cnpj.ws valid

CNPJ.ws

CNPJ.ws is an API (Application Programming Interface) for querying data of Brazilian legal entities through the CNPJ (Cadastro Nacional da Pessoa Jurídica). It returns public company data in JSON format, making it easy to integrate with any software. Keep your suppliers' and customers' data always up to date by consulting the complete data of any company using its CNPJ.

Authority
51 reach 10 · trust 5 · quality 21 · freshness 15
Tier
listed
llms.txt
https://www.cnpj.ws/llms.txt
Sections
7
Links
40
Size
8360 bytes
Popularity rank
#85765
Country
US
First seen
2026-10-18T15:08:54.251Z
Last checked
2026-10-18T17:50:18.795Z
Badge
Agent Web Map badge for cnpj.ws

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/cnpj.ws?verify=awm_4d55c9a77594da78bc3eb9a8d3c1730b)
  2. DNS — add a TXT record:
    _agentwebmap.cnpj.ws. TXT "awm-verify=awm_4d55c9a77594da78bc3eb9a8d3c1730b"
  3. Meta tag — in your homepage <head>:
    <meta name="agentwebmap-verify" content="awm_4d55c9a77594da78bc3eb9a8d3c1730b">
  4. Well-known file — serve the token at:
    https://cnpj.ws/.well-known/agentwebmap-verify.txt  ->  awm_4d55c9a77594da78bc3eb9a8d3c1730b

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

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