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Connect Runs on your machine
claude mcp add viator-mcp -e VIATOR_API_KEY=<VIATOR_API_KEY> -e VIATOR_API_BASE_URL=<VIATOR_API_BASE_URL> -e VIATOR_LANGUAGE=<VIATOR_LANGUAGE> -e VIATOR_CACHE_TTL=<VIATOR_CACHE_TTL> -e VIATOR_STATIC_CACHE_TTL=<VIATOR_STATIC_CACHE_TTL> -- npx -y @chrischall/[email protected]{
"mcpServers": {
"viator-mcp": {
"command": "npx",
"args": [
"-y",
"@chrischall/[email protected]"
],
"env": {
"VIATOR_API_KEY": "<VIATOR_API_KEY>",
"VIATOR_API_BASE_URL": "<VIATOR_API_BASE_URL>",
"VIATOR_LANGUAGE": "<VIATOR_LANGUAGE>",
"VIATOR_CACHE_TTL": "<VIATOR_CACHE_TTL>",
"VIATOR_STATIC_CACHE_TTL": "<VIATOR_STATIC_CACHE_TTL>"
}
}
}
}{
"mcpServers": {
"viator-mcp": {
"command": "npx",
"args": [
"-y",
"@chrischall/[email protected]"
],
"env": {
"VIATOR_API_KEY": "<VIATOR_API_KEY>",
"VIATOR_API_BASE_URL": "<VIATOR_API_BASE_URL>",
"VIATOR_LANGUAGE": "<VIATOR_LANGUAGE>",
"VIATOR_CACHE_TTL": "<VIATOR_CACHE_TTL>",
"VIATOR_STATIC_CACHE_TTL": "<VIATOR_STATIC_CACHE_TTL>"
}
}
}
}{
"servers": {
"viator-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@chrischall/[email protected]"
],
"env": {
"VIATOR_API_KEY": "<VIATOR_API_KEY>",
"VIATOR_API_BASE_URL": "<VIATOR_API_BASE_URL>",
"VIATOR_LANGUAGE": "<VIATOR_LANGUAGE>",
"VIATOR_CACHE_TTL": "<VIATOR_CACHE_TTL>",
"VIATOR_STATIC_CACHE_TTL": "<VIATOR_STATIC_CACHE_TTL>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
VIATOR_API_KEYRequired, secret | Viator Partner API key (exp-api-key) — free Basic Access affiliate signup at partnerresources.viator.com |
VIATOR_API_BASE_URLOptional | API host (default production; set https://api.sandbox.viator.com/partner for a sandbox key) |
VIATOR_LANGUAGEOptional | Accept-Language for response text, e.g. en-US, es, fr, de, ja (default en-US) |
VIATOR_CACHE_TTLOptional | Seconds to cache identical read responses (default 60; 0 disables) |
VIATOR_STATIC_CACHE_TTLOptional | Seconds to cache reference data — destinations, tags, locations, rates (default 3600; 0 disables) |
Details
| Package | @chrischall/[email protected] (NPM, stdio) |
| First published | 4 Nov 2026 |
| Last updated | 4 Nov 2026 |
| Registry name | io.github.chrischall/viator-mcp |
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