add-cli-command

add-cli-command is a skill for Claude Code, Codex from SII-Holos/synergy. It costs 61 tokens per session (1,663 once invoked), scanned A, original, MIT.

A guide for adding or changing commands in the installed Synergy command-line interface, including their arguments, options, aliases, help text, and exit behavior.

In plain words
What is it for?
Use it to add command groups, positional arguments, options, streaming output, confirmations, structured output, root registration, and behavior tests.
Why use it?
It helps a new command fit the existing CLI structure and connect correctly to the owning application logic. It also clarifies when a change belongs in the installed CLI versus the repository-only development tool.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to add command groups, positional arguments, options, streaming output, confirmations, structured output, root registration, and behavior tests.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sii-holos/synergy/add-cli-command
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add SII-Holos/synergy --skill add-cli-command
Clone the repo
git clone --depth 1 https://github.com/SII-Holos/synergy

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

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README.md
[![agentmods](https://agentmods.dev/badge/skills/sii-holos/synergy/add-cli-command/github.svg)](https://agentmods.dev/skills/sii-holos/synergy/add-cli-command)
Your own site
<a href="https://agentmods.dev/skills/sii-holos/synergy/add-cli-command"><img src="https://agentmods.dev/badge/skills/sii-holos/synergy/add-cli-command/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for add-cli-command

Your own site · 80×15
<a href="https://agentmods.dev/skills/sii-holos/synergy/add-cli-command"><img src="https://agentmods.dev/badge/skills/sii-holos/synergy/add-cli-command.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,663 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00061 $0.01663
Opus 5.5 $0.00024 $0.00665
Sonnet 5.5 $0.00012 $0.00333
Haiku 4.5 $0.00006 $0.00166

Measured 5d ago against content hash a5d145adaaee, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

add-cli-command scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.synergy/skill/add-cli-command/SKILL.md · 77 lines

How it starts

The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Add a CLI Command

Discover the Contract

  1. Read CLI reference, the single parser in packages/cli/src/main.ts, and the runtime command catalog in packages/cli/src/cli/runtime-commands.ts, and the selected owners’ src/cli-adapter.ts.
  2. Locate the nearest command with the same shape: local operation, server-attached operation, nested command group, streaming output, or destructive confirmation.
  3. Decide whether the behavior belongs in the installed synergy CLI or the source-only bun dev orchestrator. Edit script/dev.ts only for the latter.

Implement

  1. Write a failing behavior test first when adding behavior or fixing a bug.
  2. Add or update a named yargs command. CLI-dependent owners can use the public CLI cmd() helper; Local Runtime and Server must use their own typed command definitions to preserve the dependency direction. Generic commands belong to packages/cli/src/cli/cmd/; business commands live under the owning domain’s cli/ directory and contribute through the owner’s lazy src/cli-adapter.ts. Match neighboring yargs builder, positional, alias, and output patterns rather than imposing a parallel style.
  3. Keep domain logic in its owning module. Let the command parse input, establish Scope or server attachment, call the domain API, format output, and set an appropriate exit status.
  4. Give every command, positional, and option useful help text. Support structured output when the adjacent command family already does.
  5. Register a generic root command in the CLI’s core command catalog or a business command in its owning component’s src/cli-adapter.ts; register nested commands in their owning command-group builder. Preserve the injected runtime factory. Nested product Data commands enter through runCli({ dataCommands }); the core Data builder owns path, set-home and snapshots, while Presets contributes pack, merge and move and the root migrate alias.
  6. Use generated SDK/server helpers for attached commands where the family already does. Preserve auth, directory/Scope, timeout, and error semantics. For a mixed local/attached command family, select CommandEntry.storage from parsed positionals so HTTP-only subcommands do not acquire the target Home lock. Test them while a real lock is held, and verify local subcommands still refuse competing ownership. Installation commands use Plugin Host's installation manager. Keep module trust separate from API4 grants, preserve activation journals, and verify both next-start selection and workers pinned to an older running generation.
  7. Regenerate the SDK with ./script/generate.ts only if an API route or OpenAPI-visible schema changed.

Read the full file on GitHub · 77 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago Changed · +1 lines a5d145adaaee
  2. 11d ago Changed · +18 lines · +2 tokens per session 4646dfc4f462
  3. 21d ago Changed · +1 lines 7db8f0c8d10f
  4. 22d ago Changed 937208f90f83
  5. 1mo ago Changed · +4 lines · -1 tokens per session 15f60fd3b1e7
  6. 1mo ago First seen · 53 lines · 60 tokens per session scan A a7ab459e2564

Subscribe to this mod's changes

add-cli-command is a skill published in the GitHub repository SII-Holos/synergy (386 stars, last pushed today), licensed MIT. It adds 61 tokens to every session and 1,663 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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