Harness Engineering
10xChengTu/harness-engineering
Set up and improve harness engineering (AGENTS.md, docs/, lint rules, eval systems, project-level prompt engineering) for AI-agent-friendly codebases.
Runs the start-of-task routine for an agent working in a multi-agent hive: reads memory.md, processes new inbox messages and reminds the agent to record durable facts before ending.
Install Munder Difflin Hive Sync
$ npx skills add HarnessMD/munder-difflin --skill md-hive-sync -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install HarnessMD/munder-difflin md-hive-sync --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/HarnessMD/munder-difflin.git skills-src && mkdir -p .claude/skills && cp -r skills-src/resources/skills/md-hive-sync .claude/skills/md-hive-sync && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "md-hive-sync" agent skill from https://github.com/HarnessMD/munder-difflin/tree/main/resources/skills/md-hive-sync into .claude/skills/md-hive-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "md-hive-sync", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/HarnessMD/munder-difflin/tree/main/resources/skills/md-hive-syncType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add HarnessMD/munder-difflin --skill md-hive-sync -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install HarnessMD/munder-difflin md-hive-sync --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HarnessMD/munder-difflin.git skills-src && mkdir -p .agents/skills && cp -r skills-src/resources/skills/md-hive-sync .agents/skills/md-hive-sync && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "md-hive-sync" agent skill from https://github.com/HarnessMD/munder-difflin/tree/main/resources/skills/md-hive-sync into .agents/skills/md-hive-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "md-hive-sync", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add HarnessMD/munder-difflin --skill md-hive-sync -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install HarnessMD/munder-difflin md-hive-sync --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HarnessMD/munder-difflin.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/resources/skills/md-hive-sync .cursor/skills/md-hive-sync && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "md-hive-sync" agent skill from https://github.com/HarnessMD/munder-difflin/tree/main/resources/skills/md-hive-sync into .cursor/skills/md-hive-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "md-hive-sync", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/HarnessMD/munder-difflin.git --path resources/skills/md-hive-sync--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add HarnessMD/munder-difflin --skill md-hive-sync -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install HarnessMD/munder-difflin md-hive-sync --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HarnessMD/munder-difflin.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/resources/skills/md-hive-sync .gemini/skills/md-hive-sync && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "md-hive-sync" agent skill from https://github.com/HarnessMD/munder-difflin/tree/main/resources/skills/md-hive-sync into .gemini/skills/md-hive-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "md-hive-sync", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install HarnessMD/munder-difflin md-hive-syncInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add HarnessMD/munder-difflin --skill md-hive-sync -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/HarnessMD/munder-difflin.git skills-src && mkdir -p .github/skills && cp -r skills-src/resources/skills/md-hive-sync .github/skills/md-hive-sync && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "md-hive-sync" agent skill from https://github.com/HarnessMD/munder-difflin/tree/main/resources/skills/md-hive-sync into .github/skills/md-hive-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "md-hive-sync", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add HarnessMD/munder-difflin --skill md-hive-sync -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install HarnessMD/munder-difflin md-hive-sync --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HarnessMD/munder-difflin.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/resources/skills/md-hive-sync .opencode/skills/md-hive-sync && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "md-hive-sync" agent skill from https://github.com/HarnessMD/munder-difflin/tree/main/resources/skills/md-hive-sync into .opencode/skills/md-hive-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "md-hive-sync", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
md-hive-sync- GitHub stars
- 8.6k
- Token cost
- ~331 tokens
- SKILL.md length
- 111 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- MIT
At a glance
Runs the start-of-task routine for an agent working in a multi-agent hive: reads memory.md, processes new inbox messages and reminds the agent to record durable facts before ending.
- Works in 4 steps: Read memory — Read $AGENT_DIR/memory.md… → Check inbox — list and read all files in… → Report — summarize what you found in… → …
- Starting a new task and syncing with the multi-agent hive
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Checking an agent's inbox for new coordination messages
What it does
At the start of a task the agent reads $AGENT_DIR/memory.md for context carried over from earlier sessions, then lists and reads every file in $AGENT_DIR/inbox/ that is not already in inbox/.done/, acting on each message and moving the handled file into the done folder with mv. It reports back a summary of what it found in memory and any new inbox messages, noting anything assigned to it or relevant to the current session.
