silico AGENTS.md

A project instruction file for coding agents working with silico, a software project and its related GCU setup. It tells agents to read the complete file and follow a specific startup order.

In plain words
What is it for?
Use it when an agent must work in silico or create a GCU that depends on it, especially during initial setup.
Why use it?
It helps prevent agents from acting on incomplete instructions or starting project work in the wrong order.

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/tig/silico/agents-md
Clone the repo
git clone --depth 1 https://github.com/tig/silico

Made for: Codex, OpenCode.

Per session 23,206 This file is loaded in full into every session.
When invoked 23,206 The same file — it is already loaded in full.
Security scan A 1 finding. 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 $0.23206 $0.23206
Opus 5 $0.11603 $0.11603
Sonnet 5 $0.04641 $0.04641
Haiku 4.5 $0.02321 $0.02321

Measured 2d ago against content hash 597bee70f80a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

silico 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 2d 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.

| **WebFetch / “fetch summarizer” of AGENTS.md** — act on a garbled or truncated summary | Prefer local path, `curl`/`Invoke-WebRequest` to a temp file + Read, or a tool that returns **full** body. If a summarizer garble
AGENTS.md · 1,155 lines

How it starts

The opening of the file, as written. The whole thing — 1,155 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Canonical guidance for AI coding agents (Claude Code, Grok Build, Copilot, Codex, and kin) working in silico or scaffolding a GCU that depends on it.

Human overview: README.md. Tenets: specs/tenets.md. Phrase book: specs/lexicon.md. first-ship narrative: specs/prfaq.md FAQ 5. Build target: specs/silicov1.md.

FIRST ACTION — Stage 0 (first ship / “getting started for agents”)

When the human points at silico / first ship / “getting started for agents”, do this exact order.

0 — Load this file (full text, not a fetch digest)

You are not following silico until you have the full text of this AGENTS.md (local silico clone, GCU plate after scaffold, or download https://raw.githubusercontent.com/tig/silico/main/AGENTS.md and read the file).

Fail Correct
WebFetch github.com/tig/silico (README/homepage) and start from the digest Open this file (or the raw URL), then Stage 0 tools
WebFetch / “fetch summarizer” of AGENTS.md — act on a garbled or truncated summary Prefer local path, curl/Invoke-WebRequest to a temp file + Read, or a tool that returns full body. If a summarizer garbled it: re-download and read full text before any Stage 0 claim
Treat a README one-liner about Stage 0 as the full contract README is human entry; this file is Priority 1 for agents

A second-hand README or lossy fetch summary is luck, not diligence — even if it mentions silico welcome.

1 — Stage 0 tools (after this file is open in full)

Do not open with tooling narration, COM folklore, PR strategy, bedside init, vendoring third_party/, scaffold, or a start-gate chooser.

# --- TURN 1 (0a only): run tool, paste orientation, name the human act, END TURN ---
silico welcome
# Paste/adapt that output as the ONLY operator-facing content of this turn.
# End with the operator next-step line from welcome (reply ok/go when ready).
# Do NOT call bedside ask / host AskUserQuestion in this same turn (modal hides 0a).
# Do NOT leave a free-text cliff ("Start gate is next") with no human act named.

# --- TURN 2 (0b only): FIRST act after any short operator reply (ok / go / yes / …) ---
# Open the structured chooser immediately — do not re-welcome, do not ask free-text
# "shall I open the gate?", do not wait for a second free-text "yes".
bedside ask --id start-first-ship --prompt "Start first ship on this machine?" --choices yes,adjust --default yes
# or host structured picker with the SAME id / prompt / choices (yes, adjust only).
# Say once if using the host gate shell.

Read the full file on GitHub · 1,155 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. 2d ago First seen · 1,155 lines · 23,206 tokens per session scan A 597bee70f80a

Subscribe to this mod's changes

silico AGENTS.md is an instructions file published in the GitHub repository tig/silico (11 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 23,206 tokens to every session, about $0.1160 per session on Opus 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 2026-08-31.

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