agent-conf-sync

agent-conf-sync

This skill invokes scripts/sync-all.sh (macOS/Linux/Git Bash) or scripts/sync-all.ps1 (Windows PowerShell) from the cyncia repo. The user describes what they want in plain language; you pick the right script, resolve paths, infer flags, run it, and summarize the result.

Source tree format (<source_root>)

A source root must contain AGENTS.md. It may optionally contain any of these folders; each is independent and missing folders are skipped with a console note:

Folder	One per	Purpose
agents/<name>.md	file	One agent / subagent definition.
skills/<name>/SKILL.md	folder	One Agent-Skills-format skill (plus optional extra files in the same folder).
rules/<name>.md	file	One rule with YAML frontmatter (description, applies-to, always-apply).
mcp-servers/<name>.json	file	One MCP server definition (body of the per-server config object, no mcpServers wrapper).

What sync-all writes

For each selected tool, sync-all writes:

Tool	Generated paths under <output_root>
cursor	AGENTS.md (copy), .cursor/{agents,skills,rules}/, .cursor/mcp.json
claude	CLAUDE.md (AGENTS + rules merged), .claude/{agents,skills}/, .mcp.json
copilot	.github/copilot-instructions.md, .github/{agents,skills,instructions}/
vscode	.vscode/mcp.json (also read by Copilot Chat in VS Code)
junie	.junie/AGENTS.md (AGENTS + rules merged), .junie/{agents,skills}/
codex	AGENTS.md (copy), AGENTS.override.md when codex-rules-mode=agents-override, .codex/agents/*.toml, .agents/skills/, .codex/config.toml mcp_servers tables when codex-sync-mcp=true

sync-agent-guidelines always emits the full AGENTS.md / CLAUDE.md / .junie/AGENTS.md — --items does not trim it. Claude and Junie have no per-rule files by default (rules are appended into the guidelines file). Codex does not generate .codex/rules from Cyncia Markdown rules because Codex .rules files are Starlark command policy; by default, Codex Markdown rule bodies are merged into root AGENTS.override.md instead.

This skill is only about invocation and reporting. For source-format details (rule frontmatter fields, secret-token translation, agent ↔ MCP linkage) see the upstream README.md.

When to apply

Apply when the user wants to (re)generate tool-specific AI-assistant config from a single generic source tree. Trigger phrases include:

• "sync all", "run sync-all", "sync agent config", "sync the config"
• "regenerate / update the rules / skills / agents / guidelines / mcp / AGENTS.override.md"
• "rebuild .cursor / .claude / .github / .junie / .codex / .agents"
• "sync MCP servers", "regenerate .vscode/mcp.json", "update Claude .mcp.json"
• "sync for Cursor and Claude", "only Copilot", "only Codex", "skip Junie"
• "clean sync", "prune stale files", "mirror deletions"

Do not apply when the user is asking about the format of rules/skills/agents, or editing source files. For that, point them to README.md.

Step 1: Detect the OS and shell

Pick the entrypoint based on the shell you'll actually execute in:

Environment	Entrypoint	Flag style
Windows native PowerShell (pwsh, powershell.exe)	scripts\sync-all.ps1	-InputRoot, -OutputRoot, -Tools, -Items, -Clean
macOS, Linux, BSD	scripts/sync-all.sh	-i, -o, --tools, --items, --clean
Git Bash / WSL on Windows	scripts/sync-all.sh (prefer Bash)	same as Unix

Detect with: $env:OS -eq "Windows_NT" in PowerShell; uname in Bash. Do not assume Unix just because the repo is cross-platform — use what the current session runs.

Step 2: Locate the script root (CONFIG_SYNC_ROOT)

Resolve the directory that contains scripts/sync-all.sh and scripts/sync-all.ps1:

1. If the workspace root has scripts/sync-all.sh, use the workspace root.
2. Else if the user named a path (e.g. vendor/cyncia), use that.
3. Else search the workspace for **/scripts/sync-all.sh and use its grandparent.
4. If still ambiguous or missing, ask once for the path.

Use absolute paths when invoking the script.

Step 3: Infer the required parameters

Input root — -i / -InputRoot (required)

The directory that contains AGENTS.md and optionally any of agents/, skills/, rules/, mcp-servers/ (see Source tree format above). Each folder is independent — sync-all skips the corresponding subscript (with a console note) when its source dir is absent. Only AGENTS.md is mandatory; if it is missing, sync-all exits with an error.

Mapping from user phrasing:

• "from .agent-config", "internal tree", "authoring root", "this repo's own source" → <CONFIG_SYNC_ROOT>/.agent-config
• "from examples", "the examples tree" → <CONFIG_SYNC_ROOT>/examples
• "from my source", "from <path>" → that path
• "in place", "same as output" → same path as output root

If nothing is stated, look at the workspace: presence of AGENTS.md + agents/ + skills/ + rules/ at some root indicates it's the source. Ask if unclear.

