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Polly MCP Server for Claude

Polly runs an MCPserver, so Claude can create, manage, and check results on pollys directly from a conversation — no switching to Slack or the Polly dashboard.

Connecting Polly to Claude via MCP

✏️Note: this is different from using Polly through Slackbot's own AI features inside Slack — see [Polly MCP Server for Slack] for that lane. This doc covers connecting an external AI assistant like Claude directly to Polly.

What Claude can do

Scope Tools Lets Claude...
mcp:read list_pollys, get_polly, get_draft, search_templates Look up pollys, drafts, and templates
mcp:write draft_polly, create_polly, update_polly, close_polly, reopen_polly, cancel_draft, send_reminder Create, edit, send, close, reopen, and remind on pollys
mcp:results:read get_polly_results Pull vote counts and result breakdowns

Authoring is always two steps: draft_polly builds a preview and sends nothing, then create_polly publishes it — only once you've approved.

✏️Note: Not supported over MCP: recurring pollys, quizzes, Q&A, and trivia. Claude can only create and manage one-off polls and surveys.

Connecting

Connect it as a custom connector for now:

  1. In Claude, go to Settings → Connectors → Add custom connector
  2. Paste the server URL: https://mcp.polly.ai
  3. Leave Client ID and Secret blank — Polly registers the client automatically
  4. Click Add — you'll be redirected to log in with your Polly/Slack account
  5. Approve the scopes on the consent screen (mcp:read + mcp:write to author; add mcp:results:read if you want Claude reading results too)
  6. Polly shows as connected ✓

Claude Code (CLI):

claude mcp add --transport http polly https://mcp.polly.ai/mcp

💡Tip: Access tokens last 12 hours; most clients refresh silently, but you may occasionally need to reconnect.

Audience targeting

  • Channels — exact name match (# optional). No match returns up to 5 close suggestions. Archived channels, or private ones Polly hasn't been added to, are refused — /invite @Polly first.
  • People — email or Slack user ID resolve exactly; matching by display name returns candidates to choose from if there's more than one match.
  • If anything in the request can't be resolved, the whole send stops — Claude won't guess or partially send.

Example prompts

  • "Send a quick pulse survey to #product-team asking how confident they feel about the Q3 roadmap, 1–5 scale."
  • "Create an anonymous yes/no poll in #general asking if people want the holiday party on a Friday or Saturday, close it in 3 days."
  • "What are the results so far on the lunch preferences polly I sent yesterday?"

Troubleshooting

What you see Cause Fix
mcp-unavailable Plan doesn't include MCP (Enterprise/Custom) Contact a Polly Admin or connect with the Polly team at contact@polly.ai
mcp-disabled Admin toggle is off Turn on under Admin → Settings → AI Features
Results tools missing Connected without mcp:results:read Reconnect and approve the results scope
Asked to sign in again 12-hour token expired Reconnect — normal for clients that don't auto-refresh
invalid_redirect_uri Callback URL mismatch Check for trailing slash / http vs https mismatch