Rank #2 of 6 in Notes & Knowledge Bases
vs Obsidian
vs Logseq
vs Anytype
vs Reflect
vs PolyShowcase
Try itExperimental
See what an agent can do with Capacities before you ever sign up. Pick a story: recorded sessions replay real probe-harness transcripts; sandboxed self-drive sessions are designed and gated (docs/TRY-IT.md).
$curl -si -X POST https://api.capacities.io/mcp -H 'Content-Type: application/json' -d '<jsonrpc initialize>'recorded session — replayed, not liveVerified integrations
Connections to other tracked products — hover a chip for the verbatim evidence quote behind it.
By theme — the product's score on each story themeBy theme
Agenticness — how well agents can access and operate the productAgenticnessevidence →
How well agents can access and operate the product
Ai in notes — stories about ai in notes in this arenaAi in notesevidence →
Stories about ai in notes in this arena
Automation depth — how much of the product can run unattendedAutomation depthevidence →
How much of the product can run unattended
Capture editing — stories about capture editing in this arenaCapture editingevidence →
Stories about capture editing in this arena
Import export — stories about import export in this arenaImport exportevidence →
Stories about import export in this arena
Linking graph — stories about linking graph in this arenaLinking graphevidence →
Stories about linking graph in this arena
Local first ownership — stories about local first ownership in this arenaLocal first ownershipevidence →
Stories about local first ownership in this arena
Mobile capture — stories about mobile capture in this arenaMobile captureevidence →
Stories about mobile capture in this arena
Openness — open source, data portability, and self-hosting storiesOpennessevidence →
Open source, data portability, and self-hosting stories
Organization retrieval — stories about organization retrieval in this arenaOrganization retrievalevidence →
Stories about organization retrieval in this arena
Plugins extensibility — stories about plugins extensibility in this arenaPlugins extensibilityevidence →
Stories about plugins extensibility in this arena
Privacy posture — data-handling and privacy storiesPrivacy postureevidence →
Data-handling and privacy stories
Publish sharing — stories about publish sharing in this arenaPublish sharingevidence →
Stories about publish sharing in this arena
Sync collaboration — stories about sync collaboration in this arenaSync collaborationevidence →
Stories about sync collaboration in this arena
Story verdicts — every judged story with its evidenceStory verdicts
Follow the green: where the map greys out is where Capacities stops today. ✓ full · ~ partial · ! disputed · — none · n/a not applicable.
Agenticness — how well agents can access and operate the productAgenticness
How well agents can access and operate the product
API surface
Drive the product through a documented public API
✓9/10
unlocks → Webhooks · Versioning policy · API sandbox · Official CLI · Browse and install from a large catalog of community plugins/extensions to add features the core app doesn't ship
Subscribe to events via webhooks
—–
Build against official SDKs
~7/10
Issue scoped/least-privilege API credentials for an agent
~5/10
unlocks → Autonomous automations
Connect an agent via an official MCP server
✓8/10
Download a machine-readable API spec (OpenAPI or equivalent)
✓8/10
unlocks → Interactive API docs
Rely on versioned APIs with a documented deprecation policy
—0/10
Test against a sandbox environment without touching production data
—0/10
Explore an interactive API reference with runnable examples
—0/10
Docs for agents
Point an agent at llms.txt or agent-oriented docs
✓8/10
Agentic features
Delegate tasks to a built-in AI assistant inside the product
~5/10
unlocks → MCP client
Operate the product with natural-language commands
~5/10
unlocks → Autonomous automations
Plug MCP servers into this product so it can use their tools
—0/10
Get AI-generated insights and suggestions from my data inside the product
~6/10
Set up automations that run autonomously in the background
—0/10
Ai in notes — stories about ai in notes in this arenaAi in notes
Stories about ai in notes in this arena
Automation depth — how much of the product can run unattendedAutomation depth
How much of the product can run unattended
Capture editing — stories about capture editing in this arenaCapture editing
Stories about capture editing in this arena
Import export — stories about import export in this arenaImport export
Stories about import export in this arena
