ai-writing-behavior SKILL.md skillA

ai-writing-behavior from arcasilesgroup/ai-engineering is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add arcasilesgroup/ai-engineering/ai-writing-behavior@git:20260926.b0fd9cf

Pins git:20260926.b0fd9cf in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
arcasilesgroup/ai-engineering
Path
skills/ai-writing-behavior/SKILL.md
Versions recorded
4
Latest version
git:20260926.b0fd9cf, committed Sep 26, 2026
First version recorded
Sep 1, 2026
Size
9,052 bytes
Repository stars
62
License
Apache-2.0

Authors and revises Agent Behavior BEHAVIOR.md specs that capture recurring, judgeable agent conduct. Use when creating, reviewing, splitting, grouping, or calibrating behavior specs, or when translating trace failures and runtime guidance into durable behaviors. Trigger for "write a behavior spec", "turn this failure into a behavior", "calibrate this behavior", "BEHAVIOR.md". Not for merely scoring a completed trajectory — use /ai-verify — nor for writing a runtime prompt.

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

# Writing Agent Behavior

Write the smallest durable behavior spec that lets people and evaluators distinguish acceptable from unacceptable conduct across real trajectories.

The bundled [Agent Behavior specification](references/agent-behavior-specification.md) is the complete format contract for this skill. The skill does not require the Agent Behavior source repository, a network connection, or any documentation outside this directory.

## Start from source evidence

1. Read the bundled [Agent Behavior specification](references/agent-behavior-specification.md) before authoring or validating a behavior. A target project may add local conventions, but do not depend on a source checkout or external documentation for the core format.
2. Inspect related `BEHAVIOR.md` files before creating a new one.
3. Read the actual prompts, skills, tool instructions, traces, or user decisions that establish the intended conduct. Separate observed behavior from intended behavior.
4. Identify whether the task is a new spec, a revision, a split, or a merge. Preserve existing intent unless the evidence explicitly changes it.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add arcasilesgroup/ai-engineering/ai-writing-behavior@sha256:13ef974bfd9f55c1

The line at the top of this page pins the label git:20260926.b0fd9cf, 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_sk554aatcmryxdnu.svg)](https://markdownregistry.com/a/art_sk554aatcmryxdnu)

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

Versions

The registry has recorded 4 versions of this file, between Sep 1, 2026 and Sep 26, 2026, about one every 9 days.

versioncommittedcommitsizeaudit
git:20260926.b0fd9cf latest2026-09-26 b0fd9cf 9,052 BA view · diff
git:20260910.d0213302026-09-10 d021330 9,060 BA view · diff
git:20260901.88246a62026-09-01 88246a6 8,833 BA view · diff
git:20260901.dca22e52026-09-01 dca22e5 2,231 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9052 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

arcasilesgroup/ai-engineering · 62 stars · license Apache-2.0 · pushed 2026-10-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_sk554aatcmryxdnu
GET https://markdownregistry.com/api/v1/resolve?ref=arcasilesgroup/ai-engineering/ai-writing-behavior
GET https://markdownregistry.com/api/v1/blob/13ef974bfd9f55c1eb7726fd3626ecbbf63ae14f16059e5694572c874311f1b1

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: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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