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Ollama drops tool calls when model names unlisted functions

By PulseAugur Editorial · [1 sources] ·

Ollama's generic tool parser is dropping tool calls when the model attempts to use a function not explicitly listed in the provided tools. This results in empty replies from the model, even though tokens are generated and consumed. The issue occurs with models like qwen3:0.6b when they are prompted to call a specific tool, but that tool is not included in the available tools list. A workaround involves ensuring all potential tools are included in the request, and the problem is being tracked in an upstream issue. AI

IMPACT This bug can lead to unexpected empty responses in applications using Ollama for tool calling, potentially causing user confusion or application errors.

RANK_REASON This is a bug report and workaround for a specific software product, not a new release or significant industry event.

Read on dev.to — LLM tag →

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

Ollama drops tool calls when model names unlisted functions

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0 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
This is a bug report and workaround for a specific software product, not a new release or significant industry event.
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Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product, infra
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High
Clearly on-topic for AI-industry coverage.
Story freshness
19 days old
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COVERAGE [1]

  1. dev.to — LLM tag TIER_1 English(EN) · The Homelab Postmortem ·

    Ollama drops tool calls to names not in tools and returns an empty reply

    <p><strong>TL;DR</strong>: When a model served by Ollama calls a function that isn't in the request's <code>tools</code> list, Ollama drops the call. The reply has no <code>content</code> and no <code>tool_calls</code>, but an <code>eval_count</code> above zero, so tokens were ge…

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