obsidian-agentic-chat: Instructions file for Codex

AGENTS.md

obsidian-agentic-chat AGENTS.md is an instructions file for Codex, OpenCode from tardigrde/obsidian-agentic-chat. It costs 1,485 tokens per session, scanned A, original, MIT.

Development instructions for an Obsidian plugin that provides an agentic chat feature. They describe a local test vault and commands for installing, rebuilding, hot-reloading, opening, and monitoring the plugin during development.

In plain words
What is it for?
They help install the plugin in a test vault, run a direct build watcher, reload changes automatically, launch the vault, and inspect session or end-to-end test output.
Why use it?
They shorten the feedback loop between changing plugin code and testing the result inside Obsidian.

Instructions file for CodexOpenCode

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

This is tardigrde/obsidian-agentic-chat's own configuration. It tells Codex and OpenCode how to work on obsidian-agentic-chat 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-agentic-chat configures →

Reuse

Borrowing it

Nothing to install: this file belongs to tardigrde/obsidian-agentic-chat. 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/tardigrde/obsidian-agentic-chat/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/tardigrde/obsidian-agentic-chat

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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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/tardigrde/obsidian-agentic-chat/agents-md"><img src="https://agentmods.dev/badge/instructions/tardigrde/obsidian-agentic-chat/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,485 This file is loaded in full into every session.
When invoked 1,485 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 $0.01485 $0.01485
Opus 5.5 $0.00594 $0.00594
Sonnet 5.5 $0.00297 $0.00297
Haiku 4.5 $0.00148 $0.00148

Measured 1mo ago against content hash e53a03543488, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

obsidian-agentic-chat 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 1mo 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 · 156 lines

How it starts

The opening of the file, as written. The whole thing — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Fast Feedback Loop

Use ~/MyTestVault as the local dogfood vault unless the user names another vault.

Install the current built plugin into a vault:

npm run install:local -- ~/MyTestVault

Run the fastest Obsidian development loop:

npm run dev:vault -- ~/MyTestVault

dev:vault installs real plugin files under ~/MyTestVault/.obsidian/plugins/agentic-chat/, creates .hotreload, and writes esbuild output directly to that plugin directory. For automatic JS reloads inside Obsidian, install and enable pjeby/hot-reload in the same vault. If hot reload is unavailable, reload manually from Obsidian DevTools:

await app.plugins.disablePlugin("agentic-chat");
await app.plugins.enablePlugin("agentic-chat");

Use the one-command dogfood loop when actively stabilizing:

npm run dogfood -- ~/MyTestVault

dogfood enables the local plugin in the vault, enables any installed hot-reload plugin whose manifest matches "hot reload", starts the direct-to-vault esbuild watcher, opens the vault through Obsidian's URI handler when available, and tails local session JSONL plus e2e artifact text/JSON. Use --once --no-open --no-tail for a non-interactive build/install check.

Run local verification in this order while iterating:

npm run verify:fast

That command expands to:

npm run typecheck
npm run lint
npm test
npm run test:e2e -- --spec test/e2e/specs/smoke.e2e.ts

npm run test:e2e uses scripts/run-e2e.ts: it resolves the matching obsidian-launcher chromedriver, starts it on a fixed low localhost port (9515-9520), and points WDIO at it with WDIO_SKIP_DRIVER_SETUP=1. This avoids WSL/proxy failures where WDIO's random high chromedriver port exits with bind() failed: Address already in use / IPv6 port not available. To run the full local suite without spending tokens, clear the live key so the model-backed guardrail spec skips:

AGENTIC_CHAT_API_KEY= npm run test:e2e

Read the full file on GitHub · 156 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. 1mo ago First seen · 156 lines · 1,485 tokens per session scan A e53a03543488

Subscribe to this mod's changes

obsidian-agentic-chat AGENTS.md is an instructions file published in the GitHub repository tardigrde/obsidian-agentic-chat (7 stars, last pushed yesterday), licensed MIT. It adds 1,485 tokens to every session, about $0.0059 per session on Opus 5.5. 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 2026-08-31.

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