EventContext MCP - Live Venue and Event Data Server for Claude and Cursor

AI assistants are great at planning events but completely blind to real-time venue availability, local event calendars, and capacity constraints. EventContext is an MCP server that gives Claude live access to venue details, local event data, and scheduling conflicts so it can plan actual bookable events instead of hallucinated ones.

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Difficulty

intermediate

What is it?

Event planners and community managers using Claude for event planning constantly hit the wall where Claude suggests a venue with no idea if it exists, is available, or fits the budget. EventContext is a Model Context Protocol server that exposes three tools to Claude and Cursor: get_venue_details for fetching capacity, amenities, and pricing from a curated venue database, check_local_events for pulling conflicting local events from Eventbrite and Meetup APIs on a given date, and estimate_attendance for scoring expected turnout based on event type and location. The MCP host targets Claude Desktop and Cursor. Buildable with the MCP SDK, Eventbrite API, and a Supabase venue database seeded with 500 major cities.

Why now?

The MCP ecosystem exploded in early 2026 with Claude Desktop hitting 5M users and Anthropic opening the MCP marketplace — the window to be first in a niche vertical is right now before the category gets crowded.

▸get_venue_details tool returning capacity, amenities, and price range from Supabase venue database.
▸check_local_events tool pulling Eventbrite and Meetup events in a city on a target date.
▸estimate_attendance tool scoring expected turnout by event type, city, and season.
▸MCP resource exposing venue search as a browsable Claude resource panel.

Target Audience

Event planners, community managers, and developer advocates who use Claude Desktop or Cursor for event planning, estimated 50k active users.

Example Use Case

A developer advocate asks Claude to plan a 200-person conference in Austin in June, and Claude uses EventContext to pull three available venues with real capacity data, flag two competing conferences that weekend, and return a ranked shortlist with pricing estimates.

User Stories

▸As an event planner using Claude, I want real venue capacity data in my AI conversation, so that I stop getting hallucinated venue suggestions.
▸As a community manager, I want Claude to flag competing local events on my target date, so that I avoid scheduling conflicts.
▸As a developer advocate, I want attendance estimates by event type, so that I can size the venue correctly from the start.

Acceptance Criteria

get_venue_details: done when Claude returns real venue data for any of 20 seeded cities with capacity, amenities, and price range. check_local_events: done when Eventbrite API returns events within 25 miles of a city on a target date in under 2 seconds. estimate_attendance: done when tool returns a numeric range with a confidence label for any event type and city size combination. MCP Registration: done when all three tools appear in Claude Desktop tool panel after npx install.

Is it worth building?

$15 one-time install x 500 buyers = $7,500 in month 2. $9/month API key tier for high-volume planners at 100 users = $900 MRR.

Unit Economics

CAC: $0 via Anthropic Discord organic. LTV: $108 (12 months at $9/month). Payback: 1 month. Gross margin: 90%.

Business Model

One-time purchase + API key subscription

Monetization Path

Free tier: 50 venue lookups/month. Paid API key at $9/month unlocks real-time Eventbrite conflict checking and unlimited queries.

Revenue Timeline

First dollar: week 2 via Gumroad one-time purchase. $1k revenue: month 1. $1k MRR: month 4.

Estimated Monthly Cost

Eventbrite API: $0 free tier, Supabase: $25, Vercel for auth API: $20, Stripe fees: $10. Total: $55/month at launch.

Profit Potential

Side income at $1k MRR. Not full-time alone but strong as part of an MCP server bundle.

Scalability

Medium — expand to venue booking API integrations and catering cost estimators.

Success Metrics

Week 2: 20 installs. Month 1: 100 installs. Month 2: 500 installs, 100 paid API keys.

Launch & Validation Plan

Post in Anthropic Discord and MCP community Slack, offer free installs to first 50 event planning Claude users.

Customer Acquisition Strategy

First customer: post in Anthropic Discord MCP channel with a 60-second demo video of Claude planning a real event using live venue data. Ongoing: MCP marketplace listing, r/ClaudeAI, developer advocate communities on LinkedIn.

What's the competition?

Competition Level

Low

What's the roadmap?

