mistralai/mistral-vibe v2.15.0

v2.15.0

Repository: mistralai/mistral-vibe

Tag: v2.15.0

Published: 2026-06-12T11:19:54Z

Prerelease: no

Release notes:

Added

• [Experimental] before_tool and after_tool hooks: shell scripts declared in hooks.toml that fire around every tool call; hooks can deny the call, rewrite tool inputs, or append context to the output — enable with enable_experimental_hooks = true
• Message queue: messages typed while the agent or a !bash command is running are queued and shown above the input; Esc pauses the queue, Ctrl+C drops the last queued message (LIFO), Enter flushes the queue when paused
• Tool result output is now collapsed by default to keep responses scannable
• Common read-only shell commands (ls, cat, pwd, etc.) are allowed without approval by default
• Session deletion available directly from the resume picker
• [mcp_servers.auth] block in config for per-server MCP authentication
• Collapsed web tool output now shows the URL and search query at a glance
• max_turns support exposed over ACP via set_config_option

Changed

• Compaction now re-injects prior user messages so the agent retains the original task goals across context resets
• [Breaking — experimental hooks] post_agent_turn retries no longer use exit code 2; hooks must now exit 0 and return {"decision": "deny", "reason": "..."} on stdout to trigger a retry — exit code 2 is treated as a failure
• Model refusal stop reason is now surfaced to the user instead of stopping silently

Fixed

• CLI UI no longer goes blank during app switches
• User messages are preserved correctly across repeated compactions
• Non-UTF-8 input is handled gracefully across all CLI surfaces
• --resume now shows history when launched from a dangerous directory
• Startup no longer crashes in unowned folders or when a git ancestor is unreadable
• Plain-string answers from web_search are handled without crashing
• NaN SGR mouse reports no longer leak into the chat input