx @mixedbread/mgrep watch before searching to ensure the index is current.gitignore patterns automatically.mgrepignore for additional exclusions© intellectronica, CC0-1.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Just SKILL.md in skills/mgrep-code-search of intellectronica/agent-skills.
Open the folder on GitHubat commit 9b0e00a
We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in intellectronica/agent-skills, which our catalogue first saw on October 7, 2026.
Mgrep Code Search 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Mgrep Code Search this skillintellectronica/agent-skills | 295 | 1 repos | ~871 | Automated safety check: Pass | CC0-1.0 | |
| Codebase Knowledge Graph Q&AEgonex-AI/Understand-Anything | 86k | 1 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Understand ExplainEgonex-AI/Understand-Anything | 86k | 1 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Repomix Codebase Exploreryamadashy/repomix | 29k | 1 repos | ~2.7k | Automated safety check: Pass | MIT | |
| Code Graph Mermaid Diagramstrailofbits/skills | 7.4k | 1 repos | ~1.7k | Automated safety check: Pass | CC-BY-SA-4.0 | |
| Project Onboarding Guide from Knowledge GraphEgonex-AI/Understand-Anything | 86k | — | ~1.2k | Automated safety check: Pass | MIT |
Egonex-AI/Understand-Anything
Answers questions about a codebase by searching a prebuilt knowledge graph of its files, functions, classes and dependencies, not by rereading every source file.
Egonex-AI/Understand-Anything
Gives an in-depth explanation of one file, function or module by reading the project's knowledge graph and checking that the graph is still fresh.
yamadashy/repomix
Packs a local or remote repository into a single AI-friendly file with the Repomix CLI, then reads and searches that output to explain structure, find patterns or report metrics.
trailofbits/skills
Generates Mermaid diagrams from Trailmark code graphs, including call graphs, class hierarchies, module dependency maps, complexity heatmaps and attack surface data flows.
Egonex-AI/Understand-Anything
Writes an onboarding guide for new team members from a project's existing knowledge graph, after checking that the graph still matches the current commit.
ahmedkhaleel2004/gitdiagram
Explains the architecture of a public GitHub repository through GitDiagram: how the code is organized, the main components with paths, and a Mermaid diagram.
intellectronica/agent-skills
Render Mermaid diagrams as SVG and PNG using the Beautiful Mermaid library.
intellectronica/agent-skills
Generate and edit images using OpenAI's GPT Image 1.5 model.
intellectronica/agent-skills
Generate and edit images using Google's Nano Banana 2 (Gemini 3.1 Flash Image Preview) API.
intellectronica/agent-skills
Generate and edit images using Google's Nano Banana Pro (Gemini 3 Pro Image) API.
intellectronica/agent-skills
This skill provides comprehensive instructions for interacting with the Notion API via REST calls.
intellectronica/agent-skills
Extract transcripts from YouTube videos. An agent skill from intellectronica/agent-skills.
Categories
Semantic code search using mgrep for efficient codebase exploration. Mgrep Code Search is an agent skill from intellectronica/agent-skills. Semantic code search using mgrep for efficient codebase exploration.
Mgrep Code Search fits situations like: tasks that involve Codebase onboarding.
Run `npx skills add intellectronica/agent-skills --skill mgrep-code-search -a claude-code`. Or copy the skill folder (skills/mgrep-code-search in intellectronica/agent-skills) into .claude/skills/mgrep-code-search in your project. Claude Code loads it when a task matches its description.
Run `npx skills add intellectronica/agent-skills --skill mgrep-code-search -a codex`. Or copy the skill folder (skills/mgrep-code-search in intellectronica/agent-skills) into .agents/skills/mgrep-code-search in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add intellectronica/agent-skills --skill mgrep-code-search -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mgrep-code-search, .gemini/skills/mgrep-code-search, .github/skills/mgrep-code-search and .opencode/skills/mgrep-code-search in your project.
Going by SKILL.md and its folder, Mgrep Code Search needs the command-line tools its instructions call (bunx). Our summary lists: Node.js.
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.
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.
Mgrep Code Search is published under the CC0-1.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 871 tokens (SKILL.md is roughly 3.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Mgrep Code Search: Codebase Knowledge Graph Q&A (Egonex-AI/Understand-Anything, 86k stars), Understand Explain (Egonex-AI/Understand-Anything, 86k stars), Repomix Codebase Explorer (yamadashy/repomix, 29k stars) and Code Graph Mermaid Diagrams (trailofbits/skills, 7.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
intellectronica (a GitHub user) maintains it in intellectronica/agent-skills, which has 295 GitHub stars. The repository holds 21 skills in this directory. The repository was last updated on April 25, 2026.
Source: intellectronica/agent-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.