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Capacities

COLLAB
Velocity5.0

Object-based note-taking and personal knowledge management app

capacities.io ↗

Capacities ships API 2.0, pivoting from self-contained PKM toward a connected AI memory layer

personal-knowledge-managementai-integrationdeveloper-apiproductivitypkmai-agents
◆Current state
Capacities is a structured personal knowledge management tool shipping at monthly cadence. In the past 4 months it has added AI Chat Connectors (connecting the space to ChatGPT, Claude, and Cursor), a developer-facing API 2.0, weblink reader and analysis, PDF annotations, AI image generation, and configurable AI model providers. The combination describes a product moving from self-contained PKM to a node in a broader AI-augmented knowledge graph.
◆Where it's heading
The consistent direction is making Capacities connectable — first via AI chat integrations, then a proper developer API, and now deeper object types and AI media generation. The new Pro+/Believer+ pricing add-ons indicate AI usage is growing enough to require metered capacity. The platform is accumulating capability surface faster than a traditional note-taking tool and faster than comparable PKM competitors.
◆Prediction
The most likely next move is deeper API-to-AI-connector integration, letting third-party agents create and modify Capacities objects programmatically — the existing connector work is the precondition for functioning as an AI memory layer rather than just a note store.

◆Recent moves

  1. 12d ago

    Recent continuous improvements

  2. 15d ago

    PDF reader view and annotations for Believers, Version History, more calendars, and AI image generation

    Release 70 bundles four distinct additions: PDF reader and annotation for Believer subscribers, a version history system, CalDAV calendar support, and AI image generation. Each is a meaningful capability expansion, with PDF annotations filling a long-requested gap and CalDAV extending Capacities into scheduling workflows.

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  3. 1mo ago

    Capacities Pro+ and Believer+

    Pro+ and Believer+ add-ons give users a larger monthly AI budget with top-up capability, directly monetizing the AI usage growth driven by chat connectors and image analysis features. The add-on structure lets the team scale AI costs without raising base tier prices — a sustainable model for usage-intensive AI features.

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  4. 1mo ago

    Recent continuous improvements — polish and reliability

    A polish-focused batch across dates, tabs, presentation mode, graph view, and ~30 specific fixes. No new capabilities; focused on reliability and interaction quality across existing features.

  5. 2mo ago

    Capacities API 2.0, Weblink Analysis, and Presentation Mode

    ⚡ SPARK

    API 2.0 opens Capacities to developer integration for the first time at a meaningful level, alongside weblink analysis (AI-powered reader view) and a new presentation mode. The developer API is the most directional move Capacities has shipped — it converts a walled-garden PKM into a platform third parties can build on.

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  6. 2mo ago

    AI Chat Connectors 2.0 + Many improvements

    AI Chat Connectors 2.0 lets connected AI apps (ChatGPT, Claude, Cursor) create pages, tasks, and arbitrary object types inside a Capacities space — not just read from it. The write capability closes the loop on AI-to-PKM integration and is the direct precursor to the API 2.0 work in release 67.

    View source ↗