Output root — -o / -OutputRoot (required)

The project root where .cursor/, .claude/, .github/, .junie/, .codex/, .agents/, the root AGENTS.md copy, and root AGENTS.override.md are written. Usually the consumer project root, or this repo's root when regenerating its own outputs.

--tools / -Tools (optional; default from config)

Comma-separated subset of cursor,claude,copilot,vscode,junie,codex (case-insensitive, no spaces). If omitted, sync-all uses default-tools from .cyncia/cyncia.conf; if that property is missing, the built-in default is all six supported tools.

Phrase	Value
"all tools", "everything", no tool mentioned	omit flag (uses default-tools; built-in default all six)
"only Cursor"	cursor
"Cursor and Claude", "not Copilot, not Junie"	cursor,claude
"skip Junie"	cursor,claude,copilot,vscode,codex
"only VS Code", "just MCP for VS Code"	vscode
"Copilot with its MCP"	copilot,vscode (Copilot Chat in VS Code reads .vscode/mcp.json)
"only Codex"	codex

Synonyms: cursor ← "Cursor"; claude ← "Claude", "Claude Code"; copilot ← "Copilot", "GitHub Copilot"; vscode ← "VS Code", "VSCode", "Visual Studio Code"; junie ← "Junie", "JetBrains"; codex ← "Codex", "OpenAI Codex".

--items / -Items (optional)

Single comma-separated list of basenames without extension (e.g. delegate-to-aside, commit-style). Applied to agents, skills, and rules together.

Phrase	Value
"only the aside skill", "just delegate-to-aside"	delegate-to-aside
"just foo and bar"	foo,bar
"full sync", "all of them", no item mentioned	omit flag

Caveat: --items does not trim the guidelines merge. sync-agent-guidelines always emits the full AGENTS.md + merged rules for Claude/Junie/Codex. Mention this in the report if the user expected partial guidelines.

--clean / -Clean (optional; default: off)

Set when the user asks to remove stale outputs, prune, mirror source deletions, empty generated dirs first, or says "clean sync".

Warning — data loss risk: --clean empties the entire output directory for every sync step on every selected tool before writing: .cursor/{agents,rules,skills}, .claude/{agents,skills}, .github/{agents,instructions,skills}, .junie/{agents,skills}, .codex/agents, and .agents/skills. Any hand-authored files in those dirs are deleted. This is especially risky for .github/ since users often keep unrelated content there (workflows live in .github/workflows/ — not wiped — but a user might have put manual instruction files in .github/instructions/). Codex MCP clean is narrower: it removes/replaces only mcp_servers sections in .codex/config.toml, preserving unrelated Codex config. Flag clean risk in your pre-run note whenever -Clean is inferred, and name the specific dirs or Codex config sections affected by the --tools selection.

Step 4: Validate and run

Before running:

1. Check that <input_root>/AGENTS.md exists. If not, stop and tell the user.
2. Use absolute paths in the command.
3. Capture full stdout and stderr.

Example — macOS / Linux:

bash "/abs/path/to/cyncia/scripts/sync-all.sh" \
  -i "/abs/path/to/source-root" \
  -o "/abs/path/to/output-root" \
  --tools cursor,claude \
  --items delegate-to-aside

With clean:

bash "/abs/path/to/cyncia/scripts/sync-all.sh" \
  -i "/abs/path/to/source-root" \
  -o "/abs/path/to/output-root" \
  --clean

Example — Windows PowerShell:

& 'C:\abs\path\to\cyncia\scripts\sync-all.ps1' `
  -InputRoot 'C:\abs\path\to\source-root' `
  -OutputRoot 'C:\abs\path\to\output-root' `
  -Tools 'cursor,claude' `
  -Items 'delegate-to-aside'

On non-zero exit, surface the error and suggest fixes (missing dirs, unknown tool name, missing AGENTS.md).

Step 5: Post-run report (required)

Reply with a compact summary, not the full log:

1. Command — one line: OS/shell, script path, effective -i/-o/--tools/--items/--clean. If --tools was omitted and default-tools is visible, mention the configured default that was used.
2. Deletions / clean — list paths from log lines matching cleaned / removed / Clean. If --clean was not used, state that no clean step ran (overwrite in place only).
3. Generated / updated — from lines with -> (e.g. cursor agent ->, copilot skill ->) and == tool == headers. Group by tool. Call out AGENTS.md, AGENTS.override.md, CLAUDE.md, .github/copilot-instructions.md, .junie/AGENTS.md, .codex/config.toml, and .codex/agents/*.toml when

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