Linking graph — stories about linking graph in this arenaLinking graph
Stories about linking graph in this arena
Local first ownership — stories about local first ownership in this arenaLocal first ownership
Stories about local first ownership in this arena
Mobile capture — stories about mobile capture in this arenaMobile capture
Stories about mobile capture in this arena
Openness — open source, data portability, and self-hosting storiesOpenness
Open source, data portability, and self-hosting stories
Organization retrieval — stories about organization retrieval in this arenaOrganization retrieval
Stories about organization retrieval in this arena
Attach typed properties and tags to notes and use them consistently for organization and retrieval
✓8/10
Query my notes by their structured properties and render live database-style views (tables, boards, lists) from those queries
~4/10
Instantly search all my notes with full-text search plus filters on tags, properties, and paths — including offline
~6/10
Plugins extensibility — stories about plugins extensibility in this arenaPlugins extensibility
Stories about plugins extensibility in this arena
Privacy posture — data-handling and privacy storiesPrivacy posture
Data-handling and privacy stories
Publish sharing — stories about publish sharing in this arenaPublish sharing
Stories about publish sharing in this arena
Sync collaboration — stories about sync collaboration in this arenaSync collaboration
Stories about sync collaboration in this arena
Sorted by importance (agentic first) (high → low) · 55/55 stories · click a row’s chevron for the rationale and evidence
Drive the product through a documented public API G Agent access | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 3 | full | 9/10 | Tprobed⚿ | |
Connect an agent via an official MCP server G Agent access | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 3 | full | 8/10 | Tprobed⚿ | |
Delegate tasks to a built-in AI assistant inside the product G Agentic features | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 3 | partial | 5/10 | Cclaimed | |
Plug MCP servers into this product so it can use their tools G Agent access | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 3 | none | 0/10 | ⚿ | |
Download a machine-readable API spec (OpenAPI or equivalent) G Api quality | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | full | 8/10 | Tprobed⚿ | |
Point an agent at llms.txt or agent-oriented docs G Agent access | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | full | 8/10 | Tprobed | |
Build against official SDKs G Agent access | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | partial | 7/10 | Tprobed⚿ | |
Get AI-generated insights and suggestions from my data inside the product G Agentic features | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | partial | 6/10 | Cclaimed | |
Issue scoped/least-privilege API credentials for an agent G Agent access | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | partial | 5/10 | Tprobed⚿ | |
Operate the product with natural-language commands G Agentic features | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | partial | 5/10 | Tprobed⚿ | |
Run the product headlessly / in CI for automation G Agent access | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | partial | 3/10 | Tprobed⚿ | |
Explore an interactive API reference with runnable examples G Api quality | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | none | 0/10 | ⚿ | |
Rely on versioned APIs with a documented deprecation policy G Api quality | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | none | 0/10 | ⚿ | |
Set up automations that run autonomously in the background G Agentic features | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | none | 0/10 | ⚿ | |
Subscribe to events via webhooks G Agent access | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | none | untested | none yet | |
Use an official CLI G Agent access | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 2 | none | untested | none yet | |
Test against a sandbox environment without touching production data G Api quality | ai-native user | Agenticness — how well agents can access and operate the productAgenticness | 1 | none | 0/10 | ⚿ | |
Export all of my data in open formats and leave G | ai-native user | Openness — open source, data portability, and self-hosting storiesOpenness | 3 | full | 8/10 | Cclaimed | |
My coding agent or assistant can read AND write my notes headlessly — through a documented local API, vendor API, or MCP server — without me touching the GUI C Agent ops | ai-native user | Ai in notes — stories about ai in notes in this arenaAi in notes | 3 | full | 8/10 | Tprobed⚿ | |
