Synapse: Instructions file for Codex

AGENTS.md

Synapse AGENTS.md is an instructions file for Codex, OpenCode from droxer/Synapse. It costs 605 tokens per session, scanned A, original, Apache-2.0.

Repository instructions for Synapse that map its commands, code style, architecture, documentation, and runtime behavior.

In plain words
What is it for?
Finding development and test commands, following Python and TypeScript conventions, understanding the backend, web app, and desktop shell, and locating reference documentation.
Why use it?
They give coding agents a clear route through a large project instead of requiring them to guess where rules and technical details live.

Instructions file for CodexOpenCode

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

This is droxer/Synapse's own configuration. It tells Codex and OpenCode how to work on Synapse 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 Synapse configures →

Reuse

Borrowing it

Nothing to install: this file belongs to droxer/Synapse. 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/droxer/Synapse/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/droxer/Synapse

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 Synapse AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/droxer/synapse/agents-md/github.svg)](https://agentmods.dev/instructions/droxer/synapse/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/droxer/synapse/agents-md"><img src="https://agentmods.dev/badge/instructions/droxer/synapse/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.

agentmods 80×15 button for Synapse AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/droxer/synapse/agents-md"><img src="https://agentmods.dev/badge/instructions/droxer/synapse/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 605 This file is loaded in full into every session.
When invoked 605 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 $0.00605 $0.00605
Opus 5.5 $0.00242 $0.00242
Sonnet 5.5 $0.00121 $0.00121
Haiku 4.5 $0.00060 $0.00060

Measured 2mo ago against content hash 23cd9f85d2d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Synapse 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 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.

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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

AGENTS.md · 53 lines

How it starts

The opening of the file, as written. The whole thing — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Navigation map for AI coding agents (Cursor, Copilot, etc.) working in this repository. Detailed content lives under docs/reference/; the full doc tree is docs/README.md.

There is no separate .cursorrules or .github/copilot-instructions.md. See docs/reference/agent-instructions-note.md.

Commands and quality

Topic Doc
Makefile (make dev, install, lint, desktop) docs/reference/commands.md
pytest, ruff docs/reference/backend-testing.md
Agent evals (make evals) docs/reference/agent-evals.md
Alembic migrations docs/reference/database-migrations.md

Code style

Topic Doc
Python / FastAPI docs/reference/style-python.md
TypeScript / Next.js docs/reference/style-typescript.md

Architecture and layout

Topic Doc
Stack overview (FastAPI, Next.js, SSE) docs/reference/architecture-overview.md
backend/ map docs/reference/backend-layout.md
web/ map docs/reference/frontend-layout.md
Tauri desktop shell docs/reference/desktop-shell.md

Runtime behavior

Topic Doc
Web chat flow docs/reference/data-flow-chat.md
Channels (Telegram, etc.) docs/reference/data-flow-channels.md
Patterns (immutability, events, tools, skills) docs/reference/patterns.md

Memory, environment, and longer guides

Topic Doc
Agent memory (compaction, persistence, facts) docs/agent-memory-management.md
Environment variables docs/reference/environment.md
Full development guide docs/development.md
Setup docs/setup.md
Desktop app (deep dive) docs/desktop-app.md

Read the full file on GitHub · 53 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. 2mo ago First seen · 53 lines · 605 tokens per session scan A 23cd9f85d2d5

Subscribe to this mod's changes

Synapse AGENTS.md is an instructions file published in the GitHub repository droxer/Synapse (5 stars, last pushed 25d ago), licensed Apache-2.0. It adds 605 tokens to every session, about $0.0024 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.

Related

Synapse AGENTS.md compared with instructions from other repositories

Synapse AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
Synapse AGENTS.mddroxer/SynapseInstructions file525d agoApache-2.0A605Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA2,022GitHub Copilot