Gemini API Dev
google-gemini/gemini-skills
A skill your agent uses when writing code that calls the Gemini API for text generation, multi-turn chat, multimodal understanding, image generation, video generation, speech generation (TTS), voice…
Add a new function calling tool (vault operation) for the Gemini chat.
Install Add Tool
$ npx skills add takeshy/obsidian-gemini-helper --skill add-tool -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install takeshy/obsidian-gemini-helper add-tool --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/takeshy/obsidian-gemini-helper.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/add-tool .claude/skills/add-tool && 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 "add-tool" agent skill from https://github.com/takeshy/obsidian-gemini-helper/tree/master/.agents/skills/add-tool into .claude/skills/add-tool/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-tool", 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/takeshy/obsidian-gemini-helper/tree/master/.agents/skills/add-toolType 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 takeshy/obsidian-gemini-helper --skill add-tool -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install takeshy/obsidian-gemini-helper add-tool --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/takeshy/obsidian-gemini-helper.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/add-tool .agents/skills/add-tool && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "add-tool" agent skill from https://github.com/takeshy/obsidian-gemini-helper/tree/master/.agents/skills/add-tool into .agents/skills/add-tool/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-tool", 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 takeshy/obsidian-gemini-helper --skill add-tool -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install takeshy/obsidian-gemini-helper add-tool --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/takeshy/obsidian-gemini-helper.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/add-tool .cursor/skills/add-tool && 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 "add-tool" agent skill from https://github.com/takeshy/obsidian-gemini-helper/tree/master/.agents/skills/add-tool into .cursor/skills/add-tool/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-tool", 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/takeshy/obsidian-gemini-helper.git --path .agents/skills/add-tool--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 takeshy/obsidian-gemini-helper --skill add-tool -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install takeshy/obsidian-gemini-helper add-tool --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/takeshy/obsidian-gemini-helper.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/add-tool .gemini/skills/add-tool && 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 "add-tool" agent skill from https://github.com/takeshy/obsidian-gemini-helper/tree/master/.agents/skills/add-tool into .gemini/skills/add-tool/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-tool", 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 takeshy/obsidian-gemini-helper add-toolInstalls 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 takeshy/obsidian-gemini-helper --skill add-tool -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/takeshy/obsidian-gemini-helper.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/add-tool .github/skills/add-tool && 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 "add-tool" agent skill from https://github.com/takeshy/obsidian-gemini-helper/tree/master/.agents/skills/add-tool into .github/skills/add-tool/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-tool", 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 takeshy/obsidian-gemini-helper --skill add-tool -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install takeshy/obsidian-gemini-helper add-tool --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/takeshy/obsidian-gemini-helper.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/add-tool .opencode/skills/add-tool && 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 "add-tool" agent skill from https://github.com/takeshy/obsidian-gemini-helper/tree/master/.agents/skills/add-tool into .opencode/skills/add-tool/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "add-tool", 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
add-tool- GitHub stars
- 117
- Token cost
- ~468 tokens
- SKILL.md length
- 206 words
- Files
- 1
- Skills in repo
- 3
- Repo updated
- First seen
- Licence
- MIT
At a glance
Add a new function calling tool (vault operation) for the Gemini chat.
- Works in 4 steps: src/core/tools.ts → src/vault/toolExecutor.ts → src/vault/notes.ts or… → …
- Adding new tools like readnote
- SKILL.md covers Required File Changes, Tool Design Guidelines and Verification
- Calls npm
What it does
Add Tool is an agent skill from takeshy/obsidian-gemini-helper. Add a new function calling tool (vault operation) for the Gemini chat. Use when adding new tools like readnote, createnote, etc.
Its SKILL.md is about 470 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 Structured output and tool calling and LLM wikis. It works with Google Gemini and Obsidian. The repository describes itself as: AI chat, workflow automation, semantic search (RAG), LLM Wiki (OKF) powered by Google Gemini. Works on both desktop and mobile. The licence is MIT.
When your agent uses it
- Adding new tools like readnote
- Tasks that involve Structured output and tool calling
- Tasks that involve LLM wikis
Example prompts
- “/add-tool”
Requirements
- Pre-approved tools (allowed-tools): Read, Edit, Write, Grep, Glob, Bash
Workflow steps
4 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 0e2b8d0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadEditWriteGrepGlobBash
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npm
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.
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
Add Tool loads about 468 tokens when it runs. Until then it costs about 35 tokens; SKILL.md has 206 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.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Edit, Write, Grep, Glob, Bash
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 takeshy/obsidian-gemini-helper at commit 0e2b8d0, republished under its MIT licence (© takeshy). 206 words, ~468 tokens.
Download SKILL.mdSave it as
.claude/skills/add-tool/SKILL.md (or your agent's skills folder).- name
- add-tool
- description
- Add a new function calling tool (vault operation) for the Gemini chat. Use when adding new tools like read_note, create_note, etc.
