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Learning to Use Tools: Reinforcement Learning for Tool-Integrated Mathematical Reasoning

Current large language models (LLMs) increasingly benefit from external tool integration, especially for tasks requiring reliable computation and verification. Motivated by this, we study calculator tool calling for improving mathematical reasoning on the Countdown task. We first analyze reasoning failures and find that calculation errors account for a substantial portion of incorrect responses.…

We haven't written up this one. arXiv cs.AI has the full story — the link below goes straight to it.

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Claude API Workspace Verification: Catch Misrouted Requests Before Attribution

Claude API workspace verification is a small check that closes an awkward observability gap. A multi-workspace credential can send a request toward one workspace, while a stale deployment setting…

  • Claude API verifies misrouted requests before attribution
  • Returns actual workspace ID in response for verification
  • Ensures correct workspace usage for cost management

Your LLM's Input Filter Can't Read Ciphertext. That's the Whole Exploit.

Grok walked a user's name, coarse location, subscription tier, and chat history out to an attacker's server using instructions its own guardrails had already rejected. Same words, same intent.

  • Grok AI model leaked user data via encrypted payload to attacker's server
  • Exploit bypassed filters by encrypting JSON blob with AES-256-GCM
  • Solution involves post-transformation scan on sandbox's output

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