Versioning

The LookC MCP server follows the Model Context Protocol versioning specification to ensure compatibility and smooth upgrades across different client implementations.

MCP Protocol Versioning

The Model Context Protocol uses a date-based versioning scheme following the MCP specification to ensure clear compatibility expectations and smooth protocol evolution.

Date-Based Versions

Protocol versions use YYYY-MM-DD format, making it clear when features were introduced.

Backward Compatibility

Newer protocol versions maintain compatibility with older clients where possible.

Current Protocol Support

The LookC MCP server supports the following MCP protocol versions:

Name
2024-11-05
Type
string
Description
Current Recommended Version: Latest stable protocol with full feature support
Name
2024-10-07
Type
string
Description
Supported: Previous stable version with core functionality
Name
2024-09-24
Type
string
Description
Legacy Support: Older version with limited feature set

Version Format

MCP protocol versions follow this format:

YYYY-MM-DD

Where:

YYYY: Four-digit year
MM: Two-digit month (01-12)
DD: Two-digit day (01-31)

Version Negotiation

The LookC MCP server implements automatic version negotiation to ensure optimal compatibility with connecting clients.

Negotiation Process

Version negotiation flow

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "initialize",
  "params": {
    "protocolVersion": "2024-11-05",
    "capabilities": {
      "tools": {},
      "logging": {}
    },
    "clientInfo": {
      "name": "Claude Desktop",
      "version": "1.0.0"
    }
  }
}

LookC Server Versions

The LookC MCP server maintains its own versioning scheme separate from the MCP protocol version, following semantic versioning principles.

Current Server Version

Current Version: v1.0.0 - Initial stable release with full tool support

Version History

Name
v1.0.0
Type
version
Description
Release Date: 2024-12-01 Features: Initial stable release with all three tools (get_employee_list, get_employee_list_by_linkedin, get_organization_ids) MCP Protocol: 2024-11-05
Name
v0.9.0
Type
version
Description
Release Date: 2024-11-15 Features: Beta release with core functionality MCP Protocol: 2024-10-07
Name
v0.8.0
Type
version
Description
Release Date: 2024-11-01 Features: Alpha release for testing MCP Protocol: 2024-09-24

Compatibility Matrix

Understanding compatibility between different client versions, MCP protocol versions, and LookC server versions.

Client Compatibility

Claude Desktop

Supports MCP 2024-11-05 and earlier. Full compatibility with LookC v1.0.0.

CrewAI

HTTP transport compatible. Works with all LookC server versions via REST API.

Custom Clients

Any HTTP client supporting JSON-RPC 2.0 can integrate with streamable HTTP transport.

Best Practices

Version Pinning

Pin to specific protocol versions in production to ensure consistent behavior.

Testing Upgrades

Always test new protocol versions in development before upgrading production systems.

Staying Updated

To stay informed about LookC MCP server updates:

Monitor Release Notes: Check the LookC documentation for server updates
Protocol Updates: Follow MCP specification changes
Community Channels: Join the LookC developer community for early access to new features

For questions about version compatibility or upgrade planning, contact your LookC account manager.