Multi-tool agents fail with toolResult/toolUse block mismatch
>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3563504. --> Reported by: [ronraney](https://www.drupal.org/user/3674214) >>> <p>[Tracker]<br> <strong>Update Summary: </strong>[One-line status update for stakeholders]<br> <strong>Short Description: </strong>[One-line issue summary for stakeholders]<br> <strong>Check-in Date: </strong>MM/DD/YYYY<br> <em>Metadata is used by the <a href="https://www.drupalstarforge.ai/" title="AI Tracker">AI Tracker.</a> Docs and additional fields <a href="https://www.drupalstarforge.ai/ai-dashboard/docs" title="AI Issue Tracker Documentation">here</a>.</em><br> [/Tracker]</p> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>I'm getting consistent errors using both the regular chat and deep chat blocks. It might have to do with using multiple tools or the "Send email" tool specifically. Here's the error:</p> <blockquote><p>Error: Error invoking model response: litellm.BadRequestError: BedrockException - {"message":"The number of toolResult blocks at messages.2.content exceeds the number of toolUse blocks of previous turn."}. Received Model Group=claude-3-5-sonnet Available Model Group Fallbacks=None</p></blockquote> <p>I am using an Assistant/Agent which is configured with two tools: Send email and RAG/Vector search. My provider is Amazee.ai and they use Amazon AWS with Claude. I have Sonnet 3.5 configured for chat. I am using a remove vector db and have a Search API index configured. </p> <p>I've tried to simplify my approach in configuration. One key piece of information, perhaps, is that the Explorer works for the agent. It connects to the database and produces results. When I use the actual chatbot block, however, it just says there is a service error.</p> <h4 id="summary-steps-reproduce">Steps to reproduce (required for bugs, but not feature requests)</h4> <p>Please provide information like AI modules enabled, which AI provider, browser, etc.</p> <p>I'm using Drupal 10.5.x with Drupal AI 1.2.4. I have keys configured for Amazee.ai. There isn't an issue, per se, with the connection to the database. I have a totally separate chatbot that's working fairly well at the moment (I am not entirely sure why this one is working and not the other). </p> <p>Concerning the AI Agent configuration. I had two tools enabled: RAG/Vector search and Send email. I have since removed "Send email" and it appears to be working. I would like to be able to use this tool and other tools. </p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <h3 id="summary-remaining-tasks">Remaining tasks</h3> <h3>Optional: Other details as applicable (e.g., User interface changes, API changes, Data model changes)</h3>
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