What is io.github.chrischall/viator-mcp?

Search Viator tours and activities — products, availability, attractions, destinations.

How do I install io.github.chrischall/viator-mcp?

Clone io.github.chrischall/viator-mcp from https://github.com/chrischall/viator-mcp and configure it as an MCP server in your client (Claude Desktop, Cursor, or VS Code).

What category does io.github.chrischall/viator-mcp belong to?

io.github.chrischall/viator-mcp is listed under Developer Tools MCP servers on MCPFind.

io.github.chrischall/viator-mcp — MCP Server for Developer Tools

viator-mcp

MCP server for the Viator Partner API (v2) — search tours, activities and experiences for Claude. Search the catalog with structured filters or free text, get product details and availability schedules, browse attractions and destinations, all over stdio.

Developed and maintained by AI (Claude Code). Use at your own discretion.

Quick start

{
  "mcpServers": {
    "viator": {
      "command": "npx",
      "args": ["-y", "@chrischall/viator-mcp"],
      "env": { "VIATOR_API_KEY": "your-viator-partner-api-key" }
    }
  }
}

Get a key by signing up as a Viator affiliate at partnerresources.viator.com — the Basic Access tier is free. This server targets that tier: read-only search/content/availability; no booking endpoints (product results carry a productUrl for booking on viator.com, tagged with your affiliate id).

Tools

Area	Tools
Products	`vt_search_products`, `vt_get_product`, `vt_list_product_tags`
Search	`vt_search_freetext`
Attractions	`vt_search_attractions`, `vt_get_attraction`
Availability	`vt_get_availability_schedule`
Reference	`vt_list_destinations`, `vt_get_locations`, `vt_get_exchange_rates`
Health	`vt_healthcheck` — is this connector working? Reports whether VIATOR_API_KEY resolved, whether Viator accepted it, and what to fix. Start here when another tool fails: an empty result can mean "no products" or "never authenticated".

All tools are read-only. vt_search_products and vt_search_freetext accept compact: true for slim summaries (code, title, price, rating, booking URL) instead of full records.

Environment

Variable	Required	Description
`VIATOR_API_KEY`	yes	Viator Partner API key (sent as `exp-api-key`)
`VIATOR_API_BASE_URL`	no	API host (default production; set `https://api.sandbox.viator.com/partner` for a sandbox key)
`VIATOR_LANGUAGE`	no	`Accept-Language` for response text (default `en-US`)
`VIATOR_CACHE_TTL`	no	Seconds to cache identical reads (default `60`; `0` disables)
`VIATOR_STATIC_CACHE_TTL`	no	Seconds to cache reference data — destinations, tags, locations, exchange rates (default `3600`)

Viator rate-limits per endpoint on a rolling 10-second window and answers 429/503 with Retry-After; the client honors it (one retry) and the response cache absorbs repeated identical calls.

Development

npm install
npm test          # vitest; no real network calls
npm run build     # tsc + esbuild bundle

The API surface this server is coded against is pinned in docs/VIATOR-API.md.

License

MIT

Set up in your AI client

AI clientOperating system

Merge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.

json

{
  "mcpServers": {
    "io-github-chrischall-viator-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@chrischall/viator-mcp"
      ]
    }
  }
}

Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.

Claude Desktop setup reference

Compatible MCP Clients

io.github.chrischall/viator-mcp works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.

Claude Desktop~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.

Cursor~/.cursor/mcp.jsonRestart Cursor for changes to take effect.

VS Code.vscode/mcp.jsonReload VS Code window for changes to take effect.

Windsurf~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect.

Claude Code.mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.

io.github.chrischall/viator-mcp