Attio MCP Server vs SingleOps MCP by usefulapi
Attio MCP Server is an MCP server published by kesslerio. Marketplaces we read that list it: 2 (Official MCP Registry, npm registry (MCP servers)). SingleOps MCP by usefulapi is an MCP server published by usefulapi.io. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-09. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  Attio MCP Server |   SingleOps MCP by usefulapi |
|---|---|---|
| Official MCP Registry | Listed Version: 1.7.0 Downloads/month (npm): 2 390 Downloads/week (npm): 633 Forks (GitHub): 23 Stars (GitHub): 68 Not marked · First seen |
Listed Version: 1.3.5 Forks (GitHub): 0 Stars (GitHub): 1 Not marked · First seen |
| npm registry (MCP servers) | Listed Version: 1.7.0 Downloads/month (npm): 2 390 Downloads/week (npm): 633 Forks (GitHub): 23 Stars (GitHub): 68 Not marked · First seen |
Not listed |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | Attio MCP Server | SingleOps MCP by usefulapi |
|---|---|---|
| Marketplaces that list it (differs) | 2 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 68 (better) | 1 (worse) |
| Forks (GitHub) (differs) | 23 (better) | 0 (worse) |
| Last release (differs) | Not published | 2026-11-07 |
| Where it runs (differs) | Remote server or your machine | Remote server (singleops.usefulapi.io/mcp) |
| Transport (differs) | stdio, Streamable HTTP | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 4, secrets among them: 1 | Not published |
| Licence (differs) | Apache-2.0 | Not stated |
| Repository (differs) | github.com/kesslerio/attio-mcp-server | github.com/m190/usefulapi-mcp |
| Changes in the last 7 days (differs) | 0 | 11 |
| First seen (differs) | 2026-10-11 | 2026-11-01 |
| Endpoint at the last check (differs) | Status out of date: last check 44 h ago returned HTTP 404 | Responded 27 h ago, requires authentication |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
Attio MCP Server
AI-powered Attio CRM access. Manage contacts, companies, deals, tasks, notes and workflows.
SingleOps MCP by usefulapi
Search clients, list operations and custom inputs; create leads in SingleOps.
How to run each
Attio MCP Server As a local MCP server: npm package
claude mcp add --env "ATTIO_API_KEY=<YOUR_ATTIO_API_KEY>" --transport stdio attio-mcp-server -- npx -y attio-mcpRequires: ATTIO_API_KEY (secret)
SingleOps MCP by usefulapi As a remote MCP server
claude mcp add --transport http singleops https://singleops.usefulapi.io/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only the endpoint of SingleOps MCP by usefulapi responded at the last daily check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
The marketplaces of SingleOps MCP by usefulapi publish no settings it asks for, so we do not compare settings.
What it can do: Attio MCP Server · What it can do: SingleOps MCP by usefulapi · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Package data comes from the public npm registry (registry.npmjs.org). Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.