21st.dev valid

21st (https://21st.dev)

Community catalog of 12,000+ hand-crafted React and Tailwind CSS components, templates, and component libraries. Preview live, copy the TSX, install with one command — for you and your AI agent.

Authority
52 reach 11 · trust 5 · quality 21 · freshness 15
Tier
listed
llms.txt
https://21st.dev/llms.txt
Sections
12
Links
41
Size
12326 bytes
Popularity rank
#60254
Country
US
First seen
2026-10-18T15:08:53.660Z
Last checked
2026-10-18T16:54:58.640Z
Badge
Agent Web Map badge for 21st.dev

Own this site? Verify it

Verified listings rank first, reach the featured tier (do-follow links) at 60 authority instead of 70, get a link in our llms.txt, a badge, breakage alerts, an editable profile, lookup analytics, and instant re-crawls. Prove ownership with any one of these, then call the verify endpoint (or your agent can do all of it, also over MCP).

  1. llms.txt link (recommended) — add this line to your llms.txt:
    - [Agent Web Map](https://agentwebmap.com/domain/21st.dev?verify=awm_3ae706e9920e0069de063aed865d5d43)
  2. DNS — add a TXT record:
    _agentwebmap.21st.dev. TXT "awm-verify=awm_3ae706e9920e0069de063aed865d5d43"
  3. Meta tag — in your homepage <head>:
    <meta name="agentwebmap-verify" content="awm_3ae706e9920e0069de063aed865d5d43">
  4. Well-known file — serve the token at:
    https://21st.dev/.well-known/agentwebmap-verify.txt  ->  awm_3ae706e9920e0069de063aed865d5d43

Then: curl -X POST https://agentwebmap.com/v1/sites/21st.dev/verify — the response contains your API key. Full docs.

Machine-readable: GET /v1/domain/21st.dev · this page as Accept: application/json or text/markdown · MCP lookup_domain