anthropics/anthropic-sdk-go v1.73.0

on GitHub

1.73.0 (2026-09-15)

Full Changelog: v1.72.0...v1.73.0

Features

• api: add compaction parameter and signed compaction blocks (beta) (e8fde9a)
• api: add enum types for workspace data-residency geo fields (2a6278f)
• api: add thinking_mismatch_allowed entries to input_transformations (beta) (94f69a4)
• api: add url_sources to the web fetch tool (739316b)
• api: add workspace_id parameter to user profiles methods (2fe76c4)

Bug Fixes

• api: use one input transformation type for message and delta event (4ce03aa)
• tests: compare the input transformation reason as a string (e1c9fb6)

Chores

• docs: clarify that session_thread_id on tool use events is informational (4c1ee73)
• docs: correct the compaction beta's parameter descriptions (5716f68)
• internal: move the default HTTP client constructor into internal/requestconfig (ffb85e5)
• tests: stop the mock server without failing a passing test run (b03bf9d)

Documentation

• api: add descriptions to enum constants (2fc6555)
• api: clarify usage.iterations entry typing under server-side fallback (1661494)
• api: fix typo in temperature deprecation message (6295557)
• stop documenting unions with their first variant's description (e8d63c8)