Capacities
Object-graph (people, books, projects as typed objects); daily notes; bidirectional links. AI chat grounded in current note; AI property auto-fill; in-editor writing assistant; pattern-finding across objects.
Active · Verified 2026-10-22 · fresh as of 2026-10-22 · 37 cited facts, 4 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Type
- Object-graph PKM (typed objects) vendor fix
- Tier
- T2
- Created
- 2022 (St. Wendel / Stuttgart Germany) third-party fix
- Latest release
- not applicable — not OSS fix
- License
- not applicable — not OSS fix
- GitHub
- not applicable — no GitHub repo fix
- Pricing
- Basic free; Pro $9.99/mo (16% off yearly); Believer from $12.49/mo; AI Plus add-on $8.33/mo (annual) vendor fix
- Funding
- Bootstrapped; no external VC funding; subscription-supported vendor fix
- Freshness
- 2026-10-22 fix
- Layer
- agent-infra repo fix
- Licensing
- commercial vendor fix
Memory taxonomy
- storage
- graph
- retrieval
- graph-traversal
- persistence
- long-term
- update
- overwrite
- unit
- document
- governance
- user-controllable
- conflict
- overwrite
When to use
Optimised for: personal-knowledge-management UX + AI-augmented note-taking
Anti-fit: not for enterprise / programmatic use; not for compliance-regulated workloads
Pros & cons
Pros
Object-database PKM model — typed entities (people, books, projects) make memory queries semantic by construction.
Cons
Niche product; smaller user base; AI features less developed than Notion.
Claims & capabilities
Free; Pro ~$7.99–9.99/mo; Believer $12.49/mo.
Technical surface
- API surface
- searched not found
- Backend storage
- searched not found
- Deployment
- Managed-only
- Embedding model
- searched not found
- Multi-tenancy
- searched not found
- MCP
- unclear — Pro/Believer list 'AI Chat Connectors' for ChatGPT, Claude and Cursor; MCP not named on pricing page
- A2A
- searched not found
- OpenTelemetry
- searched not found
Alternatives to Capacities → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other personal ai / pkm / lifelogging memory in the catalog, ranked by inbound references.
- Screenpipe T3
Local-first 24/7 screen and audio recorder that indexes what you see/hear and exposes it as context/memory to AI agents (MCP, API); open-source Rewind/Recall alternative. Y Combinator S26
- Amplenote T2
Tags + bidirectional links + task/calendar integration. "Task Score" priority matrix. AmpleAI plugin supports OpenAI, Anthropic, Gemini, Grok, DeepSeek, Ollama.
- Apple Notes + Apple Intelligence T1
Folder + tag hierarchy; iCloud sync. Writing Tools (proofread / rewrite / summarise) across all note content; audio transcription + AI summary; smart search; reminders from to-dos.
- CORE (RedPlanet) T3
Always-on 'personal AI OS' that indexes email, meetings, GitHub, Linear, Slack and assistant chats into a temporal knowledge graph with fact classification and intent-driven retrieval, plus MCP integrations. reports 88.24% on LoCoMo (vendor claim)
- Craft AI T1
Hierarchical block-based documents + nested pages (no native graph). In-document AI assistant: summarise, rewrite, translate, Q&A over docs, proofread.
- Heptabase T2
Visual whiteboard canvas + nested cards + bidirectional links + journal. AI chat with cited sources inside whiteboards; supports OpenAI / Gemini / Anthropic backends.
Sources (36 cited facts, 4 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Object-graph PKM (typed objects) vendor
- What it does & what's distinct Object-graph (people, books, projects as typed objects); daily notes; bidirectional link… vendor
- Claims / benefits Free; Pro ~$7.99–9.99/mo; Believer $12.49/mo. vendor
- Modalities text vendor
- Created 2022 (St. Wendel / Stuttgart Germany) third-party
- Mindshare 3 HN stories (HN Algolia search); small dev-tools / PKM job listings; ~8 small team SaaS third-party
- Funding Bootstrapped; no external VC funding; subscription-supported vendor
- Pricing Basic free; Pro $9.99/mo (16% off yearly); Believer from $12.49/mo; AI Plus add-on $8.33… vendor
- Compliance GDPR-compliant; data stored in EU; encrypted at rest (AES-256 equivalent) and in transit… vendor
- Deployment Managed-only vendor
- HQ DE (Stuttgart / St. Wendel Germany) third-party
- Founders / pedigree Michael von Hohnhorst and Steffen Bleher (100% owner-operated; bootstrapped indie team) third-party
- Memory volume / scale no scale claim vendor
- Tombstoning hard-delete supported vendor
- Schema evolution schema with migration vendor
- Namespace primitives per-tenant vendor
- Contradiction handling always overwrite (last-write-wins) vendor
- Forgetting policy user-controlled forget vendor
- MCP support unclear — Pro/Believer list 'AI Chat Connectors' for ChatGPT, Claude and Cursor; MCP not… vendor
- Validated verticals consumer / individual (knowledge workers, students, researchers) vendor
- Time to running <10min (hosted SaaS sign-up or app download) vendor
- Anti-fit not for enterprise / programmatic use; not for compliance-regulated workloads vendor
- Optimised for personal-knowledge-management UX + AI-augmented note-taking vendor
- Adjacent infrastructure self-contained app; some require iCloud / Google Drive vendor
- Pros Object-database PKM model — typed entities (people, books, projects) make memory queries… vendor
- Cons Niche product; smaller user base; AI features less developed than Notion. vendor
- Project & sources capacities.io vendor
- cost-input-usd-per-mtok 0 vendor
- cost-output-usd-per-mtok 0 vendor
- cost-tier free vendor
- cost-pricing-model free-tier vendor
- cost-last-verified 2026-06-29 vendor
- architecture-deployment-locus cloud vendor
- licensing-bucket commercial vendor
- positioning-platform-vs-product product vendor
- taxonomy-three-layer-rollup agent-infra repo
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
- 2026-10-22
- Pricing “Free tier + Pro ~€7.99–9.99/mo; Believer €12.49/mo (annual) — from product claims row” → “Basic free; Pro $9.99/mo (16% off yearly); Believer from $12.49/mo; AI Plus add-on $8.33/mo (annual)” source
- MCP support first recorded as “unclear — Pro/Believer list 'AI Chat Connectors' for ChatGPT, Claude and Cursor; MCP not named on pricing page” source