What is ab AGENTS.md?

A repository guide for coding agents working on Agent-Bridge and its related child repositories. It explains which folders are active, how the repositories are organized, and how to start the system.

Use it to identify where backend, frontend, and terminal-daemon changes belong, prepare environment files and secrets, and start the production-style local stack.

It reduces mistakes caused by editing the wrong repository or using outdated code as the source of truth. It also gives agents the setup details needed to work in the project.

How agent-bridges/ab configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to agent-bridges/ab. 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/agent-bridges/ab/master/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/agent-bridges/ab

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/agent-bridges/ab/agents-md/github.svg)](https://agentmods.dev/instructions/agent-bridges/ab/agents-md)

Your own site

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

Per session 1,140 This file is loaded in full into every session.

When invoked 1,140 The same file — it is already loaded in full.

Security scan A 1 finding. 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	$0.01140	$0.01140
Opus 5.5	$0.00456	$0.00456
Sonnet 5.5	$0.00228	$0.00228
Haiku 4.5	$0.00114	$0.00114

Measured 2mo ago against content hash 5923516183a3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ab AGENTS.md scanned grade A with 1 finding 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 2mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl http://127.0.0.1:8520/health

AGENTS.md · 188 lines

How it starts

The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS

This file is for agentic coding tools working inside Agent-Bridge (ab).

Scope

Work only inside the current ab checkout and its child repos:

ab
ab-back
ab-front
ab-pty

Do not treat old repos outside this checkout as the active source of truth.

Repository Model

ab is the deploy/orchestration root
each child folder is its own git repository
root ab is also its own git repository
changes should be committed in the repo that owns them

Current Product Split

ab-back: backend/API
ab-front: main canvas frontend on 5281
ab-pty: PTY daemon

Quick Setup

Ensure .env exists:

cp .env.example .env

Ensure AB_JWT_SECRET_PATH points to a real file:

mkdir -p state/back
openssl rand -hex 32 > state/back/jwt-secret

Bootstrap and start the default production-style stack:

scripts/bootstrap.sh
scripts/stack.sh up --mode prod

Default install mode includes one seeded docker demo agent plus its daemon container.

For a clean install without demo data:

scripts/stack.sh up --mode prod --skip-test-data

Developer Setup

Development, test/demo, and local release work require the child repos at:

./ab-back
./ab-front
./ab-pty

Start the bind-mount development stack with:

scripts/stack.sh up --mode dev

Default developer mode also includes the seeded docker-demo-agent.

For a clean dev stack:

scripts/stack.sh up --mode dev --skip-test-data

Quick Verify

scripts/stack.sh ps --mode prod
curl http://127.0.0.1:8520/health
curl http://127.0.0.1:8520/api/auth/status

Frontends:

http://127.0.0.1:5281

Default install also seeds:

docker-demo-agent

Test Stack

For an isolated clickable test environment with a fresh DB and two seeded docker remote agents:

scripts/test-up.sh

Required host tools:

docker
docker compose
bash
curl
python3
realpath

If the test stack already exists, the script prompts before tearing it down. Answering no must leave the current test environment untouched and exit cleanly.

Read the full file on GitHub · 188 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.

2mo ago First seen · 188 lines · 1,140 tokens per session scan A 5923516183a3

Subscribe to this mod's changes

ab AGENTS.md is an instructions file published in the GitHub repository agent-bridges/ab (40 stars, last pushed 5mo ago), licensed MIT. It adds 1,140 tokens to every session, about $0.0046 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

agent-bridge ai-agents canvas devtools open-source pty

ab AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ab AGENTS.mdagent-bridges/ab	Instructions file	40	5mo ago	MIT	A	1,140	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	2,022	GitHub Copilot

ab: Instructions file for Codex