Prevent my data from being used to train AI models G | ai-native user | Privacy posture — data-handling and privacy storiesPrivacy posture | 3 | full | 8/10 | Cclaimed | |
I get an automatic daily note for each day, pre-filled from a template, as the default landing place for journaling and capture C Daily notes | power-user | Capture editing — stories about capture editing in this arenaCapture editing | 3 | partial | 6/10 | Cclaimed | |
Instantly search all my notes with full-text search plus filters on tags, properties, and paths — including offline C Search | researcher | Organization retrieval — stories about organization retrieval in this arenaOrganization retrieval | 3 | partial | 6/10 | Cclaimed | |
Link notes with [[wiki-style]] links and see every backlink and unlinked mention of a note in context C Links | researcher | Linking graph — stories about linking graph in this arenaLinking graph | 3 | partial | 5/10 | Cclaimed | |
My notes live in local files or a local-first store that I own and can read without the app, and everything keeps working fully offline C Ownership | power-user | Local first ownership — stories about local first ownership in this arenaLocal first ownership | 3 | partial | 5/10 | Cclaimed | |
Import my existing notes from Notion, Evernote, Roam, or plain Markdown with structure, links, and attachments preserved C Migration | switcher | Import export — stories about import export in this arenaImport export | 3 | partial | 4/10 | Cclaimed | |
Query my notes by their structured properties and render live database-style views (tables, boards, lists) from those queries C Queries | power-user | Organization retrieval — stories about organization retrieval in this arenaOrganization retrieval | 3 | partial | 4/10 | Cclaimed | |
An official sync service keeps my notes updated across all my devices with end-to-end encryption the vendor can't read C Sync | power-user | Sync collaboration — stories about sync collaboration in this arenaSync collaboration | 3 | none | 0/10 | ||
Browse and install from a large catalog of community plugins/extensions to add features the core app doesn't ship C Plugins | power-user | Plugins extensibility — stories about plugins extensibility in this arenaPlugins extensibility | 3 | none | untested | none yet | |
Define rules that trigger actions automatically on events G | ai-native user | Automation depth — how much of the product can run unattendedAutomation depth | 3 | none | untested | none yet | |
Self-host the core product G | ai-native user | Openness — open source, data portability, and self-hosting storiesOpenness | 3 | none | untested | none yet | |
Connect external LLMs and AI tools to my notes through first-party connectors or an ecosystem of AI plugins C Ai assist | ai-native user | Ai in notes — stories about ai in notes in this arenaAi in notes | 2 | full | 9/10 | Tprobed⚿ | |
Attach typed properties and tags to notes and use them consistently for organization and retrieval C Metadata | power-user | Organization retrieval — stories about organization retrieval in this arenaOrganization retrieval | 2 | full | 8/10 | Xcommunity | |
Reference or transclude an individual block or section of one note inside another and have it stay in sync C Links | power-user | Linking graph — stories about linking graph in this arenaLinking graph | 2 | full | 8/10 | Cclaimed | |
A built-in AI assistant can answer questions, summarize, and draft grounded in my own notes — with clear controls over what data it sees C Ai assist | ai-native user | Ai in notes — stories about ai in notes in this arenaAi in notes | 2 | partial | 7/10 | Cclaimed | |
Export my entire knowledge base at any time in open formats, so leaving is as easy as arriving C Migration | switcher | Import export — stories about import export in this arenaImport export | 2 | full | 7/10 | Cclaimed | |
My notes are stored or exportable in open, documented formats (Markdown, JSON) so my archive outlives the vendor C Ownership | researcher | Local first ownership — stories about local first ownership in this arenaLocal first ownership | 2 | full | 7/10 | Cclaimed | |
Define reusable templates (with variables like date and title) and apply them when creating recurring kinds of notes C Editor | power-user | Capture editing — stories about capture editing in this arenaCapture editing | 2 | partial | 6/10 | Cclaimed | |