- allowed-tools
- Read, Edit, Write, Grep, Glob, Bash
- argument-hint
- [tool-name]
- disable-model-invocation
- true
Add New Function Calling Tool
Add a new function calling tool called $ARGUMENTS to the Gemini chat integration.
Required File Changes
1. src/core/tools.ts
- Add
ToolDefinitionto the appropriate tools array (read/write/delete) - Define
name,description, andparametersschema - Property types:
STRING,BOOLEAN,INTEGER,ARRAY,OBJECT - Add to
getEnabledTools()logic if it needs conditional enabling
2. src/vault/toolExecutor.ts
- Add
caseinexecuteToolCall()switch for the new tool name - Implement the execution logic (typically calling methods from
notes.tsorsearch.ts)
3. src/vault/notes.ts or src/vault/search.ts (if needed)
- Add the underlying vault operation method if it doesn't exist yet
- Use
app.vaultfor file operations,app.workspacefor UI operations
4. System prompt in src/ui/components/Chat.tsx
- Update the system prompt to mention the new tool's capabilities
- This helps the model know when to use the tool
Tool Design Guidelines
- Safe editing: Use
propose_editpattern (apply changes, backup original, user confirms) - Read-only tools: Always enabled; add to read tools array
- Write tools: Gated by
allowWriteoption - Delete tools: Gated by
allowDeleteoption (opt-in) - Naming: Use
snake_case(e.g.,read_note,create_folder) - Results: Return structured objects; large results will be truncated to 500 chars in tracing
Verification
- Run
npm run lint - Run
npm run build - Verify the tool appears in enabled tools based on its category
© takeshy, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .agents/skills/add-tool of takeshy/obsidian-gemini-helper.
Open the folder on GitHubat commit 0e2b8d0
Compare with similar skills
Add Tool 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 |
|---|---|---|---|---|---|---|
| Add Tool this skilltakeshy/obsidian-gemini-helper | 117 | — | ~468 | Automated safety check: Notes | MIT | |
| Gemini API Devgoogle-gemini/gemini-skills | 4.3k | — | ~5.1k | Automated safety check: Pass | Apache-2.0 | |
| Bridgic LLMsbitsky-tech/bridgic | 155 | — | ~839 | Automated safety check: Notes | MIT | |
| Gemini API DevAyuilos/Miffan | 192 | 1 repos | ~1.4k | Automated safety check: Pass | AGPL-3.0 | |
| Gemini Interactions APIsickn33/agentic-awesome-skills | 47k | 1 repos | ~4.8k | Automated safety check: Pass | Apache-2.0 | |
| Gemini Interactions APIgoogle/skills | 21k | — | ~4.2k | Automated safety check: Pass | Apache-2.0 |
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Build with the Gemini Interactions API for text, chat, multimodal generation, streaming, managed or background agents, function calling, structured output, and generateContent migrations.
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Related
Works with
Categories
Questions about Add Tool
What does Add Tool do?
Add a new function calling tool (vault operation) for the Gemini chat. Add Tool is an agent skill from takeshy/obsidian-gemini-helper. Add a new function calling tool (vault operation) for the Gemini chat.
When should I use Add Tool?
Add Tool fits situations like: adding new tools like readnote; tasks that involve Structured output and tool calling; tasks that involve LLM wikis.
How do I install Add Tool in Claude Code?
Run `npx skills add takeshy/obsidian-gemini-helper --skill add-tool -a claude-code`. Or copy the skill folder (.agents/skills/add-tool in takeshy/obsidian-gemini-helper) into .claude/skills/add-tool in your project. Claude Code loads it when a task matches its description.
How do I install Add Tool in Codex?
Run `npx skills add takeshy/obsidian-gemini-helper --skill add-tool -a codex`. Or copy the skill folder (.agents/skills/add-tool in takeshy/obsidian-gemini-helper) into .agents/skills/add-tool in your project. Codex loads it when a task matches its description.
Can I use Add Tool 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 takeshy/obsidian-gemini-helper --skill add-tool -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/add-tool, .gemini/skills/add-tool, .github/skills/add-tool and .opencode/skills/add-tool in your project.
What does Add Tool need to run?
Going by SKILL.md and its folder, Add Tool needs the command-line tools its instructions call (npm). Its frontmatter pre-approves these tools: Read, Edit, Write, Grep, Glob, Bash.
Does Add Tool access the network?
SKILL.md contains no URLs. Its commands use npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Add Tool safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Add Tool use?
Add Tool 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 Add Tool use?
About 468 tokens (SKILL.md is roughly 1.9k 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 Add Tool?
Skills that share tags, products or a category with Add Tool: Gemini API Dev (google-gemini/gemini-skills, 4.3k stars), Bridgic LLMs (bitsky-tech/bridgic, 155 stars), Gemini API Dev (Ayuilos/Miffan, 192 stars) and Gemini Interactions API (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Add Tool?
takeshy (a GitHub user) maintains it in takeshy/obsidian-gemini-helper, which has 117 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on October 6, 2026.
Source: takeshy/obsidian-gemini-helper on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.