Composio
Customize tool schemas before agents see them
Composio’s schema modifiers let you rewrite a tool’s schema before it reaches an agent. Use them to adjust descriptions, add or hide parameters, and set defaults when the raw tool schema needs guardrails.
Agenticness = how independently a tool can take action, scored across 9 dimensions. Scored independently by David Kooi, Skylark Creations — see full rubric →
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What's happened with Composio lately
- Score changeRubric upgrade v3_0 → v3.1: score 1/32 → 9/361 → 9/36(+8)
Rubric upgrade: agenticness v3.0 (8 dims, /32) → v3.1 (9 dims, /36). Adds Dim 9 (Operator Sovereignty), splits Dim 6 into 6a/6b lenses, tightens Dim 4 autonomous-retry distinction. Not a product change — score shift reflects new dimension + recalibrated rubric, not a change in the tool. Fanout suppressed.
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News mentions sourced from our news feed; score changes from periodic re-evaluations.
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About
Schema Modifiers are a Composio SDK middleware feature for developers building agents with external tools. They sit between your tool registry and the agent, letting you change how a tool appears before the model decides whether and how to use it.
This is not a standalone agent product; it is a low-level customization layer for Composio tool schemas. It can help when an agent needs clearer instructions or when certain arguments should be required, removed, or given defaults, but it does not...
Executes tasks you assign, one step at a time, within narrow domains.
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