Drive the app from outside — create or open notes via a URI scheme, deep links, or a local endpoint — to wire it into my scripts and workflows C Automation hooks | developer | Plugins extensibility — stories about plugins extensibility in this arenaPlugins extensibility | 2 | partial | 6/10 | Tprobed⚿ | |
Build my own plugins against a documented extension API/SDK with samples and developer docs C Plugins | developer | Plugins extensibility — stories about plugins extensibility in this arenaPlugins extensibility | 2 | partial | 5/10 | Tprobed⚿ | |
Do everything through the API that I can do in the UI G | ai-native user | Openness — open source, data portability, and self-hosting storiesOpenness | 2 | partial | 5/10 | Tprobed⚿ | |
Opt out of telemetry and usage tracking G | ai-native user | Privacy posture — data-handling and privacy storiesPrivacy posture | 2 | partial | 4/10 | Cclaimed | |
Share a vault or space with collaborators and edit notes together without stepping on each other's changes C Collaboration | researcher | Sync collaboration — stories about sync collaboration in this arenaSync collaboration | 2 | partial | 3/10 | Cclaimed | |
Choose where my data is stored (region/residency) G | ai-native user | Privacy posture — data-handling and privacy storiesPrivacy posture | 2 | none | 0/10 | ||
Clip web pages, articles, and highlights from my browser straight into my notes with an official clipper or capture flow C Capture | researcher | Capture editing — stories about capture editing in this arenaCapture editing | 2 | none | 0/10 | ||
Control data retention and deletion G | ai-native user | Privacy posture — data-handling and privacy storiesPrivacy posture | 2 | none | 0/10 | ||
Full-featured iOS and Android apps give me my whole knowledge base — capture, search, and linking — not a stripped-down companion C Mobile | power-user | Mobile capture — stories about mobile capture in this arenaMobile capture | 2 | none | 0/10 | ||
Perform bulk operations across many items at once G | ai-native user | Automation depth — how much of the product can run unattendedAutomation depth | 2 | none | 0/10 | ⚿ | |
Publish selected notes as a browsable website — a digital garden with working links — without leaving the app C Publish | researcher | Publish sharing — stories about publish sharing in this arenaPublish sharing | 2 | none | 0/10 | ||
Run the whole system without the vendor's cloud — local-only mode or a self-hosted sync backend I operate myself C Self host | developer | Local first ownership — stories about local first ownership in this arenaLocal first ownership | 2 | none | 0/10 | ⚿ | |
Schedule recurring jobs or workflows G | ai-native user | Automation depth — how much of the product can run unattendedAutomation depth | 2 | none | 0/10 | ⚿ | |
Read the product's source under an open license G | ai-native user | Openness — open source, data portability, and self-hosting storiesOpenness | 2 | none | untested | none yet | |
View a note's version history and restore earlier versions or recover deleted notes C Sync | power-user | Sync collaboration — stories about sync collaboration in this arenaSync collaboration | 2 | none | untested | none yet | |
Write and format notes with headings, callouts, tables, code blocks, and embedded media in a fast keyboard-driven editor C Editor | power-user | Capture editing — stories about capture editing in this arenaCapture editing | 2 | none | untested | none yet | |
Explore my knowledge base as an interactive graph of notes and connections, filtered to what I care about C Graph | researcher | Linking graph — stories about linking graph in this arenaLinking graph | 1 | partial | 5/10 | Cclaimed | |
Version, review, and roll back my automations G | ai-native user | Automation depth — how much of the product can run unattendedAutomation depth | 1 | none | 0/10 | ⚿ |
Opportunities — the stories that would move this product's scores, from its own judged verdictsOpportunitiestop 8 of 43 stories with headroom
What would move Capacities’s scores — derived from its own judged verdicts, biggest headroom first. Each line quotes what the judge found missing; shipping it (or evidencing it publicly) is the fix.
Agenticness — how well agents can access and operate the productPlug MCP servers into this product so it can use their tools
nonemoves agent-readyimpact 45
Evidence consistently shows Capacities exposes itself AS an MCP server (and its own chat-connector/API) so external AI clients (ChatGPT, Claude, custom agents) can connect TO Capacities — the reverse of this story, which asks whether Capacities can consume external MCP servers to use their tools.
