merkle: Instructions file for Codex

AGENTS.md

merkle AGENTS.md is an instructions file for Codex, OpenCode from farchanjo/merkle. It costs 1,012 tokens per session, scanned A, original, Apache-2.0.

A project guide for coding agents working on Merkle, a local-first vault that connects to AI tools through the MCP standard. It records the project's architecture, specifications, and commands.

In plain words
What is it for?
Use it when an agent needs to understand Merkle's Rust modules, architecture documents, specification workflow, or available Speckit commands.
Why use it?
It gives an agent the project context and required reading order before it changes code. This reduces the risk of ignoring the design or editing generated specification data incorrectly.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

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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Per session 1,012 This file is loaded in full into every session.
When invoked 1,012 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 $0.01012 $0.01012
Opus 5.5 $0.00405 $0.00405
Sonnet 5.5 $0.00202 $0.00202
Haiku 4.5 $0.00101 $0.00101

Measured 2mo ago against content hash a547b520e23a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

merkle 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 · 155 lines

How it starts

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

mcp-vault — Agent Context

Canonical map for AI agents. Dense, factual, path-anchored.

Project

Merkle local-first MCP vault. Architecture: docs/arch. Speckit plane: doc/arch (with symlinks to docs/arch). Dual-tree is intentional.

Spec-first protocol

spec-first: read docs/arch and doc/arch before code. Never hand-edit doc/.specify databases. Use the installed speckit binary.

Architecture

Hexagonal: merkle-types, domain crates, merkle-ports, adapters (merkle-adapter-companion-socket, merkle-adapter-crypto, merkle-adapter-external-services, merkle-adapter-keychain, merkle-adapter-mcp, merkle-adapter-oob, merkle-adapter-sqlite), merkle-application, merkle-companion-client, merkle-companion-contract, merkle-bdd, merkle-e2e, merkle-domain-access-mediation, merkle-domain-audit-compliance, merkle-domain-backup-recovery, merkle-domain-identity, merkle-domain-policy-permissions, merkle-domain-secret-storage.

Commands

speckit analyze
speckit ask
speckit brief
speckit check
speckit clarify
speckit commit check
speckit commit suggest
speckit completions
speckit config drift
speckit config get
speckit config list
speckit config set
speckit config unset
speckit constitution
speckit context pack
speckit context score
speckit dedupe
speckit diagram render
speckit dismiss
speckit explain
speckit feature archive
speckit feature compact
speckit feature insert
speckit feature list
speckit feature new
speckit feature renumber
speckit feature reorder
speckit feature restore
speckit feature select
speckit gitlab status
speckit gitlab sync
speckit guard check
speckit guard hook
speckit guide
speckit hook post-edit
speckit hook pre-commit
speckit hook session-start
speckit hook user-prompt
speckit implement
speckit init
speckit library add
speckit library ask
speckit library browse
speckit library export
speckit library extract
speckit library import
speckit library list
speckit library open
speckit library remove
speckit library search
speckit library serve
speckit library show
speckit library update
speckit library validate
speckit license check
speckit license list
speckit license set
speckit license show
speckit manual
speckit mermaid render
speckit migrate
speckit missing
speckit model add
speckit model api apply
speckit model api list
speckit model api select
speckit model check
speckit model fetch
speckit model list
speckit model remove
speckit model select
speckit next
speckit off
speckit on
speckit pack add
speckit pack export
speckit pack import
speckit pack list
speckit pack remove
speckit pack update
speckit plan
speckit plan setup
speckit reindex
speckit search
speckit semantic deep-status
speckit semantic enable
speckit semantic eval
speckit semantic off
speckit semantic status
speckit spec score
speckit specify
speckit stats attributes
speckit stats compliance
speckit stats corpus
speckit stats findings
speckit stats guard
speckit stats profile
speckit stats recommendations
speckit status
speckit tasks
speckit tasks setup
speckit validate
speckit verify
speckit version
speckit workflow render
make check
make test
make lint
make doctor
make doctor-full
make deploy
make build
make build-release

Read the full file on GitHub · 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. 2mo ago First seen · 155 lines · 1,012 tokens per session scan A a547b520e23a

Subscribe to this mod's changes

merkle AGENTS.md is an instructions file published in the GitHub repository farchanjo/merkle (2 stars, last pushed 25d ago), licensed Apache-2.0. It adds 1,012 tokens to every session, about $0.0040 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.

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