Cotal AGENTS.md

Cotal AGENTS.md is an instructions file for Codex, OpenCode from Cotal-AI/Cotal. It costs 3,593 tokens per session, scanned A, original, Apache-2.0.

Repository guidance for coding agents working on Cotal, a standard interface that lets software and AI agents coordinate in real time. It describes the message format, project structure, commands, and design rules.

In plain words
What is it for?
Use it before editing Cotal code, particularly when working on message schemas, NATS and JetStream transport, authentication, discovery, storage, or other adapters.
Why use it?
It gives agents the context and constraints needed to change a communication system without breaking its shared interface or adapter boundaries.

Instructions file for CodexOpenCode

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/cotal-ai/cotal/agents-md
Clone the repo
git clone --depth 1 https://github.com/Cotal-AI/Cotal

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.

agentmods badge for Cotal AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/cotal-ai/cotal/agents-md.svg)](https://agentmods.dev/instructions/cotal-ai/cotal/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/cotal-ai/cotal/agents-md"><img src="https://agentmods.dev/badge/instructions/cotal-ai/cotal/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 3,593 This file is loaded in full into every session.
When invoked 3,593 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.03593 $0.03593
Opus 5 $0.01796 $0.01796
Sonnet 5 $0.00719 $0.00719
Haiku 4.5 $0.00359 $0.00359

Measured 5d ago against content hash 4e62784f0c8b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Cotal 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 5d 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 · 208 lines

How it starts

The opening of the file, as written. The whole thing — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Guidance for any coding agent (Claude Code, OpenCode, Codex, Cursor, and others) working in this repo. This is the canonical agent guide; CLAUDE.md points here.

Keep your answers short and to the point.

What this is

Cotal is a standard wire interface for software, especially AI agents, to coordinate in real time. The wire contract (subjects, message schemas, presence/discovery conventions) is the standard; libraries are thin clients over it. Transport is NATS + JetStream; the reference implementation is TypeScript.

Thin waist, real substance, guarded core:

  • Thin waist — the normative wire contract (subjects, schemas, presence/discovery, delivery semantics, the owner+actor auth grammar) is the standard.
  • Pluggable edges — identity, transport, storage, secrets, discovery, payments are adapters over existing building blocks. Compose, don't reinvent (e.g. any OIDC IdP plugs in via a thin auth-callout adapter).
  • Not hollow — the substance is the contract and its guarantees, the reference implementation, and the local operator tooling; not a bare shim.
  • Guard the core — keep adapters thin and swappable, and never let an adapter's or example's concepts leak into @cotal-ai/core or the shared layers.

Read these first

  • README.md: what Cotal is, for a general audience.
  • docs/README.md: the docs index and reading path.
  • docs/what-is-cotal.md (what it does) → docs/architecture.md (how) → docs/connect-claude.md (the connector).
  • SPEC.md: the normative wire contract. Where a client disagrees with the spec, the spec wins. spec/cotal-lang.md is the normative reference for the workflow language (SPEC §14); every js block in it is validated by pnpm smoke:lang-surface.
  • .internal/ (private submodule): working build-plans, research, and guidelines. Make sure it is current before changing behavior.

Read the full file on GitHub · 208 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. 5d ago First seen · 208 lines · 3,593 tokens per session scan A 4e62784f0c8b

Subscribe to this mod's changes

Cotal AGENTS.md is an instructions file published in the GitHub repository Cotal-AI/Cotal (258 stars, last pushed today), licensed Apache-2.0. It adds 3,593 tokens to every session, about $0.0180 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.