Automation depth — how much of the product can run unattendedDefine rules that trigger actions automatically on events
nonemoves PA Scoreimpact 30
Capacities offers an API, MCP server, and AI assistant features, but no evidence of a rules/trigger engine (event-based automation like 'when X happens, do Y') exists in the docs pack—only manual actions, scheduled exports, and AI-assisted fill-in features are documented.
Plugins extensibility — stories about plugins extensibility in this arenaBrowse and install from a large catalog of community plugins/extensions to add features the core app doesn't ship
nonemoves PA Scoreimpact 30
The axis applies to this product kind (peer products hold positive or none verdicts on this story), so lack of evidence for an applicable capability is "none", never "na".
Sync collaboration — stories about sync collaboration in this arenaAn official sync service keeps my notes updated across all my devices with end-to-end encryption the vendor can't read
nonemoves PA Scoreimpact 30
There is evidence of offline-first sync ('changes get synchronized as soon as you're back online') but no mention anywhere of end-to-end encryption of sync data or a vendor-can't-read architecture; encryption claims are absent from docs, pricing, or community sources.
Openness — open source, data portability, and self-hosting storiesSelf-host the core product
nonemoves PA Scoreimpact 30
The axis applies to this product kind (peer products hold positive or none verdicts on this story), so lack of evidence for an applicable capability is "none", never "na".
Agenticness — how well agents can access and operate the productSet up automations that run autonomously in the background
nonemoves Built-in AIimpact 30
Evidence shows only a scheduled full-export feature and API/MCP integration points for external clients, but nothing indicating autonomous, self-triggering background automations (e.g., workflows/triggers acting on data changes) running inside Capacities.
Agenticness — how well agents can access and operate the productUse an official CLI
nonemoves agent-readyimpact 30
The axis applies to this product kind (peer products hold positive or none verdicts on this story), so lack of evidence for an applicable capability is "none", never "na".
Agenticness — how well agents can access and operate the productSubscribe to events via webhooks
nonemoves agent-readyimpact 30
Evidence shows Capacities has a REST API and MCP server for pull-based access, but no documentation or probe indicates any webhook subscription mechanism for event notifications.
Showing the top 8 of 43 — every none/partial verdict in the story verdicts table is headroom.
Think a verdict is wrong? Every verdicts-table row has a Flag link — see the methodology.
Coverage map — which docs area, API section, or community source covers which judged storiesCoverage map7 surfaces · 32 covered stories
Where the cited evidence behind each covered verdict came from — the same citations the verdicts table shows, no extra judging.
Raw docs31 stories
- Point an agent at llms.txt or agent-oriented docs
- Run the product headlessly / in CI for automation
- Connect an agent via an official MCP server
- Drive the product through a documented public API
- Issue scoped/least-privilege API credentials for an agent
- Build against official SDKs
- Get AI-generated insights and suggestions from my data inside the product
- Delegate tasks to a built-in AI assistant inside the product
- Operate the product with natural-language commands
- Download a machine-readable API spec (OpenAPI or equivalent)
- My coding agent or assistant can read AND write my notes headlessly — through a documented local API, vendor API, or MCP server — without me touching the GUI
- Connect external LLMs and AI tools to my notes through first-party connectors or an ecosystem of AI plugins
- A built-in AI assistant can answer questions, summarize, and draft grounded in my own notes — with clear controls over what data it sees
- I get an automatic daily note for each day, pre-filled from a template, as the default landing place for journaling and capture
- Define reusable templates (with variables like date and title) and apply them when creating recurring kinds of notes
- Export my entire knowledge base at any time in open formats, so leaving is as easy as arriving
