feat/slack-conversation-history-cursor

[matthewfreshit]

Description

Added the ability for slack MCP to use a cursor when retrieving slack conversation history

Server Details

• Server: Slack
• Changes to: slack_get_channel_history (tool)

Motivation and Context

Currently i am only able to get a max of 200 records when pressing claude. This would allow it to continue move backwards in the conversation history.

How Has This Been Tested?

Yes this has been tested with my teams slack. I created a test MCP app and confirmed the cursor does move forward.

Breaking Changes

No they should not have to update any configurations

Types of changes

• New feature (non-breaking change which adds functionality)
• Documentation update

Checklist

• I have read the MCP Protocol Documentation
• My changes follows MCP security best practices
• I have updated the server's README accordingly
• I have tested this with an LLM client
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have documented all environment variables and configuration options

Additional context

https://api.slack.com/methods/conversations.history

[olaservo]

Thanks for contributing this PR. This server has been moved to the archived repository at https://github.com/modelcontextprotocol/servers-archived to reduce maintenance overhead, so we can focus our efforts on a smaller set of core servers.
Since we're no longer accepting contributions to this server, we won't be able to merge this PR. If you're interested in contributing similar functionality, we recommend checking out the alternatives listed in the Readme.