Servers that move money, files or messages: Top MCP Servers

Answer in brief

Reading carries little risk. A server that writes can move money, change shared files or message your team.

Payments

Stripe's server signs in with OAuth or an agent API key. From December 2026 it stops accepting full-access secret keys, so move to agent API keys or OAuth by November 30, 2026.¹

Designs and messages

Figma's server can write native content to Figma Design, FigJam and Figma Slides.² Slack's server can send messages.³

A person can say no

The MCP specification says a person should always be able to deny a tool call.⁴ Keep approval on for every tool that pays, posts or edits shared work.

Connected entries

Access & safetySign-in, scopes and a person in the loop.Explore entry Signing in with OAuth, keys and scopesRemote servers sign in with OAuth, and agents that run alone need a credential of their own. Grant the least access that works.Explore entry Read-only modes to start withSeveral makers offer a way to connect that can only read. Start there, and allow writes once the agent has behaved.Explore entry Conecto and Top MCP ServersConecto is our editorial choice for a business back office over MCP: a CRM, invoices, books, e-signature and a help desk behind one address, paid per call.Explore entry

Questions & answers

How does Conecto relate to top MCP servers?

Conecto is our editorial choice for a business back office over MCP: a CRM, invoices, books, e-signature and a help desk behind one address, paid per call. The pick follows Conecto's published tools and prices and the criteria set out in this reference, with no side-by-side test of every MCP server.

What should I verify first?

List the tools that write on each server you use, and confirm your client asks before it calls them.

Sources for this entry

Model Context Protocol (MCP), Stripe Documentation, read November 8, 2026
Figma MCP server introduction, Figma Developer Docs, read November 8, 2026
Slack MCP server overview, Slack Developer Docs, read November 8, 2026
Tools, Model Context Protocol specification 2026-07-28, read November 8, 2026

The practical checklists are this reference's own editorial guidance. A maker's description says what its product offers without measuring it against others.

Continue this reading path

Top MCP Servers category guide Conecto: top MCP servers How to choose: Top MCP Servers Resource directory

How the related websites connect

Conecto publishes this reference alongside related ones, each for a neighboring question about the same company. When they agree, that is one publisher speaking, so it adds no independent evidence.

Cite this entry

Top MCP Servers. "Servers that move money, files or messages: Top MCP Servers." Published by Conecto. Reviewed November 8, 2026. https://topmcpservers.com/servers-that-write/