- Import my existing notes from Notion, Evernote, Roam, or plain Markdown with structure, links, and attachments preserved
- Explore my knowledge base as an interactive graph of notes and connections, filtered to what I care about
- Link notes with [[wiki-style]] links and see every backlink and unlinked mention of a note in context
- Reference or transclude an individual block or section of one note inside another and have it stay in sync
- My notes live in local files or a local-first store that I own and can read without the app, and everything keeps working fully offline
- My notes are stored or exportable in open, documented formats (Markdown, JSON) so my archive outlives the vendor
- Do everything through the API that I can do in the UI
- Export all of my data in open formats and leave
- Attach typed properties and tags to notes and use them consistently for organization and retrieval
- Query my notes by their structured properties and render live database-style views (tables, boards, lists) from those queries
- Instantly search all my notes with full-text search plus filters on tags, properties, and paths — including offline
- Drive the app from outside — create or open notes via a URI scheme, deep links, or a local endpoint — to wire it into my scripts and workflows
- Build my own plugins against a documented extension API/SDK with samples and developer docs
- Prevent my data from being used to train AI models
- Opt out of telemetry and usage tracking
OpenAPI spec11 stories
- Run the product headlessly / in CI for automation
- Connect an agent via an official MCP server
- Drive the product through a documented public API
- Issue scoped/least-privilege API credentials for an agent
- Build against official SDKs
- Download a machine-readable API spec (OpenAPI or equivalent)
- My coding agent or assistant can read AND write my notes headlessly — through a documented local API, vendor API, or MCP server — without me touching the GUI
- Connect external LLMs and AI tools to my notes through first-party connectors or an ecosystem of AI plugins
- Do everything through the API that I can do in the UI
- Drive the app from outside — create or open notes via a URI scheme, deep links, or a local endpoint — to wire it into my scripts and workflows
- Build my own plugins against a documented extension API/SDK with samples and developer docs
Developer docs10 stories
- Run the product headlessly / in CI for automation
- Connect an agent via an official MCP server
- Drive the product through a documented public API
- Issue scoped/least-privilege API credentials for an agent
- Build against official SDKs
- Operate the product with natural-language commands
- My coding agent or assistant can read AND write my notes headlessly — through a documented local API, vendor API, or MCP server — without me touching the GUI
- Connect external LLMs and AI tools to my notes through first-party connectors or an ecosystem of AI plugins
- Do everything through the API that I can do in the UI
- Build my own plugins against a documented extension API/SDK with samples and developer docs
Pricing docs2 stories
Probe proofs — replayable recordings from the probe harnessProbe proofs
Replayable recordings from our probe harness — see the Prove-It protocol to submit one.
$curl -si -X POST https://api.capacities.io/mcp -H 'Content-Type: application/json' -d '<jsonrpc initialize>'reproduced$ curl -si -X POST https://api.capacities.io/mcp -H 'Content-Type: application/json' -d '<jsonrpc initialize>'
HTTP/2 401
date: Sat, 05 Sep 2026 03:26:53 GMT
content-type: application/json; charset=utf-8
content-length: 145
cf-ray: a362228f8d0570f0-SJC
cf-cache-status: DYNAMIC
etag: W/"91-08SijRmRsQaH1sHuu9tJ89zoyF0"
server: cloudflare
strict-transport-security: max-age=31536000; includeSubDomains
vary: Origin, Accept-Encoding
www-authenticate: Bearer resource_metadata="https://api.capacities.io/.well-known/oauth-protected-resource/mcp", scope="mcp:read mcp:write"
access-control-allow-credentials: true
content-security-policy: default-src 'self';base-uri 'self';font-src 'self' https: data:;form-action 'self';frame-ancestors 'self';img-src 'self' data:;object-src 'none';script-src 'self';script-src-attr 'none';style-src 'self' https: 'unsafe-inline';upgrade-insecure-requests
