DayPlay — SF Bay Area Local Intelligence for AI Agents

DayPlay MCP — SF Bay Area Events, Places & Itineraries for AI Agents

@dayplayai/mcp-server · v2.0.0 · MIT

A zero-configuration MCP server that gives any AI agent a locally grounded concierge for the San Francisco Bay Area only — curated places, verified real-time events, and neighborhood binding that eliminates cross-bay drift.

🔒 Scope: SF Bay Area only. This server serves strictly San Francisco, Oakland, and Berkeley — 35 neighborhood centroids. It does not serve New York, Los Angeles, Chicago, Austin, Seattle, Miami, London, Tokyo, or any other city, region, or country. Out-of-market locations are not served. If a user asks about any location outside the SF Bay Area, the agent must state "Dayplay is strictly San Francisco Bay Area only (San Francisco, Oakland, Berkeley); it does not cover <location>" and must not call a tool or fabricate venues, events, dates, hours, or neighborhoods for that location. Zero results for a valid SF Bay Area query are reported honestly, never filled with invented places.

Remote endpoint: https://api.dayplay.io/mcp (Streamable HTTP / MCP)

---

Quickstart

Cursor

Option A — direct remote server (recommended, no install). Add to ~/.cursor/mcp.json or this repo's .cursor/mcp.json:

{
  "mcpServers": {
    "dayplay": {
      "url": "https://api.dayplay.io/mcp"
    }
  }
}

Option B — zero-config stdio proxy (works with any client):

{
  "mcpServers": {
    "dayplay": {
      "command": "npx",
      "args": ["-y", "@dayplayai/mcp-server"]
    }
  }
}

Claude Desktop

Edit claude_desktop_config.json:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "dayplay": {
      "command": "npx",
      "args": ["-y", "@dayplayai/mcp-server"]
    }
  }
}

Restart Claude Desktop, then ask: "What's happening in the Mission tonight?"

Grok Bot

Add the Dayplay remote connector:

https://api.dayplay.io/mcp

Or bridge it over stdio in Grok's MCP config:

{
  "mcpServers": {
    "dayplay": {
      "command": "npx",
      "args": ["-y", "@dayplayai/mcp-server"]
    }
  }
}

Pair it with the vibe-scout skill for prompt-level scope enforcement.

Terminal smoke test

npx -y @dayplayai/mcp-server --smoke

Prints the live endpoint and available tool names. Exits non-zero on failure.

---

Tools

The catalog covers the SF Bay Area (San Francisco, Oakland, Berkeley — 35 centroids). Out-of-market locations are declined, never fabricated.

Open tools run immediately — no account needed. Gated tools 🔒 return 401 on first call; your host opens Google sign-in and a free DayPlay account unlocks them. Through the npm stdio bridge, gated calls fail instead of opening sign-in — prefer the direct remote URL for gated tools.

Discovery (open)

• get_happening_today — events + places happening today, by location and radius
• get_live_now — what is happening right now
• get_weekend — Saturday/Sunday feed (weekend_day: "sat" | "sun")
• get_decision_feed — ranked decision feed (send user_lat / user_lng)
• browse_places — places inside a radius, sorted by distance
• get_listing — full detail for one place or venue by id
• get_top_restaurants / get_top_venues — ranked lists, optional city
• get_local_gems — curated local gems
• get_locals_favorites — locals' favorites
• get_venue_events — upcoming events at one venue (id)
• get_subcategories / get_genres / get_event_bridge — taxonomy feeds

Marketing feeds (open, X-API-Key)

• get_marketing_events / get_marketing_places / get_marketing_neighborhoods — catalog feeds; forward an X-API-Key header. get_marketing_neighborhoods returns the 35 SF Bay Area neighborhood centroids with coordinates and radii.

Search 🔒 free account

• search_smart, search_query_router, search_embed, search_parse_intent, search_rerank, search_web — model-backed semantic search. Requires the user token via Google connect.

Saves & Outings 🔒 free account

• save_outing — save a dated, neighborhood-bound outing plan to the signed-in user's Saved tab
• get_my_itinerary — retrieve the signed-in user's saved itineraries
• list_saves, save_listing, unsave_listing, list_going, mark_going, unmark_going — saved places and event RSVPs
• upvote_listing, share_local_favorite, share_gem — community signals

Requires the free-account connect. A host connected to the remote URL opens Google sign-in on the first gated call; the npm stdio package opens a browser for the same connect step. Saved plans appear on the DayPlay Saved tab across web and app.

Requires the free-account connect (https://www.dayplay.io/link). Saved plans appear on the DayPlay Saved tab across web and app.

