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This release delivers significant Claude 5.x support improvements, RAG sharing optimizations, security hardening for the REST API, and history load performance gains.

What's New

  • Adds syntax highlighting for scripts in common shell wrappers, including Python, Node/JavaScript, Ruby, Perl, and shell heredocs in the TUI
  • Adds an explicit Claude 5.x model table covering nine models, replacing name-based guesses for request policy on Anthropic Direct, Vertex, and Bedrock
  • Adds warnings and refusals when Claude 5.x cannot honor thinking_budget none, and rejects final assistant prefill for Claude 5.x
  • Refuses server-side fallback involving Claude 5.x and refuses Claude Mythos 5 on Bedrock (unsupported configurations)
  • Adds versioned, attributed provider raw state (ProviderState gains Version and Model fields) with explicit policy for unreplayable thinking blocks
  • Adds helpers for raw-state replay policy and seals provider state after generated media

Improvements

  • Deduplicates history entries in linear time on load, replacing a quadratic scan-and-splice approach
  • Redacts loaded history messages concurrently across available CPU workers, reducing sequential redaction overhead
  • Shares a single RAG index, file watcher, and embedding concurrency cap across all agents referencing the same RAG definition, eliminating redundant re-indexing
  • Accumulates Bedrock native block text in a strings.Builder instead of copying immutable strings on every delta, fixing quadratic behavior on Bedrock streams

Bug Fixes

  • Fixes OAuth token endpoint auth method: registration now requests client_secret_post unless the server only offers basic or none, and token exchange follows the registered method
  • Fixes OAuth default: omitted token_endpoint_auth_methods_supported and token_endpoint_auth_method now default to client_secret_basic
  • Locks down the REST session API against CSRF and DNS rebinding: rejects cross-origin requests on all methods, validates Host headers on unauthenticated TCP listeners, and requires tokens on non-loopback listeners
  • Fixes Anthropic Haiku 5.x: omits sampling parameters (e.g. temperature) that the model rejects
  • Fixes RAG: skips re-embedding files already indexed by another store, and does not attribute shared background indexing to a session
  • Fixes Bedrock: captures, persists, and replays native Claude reasoning blocks in order; never replays unsigned reasoning blocks
  • Fixes Anthropic: preserves thinking blocks from another provider's raw state
  • Fixes structured output on Claude 5.x: fails correctly without a prefill retry
  • Fixes provider factory: keeps VertexAI out of the factory's dependencies; scopes the Claude 5.x thinking warning to Model Garden and zero budgets
  • Fixes images in tool results: restores typed image attachments after tool replies, handles the explicit-cache path, and preserves following user text on message merge
  • Fixes theme watcher races: ThemeWatcher now uses a blocking, context-owned Run method instead of an internally managed goroutine
  • Fixes transcription: preserves transcripts and errors through dictation finalization; Capturer.Run and Transcriber.Run are now context-owned per run
  • Replaces models removed from the models.dev snapshot

Technical Changes

  • Refreshes the embedded models.dev catalog snapshot (+661 added, -71 removed, ~381 modified)
  • Updates Go to 1.27.3, picking up security fixes

What's Changed

New Contributors

Full Changelog: https://github.com/docker/docker-agent/compare/v1.151.0...v1.152.0

Source: README.md, updated 2026-10-21