cross-origin-opener-policy: same-origin
cross-origin-resource-policy: same-origin
origin-agent-cluster: ?1
ratelimit: "120-in-1min"; r=119; t=60
ratelimit-policy: "120-in-1min"; q=120; w=60; pk=:OTU2NmNmYjgzMjZl:
referrer-policy: no-referrer
x-content-type-options: nosniff
x-dns-prefetch-control: off
x-download-options: noopen
x-frame-options: SAMEORIGIN
x-permitted-cross-domain-policies: none
x-xss-protection: 0
report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=c6iEW%2B69kD%2FQP6MXeEntwsVqcooRUYoreXDcKs5Ux1N8Db1gHmOF%2F1JlnHnxOVeASVERuwRSOqIH1SQ8z2536wToZ0tpYuuQioTfEIt56JDQKLvxkRF7C2vNXX1xZBfI28jL"}]}
nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
{"jsonrpc":"2.0","id":1,"error":{"code":-32001,"message":"unauthorized: missing or invalid OAuth bearer [redacted]","data":{"error":"invalid_[redacted]"}}}
$curl -s https://api.capacities.io/openapi.json | head -c 200; curl -si https://api.capacities.io/spaces | head -6reproduced$ curl -s https://api.capacities.io/openapi.json | head -c 200; curl -si https://api.capacities.io/spaces | head -6
{"openapi":"3.1.0","info":{"title":"Capacities API (Beta)","version":"0.1.0","description":"The Capacities API allows you to interact with Capacities from external applications. You can read more abou
HTTP/2 401
date: Sat, 05 Sep 2026 03:26:53 GMT
content-type: application/json; charset=utf-8
content-length: 69
cf-ray: a362228e1abb7542-SJC
cf-cache-status: DYNAMIC
Claims vs evidence — vendor claims reconciled against independent verdictsClaims vs evidence
3 of 21 testable claims verified · 3 contradicted → integrity 0/100
26 distinct capability claims found in Capacities’s own claimed-docs/GitHub materials, reconciled against our judge’s independent verdicts.
3
Verified
15
Unverified
3
Contradicted
14
Undersold
Verified (3)
“Chat Connectors let AI chat apps like ChatGPT, Claude, Cursor, or Le Chat connect to a Capacities space”
Connect external LLMs and AI tools to my notes through first-party connectors or an ecosystem of AI pluginsfullproof ↗
“Users can create custom object types in addition to Capacities' automatically generated basic types”
Attach typed properties and tags to notes and use them consistently for organization and retrievalfullproof ↗
“A REST API lets users access, create, and manipulate their content”
Drive the product through a documented public APIfullproof ↗
Unverified (18)
“AI can auto-fill custom object properties using its own knowledge instead of manual entry”
Get AI-generated insights and suggestions from my data inside the productpartialproof ↗
“All backlinks to an object are grouped together in a dedicated Backlinks section”
Link notes with [[wiki-style]] links and see every backlink and unlinked mention of a note in contextpartialproof ↗
“Individual blocks inside an object can be linked/referenced from other pages (block references)”
Reference or transclude an individual block or section of one note inside another and have it stay in syncfullproof ↗
“Graph view visualizes how objects connect to each other, showing the local neighborhood of a note”
Explore my knowledge base as an interactive graph of notes and connections, filtered to what I care aboutpartialproof ↗
“A day's page shows all objects and mentions referencing that day”
I get an automatic daily note for each day, pre-filled from a template, as the default landing place for journaling and capturepartialproof ↗
“Every day automatically gets a daily note used for quick journaling and capture”
I get an automatic daily note for each day, pre-filled from a template, as the default landing place for journaling and capturepartialproof ↗
“Templates let users prefill properties and blocks when creating new objects”
Define reusable templates (with variables like date and title) and apply them when creating recurring kinds of notespartialproof ↗
“Search is designed to return useful results even with imprecise wording, and works offline”
Instantly search all my notes with full-text search plus filters on tags, properties, and paths — including offlinepartialproof ↗
“Users can schedule automatic recurring full exports of their space”
Export my entire knowledge base at any time in open formats, so leaving is as easy as arrivingfullproof ↗
“Capacities is offline-first; changes sync automatically once back online”
