Gno
gmickel/gno
Search local documents, files, notes, and knowledge bases. An agent skill from gmickel/gno.
Hybrid search (vector + BM25 via RRF + metadata boost) against the pgvector Knowledge base, with optional RAG synthesis.
Install Knowledge Query
$ npx skills add evolution-foundation/evo-nexus --skill knowledge-query -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install evolution-foundation/evo-nexus knowledge-query --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/evolution-foundation/evo-nexus.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/knowledge-query .claude/skills/knowledge-query && 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 "knowledge-query" agent skill from https://github.com/evolution-foundation/evo-nexus/tree/main/.claude/skills/knowledge-query into .claude/skills/knowledge-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "knowledge-query", 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/evolution-foundation/evo-nexus/tree/main/.claude/skills/knowledge-queryType 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 evolution-foundation/evo-nexus --skill knowledge-query -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install evolution-foundation/evo-nexus knowledge-query --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/evolution-foundation/evo-nexus.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/knowledge-query .agents/skills/knowledge-query && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "knowledge-query" agent skill from https://github.com/evolution-foundation/evo-nexus/tree/main/.claude/skills/knowledge-query into .agents/skills/knowledge-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "knowledge-query", 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 evolution-foundation/evo-nexus --skill knowledge-query -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install evolution-foundation/evo-nexus knowledge-query --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/evolution-foundation/evo-nexus.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/knowledge-query .cursor/skills/knowledge-query && 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 "knowledge-query" agent skill from https://github.com/evolution-foundation/evo-nexus/tree/main/.claude/skills/knowledge-query into .cursor/skills/knowledge-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "knowledge-query", 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/evolution-foundation/evo-nexus.git --path .claude/skills/knowledge-query--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 evolution-foundation/evo-nexus --skill knowledge-query -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install evolution-foundation/evo-nexus knowledge-query --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/evolution-foundation/evo-nexus.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/knowledge-query .gemini/skills/knowledge-query && 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 "knowledge-query" agent skill from https://github.com/evolution-foundation/evo-nexus/tree/main/.claude/skills/knowledge-query into .gemini/skills/knowledge-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "knowledge-query", 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 evolution-foundation/evo-nexus knowledge-queryInstalls 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 evolution-foundation/evo-nexus --skill knowledge-query -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/evolution-foundation/evo-nexus.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/knowledge-query .github/skills/knowledge-query && 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 "knowledge-query" agent skill from https://github.com/evolution-foundation/evo-nexus/tree/main/.claude/skills/knowledge-query into .github/skills/knowledge-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "knowledge-query", 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 evolution-foundation/evo-nexus --skill knowledge-query -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install evolution-foundation/evo-nexus knowledge-query --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/evolution-foundation/evo-nexus.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/knowledge-query .opencode/skills/knowledge-query && 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 "knowledge-query" agent skill from https://github.com/evolution-foundation/evo-nexus/tree/main/.claude/skills/knowledge-query into .opencode/skills/knowledge-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "knowledge-query", 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
knowledge-query- GitHub stars
- 545
- Token cost
- ~804 tokens
- SKILL.md length
- 247 words
- Files
- 1
- Skills in repo
- 118
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Hybrid search (vector + BM25 via RRF + metadata boost) against the pgvector Knowledge base, with optional RAG synthesis.
- Works in 2 steps: Identify active connection → Hybrid search
- The user asks factual questions that should be grounded in indexed documents (e.g.
- SKILL.md covers When to trigger, Arguments, Workflow and Output, plus 1 more section
- Needs ANTHROPIC_API_KEY
What it does
Knowledge Query is an agent skill from evolution-foundation/evo-nexus. Hybrid search (vector + BM25 via RRF + metadata boost) against the pgvector Knowledge base, with optional RAG synthesis. Use when the user asks factual questions that should be grounded in indexed documents (e.g., 'what do we know about X', 'search the knowledge base for Y', '@knowledge <query'). Pass answer=true to synthesize a narrative response with citations instead of raw snippets.
Its SKILL.md is about 800 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 AI & LLM Engineering, covering Retrieval-augmented generation, Knowledge bases and Citation management. It works with pgvector and Anthropic API. The repository describes itself as: The open source operating system for AI-powered businesses.
When your agent uses it
- The user asks factual questions that should be grounded in indexed documents (e.g.
- What do we know about X
- Search the knowledge base for Y
- @knowledge <query)
Example prompts
- “what do we know about X”
- “search the knowledge base for Y”
- “@knowledge <query”
- “/knowledge-query”
Requirements
- Python 3
- A credential in ANTHROPIC_API_KEY
Workflow steps
2 steps, taken from the step headings in SKILL.md.