Feature Roadmap

V1 (launch): get_venue_details, check_local_events, estimate_attendance, 20 cities. V2 (month 2-3): 100 cities, Cursor integration, venue review scores. V3 (month 4+): Catering cost estimator tool, hotel block lookup.

Milestone Plan

Phase 1 (Week 1-2): All three MCP tools working in Claude Desktop locally with Supabase venue seed. Phase 2 (Week 3-4): npm publish, Gumroad listing, paid API key tier with Stripe. Phase 3 (Month 2): 500 installs, 100 paid API keys, Anthropic Discord traction.

How do you build it?

Tech Stack

TypeScript MCP SDK, Eventbrite API, Meetup API, Supabase, Zod for schema validation — build with Cursor for MCP server logic.

Suggested Frameworks

Anthropic MCP SDK, Zod, Supabase JS

Time to Ship

2 weeks

Required Skills

TypeScript, MCP SDK, REST API integration, Supabase.

Resources

Anthropic MCP SDK docs, Eventbrite API docs, Meetup API docs, Supabase quickstart.

MVP Scope

src/index.ts, src/tools/getVenue.ts, src/tools/checkEvents.ts, src/tools/estimateAttendance.ts, src/resources/venueSearch.ts, supabase/venues.sql, package.json.

Core User Journey

Install MCP server in Claude Desktop -> ask Claude to plan an event -> Claude calls get_venue_details and check_local_events -> receives structured real data -> outputs bookable event plan.

Architecture Pattern

Claude sends tool call -> MCP server receives via stdio -> tool handler queries Supabase or calls Eventbrite API -> structured response returned to Claude -> Claude generates event plan with real data.

Data Model

Venue has many CapacityTiers. City has many Venues. EventQuery has one DateRange and one CityCode. ConflictCheck returns array of EventSummary.

Integration Points

Eventbrite API for local event data, Meetup API for community events, Supabase for venue database, Stripe for API key billing.

V1 Scope Boundaries

V1 excludes: live booking, catering APIs, hotel room blocks, multi-city event tours, team sharing.

Success Definition

An event planner installs the MCP server, asks Claude to plan a 150-person meetup, and receives a shortlist of real venues with conflict-free dates without any founder help.

Challenges

Distribution through Claude Desktop plugin discovery is still nascent — MCP marketplace is not yet mainstream, so early adopters are the only buyers right now.

Avoid These Pitfalls

Do not try to integrate live venue booking in v1 — availability APIs require business partnerships. MCP marketplace discovery is still early; finding first 10 buyers requires posting in Anthropic Discord yourself. Do not over-engineer the venue database — seed 20 major cities first, not all 500.

Security Requirements

API key auth for paid tier stored as hashed value in Supabase, rate limit 100 tool calls/hour per key, validate city and date inputs with Zod schemas.

Infrastructure Plan

MCP server runs locally via stdio on user machine, Supabase for venue database, Vercel for API key validation endpoint, GitHub Actions for npm publish CI.

Performance Targets

Tool response under 1 second for Supabase queries, Eventbrite API under 2 seconds, no page load target as it is a CLI MCP server.

Go-Live Checklist

☐Security audit complete
☐All three tools tested in Claude Desktop
☐Sentry for API key service live
☐Custom domain for API key portal
☐Privacy policy published
☐5 beta event planners signed off
☐Rollback plan for npm package documented
☐Anthropic Discord launch post drafted
☐Gumroad listing live.

How to build it, step by step

1. Run npm init with TypeScript and install Anthropic MCP SDK. 2. Scaffold three tool handlers in src/tools/ following MCP tool schema. 3. Seed Supabase venues table with 500 venues across 20 major cities from public venue directories. 4. Implement get_venue_details querying Supabase by city and capacity range. 5. Implement check_local_events calling Eventbrite Search API for a city and date. 6. Implement estimate_attendance using a lookup table of event type and city size. 7. Register all tools in src/index.ts with Zod input schemas. 8. Test locally in Claude Desktop via stdio transport. 9. Publish to npm and list on Gumroad with a demo video. 10. Post in Anthropic Discord and r/ClaudeAI with install instructions.

Generated

April 12, 2026

Model

claude-sonnet-4-6

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