MCP Comparison · 2026
Circleback vs Fathom MCP Server
Comparing Circleback and Fathom as MCP servers? Circleback (chatgpt app) is best when sales-call summarization. Fathom (access meeting recordings) is best when sales call recall. Both run as Model Context Protocol servers and can coexist in the same client. Updated 2026.
Side-by-side specs
Pulled from each MCP's verified fact sheet.
| Circleback | Fathom | |
|---|---|---|
| Primary function | ChatGPT App | Access Meeting Recordings |
| Maintainer | Circleback | Fathom |
| Pricing | Free | Freemium |
| Setup complexity | Low · ~< 1 min | Low · ~2 min |
| Transport | Streamable HTTP | Streamable HTTP |
| Auth model | OAuth 2.1 | OAuth 2.1 |
| License | Proprietary | Proprietary |
| Language | — | — |
| Latest version | — | — |
| Compatible clients | ChatGPT | Claude, Cursor, ChatGPT, Any MCP-compatible client |
| Last verified | 2026-05-28 | 2026-06-11 |
Which one should you pick?
Decision rubric drawn from each MCP's documented strengths.
Choose Circleback
- Sales-call summarization
- CRM action-item lookup from past meetings
- Cross-meeting topic search ("what did the client say about pricing last quarter?")
Choose Fathom
- Sales call recall
- Customer-success meeting summaries
- Cross-call pattern search
Pick something else if…
- Teams not already on Circleback
- Teams not on Fathom
Feature breakdown
Key capabilities each server ships out of the box.
Circleback
- Search and summarize Circleback meeting transcripts from ChatGPT
- Surface assigned action items by person or deal
- OAuth — no API key, billing stays on Circleback's side
- Listed in the official ChatGPT Apps directory
- Available on ChatGPT Free, Go, Plus, and Pro plans
Fathom
- Official remote MCP at `https://api.fathom.ai/mcp`
- OAuth authentication, hosted by Fathom
- Access to recordings, transcripts, AI summaries, team, webhooks
- Works with Claude, ChatGPT, Cursor, and any MCP client
- No npm install — remote endpoint only
Install snippets
Open the detail page for ready-to-paste config for every major client.
FAQ
Circleback vs Fathom: which MCP server should I use?
Pick Circleback when sales-call summarization. Pick Fathom when sales call recall. Circleback is built for chatgpt app, while Fathom focuses on access meeting recordings.
Can I run both Circleback and Fathom together?
Yes. MCP clients run each server as a separate process and surface every server's tools simultaneously, so you can install both and let your agent decide which to call. Be deliberate with auth scopes when stacking servers.
How fresh is this comparison?
Updated for 2026. Circleback's last verification: 2026-05-28. Fathom's last verification: 2026-06-11. We refresh detail-page facts on every catalog rebuild.
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