B grade
auth-required
30 score
546 ms
100.0% uptime over 3 probes
AS16509 AMAZON-02 - Amazon.com, Inc., US · US
https://21st.dev/api/mcp
mcp first seen 2026-09-07 · last seen 2026-09-09 · json
Listed in
| source | name | description | external id |
|---|---|---|---|
| Official MCP Registry | 21st.dev | Search 21st.dev UI components & themes, get their code, and generate new ones with 21st AI. | dev.21st/mcp |
| agent-tools.cloud | 21st.dev | Search 21st.dev UI components & themes, get their code, and generate new ones with 21st AI. | mcp:21st-dev-21st-dev |
| Agenstry | 21st.dev | mcp:dev.21st/mcp |
Same host
agents-txt × 1 ard × 1 llms-txt × 1 · 1 alive robots × 1 · 1 alive sigdir × 1
Badge
embed:
<a href="https://agentprobe.org/endpoint/40800"><img src="https://agentprobe.org/badge/40800.svg" alt="agentprobe"></a>
Probe history
| probed (UTC) | outcome | score | status | ms | version | capabilities | error |
|---|---|---|---|---|---|---|---|
| 2026-09-09 08:10 | auth-required | 30 | 401 | 546 | detailsmeta {"final_url":"https://21st.dev/api/mcp","www_authenticate":"Bearer resource_metadata=\"https://21st.dev/.well-known/oauth-protected-resource/api/mcp\"","oauth":{"prm_url":"https://21st.dev/.well-known/oauth-protected-resource/api/mcp","resource":"https://21st.dev/api/mcp","authorization_servers":["https://clerk.21st.dev"],"scopes_supported":["openid","profile","email"]},"vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-08 07:52 | auth-required | 30 | 401 | 646 | detailsmeta {"final_url":"https://21st.dev/api/mcp","www_authenticate":"Bearer resource_metadata=\"https://21st.dev/.well-known/oauth-protected-resource/api/mcp\"","oauth":{"prm_url":"https://21st.dev/.well-known/oauth-protected-resource/api/mcp","resource":"https://21st.dev/api/mcp","authorization_servers":["https://clerk.21st.dev"],"scopes_supported":["openid","profile","email"]},"vantage":"us-east-1"} | ||
| 2026-09-07 06:41 | auth-required | 30 | 401 | 117 | detailsmeta {"final_url":"https://21st.dev/api/mcp","www_authenticate":"Bearer resource_metadata=\"https://21st.dev/.well-known/oauth-protected-resource/api/mcp\"","oauth":{"prm_url":"https://21st.dev/.well-known/oauth-protected-resource/api/mcp","resource":"https://21st.dev/api/mcp","authorization_servers":["https://clerk.21st.dev"],"scopes_supported":["openid","profile","email"]}} |