What is cogitator AGENTS.md?

Repository instructions for cogitator, a terminal interface that monitors locally running coding-agent sessions and can work with Git worktrees and tmux.

Use them when changing cogitator’s Go code, terminal interface, documentation, demos, configuration, session discovery, or worktree controls.

They give an agent the project’s layout, commands, conventions, and verification details so it can make changes without guessing how the repository works.

How guilhermehto/cogitator configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to guilhermehto/cogitator. 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/guilhermehto/cogitator/master/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/guilhermehto/cogitator

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/guilhermehto/cogitator/agents-md/github.svg)](https://agentmods.dev/instructions/guilhermehto/cogitator/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/guilhermehto/cogitator/agents-md"><img src="https://agentmods.dev/badge/instructions/guilhermehto/cogitator/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>

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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/guilhermehto/cogitator/agents-md"><img src="https://agentmods.dev/badge/instructions/guilhermehto/cogitator/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,057 This file is loaded in full into every session.

When invoked 1,057 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.

Model	Per session	Once invoked
Fable 5.1	$0.01057	$0.01057
Opus 5.5	$0.00423	$0.00423
Sonnet 5.5	$0.00211	$0.00211
Haiku 4.5	$0.00106	$0.00106

Measured 22d ago against content hash ca3ee60806cd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cogitator 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 22d 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 · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

cogitator is a terminal (Bubble Tea) TUI that monitors locally running opencode instances discovered over mDNS, renders a live sessions view with attention signals, and launches/jumps/resumes git worktrees in tmux — either single-repo (Sessions pane) or as multi-repo workspace bundles (Workspaces pane). Go module github.com/guilhermehto/cogitator (Go 1.25), macOS + Linux only.

Layout

cmd/cogitator/ — entrypoint + flags (--status, --demo, --debug, --bell).
internal/ui/ — Bubble Tea model/update/view (the only package that imports bubbletea).
internal/state/, discovery/, supervisor/, oc/ — mDNS discovery, SSE event ingest, opencode API (oc/generated.go is generated — see CONTRIBUTING).
internal/settings/ — single-repo config, session roster, merge, repo discovery.
internal/workspace/ — multi-repo workspace/session domain: types (workspace.go), mutex-guarded workspaces.json store (store.go), session path derivation/validation (paths.go), worktree-bundle assemble/teardown (assemble.go), live status joins (status.go).
internal/agents/, agentfeed/ — cross-harness agent model, @cog_* tmux badge diffs, focus/seen decisions; the feed that pick/next read from the running TUI.
internal/tmuxinstall/ — cogitator tmux install|uninstall: owned tmux.conf + one source-file line.
internal/git/, harness/, tmuxctl/, pathnorm/ — git ops, harness registry, tmux control, canonical paths.
internal/termpalette/ — OSC 4 query for the terminal's 16 theme colours (the Agents preview mutes them).
internal/config/, logging/ — timing/threshold defaults, logging.
docs/ — VitePress site (self-contained npm package; npm run dev|build inside docs/), deployed to GitHub Pages by .github/workflows/docs.yml. make demo copies tui.png into docs/public/.

Commands

make ci — vet + lint + test + cross-build. Run before any PR.
make test — go test -race -count=1 ./....
make build / make run — build/run the binary.
make generate — regenerate opencode API models (requires schema; see CONTRIBUTING).
make demo — rebuild tui.png from demo.tape (the --demo worktree roster) and sync it to docs/public/.

Read the full file on GitHub · 44 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.

22d ago Changed · +1 lines · +30 tokens per session ca3ee60806cd
23d ago Changed · +2 lines · +86 tokens per session c8f4dbb07271
1mo ago Changed · +2 lines · +72 tokens per session fc2acc4ebc9e
2mo ago First seen · 39 lines · 869 tokens per session scan A 8aa3bc85d1a3

Subscribe to this mod's changes

cogitator AGENTS.md is an instructions file published in the GitHub repository guilhermehto/cogitator (2 stars, last pushed 15d ago), licensed MIT. It adds 1,057 tokens to every session, about $0.0042 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.

LLM ai-tools claude codex-cli developer-tools pi-dev

cogitator AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
cogitator AGENTS.mdguilhermehto/cogitator	Instructions file	2	15d ago	MIT	A	1,057	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

cogitator: Instructions file for Codex