astonish: Instructions file for Codex

AGENTS.md

astonish AGENTS.md is an instructions file for Codex, OpenCode from SAP/astonish. It costs 2,355 tokens per session, scanned A, original, Apache-2.0.

Repository instructions for Astonish, an AI-agent platform written mainly in Go with a React web interface. They describe the project layout, setup, and commands for building, testing, and linting.

In plain words
What is it for?
Understanding the repository structure, choosing where code belongs, starting the project, and running its build, test, and lint checks.
Why use it?
They help an agent find the right subsystem and follow stricter local rules before changing a large project with several interfaces and execution backends.

Instructions file for CodexOpenCode ✓ vendor

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

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

About the project

SAP/astonish is a multi-tenant AI agent platform that lets teams run agents with shared memory, reusable workflows, generated interfaces, and secure sandboxes. Teams use it either as a shared PostgreSQL-backed platform or as a standalone SQLite application, and the catalogue contains instructions for working with it.

SAP/astonish · 24 stars · on GitHub · sap.github.io

Reuse

Borrowing it

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

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.

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README.md
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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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Your own site · 80×15
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Per session 2,355 This file is loaded in full into every session.
When invoked 2,355 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 $0.02355 $0.02355
Opus 5.5 $0.00942 $0.00942
Sonnet 5.5 $0.00471 $0.00471
Haiku 4.5 $0.00235 $0.00235

Measured 24d ago against content hash babf0b718000, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

astonish 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 24d 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 · 137 lines

How it starts

The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Project overview

Astonish is an AI-agent platform distributed as one Go binary. It supports a local coding TUI, a remote multi-tenant chat/platform, HTTP/SSE APIs, reusable flows, tools/MCP, memory, browser automation, fleet orchestration, and isolated execution through Docker OverlayFS, Kubernetes, or OpenShell backends. The Studio UI is a React SPA embedded into the Go binary.

The repository is primarily:

  • Go 1.26 (go.mod, toolchain go1.26.1) for the CLI, agent runtime, API, storage, TUI, and sandbox backends.
  • React 19 + TypeScript/legacy JSX + Vite + Tailwind CSS 4 under web/.
  • Ent for scoped persistence, with SQLite for personal/development use and PostgreSQL for the multi-tenant platform.

Before changing a subsystem, read the nearest nested AGENTS.md; those files contain stricter subsystem-specific contracts and override this root guide.

Repository map

  • main.go, cmd/astonish/ — binary entry point and CLI dispatch. Commands should parse arguments and delegate; keep business logic in pkg/. Preserve local/remote command gating. Bare astonish launches local code mode in a TTY.
  • pkg/agent/ — LLM-driven agent loop, prompt construction, tool execution, compaction, delegation, and approvals.
  • pkg/api/ — platform/Studio HTTP handlers, authentication, SSE chat/fleet streams, and orchestration wiring.
  • pkg/launcher/ — composition roots for local code TUI, remote chat TUI, and server/daemon launch paths.
  • pkg/tui/, pkg/ui/ — Bubble Tea terminal clients and reusable terminal rendering.
  • pkg/tools/, pkg/browser/, pkg/codeintel/ — built-in tools, CDP browser automation, and source-code intelligence.
  • pkg/provider/, pkg/mcp/, pkg/skills/ — model providers, MCP integration, and skill loading.
  • pkg/config/ — configuration loading, defaults, and environment overrides.
  • pkg/store/ — storage interfaces and implementations/routing; tenant scope is a core invariant.
  • pkg/memory/, pkg/session/, pkg/fleet/, pkg/drill/, pkg/channels/ — major domain subsystems.
  • pkg/scheduler/ — scheduled-job registration and execution.
  • web/src/api/, web/src/components/chat/ — Studio transport contracts and chat rendering/interaction guidance.
  • pkg/sandbox/ — backend-neutral sandbox contracts plus Docker OverlayFS / Kubernetes / OpenShell implementations. Backend implementations must be concurrency-safe and lifecycle methods are intentionally idempotent.
  • ent/{platform,org,team,personal}/ — four persistence scopes. Only schema/*.go and generate.go are normally hand-edited; the remaining Ent files are generated.
  • web/src/ — Studio SPA. Entry points are main.tsx and App.tsx; api/ contains REST/SSE clients and components/ contains UI.
  • tests/e2e/, tests/e2eboot/, tests/scenarios/ — tagged E2E suites, shared bootstrap harness, and scenario catalogs/reporters.
  • docs/architecture/ — authoritative design documents. Update the relevant document when changing a documented protocol or invariant.
  • proto/, deploy/, docker/ — protocol definitions, deployment assets, and container images.

Read the full file on GitHub · 137 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. 24d ago Changed · +5 tokens per session babf0b718000
  2. 1mo ago Changed · +3 tokens per session bcbefe28b21d
  3. 1mo ago First seen · 137 lines · 2,347 tokens per session scan A 52a7c449222a

Subscribe to this mod's changes

astonish AGENTS.md is an instructions file published in the GitHub repository SAP/astonish (24 stars, last pushed today), licensed Apache-2.0. It adds 2,355 tokens to every session, about $0.0094 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 2026-08-30.

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