Bring Newsletter
to LlamaIndex
Create your Vinkius account to connect Substack to LlamaIndex and start using all 6 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 Substack MCP Server?
Connect Substack to your AI agent and manage your newsletter publication conversationally.
What you can do
- Post Management — List, create, and manage newsletter posts including drafts, published, and scheduled content.
- Subscriber Insights — Query subscriber counts, growth trends, and audience demographics.
- Publication Settings — Access and modify publication metadata, categories, and custom domains.
- Content Analytics — Track open rates, click rates, and engagement metrics per post.
How it works
- Subscribe to the Substack integration on the marketplace.
- Get your API token from your Substack publication settings (Settings → Publication API).
- Ask your AI agent to draft posts, check analytics, or manage subscribers.
Who is this for?
- Newsletter Creators — Draft and schedule posts without switching context to the Substack editor.
- Content Marketers — Track newsletter performance and audience growth from a conversational interface.
- Thought Leaders — Manage multiple Substack publications efficiently from your AI workflow.
Built-in capabilities (6)
Get leaderboard
Get post
Get post stats
Get publication info
List recent posts
List subscribers
Why LlamaIndex?
LlamaIndex agents combine Substack tool responses with indexed documents for comprehensive, grounded answers. Connect 6 tools through Vinkius and query live data alongside vector stores and SQL databases in a single turn. ideal for hybrid search, data enrichment, and analytical workflows.
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Data-first architecture: LlamaIndex agents combine Substack tool responses with indexed documents for comprehensive, grounded answers
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Query pipeline framework lets you chain Substack tool calls with transformations, filters, and re-rankers in a typed pipeline
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Multi-source reasoning: agents can query Substack, a vector store, and a SQL database in a single turn and synthesize results
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Observability integrations show exactly what Substack tools were called, what data was returned, and how it influenced the final answer
Substack in LlamaIndex
Why run Substack with Vinkius?
The Substack 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 6 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 Substack using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Substack and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Substack to LlamaIndex 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
Substack for LlamaIndex
Every request between LlamaIndex and Substack 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
How do I get my Substack API token?
Log in to your Substack publication at yourdomain.substack.com. Navigate to Settings from the left sidebar. Look for the Publication API or Developer section. Generate an API token and copy it. Paste it into the configuration field below. Note: Substack's API is currently in limited availability — check Substack's developer page for the latest access information.
Can I draft and schedule newsletter posts?
Yes. Your AI agent can create draft posts with title, body content, subtitle, and metadata. You can then schedule them for a specific date and time — managing your entire editorial calendar conversationally.
Can I track how many subscribers I gained this month?
Yes. Ask your AI agent for subscriber growth metrics and get total subscribers, new subscribers this month, churn rate, and free vs. paid subscriber breakdown.
Does this work with paid Substack publications?
Yes. The integration supports both free and paid publications. You can manage paywalled content, check paid subscriber counts, and analyze revenue metrics through your AI agent.
How does LlamaIndex connect to MCP servers?
Use the MCP client adapter to create a connection. LlamaIndex discovers all tools and wraps them as query engine tools compatible with any LlamaIndex agent.
Can I combine MCP tools with vector stores?
Yes. LlamaIndex agents can query Substack tools and vector store indexes in the same turn, combining real-time and embedded data for grounded responses.
Does LlamaIndex support async MCP calls?
Yes. LlamaIndex's async agent framework supports concurrent MCP tool calls for high-throughput data processing pipelines.
BasicMCPClient not found
Install: pip install llama-index-tools-mcp
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