Bring Knowledge Graph
to OpenAI Agents SDK
Create your Vinkius account to connect Capacities to OpenAI Agents SDK and start using all 10 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Capacities MCP Server?
Connect your Capacities account to any AI agent and take full control of your object-based personal knowledge management through natural conversation.
What you can do
- Spaces & Structures — Enumerate your personal spaces and discover the exact object type structures mapping your active environment.
- Object Instantiation — Build new typed graph objects complying precisely with the predefined structure parameters.
- Daily Note Appends — Send quick thoughts, summaries, and Markdown text directly into your mapped daily note log.
- Content Lookups — Execute rapid keyword searches targeting explicit object hierarchies to track down active nodes.
- Rich Link Saving — Parse and inject web URLs dynamically into your space as Weblink objects, triggering automatic previews.
- Media & Tagging — Attach images and add tags to existing objects to organize your graph relations instantly.
How it works
- Subscribe to this server
- Navigate to your Capacities app Settings to grab your Personal Token
- Start fetching and creating deep knowledge blocks dynamically from Claude or Cursor
Who is this for?
- Researchers & Writers — Instantly instruct your agent to capture weblinks or draft quick notes straight into today’s daily log without switching context.
- Developers — Allow AI coding assistants to document system architectures automatically by injecting structured Markdown objects.
- Knowledge Workers — Command the agent to search your Capacities workspace and extract specific object properties to brief you before a meeting.
Built-in capabilities (10)
Add a structural categorical Tag linking explicitly dynamically grouping related Graph items via relations
Create a new typed object in a Capacities space bounded by specific graph rules instantiating entities
Retrieve a specific full explicit object by ID accessing its root graph data traversing properties internally
Retrieve detailed information about a Capacities space including all object types (structures), their property definitions, and configuration
Get all object type definitions (structures) within a Capacities space exposing exact metadata parameters limitlessly
List all personal spaces in the Capacities account. Spaces are top-level containers for organizing objects, notes, and knowledge
Search for content across a specific Capacities space by title or explicit keywords tracking exact nodes
Locate and attach an explicit Media payload explicitly binding it directly onto existing specific record scopes
Append strict Markdown textual payloads to the dynamically mapped daily note explicitly linking content blocks
Save a web URL as a Weblink object dynamically tracking automatic preview generation natively
Why OpenAI Agents SDK?
The OpenAI Agents SDK auto-discovers all 10 tools from Capacities through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries Capacities, another analyzes results, and a third generates reports, all orchestrated through Vinkius.
- —
Native MCP integration via
MCPServerSse, pass the URL and the SDK auto-discovers all tools with full type safety - —
Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure
- —
Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate
- —
First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output
Capacities in OpenAI Agents SDK
Why run Capacities with Vinkius?
The Capacities connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 10 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.
* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.
Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Capacities using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Capacities and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Capacities to OpenAI Agents SDK through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Capacities for OpenAI Agents SDK
Every request between OpenAI Agents SDK and Capacities is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
Can my AI agent automatically funnel research links into my Capacities daily note?
Yes. It can append raw Markdown to your Daily Note dynamically, or use the dedicated WebLink endpoint to natively scrape and save beautifully previewed URLs into your specified space. This gives you a fast workflow for daily link-hoarding right from your chat tools.
Will the agent know the specific object structures configured in my custom Capacities space?
Absolutely. Before creating nodes, your agent pulls constraints using the get_structures capability. It reads the schemas, understands which properties are locked or required (e.g., Dates vs Checkboxes), and constructs the new object JSON mapping perfectly inside the space.
Is the agent capable of categorizing objects with new tags automatically?
Yes. Once an object is created or fetched via lookup, the AI can employ the tag modification tool to link categorical boundaries accurately. It's a frictionless way to organize hundreds of loosely coupled notes into connected knowledge topics without any manual toggles.
How does the OpenAI Agents SDK connect to MCP?
Use MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.
Can I use multiple MCP servers in one agent?
Yes. Pass a list of MCPServerSse instances to the agent constructor. The agent can use tools from all connected servers within a single run.
Does the SDK support streaming responses?
Yes. The SDK supports SSE and Streamable HTTP transports, both of which work natively with Vinkius.
MCPServerStreamableHttp not found
Ensure you have the latest version: pip install --upgrade openai-agents
Agent not calling tools
Make sure your prompt explicitly references the task the tools can help with.
Explore More MCP Servers
View all →
Brilliant Made
10 toolsManage your corporate swag via Brilliant Made — track orders, browse products, and monitor inventory directly from any AI agent.
Tettra
12 toolsSearch, read, and create internal wiki pages on your Tettra knowledge base directly from your AI agent.
Open-Meteo Geocoding & Elevation
3 toolsResolve any city, village, or address into GPS coordinates instantly: multilingual search, population data, timezones, and terrain elevation at 90m precision — the perfect companion for all weather tools.
Retell AI
11 toolsBuild human-like AI voice agents that handle phone calls, answer questions, and complete tasks through natural spoken conversation.