Compatible with every major AI agent and IDE
What is the Massive MCP Server?
Connect to Massive to retrieve comprehensive historical dividend data for thousands of tickers. Empower your AI agent to perform deep financial analysis and equity research through natural conversation.
What you can do
- Historical Dividends — Fetch full records of cash distributions for any supported stock ticker from the Massive API.
- Granular Filtering — Filter results by ex-dividend date, frequency (annual, quarterly), or specific distribution types.
- Distribution Types — Identify recurring, special, supplemental, or irregular dividends to understand company payout patterns.
- Data Analysis — Sort and limit results (up to 5000 records) to build precise financial models or investment reports.
How it works
- Subscribe to this server
- Enter your Massive API Key
- Start querying financial data from Claude, Cursor, or any MCP-compatible client
Who is this for?
- Financial Analysts — quickly retrieve payout histories to calculate yields and dividend growth rates.
- Investors — check upcoming or historical ex-dividend dates to manage portfolio timing.
- Developers — integrate reliable financial distribution data into trading bots or research tools without complex scraping.
Built-in capabilities (1)
Retrieve historical cash dividends for a ticker
Why OpenAI Agents SDK?
The OpenAI Agents SDK auto-discovers all 1 tools from Massive through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries Massive, 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
Massive in OpenAI Agents SDK
Massive and 4,000+ other MCP servers. One platform. One governance layer.
Teams that connect Massive to OpenAI Agents SDK through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 4,000+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for Massive in OpenAI Agents SDK
The Massive MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 1 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in OpenAI Agents SDK only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
How Vinkius secures
Massive for OpenAI Agents SDK
Every tool call from OpenAI Agents SDK to the Massive MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
Can I filter dividends by a specific date?
Yes. You can use the ex_dividend_date parameter in the list_dividends tool to find distributions occurring on or after a specific YYYY-MM-DD date.
What types of dividend distributions can I identify?
The list_dividends tool supports filtering by distribution_type, including 'recurring', 'special', 'supplemental', 'irregular', and 'unknown'.
How many dividend records can I retrieve at once?
By default, the list_dividends tool returns 100 results, but you can increase the limit parameter up to a maximum of 5000 records per query.
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.
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