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npm · #3768 most downloaded on npm
SDK for building AI agents with Claude Code's capabilities. Programmatically interact with Claude to build autonomous agents that can understand codebases, edit files, and execute workflows.
Last release today
23 Sep 2026
Ships on a steady schedule
a new release about every 8 days
Nearly every release is documented
notes for 60 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
12 months old
305 releases · first in 2025
Nothing published for this version
Nothing published for this version
Nothing published for this version
Merged prompt options: The customSystemPrompt and appendSystemPrompt fields have been merged into a single systemPrompt field for simpler configuratio
customSystemPrompt and appendSystemPrompt fields have been merged into a single systemPrompt field for simpler configurationsettings.json, CLAUDE.md), slash commands, and subagents are no longer loaded automatically. This ensures SDK applications have predictable behavior independent of local filesystem configurationssettingSources field to specify which settings locations to load: ["user", "project", "local"]agents option, enabling dynamic agent creation without filesystem dependencies. Learn moreforkSession option to branch conversations and explore different approaches from the same starting point. Learn moresettingSources option gives you fine-grained control over which filesystem settings to load, improving isolation for CI/CD, testing, and production deploymentsOne column per month.
Nothing published for this version
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