agentmods.dev

aleph: Instructions file for Codex

AGENTS.md

aleph AGENTS.md is an instructions file for Codex, OpenCode from Hmbown/aleph. It costs 594 tokens per session, scanned A, original, MIT.

A repository instruction file for Aleph, an MCP server that lets language models explore large data through search, previews, and code without placing all of it in the conversation.

In plain words
What is it for?
Use it when modifying Aleph, running its build and test checks, understanding its server and sandbox components, or contributing changes to the project.
Why use it?
It gives coding agents the project’s architecture, key files, setup commands, and testing expectations so they can work consistently in the repository.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions subagents; mentions Claude Code; mentions AGENTS.md.

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

not rated 219repo 6mo ago A scan 594 tokens original MIT
View source ↗ Hmbown/aleph aleph-web.pages.dev
Reuse

Borrowing it

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

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 aleph AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/hmbown/aleph/agents-md"><img src="https://agentmods.dev/badge/instructions/hmbown/aleph/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 594 This file is loaded in full into every session.
When invoked 594 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 $0.00594 $0.00594
Opus 5.5 $0.00238 $0.00238
Sonnet 5.5 $0.00119 $0.00119
Haiku 4.5 $0.00059 $0.00059

Measured 2mo ago against content hash a310114c4750, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

aleph 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.

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

Project instructions for Codex and other AI agents working on this repository.

What is Aleph

Aleph is an MCP server implementing Recursive Language Models (RLMs). It loads large data into RAM as in-memory contexts, letting LLMs explore data via search/peek/code execution without consuming the context window. Published on PyPI as aleph-rlm.

Build & Test

pip install -e ".[dev,mcp]"
pytest tests/ -v          # ~426 tests, ~5s
ruff check aleph/ tests/  # linter

Tests use pytest-asyncio with asyncio_mode = "auto".

Architecture

  • MCP Server: aleph/mcp/local_server.py (~150K chars) — 30+ tools, recipe engine, sub-query orchestration
  • Core RLM Loop: aleph/core.py — load context, LLM loop, code execution, convergence
  • REPL Sandbox: aleph/repl/sandbox.py + helpers.py — sandboxed exec_python with 100+ helpers
  • Sub-Query: aleph/sub_query/ — CLI backends (kimi, claude, codex, gemini) and API backend
  • Recipes: aleph/mcp/recipes.py — declarative pipeline validation and estimation

Key Files

File Purpose
aleph/mcp/local_server.py MCP server, tool registration, recipe execution
aleph/repl/helpers.py REPL helpers, Recipe DSL
aleph/repl/sandbox.py Sandbox, async bridge, sub_query injection
aleph/sub_query/cli_backend.py CLI sub-agent spawning
aleph/sub_query/__init__.py Backend detection, SubQueryConfig
aleph/mcp/recipes.py Recipe schema validation
aleph/core.py Core Aleph RLM loop

Entry Points

Command Module Purpose
aleph aleph.mcp.local_server:main MCP server (primary)
aleph-rlm aleph.cli:main Installer/configurator

Gotchas

  • SandboxConfig timeout field is timeout_seconds (not timeout)
  • Load files with absolute paths when using MCP load_file tool
  • Non-zero CLI exit codes return failure (stdout content is not treated as success)
  • sub_query_batch/sub_query_map parallel path uses raw async fn to avoid event loop deadlock
  • MCP server needs /mcp restart in Claude Code or Codex restart after code changes

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 · 594 tokens per session scan A a310114c4750

Subscribe to this mod's changes

aleph AGENTS.md is an instructions file published in the GitHub repository Hmbown/aleph (219 stars, last pushed 6mo ago), licensed MIT. It adds 594 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 2026-08-30.

LLMmcprecursivereplrlm
Related

aleph AGENTS.md compared with instructions from other repositories

aleph AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
aleph AGENTS.mdHmbown/alephInstructions file2196mo agoMITA594Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode