No free plan. The cheapest way in is Basecamp Plus at $15/user/month. Consider free alternatives in the project management category if budget is tight.
Basecamp offers two main plans: Basecamp Plus at $15/user/month and Basecamp Pro Unlimited at $299/month flat for unlimited users, projects, and 5TB of storage. The CLI, Agent Skill, and SDK are included free with any paid Basecamp account — there is no separate fee for agent capabilities. However, you'll need to pay separately for whichever AI agent you connect (Claude, Codex, Cursor, etc.). For teams of 20+, the flat $299 Pro plan typically becomes more economical than per-seat alternatives in our directory.
The Basecamp CLI works with any AI agent that can execute shell commands, and 37signals explicitly calls out Claude, Codex, OpenCode, and Cursor as supported. The Agent Skill format is compatible with Claude Code's skill system, allowing the agent to install Basecamp capabilities on demand. Because the CLI is a standard command-line tool, any agent harness — including custom-built ones using the Anthropic SDK or OpenAI tools — can drive Basecamp workflows. This bring-your-own-agent approach is rare among the project management tools in our directory.
Per 37signals, agents can do anything a human user can: create and complete to-dos, write documents, post to message boards, send Campfire chat messages, manage schedules, work with cards on the kanban-style card table, and even respond to automatic check-in questions about what they worked on. This includes triggering and replying to recurring prompts like 'What did you work on today?' Effectively, the agent becomes a team member with its own activity in Basecamp rather than a separate assistant layer.
37signals describes the Agent Skill and CLI as a 'technology preview' — the foundation for a future where users bring their own agents to Basecamp. The CLI itself and the SDKs (in Go, Ruby, Python, TypeScript, Swift, and Kotlin) appear to be officially supported, but the broader agent-native vision is still evolving. Teams already comfortable with command-line agent workflows can use it today; less technical teams should expect more polished, UI-driven features over time.
Compared to the other project management tools in our directory, Basecamp takes a fundamentally different approach: rather than embedding a proprietary AI assistant (as Asana Intelligence, Monday AI, and ClickUp Brain do), Basecamp lets you connect any agent you already use. This is more flexible and avoids being locked into a vendor's specific AI roadmap, but it requires technical setup. If you want one-click summaries and AI-generated tasks inside a polished UI, ClickUp or Monday will feel more accessible; if you want your existing Claude or Codex workflow to drive PM tasks, Basecamp is the better fit.
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Last verified March 2026