Borrowing it
Nothing to install: this file belongs to theanibalos/MicroCoreOS. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/theanibalos/MicroCoreOS/main/AGENTS.mdgit clone --depth 1 https://github.com/theanibalos/MicroCoreOSWrote 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.
[](https://agentmods.dev/instructions/theanibalos/microcoreos/agents-md)<a href="https://agentmods.dev/instructions/theanibalos/microcoreos/agents-md"><img src="https://agentmods.dev/badge/instructions/theanibalos/microcoreos/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.
<a href="https://agentmods.dev/instructions/theanibalos/microcoreos/agents-md"><img src="https://agentmods.dev/badge/instructions/theanibalos/microcoreos/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.04555 | $0.04555 |
| Opus 5.5 | $0.01822 | $0.01822 |
| Sonnet 5.5 | $0.00911 | $0.00911 |
| Haiku 4.5 | $0.00456 | $0.00456 |
Grade A, and why
MicroCoreOS 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 1mo 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.
microcoreos plan validate # The 18 plan rules, OFFLINE (no server, no jq, no curl) How it starts
The opening of the file, as written. The whole thing — 267 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MicroCoreOS — AI Agent & Architecture Guide
This file is the single, absolute entry point for any AI agent (Gemini, Claude, GPT, etc.) working in this codebase. All development must strictly adhere to these principles to maintain the integrity of the Elastic Monolith.
🛠️ Maintainer Mandate: Framework Core vs Downstream Application Guides
You are working in the MicroCoreOS framework repository.
1. Two Guides, Two Audiences
AGENTS.md(this file): The guide for AI agents developing the MicroCoreOS Framework itself (Kernel, Base Tools, Devtools, CLI, Packaging).microcoreos/project_agents.md: The template guide shipped into downstream user applications created viamicrocoreos new.
2. Synchronization Rule (MANDATORY)
Whenever you introduce, update, or refactor:
- Application conventions or rules (plugins, event contracts, HTTP endpoints, auth validators, DI)
- CLI commands intended for application developers (
microcoreos plan validate,migrate,check,schema,add) - Testing patterns, fixtures, or mocks in
conftest.py
YOU MUST KEEP microcoreos/project_agents.md UPDATED IN LOCKSTEP.
Never let microcoreos/project_agents.md drift from the canonical application patterns. Any change to how developers or their agents write apps must immediately be reflected in microcoreos/project_agents.md.
🚦 Start here: microcoreos status
One command, before anything else. It answers the three questions that
silently derail a session: which plan is actually active (and whether it is
still the shipped template), how much of it is done, and whether
AI_CONTEXT.md still describes the code on disk.
There is exactly one plan path: plans/active_plan.yaml. The workflows,
the executor prompts and the checklist cross-check read that path and no other.
A plan written to plans/my_feature.yaml is a plan nothing will ever execute —
and because the shipped template is itself a valid plan, an agent that opens
active_plan.yaml and finds it untouched will build the example domain and
report success. That is why the template carries template: true and fails
validation until you delete the line.
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.
- 1mo ago Changed · +21 lines · +292 tokens per session 8e1cf858a0bf
- 2mo ago Changed · +1 lines · +28 tokens per session 68329223417a
- 2mo ago First seen · 245 lines · 4,235 tokens per session scan A a8ac60c34957
MicroCoreOS AGENTS.md is an instructions file published in the GitHub repository theanibalos/MicroCoreOS (22 stars, last pushed 1mo ago), licensed MIT. It adds 4,555 tokens to every session, about $0.0182 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.
MicroCoreOS AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| MicroCoreOS AGENTS.mdtheanibalos/MicroCoreOS | Instructions file | 22 | 1mo ago | MIT | A | 4,555 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |