AGENTS.md@crates/nac-coreA

AGENTS.md@crates/nac-core from arcee-ai/nac is an AGENTS.md file: the standing instructions coding agents read in that repo.

Install it, pinned
mdr add arcee-ai/nac/crates/nac-core/AGENTS.md@git:20261013.54de900

Pins git:20261013.54de900 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 14 of 14 checks passed
Kind
AGENTS.md file
Repository
arcee-ai/nac
Path
crates/nac-core/AGENTS.md
Versions recorded
5
Latest version
git:20261013.54de900, committed Oct 13, 2026
First version recorded
Aug 27, 2026
Size
5,570 bytes
Repository stars
297
License
Apache-2.0

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# nac-core guide

`nac-core` owns the durable agent harness: model/tool execution, immutable
session behavior, orchestration, traditional children, permissions, execution
backends, session lifecycle, persistence, recovery, and workspace operations.
It must not own HTTP/React delivery or managed-host product onboarding.

## Invariants and dependencies

- Preserve orchestrator prompts/defaults and the three persisted session
  behaviors. Construction chooses one behavior; there is no runtime switching.
- Orchestrator workers, traditional child sessions, and managed orchestrators
  are distinct topologies. Shared lifecycle code does not make them one role.
- Durable state is generation-aware and restart-safe. Completion delivery,
  recovery markers, inbox/goals, relationships, leases, transcript revisions,
  and cancellation ordering are compatibility surfaces.
- Permission evaluation and approval cannot change the selected Local, SSH, or
  Podman backend. Non-bypassable path/sandbox/mutation policy remains separate.
- Core may depend on small inward contracts/infrastructure crates. It must not
  depend on `nac-server` or managed-host orchestration. `nac-managed` appears
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add arcee-ai/nac/crates/nac-core/AGENTS.md@sha256:d2d974c271d3c2ef

The line at the top of this page pins the label git:20261013.54de900, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_saiqeb2xdacc2gtr.svg)](https://markdownregistry.com/a/art_saiqeb2xdacc2gtr)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Aug 27, 2026 and Oct 13, 2026, about one every 12 days.

versioncommittedcommitsizeaudit
git:20261013.54de900 latest2026-10-13 54de900 5,570 BA view · diff
git:20261002.ec3fcc22026-10-02 ec3fcc2 5,162 BA view · diff
git:20260828.89f28842026-08-28 89f2884 4,853 BA view · diff
git:20260827.a3d1e082026-08-27 a3d1e08 4,740 BA view · diff
git:20260827.4a3c2202026-08-27 4a3c220 2,930 BA view

Audit of the latest version

A  14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Size between 200 bytes and 200 KB (5570 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

arcee-ai/nac · 297 stars · license Apache-2.0 · pushed 2026-11-02 · branch dev

API

GET https://markdownregistry.com/api/v1/artifacts/art_saiqeb2xdacc2gtr
GET https://markdownregistry.com/api/v1/resolve?ref=arcee-ai/nac/crates/nac-core/AGENTS.md
GET https://markdownregistry.com/api/v1/blob/d2d974c271d3c2ef461401cb942f8a5fd939735a127e11661ae569f261895e18

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: how to write a good AGENTS.md · AGENTS.md vs CLAUDE.md · which agent file does what.

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