MCP Server Couchbase

What the code does

We read the source, 2 d ago · rules 995398eba69f

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

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Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add mcp-server-couchbase -- uvx couchbase-mcp-server

{
  "mcpServers": {
    "mcp-server-couchbase": {
      "command": "uvx",
      "args": [
        "couchbase-mcp-server"
      ]
    }
  }
}

[mcp_servers.mcp-server-couchbase]
command = "uvx"
args = ["couchbase-mcp-server"]

{
  "mcpServers": {
    "mcp-server-couchbase": {
      "command": "uvx",
      "args": [
        "couchbase-mcp-server"
      ]
    }
  }
}

{
  "servers": {
    "mcp-server-couchbase": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "couchbase-mcp-server"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: CB_CONNECTION_STRING (Couchbase connection string. Required for connecting to the cluster), CB_USERNAME (Couchbase database username. Required for basic authentication), CB_PASSWORD (Couchbase database password. Required for basic authentication), CB_CA_CERT_PATH (Couchbase CA certificate path. Required for TLS authentication in non Capella clusters), CB_CLIENT_CERT_PATH (Couchbase client certificate path. Required for mTLS authentication), CB_CLIENT_KEY_PATH (Couchbase client key path. Required for mTLS authentication), CB_MCP_READ_ONLY_MODE (Couchbase read only mode. Set to true to allow disable write operations across both KV and query. KV write tools are not loaded and SQL++ queries that modify data are blocked. Set to false to allow data modification queries and tools), CB_MCP_TRANSPORT (Transport mode for the server (stdio, http or sse). Default is stdio), CB_MCP_HOST (Host to run the MCP server on (default: 127.0.0.1). Used only for HTTP and SSE transport modes), CB_MCP_PORT (Port to run the MCP server on (default: 8000). Used only for HTTP and SSE transport modes), CB_MCP_DISABLED_TOOLS (Tools to disable. Accepts comma-separated tool names (e.g., 'tool_1,tool_2') or a file path containing one tool name per line), CB_MCP_CONFIRMATION_REQUIRED_TOOLS (Comma-separated tool names that require user confirmation before execution. Also accepts a file path containing one tool name per line. Requires the MCP client to support elicitation), CB_MCP_LOG_LEVEL (Logging level for the MCP server. One of off, debug, info, warning, error. Use 'off' to disable logging entirely. Invalid values fall back to info. Default is info), CB_MCP_LOG_SINKS (Comma-separated list of log destinations. Allowed values: stderr, file. Include 'file' to write per-level log files; include 'stderr' to write to the console. Default is stderr), CB_MCP_LOG_FILE (Base path for the per-level log files. One rotating file is written per level (e.g. mcp_server.info.log, mcp_server.error.log). Only used when 'file' is in CB_MCP_LOG_SINKS. Default is mcp_server.log), CB_MCP_LOG_ROTATION_MAX_SIZE_MB (Global maximum size in MB per-level log file before it rotates, inherited by every level unless overridden by a per-level CB_MCP_LOG_<LEVEL>_ROTATION_MAX_SIZE_MB. A value of 0 is invalid and falls back to the default (1 MB) with a startup warning. Default is 1 (1 MB)), CB_MCP_LOG_MAX_BYTES ([DEPRECATED] Global rotation size in bytes; use CB_MCP_LOG_ROTATION_MAX_SIZE_MB (MB) instead. Still honored for backward compatibility but ignored when CB_MCP_LOG_ROTATION_MAX_SIZE_MB is also set. A value of 0 is invalid and falls back to the default with a startup warning), CB_MCP_LOG_ERROR_ROTATION_MAX_SIZE_MB (Rotation size in MB for the ERROR log file. Overrides CB_MCP_LOG_ROTATION_MAX_SIZE_MB for ERROR; inherits it when unset. 0 is invalid and falls back to the inherited global with a startup warning), CB_MCP_LOG_WARNING_ROTATION_MAX_SIZE_MB (Rotation size in MB for the WARNING log file. Overrides CB_MCP_LOG_ROTATION_MAX_SIZE_MB for WARNING; inherits it when unset. 0 is invalid and falls back to the inherited global with a startup warning), CB_MCP_LOG_INFO_ROTATION_MAX_SIZE_MB (Rotation size in MB for the INFO log file. Overrides CB_MCP_LOG_ROTATION_MAX_SIZE_MB for INFO; inherits it when unset. 0 is invalid and falls back to the inherited global with a startup warning), CB_MCP_LOG_DEBUG_ROTATION_MAX_SIZE_MB (Rotation size in MB for the DEBUG log file. Overrides CB_MCP_LOG_ROTATION_MAX_SIZE_MB for DEBUG; inherits it when unset. 0 is invalid and falls back to the inherited global with a startup warning), CB_MCP_LOG_RETENTION_BACKUP_COUNT (Number of rotated backup files kept per-level log file, excluding the live file. Applies to every level unless overridden per level. Set to 0 to keep only the live file (still capped by the rotation size). Default is 1), CB_MCP_LOG_ERROR_RETENTION_BACKUP_COUNT (Rotated backups kept for the ERROR log file. Overrides CB_MCP_LOG_RETENTION_BACKUP_COUNT for ERROR; inherits it when unset), CB_MCP_LOG_WARNING_RETENTION_BACKUP_COUNT (Rotated backups kept for the WARNING log file. Overrides CB_MCP_LOG_RETENTION_BACKUP_COUNT for WARNING; inherits it when unset), CB_MCP_LOG_INFO_RETENTION_BACKUP_COUNT (Rotated backups kept for the INFO log file. Overrides CB_MCP_LOG_RETENTION_BACKUP_COUNT for INFO; inherits it when unset), CB_MCP_LOG_DEBUG_RETENTION_BACKUP_COUNT (Rotated backups kept for the DEBUG log file. Overrides CB_MCP_LOG_RETENTION_BACKUP_COUNT for DEBUG; inherits it when unset), CB_MCP_OAUTH_JWT_JWKS_URI (JWKS endpoint of the identity provider used to verify bearer JWT signatures. Required to enable OAuth, along with CB_MCP_OAUTH_JWT_ISSUER and CB_MCP_OAUTH_JWT_AUDIENCE. Only honored when CB_MCP_TRANSPORT=http), CB_MCP_OAUTH_JWT_ISSUER (Expected JWT 'iss' claim value. Also advertised as the authorization server in Protected Resource Metadata when CB_MCP_OAUTH_MCP_BASE_URL is set. Required to enable OAuth), CB_MCP_OAUTH_JWT_AUDIENCE (Expected JWT 'aud' claim value. Required to enable OAuth), CB_MCP_OAUTH_JWT_ALGORITHM (JWT signing algorithm. One of RS256/384/512, ES256/384/512, PS256/384/512. Default is RS256), CB_MCP_OAUTH_MCP_BASE_URL (Public base URL of this MCP server. When set, the server publishes RFC 9728 Protected Resource Metadata at <base_url>/.well-known/oauth-protected-resource/mcp so PRM-aware clients can discover the authorization server. Optional), CB_MCP_OAUTH_SCOPE_READ_LABEL (Override the OAuth scope label the server treats as 'read' access; advertised in PRM and matched against the token's scope/scp claim. Use when your IdP cannot emit the canonical form. Default is couchbase-mcp:read), CB_MCP_OAUTH_SCOPE_WRITE_LABEL (Override the OAuth scope label the server treats as 'write' access; same semantics as CB_MCP_OAUTH_SCOPE_READ_LABEL. Default is couchbase-mcp:write).