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Automate Oncehub tasks via Rube MCP (Composio). Always search tools first for current schemas.
Passed 16 of 19 test cases with the skill, and 9 of 19 without it.
and 6 more in the full report
9 fixed10 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 9 test cases the skill fixed. Same model, same prompt, with and without the skill.
When inspecting a Oncehub tool result from RUBE_SEARCH_TOOLS, the output contains a schemaRef field instead of a complete inline JSON schema. Which Rube MCP tool retrieves the full schema definitions?
| Checked | Without skill | With skill |
|---|---|---|
| Identifies RUBE_GET_TOOL_SCHEMAS as the tool to fetch full schemas when schemaRef is returned. | Missed | Passed |
The instructions your model reads when the skill loads.
Automate Oncehub operations through Composio's Oncehub toolkit via Rube MCP.
Toolkit docs: composio.dev/toolkits/oncehub
RUBE_MANAGE_CONNECTIONS with toolkit oncehubRUBE_SEARCH_TOOLS first to get current tool schemasGet Rube MCP: Add https://rube.app/mcp as an MCP server in your client configuration. No API keys needed — just add the endpoint and it works.
RUBE_SEARCH_TOOLS respondsRUBE_MANAGE_CONNECTIONS with toolkit oncehubAlways discover available tools before executing workflows:
RUBE_SEARCH_TOOLS
queries: [{use_case: "Oncehub operations", known_fields: ""}]
session: {generate_id: true}
This returns available tool slugs, input schemas, recommended execution plans, and known pitfalls.
RUBE_SEARCH_TOOLS
queries: [{use_case: "your specific Oncehub task"}]
test cases passed, vs 9 / 19 without
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