--- title: "Companies starting with J | Agent MCP Directory" description: "12 companies starting with J: MCP server, CLI and OpenAPI status, checked 4 November 2026. Each row links to a full entry." canonical: https://agentmcpdirectory.com/directory/letter/j site: "Agent MCP Directory" last_updated: 2026-11-05 section: "Directory lists" --- # Companies starting with J | Agent MCP Directory > 12 companies starting with J: MCP server, CLI and OpenAPI status, checked 4 November 2026. Each row links to a full entry. Source: https://agentmcpdirectory.com/directory/letter/j Site: Agent MCP Directory Last reviewed: 2026-11-05 # Companies starting with J 12 companies in the directory start with the letter J: 3 listed tools to a client with no credentials, 6 answered with a sign-in challenge (not counted), and 0 have a CLI on record. Rows run from Jam.dev to JustClaw-It. ## Rows | Company | MCP server | CLI | Ora score | OpenAPI | WebMCP | Last verified | | --- | --- | --- | --- | --- | --- | --- | | Jam.dev jam.dev | Sign-in required OAuth DCR; tools not seen, not counted | – | 64 C | – | not read | 2026-11-04 | | JANCTION janction.jp | Sign-in required OAuth DCR; tools not seen, not counted | – | | yes | not read | 2026-11-04 | | Javadocs.dev javadocs.dev | Verified no auth | – | 47 D | yes | not read | 2026-11-04 | | Jet Admin jetadmin.io | None found | – | 65 C | – | no | 2026-11-04 | | JetBrains jetbrains.com | None found | – | 62 C | – | no | 2026-11-04 | | JFrog jfrog.com | None found | – | 70 B | – | no | 2026-11-04 | | Jitsu jitsu.com | Sign-in required OAuth DCR; tools not seen, not counted | – | 63 C | – | no | 2026-11-04 | | JobsPipe jobspipe.dev | Verified no auth | – | 96 A+ | yes | not read | 2026-11-04 | | Jotform jotform.com | Sign-in required OAuth DCR; tools not seen, not counted | – | 74 B | – | no | 2026-11-04 | | JumpCloud jumpcloud.com | Sign-in required OAuth DCR; tools not seen, not counted | – | 60 C | – | no | 2026-11-04 | | JustCall justcall.host | Sign-in required OAuth DCR; tools not seen, not counted | – | | – | not read | 2026-11-04 | | JustClaw-It justclaw.it.com | Verified no auth | – | | – | not read | 2026-11-04 | Ora score is Ora's cached score and grade for the company's domain, read on 5 November 2026 from GET /api/score/{domain}, or from Ora's GET /api/leaderboard of the same day where that was read first (a vendor-published figure). A blank cell means Ora returned no cached score for the domain, or the domain was not read. MCP status - [Verified](https://agentmcpdirectory.com/directory/status/verified/) 263 - [Sign-in required, tools not seen, not counted](https://agentmcpdirectory.com/directory/status/sign-in/) 533 - [Credential wall](https://agentmcpdirectory.com/directory/status/credential-wall/) 19 - [No answer](https://agentmcpdirectory.com/directory/status/no-answer/) 47 - [No tools listed](https://agentmcpdirectory.com/directory/status/no-tools/) 2 - [None found](https://agentmcpdirectory.com/directory/status/none-found/) 472 Auth type - [No authentication](https://agentmcpdirectory.com/directory/auth/none/) 263 - [API key](https://agentmcpdirectory.com/directory/auth/api-key/) 19 - [OAuth with client registration](https://agentmcpdirectory.com/directory/auth/oauth-dcr/) 517 - [OAuth without client registration](https://agentmcpdirectory.com/directory/auth/oauth/) 16 Edition 4 November 2026 Method [How rows are verified](https://agentmcpdirectory.com/method/) Data [CSV and JSON](https://agentmcpdirectory.com/data/) Markdown [This page as markdown](https://agentmcpdirectory.com/directory/letter/j/index.md) ## Sources - [Official MCP Registry API](https://registry.modelcontextprotocol.io/v0/servers), read 4 November 2026 - [Ora public leaderboard](https://ora.ai/leaderboard?utm_source=agentmcpdirectory.com&utm_medium=referral&utm_campaign=list), read 4 November 2026 - [Ora leaderboard, GET /api/leaderboard](https://ora.ai/api/leaderboard?utm_source=agentmcpdirectory.com&utm_medium=referral&utm_campaign=list), read 5 November 2026 - [Ora API reference, including GET /api/score/{domain}](https://ora.ai/llms-full.txt?utm_source=agentmcpdirectory.com&utm_medium=referral&utm_campaign=list), read 5 November 2026 Last reviewed 5 November 2026