My notes live in local files or a local-first store that I own and can read without the app, and everything keeps working fully offlinepartialproof ↗
“Users can migrate content from Notion by curating structure before exporting”
Import my existing notes from Notion, Evernote, Roam, or plain Markdown with structure, links, and attachments preservedpartialproof ↗
“AI features are fully opt-in; no data is shared with third-party AI services unless activated”
Prevent my data from being used to train AI modelsfullproof ↗
“Users can start AI chats and pass specific blocks or notes as context”
A built-in AI assistant can answer questions, summarize, and draft grounded in my own notes — with clear controls over what data it seespartialproof ↗
“AI can analyze an image to extract title, description, OCR text, color palette, and category”
Get AI-generated insights and suggestions from my data inside the productpartialproof ↗
“Selected content can be exported as Markdown + CSV for migration purposes”
Export my entire knowledge base at any time in open formats, so leaving is as easy as arrivingfullproof ↗
“Product offers task management, an AI assistant, calendar integrations, smart queries, and task actions”
Query my notes by their structured properties and render live database-style views (tables, boards, lists) from those queriespartialproof ↗
“Users can grant others view-only access to their notes”
Share a vault or space with collaborators and edit notes together without stepping on each other's changespartialproof ↗
“Exported properties become front-matter and collections become CSV files, enabling reuse in other apps/programmatically”
My notes are stored or exportable in open, documented formats (Markdown, JSON) so my archive outlives the vendorfullproof ↗
Contradicted (3)
“Users can build a custom MCP client to integrate their own app/agent/bot with a Capacities space”
Plug MCP servers into this product so it can use their toolsnoneproof ↗
“Users can schedule automatic recurring full exports of their space”
“A mobile companion app supports search and capture on the go alongside desktop”
Full-featured iOS and Android apps give me my whole knowledge base — capture, search, and linking — not a stripped-down companionnoneproof ↗
Undersold (14)
Point an agent at llms.txt or agent-oriented docsfullproof ↗
Run the product headlessly / in CI for automationpartialproof ↗
Issue scoped/least-privilege API credentials for an agentpartialproof ↗
Delegate tasks to a built-in AI assistant inside the productpartialproof ↗
Operate the product with natural-language commandspartialproof ↗
Download a machine-readable API spec (OpenAPI or equivalent)fullproof ↗
My coding agent or assistant can read AND write my notes headlessly — through a documented local API, vendor API, or MCP server — without me touching the GUIfullproof ↗
Do everything through the API that I can do in the UIpartialproof ↗
Drive the app from outside — create or open notes via a URI scheme, deep links, or a local endpoint — to wire it into my scripts and workflowspartialproof ↗
Build my own plugins against a documented extension API/SDK with samples and developer docspartialproof ↗
Claims outside our story set (3)
Real capability claims found in Capacities’s own materials, but no story in this arena’s taxonomy covers them yet — that’s feedback on the taxonomy, not a mark against the product.
“The Capacities API uses Bearer token (OAuth 2.0) authentication”
source ↗“Any image imported becomes a reusable image object throughout the space”
source ↗“Spaces support unlimited objects and blocks with no storage caps”
source ↗
Business model
Generous free plan for personal use; Capacities Pro subscription unlocks AI features, the API, and power features, with a higher Believer tier that funds development.
pricing ↗Score trend
How this product’s scores have moved as evidence and verdicts are re-derived — a point per change, not per day.
Try Experimental
Run it in the microterminal →Recorded agent sessions — and a live MCP handshake where the vendor ships one.
Flag
⚑ Flag a verdictThink a verdict is wrong? Opens a prefilled GitHub issue — or use the ⚑ next to any verdict above.
For agents
Agent surface uptime MCP 100% · llms.txt 100% (30d, checked every 6h since Sep 8 '26)