Cindy is an open-source local AI agent that combines coding harnesses, language models, tools, memory, and skills to complete work across files, applications, browsers, computers, and phones. Its desktop and mobile client lets users switch between Claude Code, Codex, other models, and connected services while keeping task context continuous. The catalogue instructions relate to operating or developing this agent.
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.
npx skills add makecindy/cindy --skill cindy-plugin-creatorgit clone --depth 1 https://github.com/makecindy/cindyWrote 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.
[](https://agentmods.dev/skills/makecindy/cindy/cindy-plugin-creator)<a href="https://agentmods.dev/skills/makecindy/cindy/cindy-plugin-creator"><img src="https://agentmods.dev/badge/skills/makecindy/cindy/cindy-plugin-creator/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.
<a href="https://agentmods.dev/skills/makecindy/cindy/cindy-plugin-creator"><img src="https://agentmods.dev/badge/skills/makecindy/cindy/cindy-plugin-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00048 | $0.01533 |
| Opus 5.5 | $0.00019 | $0.00613 |
| Sonnet 5.5 | $0.00010 | $0.00307 |
| Haiku 4.5 | $0.00005 | $0.00153 |
Grade A, and why
cindy-plugin-creator 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 today.
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.
How it starts
The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cindy Plugin Creator
Build a Cindy plugin from the user's request, or update an existing plugin. This Skill and its references are the authoring documentation shipped with the current Cindy host. Use these contracts instead of guessing APIs from a different release. Keep the user's language for discussion.
Workflow
- Read the authoring overview, design alignment, structure, and manifest and capabilities. For an existing plugin, inspect its ghost.json and source first. Ask only about decisions the request leaves open; use option cards when available. Summarize the intended behavior, UI, permissions and acceptance criteria before implementation, following the design reference.
- Before writing code, read the sandbox boundaries and packaging workflow. Read the capability references below as needed; do not load the whole manual at once.
- For a new plugin, prefer ghost_forge_scaffold with the appropriate plain, agent-action, node-json-rpc or node-mcp template, then edit the generated files. For an existing plugin, preserve its identity, data and compatible behavior. Use schemaVersion: 3 for new manifests and declare the first stable Cindy version actually required.
- Implement and validate the requested behavior, including Light and Dark modes for any UI. Separate current Agent tool-call operations from autonomous plugin capabilities, as described in the manifest and Agent-call references. Use tool discovery and manuals for authoring the plugin's own discovery and workflow documentation.
- Call ghost_forge_pack to validate and produce the .cindy artifact. Report what was tested and what remains unverified. Packaging does not install or publish: use ghost_forge_install only when installation is requested, and follow publishing when publication is requested.
What ships with it
37 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- agents/openai.yaml 105 B
- references/plugin-agent-call-context.md 1.3 KB
- references/plugin-agent-models.md 844 B
- references/plugin-agent-tasks.md 23 KB
- references/plugin-bundled-skills-legacy.md 3.0 KB
- references/plugin-chat-cards.md 15 KB
- references/plugin-compatibility.md 4.6 KB
- references/plugin-confirm-dialog.md 2.6 KB
- references/plugin-design.md 2.7 KB
- references/plugin-directory-picker.md 1.7 KB
- references/plugin-event-subscriptions.md 10 KB
- references/plugin-files-and-library.md 13 KB
- references/plugin-host-context.md 1.6 KB
- references/plugin-main-view.md 2.7 KB
- references/plugin-manifest.md 30 KB
- references/plugin-manual.md 3.6 KB
- references/plugin-media.md 3.6 KB
- references/plugin-message-hooks.md 3.2 KB
- references/plugin-mobile-pages.md 3.1 KB
- references/plugin-network.md 27 KB
- references/plugin-node-worker.md 19 KB
- references/plugin-notifications.md 3.5 KB
- references/plugin-overview.md 3.3 KB
- references/plugin-packaging.md 7.2 KB
- references/plugin-panel-preview.md 1.1 KB
- references/plugin-panels.md 4.8 KB
- references/plugin-publishing.md 2.8 KB
- references/plugin-recommendations.md 2.4 KB
- references/plugin-routine-events.md 4.1 KB
- references/plugin-runtime.md 25 KB
- references/plugin-sandbox.md 1.5 KB
- references/plugin-session-context.md 1.5 KB
- references/plugin-settings.md 6.9 KB
- references/plugin-structure.md 1.7 KB
- references/plugin-tool-discovery.md 4.1 KB
- references/plugin-tools.md 1.3 KB
- references/plugin-workspace-sessions.md 2.3 KB
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.
- today First seen · 86 lines · 48 tokens per session scan A 83de78a6fac2
cindy-plugin-creator is a skill published in the GitHub repository makecindy/cindy (3,219 stars, last pushed today), licensed Apache-2.0. It adds 48 tokens to every session and 1,533 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 2026-10-20.
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