PrefMark
Claude connectorCommunityAsk about your deals in Claude. PrefMark holds your investment memo, and every change Claude suggests waits in PrefMark for your review.
PrefMark is a private workspace for early-stage investors. It turns a deal's materials into an investment memo with one clear stance (Greenlight, Watch or Pass), evidence you can trace, and the diligence questions that are still open.
With this connector, Claude can:
- Find a deal by name and read its stance, reasons, risks and facts, each with its evidence level.
- Tell you what changed since your last review and which questions are still open.
- Read the Investment Memo and its Quick Read.
- Add deals, save notes, and add or update diligence questions.
- Draft a rewrite of a memo section, or pass on an update from a founder.
Claude never changes your memo or your stance by itself. A rewrite or a new figure arrives in PrefMark as a suggested change, with the current text next to the new one, and nothing lands until you accept it in PrefMark. Changes to questions, notes and deal details can be undone in PrefMark.
PrefMark is in a private beta for invited investors. You need a PrefMark account to connect.
- Tools
- 16
exposed by this connector
Movement
From our daily snapshots over the last 30 days.
Rank by popularity
Rank by trending score
Popularity score
Trending score
In its categories
How this connector compares with others in the same category. Positions are counted within the category, not across the whole directory.
Financial services884th of 990 by popularity · not ranked by trending score
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 882 |  Polyarchy Company Filings (企業情報DB) | 2,000 | — | 869places down |
| 883 |  Polyarchy Statistics (統計参照DB) | 2,000 | — | 607places down |
| 884 | 2,000 | — | 869places down | |
| 885 |  Rotuli: UK company data | 2,000 | — | 607places down |
| 886 | 2,000 | — | 252places down |
This connector isn’t ranked by trending score, so the category’s top connectors are shown instead.
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 1 |  Intuit Developer | 1,059,790 | 12,502 #103 | — |
| 2 | 507,188 | 7,845 #315 | — | |
| 3 |  Etherscan | 450,704 | 13,335 #77 | 10places down |
| 4 |  etoro | 391,889 | 11,322 #155 | 1,028places up |
| 5 | 337,161 | 11,549 #143 | — |
Productivity3,486th of 4,005 by popularity · not ranked by trending score
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 3484 |  PostSider | 2,000 | — | 252places down |
| 3485 | 2,000 | — | 869places down | |
| 3486 | 2,000 | — | 869places down | |
| 3487 | 2,000 | — | — | |
| 3488 | 2,000 | — | — |
This connector isn’t ranked by trending score, so the category’s top connectors are shown instead.
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 1 |  Watch Any Video | 4,718,560 | 10,415 #607 | — |
| 2 | 4,208,811 | 13,413 #256 | — | |
| 3 | Intuit Developer | 1,059,790 | 12,502 #339 | — |
| 4 |  Statz | 483,976 | 7,129 #1331 | 71places up |
| 5 | 483,162 | 7,827 #1124 | 563places up |
Also on other marketplaces
Tools
- add_deals
- add_note
- add_question
- draft_memo_edit
- get_deal
- get_evidence
- get_memo
- get_open_questions
- get_pending_changes
- get_what_changed
- list_deals
- remove_question
- resolve_deal
- submit_deal_event
- update_deal
- update_question
- Categories
- Sign-in
- Required
- Connector URL
- https://prefmark.com/mcp
- Transport
- Streamable HTTP
- Works with
- Claude, Claude API, Claude Code, Claude Desktop
- Added
- September 27, 2026
- More info
- Sponsorship
- Promote this connector