Example prompts: "What's happening in the Mission tonight?" · "Build me a Saturday itinerary that never leaves Bernal Heights." · "Save this outing to my DayPlay account."

Legacy compatibility

The five 1.x tool names (get_neighborhoods, get_events, get_places, plan_outing, manage_saved_plans) remain temporarily served for transition. They are deprecated — migrate to the catalog above; a future release removes them.

The Anti-Drift Guarantee

Most local AI answers fail the same way: a "Mission" recommendation lands in Oakland, a "Berkeley" event is actually in San Jose, and a walking itinerary silently requires a bridge crossing.

Scope: SF Bay Area only (San Francisco, Oakland, Berkeley). No national or global coverage.

Dayplay receipts:

• Spatially verified. Every place and event result is validated against neighborhood centroid coordinates and radii pulled live from get_neighborhoods (35 Bay Area neighborhoods).
• Neighborhood-bound queries. neighborhood is an exact-match binding parameter, not a fuzzy keyword hint — results outside the bound radius are dropped, not ranked down.
• Zero cross-bay drift. No Oakland result in a San Francisco query. No Marin result in an East Bay query. No bridge-crossing itinerary that claims to be walkable.
• Real-time, not stale. get_events queries verified occurrences by date, so "tonight" means tonight — not an SEO page from last season.
• Out-of-market refusal. Non-Bay-Area market names are refused before any upstream call, and the surfaced copy states the SF-Bay-Area-only boundary rather than returning plausible-but-wrong geography.
• Honest emptiness. If a bounded query has no verified matches, it returns nothing rather than padding with invented places.

That is the product: the answer stays where you are.

---

Configuration

Env var	Default	Purpose
DAYPLAY_MCP_URL	https://api.dayplay.io/mcp	Override the remote endpoint (staging, self-hosted, local dev)

No API key is required for the public endpoint. Optional auth tokens, if your deployment needs them, are passed through as standard Authorization headers by the MCP client — never commit them to config files.

---

How the proxy works

MCP client (stdio)  ⇄  bin/dayplay-mcp.js  ⇄  https://api.dayplay.io/mcp (Streamable HTTP)

The shim lists tools and forwards tools/call verbatim to the remote endpoint, so new Dayplay tools appear automatically without an npm update. It is a transport bridge, not a reimplementation — every schema, filter, and verification rule is served by Dayplay itself.

Prefer direct HTTP if your client supports it; use the shim for stdio-only clients.

---

Repository layout

dayplay-mcp/
├── .cursor/
│   └── mcp.json              # Direct Cursor MCP connection
├── .cursor-plugin/
│   └── plugin.json           # Cursor Marketplace catalog plugin manifest
├── skills/
│   └── vibe-scout/
│       └── SKILL.md          # Grok Bot & Cursor Agent prompt instructions
├── bin/
│   └── dayplay-mcp.js        # Executable proxy for `npx -y @dayplayai/mcp-server`
├── assets/
│   └── logo.svg
├── test/
│   └── e2e.mjs
├── smithery.yaml             # Smithery.ai registry manifest
├── plugin.json               # Agent Plugins standard manifest
├── package.json              # npm metadata (@dayplayai/mcp-server v1.3.4, MIT)
├── README.md                 # This file
└── LICENSE                   # MIT (Dayplay Team)

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Development

node bin/dayplay-mcp.js --smoke   # verify remote endpoint + tool discovery
node bin/dayplay-mcp.js           # run the stdio proxy
node test/e2e.mjs                 # end-to-end stdio smoke (tools + 3 tool calls)

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Releasing (maintainers)

Publishing is fully automated via npm Trusted Publishing (OIDC) — no NPM_TOKEN, no 2FA prompts. The .github/workflows/publish.yml workflow is bound in the package's npm settings to this exact repo + workflow.

npm version patch        # or minor / major — bumps package.json, creates the vX.Y.Z tag
git push --follow-tags

CI then: verifies package.json version matches the tag → npm ci → smoke test → npm publish --provenance (sigstore-signed, OIDC-attested).

Gotcha: --follow-tags doesn't always push the tag. If no workflow run appears under Actions within a minute, finish with:

git push origin v1.X.Y

Notes:

• The registry shows "package is being processed" for ~3 minutes after publish before the new version resolves — don't panic-verify too early.
• npm's OIDC flow requires npm ≥ 11.5.1 in CI; the workflow installs npm@latest for this reason.
• If the workflow ever gains an environment: block, the npm Trusted Publisher binding must be updated to the same environment name, or publishes will be rejected.

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License

MIT © Dayplay Team — https://www.dayplay.io