PulseAugur
EN
LIVE 15:42:22

ClaudeAI agent rarely uses tool schemas despite prompt inclusion

A user conducted an experiment to test the effectiveness of providing tool schemas to ClaudeAI. The user found that even when full JSON schemas for their code-indexing server were included in the prompt, ClaudeAI used the tool infrequently. When the schemas were drastically reduced in size, the tool usage remained similarly low, suggesting that the presence of schemas in the prompt did not significantly increase the agent's utilization of the tool. The user also noted that the tool was rarely called in sessions where it had already been used, indicating it quickly drifted out of the agent's active working set. AI

IMPACT Suggests that current LLM agents may not effectively leverage detailed tool definitions, impacting the design of agentic systems.

RANK_REASON User experiment and observation about model behavior.

Read on r/ClaudeAI →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

ClaudeAI agent rarely uses tool schemas despite prompt inclusion

COVERAGE [1]

  1. r/ClaudeAI TIER_2 English(EN) · /u/gnoraz_theorc ·

    I removed my code-index server's tool schemas from context. The agent used it exactly as rarely as before.

    <!-- SC_OFF --><div class="md"><p>Until 18 July my code-index server was registered directly with Claude Code: 15 tools, full JSON Schema in the prompt, every turn. From 19 July it sat behind a CLI instead and the prompt got one line — about 7.4 kB of definitions replaced by 150 …