- Identify active connection
- Hybrid search
What it can do on your machine
Read from SKILL.md and the folder at commit 7f5dd76. 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 python).
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 these keys or tokens, usually read from environment variables:
ANTHROPIC_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Knowledge Query loads about 804 tokens when it runs. Until then it costs about 102 tokens; SKILL.md has 247 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.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NoteMentions a .env fileSKILL.md:81
nthropic` SDK (`ANTHROPIC_API_KEY` from `.env`). Model: `claude-haiku-4-5-20251001`. Max tokens: 800.
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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 247 words (~804 tokens).
“Group: Consumption. Hybrid search on pgvector + optional RAG (LLM synthesis with citations).”
- name
- knowledge-query
Files
Just SKILL.md in .claude/skills/knowledge-query of evolution-foundation/evo-nexus.
Open the folder on GitHubat commit 7f5dd76
Compare with similar skills
Knowledge Query 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 |
|---|---|---|---|---|---|---|
| Knowledge Query this skillevolution-foundation/evo-nexus | 545 | — | ~804 | Automated safety check: Notes | Custom licence | |
| Gnogmickel/gno | 115 | 1 repos | ~1.6k | Automated safety check: Pass | MIT | |
| Gnogmickel/gno | 115 | — | ~11k | Automated safety check: Pass | MIT | |
| Penguin SDKPrism-Shadow/penguin-harness | 2.5k | — | ~11k | Automated safety check: Pass | Apache-2.0 | |
| RAG AssistantAtmosphere/atmosphere | 3.8k | — | ~504 | Automated safety check: Pass | Apache-2.0 | |
| Vault Contextual RetrievalAgriciDaniel/claude-obsidian | 15k | — | ~1.4k | Automated safety check: Pass | MIT |
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Search local documents, files, notes, and knowledge bases. An agent skill from gmickel/gno.
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Vault Contextual Retrieval
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Related
Works with
Categories
Questions about Knowledge Query
What does Knowledge Query do?
Hybrid search (vector + BM25 via RRF + metadata boost) against the pgvector Knowledge base, with optional RAG synthesis. Knowledge Query is an agent skill from evolution-foundation/evo-nexus. Hybrid search (vector + BM25 via RRF + metadata boost) against the pgvector Knowledge base, with optional RAG synthesis.
When should I use Knowledge Query?
Knowledge Query fits situations like: the user asks factual questions that should be grounded in indexed documents (e.g; what do we know about X; search the knowledge base for Y; @knowledge <query).
How do I install Knowledge Query in Claude Code?
Run `npx skills add evolution-foundation/evo-nexus --skill knowledge-query -a claude-code`. Or copy the skill folder (.claude/skills/knowledge-query in evolution-foundation/evo-nexus) into .claude/skills/knowledge-query in your project. Claude Code loads it when a task matches its description.
How do I install Knowledge Query in Codex?
Run `npx skills add evolution-foundation/evo-nexus --skill knowledge-query -a codex`. Or copy the skill folder (.claude/skills/knowledge-query in evolution-foundation/evo-nexus) into .agents/skills/knowledge-query in your project. Codex loads it when a task matches its description.
Can I use Knowledge Query 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 evolution-foundation/evo-nexus --skill knowledge-query -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/knowledge-query, .gemini/skills/knowledge-query, .github/skills/knowledge-query and .opencode/skills/knowledge-query in your project.
What does Knowledge Query need to run?
Going by SKILL.md and its folder, Knowledge Query needs credentials named ANTHROPIC_API_KEY. Our summary lists: Python 3; A credential in ANTHROPIC_API_KEY.
Does Knowledge Query 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 Knowledge Query safe to install?
Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Knowledge Query use?
Knowledge Query has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Knowledge Query use?
About 804 tokens (SKILL.md is roughly 3.2k 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 Knowledge Query?
Skills that share tags, products or a category with Knowledge Query: Gno (gmickel/gno, 115 stars), Gno (gmickel/gno, 115 stars), Penguin SDK (Prism-Shadow/penguin-harness, 2.5k stars) and RAG Assistant (Atmosphere/atmosphere, 3.8k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Knowledge Query?
evolution-foundation (a GitHub organization) maintains it in evolution-foundation/evo-nexus, which has 545 GitHub stars. The repository holds 118 skills in this directory. The repository was last updated on May 13, 2026.
Source: evolution-foundation/evo-nexus on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.