agent-comms SKILL.md skillA
agent-comms from komluk/scaffolding is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add komluk/scaffolding/agent-comms@git:20261019.32736bdPins git:20261019.32736bd in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- komluk/scaffolding
- Path
skills/agent-comms/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261019.32736bd, committed Oct 19, 2026
- First version recorded
- Jun 14, 2026
- Size
- 4,967 bytes
- Repository stars
- 16
- License
- MIT
SendMessage recipient validation and worktreePath safety (CWE-59). TRIGGER when: validating a SendMessage `to:` recipient against the agent whitelist, or a worktreePath from another agent before acting on it. SKIP: routing topology (agent Comms Protocol); git ops (use git-operations); worktree recovery (use worktree-management).
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
# Agent Comms Skill
## Purpose
Single source of truth for the two security-critical validation routines every
fan-out agent performs over inter-agent messages:
1. **Recipient validation** — never SendMessage to an unverified `to:` value.
2. **worktreePath validation** — never `cd` into or act on an unverified path
(gitops and reviewer only).
Each agent keeps a compact 3-4 line inline rule so the logic survives even when
this skill is not loaded; the full algorithm and test cases live here.
---
## 1. Recipient Validation (ALL fan-out agents)
Before any SendMessage, verify the `to:` value:
- Matches regex `/^[a-z][a-z0-9-]{2,30}$/` (kebab-case, 3-31 chars)
- Validate using TWO-STAGE matching:
1. **Exact match first:** check if `to:` matches one of: `researcher`, `architect`, `developer`, `reviewer`, `gitops`, `orchestrator`, `analyst`, `debugger`, `optimizer`, `devops`, `tech-writer`. If yes → PASS.
2. **Suffix strip only if no exact match:** strip trailing `-<digit>+` OR `-<word>` from the END of the name and re-check against whitelist. Apply ONE strip pass only (never recursive).
- Test cases (must all PASS):
- `tech-writer` → exact match → PASS
…Read the whole file at its exact version.
How to install
mdr add komluk/scaffolding/agent-comms@sha256:6723db90d94ca75cThe line at the top of this page pins the label git:20261019.32736bd, 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.
[](https://markdownregistry.com/a/art_k7futcqkzfxw75r5)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jun 14, 2026 and Oct 19, 2026, about one every 63 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261019.32736bd latest | 2026-10-19 | 32736bd | 4,967 B | A | view · diff |
| git:20260705.958c030 | 2026-07-05 | 958c030 | 5,015 B | A | view · diff |
| git:20260614.ec3a7fa | 2026-06-14 | ec3a7fa | 5,128 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4967 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
komluk/scaffolding · 16 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_k7futcqkzfxw75r5 GET https://markdownregistry.com/api/v1/resolve?ref=komluk/scaffolding/agent-comms GET https://markdownregistry.com/api/v1/blob/6723db90d94ca75c5301176f75fa2616bd70fccf2cfe47363a75b624e448565e
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.