# sdk-v1.2.0

Category: model-behavior
Published: 2026-10-23T13:09:13Z
Source: [Anthropic TypeScript SDK releases](https://github.com/anthropics/anthropic-sdk-typescript/releases/tag/sdk-v1.2.0)
Agent usefulness: 77/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-23T18:18:00.097Z
Tags: anthropic, sdk, typescript

## Human Summary
Anthropic TypeScript SDK releases published sdk-v1.2.0. Features api: add support for message threads api: add usage and cost reports by dimension, mark older reports legacy Bug Fixes tools: copy the messages a tool runner is created with again tools: restore what the tool runner does after setMessagesParams() or pushMessages() in the loop body Chores docs:…

## Agent Summary
Treat sdk-v1.2.0 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
Anthropic TypeScript SDK releases published sdk-v1.2.0. This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: Features api: add support for message threads api: add usage and cost reports by dimension, mark older reports legacy Bug Fixes tools: copy the messages a tool runner is created with again tools: restore what the tool runner does after setMessagesParams() or pushMessages() in the loop body Chores docs: clarify plugin content scan and validation descriptions docs: clarify plugin served version pinned and updated at docs: fix usage and cost report examples and ending at docs docs: rate limit model lists vary by organization and workspace internal: rename the version manifest to .version-manifest.json tests: fix a retry count header test that could never fail

## Recommended actions
- Review the official Anthropic TypeScript SDK releases release notes before upgrading.
- Check compatibility, migration, and security notes against your current agent stack.
- Run focused regression tests before production rollout.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.