customjs-automation
by ComposioHQcustomjs-automation helps Claude automate Customjs workflows through Composio Rube MCP by searching live tool schemas first, checking the customjs connection, and executing only after setup and approval.
Score: 68/100. This is acceptable for listing because it gives agents a clear trigger path for Customjs tasks through Rube MCP and enough setup/discovery instructions to execute with less guesswork than a generic prompt. For directory users, it should be treated as a lightweight connector skill rather than a fully worked Customjs automation playbook.
- Valid frontmatter clearly names the skill, describes Customjs automation via Rube MCP, and declares the required `rube` MCP dependency.
- Prerequisites and setup steps explain how to connect Rube MCP, manage the Customjs connection, and verify ACTIVE status before execution.
- The skill repeatedly instructs agents to call `RUBE_SEARCH_TOOLS` first, which reduces schema guesswork and helps agents adapt to current tool definitions.
- No support files, examples, or dedicated README are present beyond SKILL.md, so users must rely on live Rube tool discovery for actual Customjs schemas and action details.
- The repository evidence shows mostly generic Rube MCP workflow guidance rather than concrete Customjs-specific automation recipes or edge-case handling.
Overview of customjs-automation skill
What customjs-automation does
customjs-automation is a Claude skill for running Customjs-related workflow automation through Composio’s Rube MCP server. Its main value is not a fixed library of commands; it teaches the agent to discover the current Customjs tool schemas with RUBE_SEARCH_TOOLS, confirm an active customjs connection, and then execute the right Rube MCP tool for the user’s task.
This matters because Composio tool inputs can change. The customjs-automation skill is designed around live tool discovery instead of hardcoded assumptions, which makes it a better fit for agents that need reliable Customjs automation inside an MCP-enabled environment.
Best fit for Workflow Automation users
Use this skill when you want Claude to help automate Customjs operations through Rube MCP and you already expect to work inside a tool-calling client. It is best for users who need repeatable workflow steps, connection checks, schema-aware execution, and a clear “discover before acting” pattern.
It is especially useful for Workflow Automation scenarios where a vague prompt like “do this in Customjs” is not enough. The skill pushes the agent to first identify the available Customjs tools, inspect required fields, and only then run the operation.
Main adoption requirements
The key requirement is Rube MCP access. Your client must have https://rube.app/mcp configured as an MCP server, and RUBE_SEARCH_TOOLS must be available. You also need an active Customjs connection managed through RUBE_MANAGE_CONNECTIONS with toolkit customjs.
The repository is intentionally small: the main file to inspect is composio-skills/customjs-automation/SKILL.md. There are no bundled helper scripts, examples folder, or extra references, so adoption depends on your MCP setup and the live schemas returned by Rube.
How to Use customjs-automation skill
customjs-automation install and setup path
Install the skill from the Composio skills repository in a compatible Claude skills environment:
npx skills add ComposioHQ/awesome-claude-skills --skill customjs-automation
Then configure Rube MCP in your client:
https://rube.app/mcp
After installation, verify that the agent can call RUBE_SEARCH_TOOLS. Next, ask it to check the Customjs connection with RUBE_MANAGE_CONNECTIONS using toolkit customjs. If the connection is not ACTIVE, complete the returned authorization flow before asking for automation work.
Start every task with tool discovery
The most important customjs-automation usage rule is: search tools first. Do not ask the agent to guess tool names or input fields. A good first instruction is:
“Use the customjs-automation skill. Search Rube tools for this Customjs task first, inspect the current schema and required fields, confirm the customjs connection is active, then propose the execution plan before running.”
A useful discovery call should include the actual use case, not a generic phrase. For example, “Customjs operation to update an existing script configuration” is better than “Customjs task” because it gives Rube a better chance to return relevant tool slugs and pitfalls.
Turn a rough goal into a complete prompt
Weak prompt:
“Automate my Customjs task.”
Stronger prompt:
“Use customjs-automation for Workflow Automation. I need to perform this Customjs operation: [describe exact action]. First call RUBE_SEARCH_TOOLS with that use case and no assumed schema. Then check RUBE_MANAGE_CONNECTIONS for toolkit customjs. If active, show me the selected tool slug, required inputs, missing values, and risk points before execution. Do not run the final action until I confirm.”
This improves output quality because the agent gets the target action, safety boundary, connection requirement, and execution approval rule in one prompt.
Files to read before relying on the skill
Read SKILL.md first; it contains the full operational pattern. Focus on these sections: Prerequisites, Setup, Tool Discovery, and Core Workflow Pattern.
There are no extra rules/, resources/, references/, or scripts/ folders in this skill path, so do not expect hidden implementation logic. The skill is a concise instruction layer for using Rube MCP correctly with Customjs.
customjs-automation skill FAQ
Is customjs-automation useful without Rube MCP?
No. The skill requires the Rube MCP tool surface, especially RUBE_SEARCH_TOOLS and RUBE_MANAGE_CONNECTIONS. Without those tools, it becomes mostly a prompt template and cannot execute Customjs automation.
How is this better than an ordinary Claude prompt?
An ordinary prompt may guess a tool name or invent a schema. The customjs-automation skill explicitly tells the agent to discover current Customjs tools first, check the connection state, and use the returned schema. That reduces failures caused by outdated assumptions.
Is this beginner-friendly?
It is beginner-friendly if your MCP client is already configured. The workflow is simple: install the skill, connect Rube MCP, activate the Customjs connection, search tools, then execute. It is less suitable for users who have never configured MCP servers or do not know what Customjs task they want to automate.
When should I not use this skill?
Do not use it for non-Customjs work, offline scripting, or tasks that do not involve Composio/Rube. Also avoid it when you need a fully packaged automation library with local scripts, tests, and examples; this skill is a lightweight MCP operating guide, not a standalone SDK.
How to Improve customjs-automation skill
Improve customjs-automation inputs
The best results come from precise task descriptions. Include the Customjs object or workflow you want to affect, the desired end state, known IDs or names, required constraints, and whether the agent may execute or should only draft a plan.
Instead of “fix my Customjs setup,” write: “Find the available Customjs tools for reviewing my current setup, list what data each tool needs, and stop before making changes.” Clear boundaries help the agent avoid premature execution.
Prevent common failure modes
The main failure mode is skipping discovery and relying on guessed schemas. Reinforce the rule: “Always call RUBE_SEARCH_TOOLS first.” Another common issue is attempting execution before the Customjs connection is active. Require a connection check and ask the agent to report the status before continuing.
For sensitive operations, add a confirmation gate: “Show the tool call payload first; wait for approval before running.” This is useful when the returned tool may create, update, or delete data.
Iterate after the first tool result
After the first Rube response, ask the agent to summarize the returned tool slug, required fields, optional fields, and known pitfalls. If values are missing, provide them explicitly rather than asking the agent to infer them.
A strong second-turn instruction is: “Using the discovered schema only, prepare the final tool call. Mark any field you are uncertain about and explain the consequence of leaving it blank.” This keeps the workflow schema-grounded.
Add local team guidance if you reuse it
If your team uses customjs-automation regularly, add your own operating notes outside the upstream skill: approved Customjs workflows, naming conventions, required review steps, and examples of successful prompts. The upstream skill is intentionally general, so team-specific guardrails can make it safer and faster without changing its core Rube MCP pattern.