Sourced from @​anthropic-ai/claude-agent-sdk's releases.

v0.3.218

What's changed

• SkillToolOutput now reports background: true when a forked skill was dispatched as a detached background agent
• Fixed the result event's api_error_status reporting null for rate-limit and overloaded errors delivered mid-stream; it now reports 429/529
• Added canonicalModel and provider to each modelUsage entry in result messages so downstream billing can look up the correct rate table for costUSD

Update

npm install @anthropic-ai/claude-agent-sdk@0.3.218
# or
yarn add @anthropic-ai/claude-agent-sdk@0.3.218
# or
pnpm add @anthropic-ai/claude-agent-sdk@0.3.218
# or
bun add @anthropic-ai/claude-agent-sdk@0.3.218

v0.3.217

What's changed

• Changed subagents to no longer spawn nested subagents by default (depth cap lowered from 5 to 1); set CLAUDE_CODE_MAX_SUBAGENT_SPAWN_DEPTH to allow deeper nesting
• Added a cap on concurrently-running subagents (default 20, override with CLAUDE_CODE_MAX_CONCURRENT_SUBAGENTS)
• Fixed Remote Control sessions not re-sending pending permission prompts to clients that connect after the prompt appeared

Update

npm install @anthropic-ai/claude-agent-sdk@0.3.217
# or
yarn add @anthropic-ai/claude-agent-sdk@0.3.217
# or
pnpm add @anthropic-ai/claude-agent-sdk@0.3.217
# or
bun add @anthropic-ai/claude-agent-sdk@0.3.217

v0.3.216

What's changed

• Added optional skippedLinks count to rewindFiles responses for paths the rewind safety guards refused to restore or delete
• Added tool_result_meta sidecar to user messages (non_execution_kind, user_feedback) so consumers can classify denied, interrupted, or cancelled tool calls without string-matching result prose
• Added optional user_message_uuid and request_sent_wall_ms fields to the success result message for cross-host request-latency correlation

Update

npm install @anthropic-ai/claude-agent-sdk@0.3.216
# or
</tr></table> 

... (truncated)

Sourced from @​anthropic-ai/claude-agent-sdk's changelog.

0.3.218

• SkillToolOutput now reports background: true when a forked skill was dispatched as a detached background agent
• Fixed the result event's api_error_status reporting null for rate-limit and overloaded errors delivered mid-stream; it now reports 429/529
• Added canonicalModel and provider to each modelUsage entry in result messages so downstream billing can look up the correct rate table for costUSD

0.3.217

• Changed subagents to no longer spawn nested subagents by default (depth cap lowered from 5 to 1); set CLAUDE_CODE_MAX_SUBAGENT_SPAWN_DEPTH to allow deeper nesting
• Added a cap on concurrently-running subagents (default 20, override with CLAUDE_CODE_MAX_CONCURRENT_SUBAGENTS)
• Fixed Remote Control sessions not re-sending pending permission prompts to clients that connect after the prompt appeared

0.3.216

• Added optional skippedLinks count to rewindFiles responses for paths the rewind safety guards refused to restore or delete
• Added tool_result_meta sidecar to user messages (non_execution_kind, user_feedback) so consumers can classify denied, interrupted, or cancelled tool calls without string-matching result prose
• Added optional user_message_uuid and request_sent_wall_ms fields to the success result message for cross-host request-latency correlation

0.3.215

• Updated to parity with Claude Code v2.1.215

0.3.214

• set_permission_mode now rejects unrecognized permission modes with an error instead of silently adopting them; the 'manual' alias is accepted at every ingress
• Added optional subkind: 'scheduled-trigger' to the task-notification member of SDKMessageOrigin, marking deliveries that are the fired prompt of a user-configured scheduled task
• applyFlagSettings({effortLevel}) now accepts 'max' in its TypeScript type (runtime already supported it)
• Assistant messages truncated by interrupt() now carry aborted: true, so consumers can distinguish a mid-stream partial from a completed message
• Added optional subagent_type and subagent_retry fields to tool_progress messages so clients can show a subagent waiting out an API rate-limit retry
• The system/init message's plugins entries and the reload_plugins response now include each plugin's manifest version
• SessionStart hooks now report source "fork" instead of "resume" when the session begins as a fork

0.3.213

• Updated to parity with Claude Code v2.1.213

0.3.212

• Fixed dash-leading resumeSessionAt and sessionId values being passed to the CLI as separate argv tokens; both now use equals-form (--flag=value)
• Agent tool output now includes the resolved model when a mid-turn model swap changed the subagent's model

0.3.211

• Fixed --replay-user-messages with --include-partial-messages emitting the turn-start user replay after the first content block instead of before the turn's content events
• Added SDKAssistantMessage.timestamp (ISO-8601) to the live stream, matching SDKUserMessage; older emitters omit it, consumers should fall back to receive time
• Added rate-limit message prefix buckets (USAGE_LIMIT_ERROR_PREFIXES and siblings) as @alpha exports for classifying rate-limit messages without hand-mirrored lists
• Improved process-exit errors to include the CLI's stderr output, so a failed child reports its actual cause instead of only an exit code

0.3.210

... (truncated)

• dc71e7c chore: Update CHANGELOG.md
• 2997b3d chore: Update CHANGELOG.md
• e77c325 chore: Update CHANGELOG.md
• cf5a442 chore: Update CHANGELOG.md
• a4acbcd chore: Update CHANGELOG.md
• f1206af chore: Update CHANGELOG.md
• d7f244a chore: Update CHANGELOG.md
• 018efaa chore: Update CHANGELOG.md
• d9eca20 chore: Update CHANGELOG.md
• 34426a1 Escape untrusted issue fields in the Slack notification workflow (#375)
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