Before the conversation closes, the skill reminds the agent to append durable facts, decisions and outcomes to memory.md so a future session picks up the context. If AGENT_DIR is not set, running echo $AGENT_DIR locates the agent's directory under the hive root.
When your agent uses it
- Starting a new task and syncing with the multi-agent hive
- Checking an agent's inbox for new coordination messages
- Recording durable facts before ending a session so the next one has them
Example prompts
- “Sync with the hive before we start this task.”
- “Check my hive inbox for anything assigned to me.”
- “Before you finish, write today's decisions into memory.md.”
Requirements
- An AGENT_DIR environment variable pointing at the agent's hive directory
- Pre-approved tools (allowed-tools): Read, Bash
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Read memory — Read $AGENT_DIR/memory.md for durable context from prior sessions.
- Check inbox — list and read all files in $AGENT_DIR/inbox/ that are NOT in inbox/.done/. For each message
- Report — summarize what you found in memory and any new inbox messages. Note any tasks assigned to you or information relevant to the…
- End-of-task reminder — before closing this conversation, append durable facts, decisions, and outcomes to $AGENT_DIR/memory.md so…
What it can do on your machine
Read from SKILL.md and the folder at commit 2c64612. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadBash
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Munder Difflin Hive Sync loads about 331 tokens when it runs. Until then it costs about 111 tokens; SKILL.md has 111 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Bash
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from HarnessMD/munder-difflin at commit 2c64612, republished under its MIT licence (© HarnessMD). 111 words, ~331 tokens.
Download SKILL.mdSave it as
.claude/skills/md-hive-sync/SKILL.md (or your agent's skills folder).- name
- md-hive-sync
- description
- Munder Difflin hive sync — runs the start-of-task hive protocol steps: reads memory.md, checks inbox/ for new messages, and reminds you to record durable facts in memory.md and write coordination files before ending. Use when asked to "sync with the hive", "check my inbox", "hive status", or "hive sync". Proactively suggest at the start of a new task if you haven't checked your hive inbox in this conversation. (munder-difflin)
- allowed-tools
- Read, Bash
- version
- 1.0.0
Hive Sync
Run the mandatory hive start-of-task steps:
Read memory —
Read $AGENT_DIR/memory.mdfor durable context from prior sessions.Check inbox — list and read all files in
$AGENT_DIR/inbox/that are NOT ininbox/.done/. For each message:- Act on the message.
- Move the handled file into
$AGENT_DIR/inbox/.done/withmv.
Report — summarize what you found in memory and any new inbox messages. Note any tasks assigned to you or information relevant to the current session.
End-of-task reminder — before closing this conversation, append durable facts, decisions, and outcomes to
$AGENT_DIR/memory.mdso future-you remembers.
Run echo $AGENT_DIR if the variable is not set to locate your agent directory under the hive root.
© HarnessMD, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in resources/skills/md-hive-sync of HarnessMD/munder-difflin.
Open the folder on GitHubat commit 2c64612
Compare with similar skills
Munder Difflin Hive Sync next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Munder Difflin Hive Sync this skillHarnessMD/munder-difflin | 8.6k | — | ~331 | Automated safety check: Notes | MIT | |
| Harness Engineering10xChengTu/harness-engineering | 102 | 1 repos | ~1k | Automated safety check: Pass | None | |
| Agent Startersmvschwarz/openrig | 6.2k | — | ~1.7k | Automated safety check: Pass | Apache-2.0 | |
| Durable Session StateZaxbyHub/opencode-swarm | 493 | — | ~896 | Automated safety check: Pass | MIT | |
| MetaBot CLIxvirobotics/metabot | 994 | — | ~573 | Automated safety check: Pass | MIT | |
| Orca CLIstablyai/orca | 88k | 2 repos | ~593 | Automated safety check: Pass | MIT |
Similar skills
Agent Starters
mvschwarz/openrig
Covers authoring, inspecting, refreshing, promoting and deprecating named Agent Starters, the reusable starting points for agent seats in a rig.
Durable Session State
ZaxbyHub/opencode-swarm
Keeps plans, decisions, evidence and reviewer verdicts in small files so long multi-phase tasks survive context compaction and session resumes.
MetaBot CLI
xvirobotics/metabot
Documents the unified `metabot` CLI for personal memory, the skill hub, durable agent messaging, the agent registry, T5T status and scheduling.
