Grafbase: MCP server, CLI and agent surfaces
Not verified. A source lists an MCP endpoint for Grafbase (api.grafbase.com), but it did not answer a handshake on 4 November 2026, so it is not counted. The connector recorded: no MCP answer (POST HTTP 404, GET HTTP 404 text/plain; charset=utf-8).
Fact sheet
| Company | Grafbase |
|---|
| Domain | grafbase.com |
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| Category | Infrastructure (Ora leaderboard category) |
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| MCP server | No answer |
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| Ora score | 45, grade D; Ora scanned the domain on 19 April 2026 and the cached score was read on 5 November 2026 from Ora's leaderboard (Ora's score page for grafbase.com, a vendor-published score) |
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| Company found through | the awesome-remote-mcp-servers list; Ora's public leaderboard |
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| Last verified | 4 November 2026 |
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MCP server
| Endpoint | https://api.grafbase.com/mcp |
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| How it was found | listed in the awesome-remote-mcp-servers list; Ora's public leaderboard |
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| HTTP status | 404 |
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| Connected | 4 November 2026, 20:03 UTC |
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| Handshake time | 445 ms over 2 attempts |
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| Result | no MCP answer (POST HTTP 404, GET HTTP 404 text/plain; charset=utf-8) |
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Connector log
2 connections on 4 November 2026, read-only methods only
- 19:57:43Z https://api.grafbase.com/mcp sent initialize result no-answer (HTTP 404) 879 ms
- 20:03:07Z https://api.grafbase.com/mcp sent initialize result no-answer (HTTP 404) 445 ms
Authentication
| Auth type | Auth not determined |
|---|
| Auth as listed by a registry | OAuth 2.1 (a claim, not checked by connecting) |
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The sign-in route, step by step
- Request
https://api.grafbase.com/mcp. The connector could not tell what it wants: no MCP answer (POST HTTP 404, GET HTTP 404 text/plain; charset=utf-8). - Check the vendor's docs for the sign-in route before wiring a client.
See OAuth for MCP: client ID metadata documents and dynamic registration for how each route works.
CLI
No CLI is on record for Grafbase. The directory checks a package only where a source names one, so this is a floor: a company can ship a command line that no source read for this edition mentions. See shipping a CLI agents can use.
Other agent surfaces
Agent surfaces other than MCP and CLI| Surface | Result |
|---|
| OpenAPI file | No OpenAPI file at the root paths checked. |
| WebMCP in the initial HTML | Not detected on the home page by the shared crawl. |
| MCP discovery file | Not found (the crawl got a non-200 answer). |
| A2A agent card | Not found (the crawl got a non-200 answer). |
| A2A agent card (older path) | Not found (the crawl got a non-200 answer). |
| agents.json | Not found (the crawl got a non-200 answer). |
| OAuth authorization server metadata | Not found (the crawl got a non-200 answer). |
| NLWeb endpoint | Not checked in this edition. |
Registry listings
Registry listings| Registry | Listed |
|---|
| Official MCP Registry | No |
| GitHub MCP Registry | No |
| awesome-remote-mcp-servers | Yes |
| Smithery | Not checked: Smithery's listing pages and search API were unavailable on 4 November 2026. |
| Glama | Not checked: Glama's API needs a key and attribution terms. |