obsidian-gemini-helper: Instructions file for Codex

AGENTS.md

obsidian-gemini-helper AGENTS.md is an instructions file for Codex, OpenCode from takeshy/obsidian-gemini-helper. It costs 1,900 tokens per session, scanned A, original, MIT.

Repository instructions for an Obsidian plugin that connects Google Gemini to note-taking workflows. The plugin provides chat, workflow automation, and semantic search, which finds related notes by meaning.

In plain words
What is it for?
Building and testing the Obsidian plugin, developing with a watch process, updating versions, and working in its Gemini, chat, search, and automation code.
Why use it?
They document the build, lint, development, and versioning commands so changes can be checked and releases update all required version files together.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md; mentions Codex.

This is takeshy/obsidian-gemini-helper's own configuration. It tells Codex and OpenCode how to work on obsidian-gemini-helper itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything obsidian-gemini-helper configures →

Reuse

Borrowing it

Nothing to install: this file belongs to takeshy/obsidian-gemini-helper. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/takeshy/obsidian-gemini-helper/master/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/takeshy/obsidian-gemini-helper

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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<a href="https://agentmods.dev/instructions/takeshy/obsidian-gemini-helper/agents-md"><img src="https://agentmods.dev/badge/instructions/takeshy/obsidian-gemini-helper/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,900 This file is loaded in full into every session.
When invoked 1,900 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.01900 $0.01900
Opus 5 $0.00950 $0.00950
Sonnet 5 $0.00380 $0.00380
Haiku 4.5 $0.00190 $0.00190

Measured 9d ago against content hash 0bfce3ec2771, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

obsidian-gemini-helper AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 166 lines

How it starts

The opening of the file, as written. The whole thing — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This file provides guidance to Codex (Codex.ai/code) when working with code in this repository.

Project Overview

Obsidian plugin for Google Gemini AI with Chat, Workflow Automation, and Semantic Search (RAG). Uses @google/genai SDK. API-only (no CLI backends or local LLM support).

Build Commands

npm run build    # Production build (tsc + esbuild) -> outputs main.js
npm run dev      # Development build with watch mode
npm run lint     # ESLint check

After building, reload the plugin in Obsidian to test changes.

Version Bumping

Use npm's built-in version command which automatically updates all version files:

npm version patch   # 1.2.3 -> 1.2.4
npm version minor   # 1.2.3 -> 1.3.0
npm version major   # 1.2.3 -> 2.0.0

This runs version-bump.mjs which updates package.json, manifest.json, and versions.json together.

Architecture

Core Layer (src/core/)

  • gemini.ts - Gemini API client wrapper
    • GeminiClient class with streaming chat, function calling, and RAG integration
    • chatWithToolsStream() - Main method for chat with tools and optional RAG
    • messagesToHistory() - Converts Message[] to Gemini Content[] format
  • fileSearch.ts - File Search RAG management
    • FileSearchManager - Handles store creation, file sync, deletion
    • smartSync() - Checksum-based incremental sync with parallel uploads
  • tools.ts - Function calling tool definitions (13 tools for vault operations)
  • mcpClient.ts - MCP (Model Context Protocol) client for external tool servers
    • Implements Streamable HTTP transport with JSON-RPC

Vault Layer (src/vault/)

  • notes.ts - Note CRUD operations + safe editing with proposeEdit()/applyEdit()/discardEdit()
  • search.ts - Local vault search (filename and content)
  • toolExecutor.ts - Maps tool calls to vault operations

Workflow Layer (src/workflow/)

  • types.ts - Workflow node types and execution context definitions
  • parser.ts - Parses workflow YAML from markdown code blocks
  • executor.ts - Stack-based workflow execution engine with MAX_ITERATIONS (1000) safety
  • nodeHandlers.ts - Individual handlers for 21 node types
  • history.ts - Execution history tracking
  • historyCanvas.ts - Export execution history to Obsidian Canvas
  • codeblockSync.ts - Sync workflow changes back to markdown

Read the full file on GitHub · 166 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 166 lines · 1,900 tokens per session scan A 0bfce3ec2771

Subscribe to this mod's changes

obsidian-gemini-helper AGENTS.md is an instructions file published in the GitHub repository takeshy/obsidian-gemini-helper (114 stars, last pushed yesterday), licensed MIT. It adds 1,900 tokens to every session, about $0.0095 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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