Orca CLI
stablyai/orca
Operate Orca-managed worktrees, folder contexts, terminals, repos, automations, artifacts, skill sharing, worktree comments, and Orca's embedded browser…
Beads Task Memory
gastownhall/beads
Tracks multi-session work with dependencies in the bd issue tracker so the agent can find ready tasks and recover its context after conversation compaction.
More from HarnessMD/munder-difflin
Temporal Date Window Resolver
HarnessMD/munder-difflin
Resolves a named time window like lastWeek, last30Days or lastQuarter into exact ISO start and end dates relative to the current moment, with no files written and no network calls.
Worker Capability Catalog
HarnessMD/munder-difflin
Read-only catalog that tells a spawned worker agent its environment variables, temporal date-range skills and how to call each integration.
Read-Only Code Audit
HarnessMD/munder-difflin
Scans the working directory for ignored errors, hard-coded secrets, debt comments, dead exports and type gaps, and reports findings by severity without editing files.
Today Date Resolver
HarnessMD/munder-difflin
Resolve "today" to a concrete ISO date range relative to your run time — today. Returns inclusive civil dates plus exact UTC instants so you have temporal…
Yesterday Date Resolver
HarnessMD/munder-difflin
Resolve "yesterday" to a concrete ISO date range relative to your run time — yesterday. Returns inclusive civil dates plus exact UTC instants so you have…
Md Fetch Summarize
HarnessMD/munder-difflin
Fetch a URL and return a concise markdown summary of its content.
Related
Categories
Questions about Munder Difflin Hive Sync
What does Munder Difflin Hive Sync do?
Runs the start-of-task routine for an agent working in a multi-agent hive: reads memory.md, processes new inbox messages and reminds the agent to record durable facts before ending. done/, acting on each message and moving the handled file into the done folder with mv. It reports back a summary of what it found in memory and any new inbox messages, noting anything assigned to it or relevant to the current session.
When should I use Munder Difflin Hive Sync?
Munder Difflin Hive Sync fits situations like: starting a new task and syncing with the multi-agent hive; checking an agent's inbox for new coordination messages; recording durable facts before ending a session so the next one has them.
How do I install Munder Difflin Hive Sync in Claude Code?
Run `npx skills add HarnessMD/munder-difflin --skill md-hive-sync -a claude-code`. Or copy the skill folder (resources/skills/md-hive-sync in HarnessMD/munder-difflin) into .claude/skills/md-hive-sync in your project. Claude Code loads it when a task matches its description.
How do I install Munder Difflin Hive Sync in Codex?
Run `npx skills add HarnessMD/munder-difflin --skill md-hive-sync -a codex`. Or copy the skill folder (resources/skills/md-hive-sync in HarnessMD/munder-difflin) into .agents/skills/md-hive-sync in your project. Codex loads it when a task matches its description.
Can I use Munder Difflin Hive Sync in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add HarnessMD/munder-difflin --skill md-hive-sync -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/md-hive-sync, .gemini/skills/md-hive-sync, .github/skills/md-hive-sync and .opencode/skills/md-hive-sync in your project.
What does Munder Difflin Hive Sync need to run?
SKILL.md names no scripts, command-line tools or credentials: Munder Difflin Hive Sync is instructions for the agent only. Our summary lists: An AGENT_DIR environment variable pointing at the agent's hive directory. Its frontmatter pre-approves these tools: Read, Bash.
Does Munder Difflin Hive Sync access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Munder Difflin Hive Sync safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Munder Difflin Hive Sync use?
Munder Difflin Hive Sync is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Munder Difflin Hive Sync use?
About 331 tokens (SKILL.md is roughly 1.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Munder Difflin Hive Sync?
Skills that share tags, products or a category with Munder Difflin Hive Sync: Harness Engineering (10xChengTu/harness-engineering, 102 stars), Agent Starters (mvschwarz/openrig, 6.2k stars), Durable Session State (ZaxbyHub/opencode-swarm, 493 stars) and MetaBot CLI (xvirobotics/metabot, 994 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Munder Difflin Hive Sync?
HarnessMD (a GitHub organization) maintains it in HarnessMD/munder-difflin, which has 8,603 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 9, 2026.
Source: HarnessMD/munder-difflin on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.