freeapis

CSR.plus

Generate certificate signing requests and private keys without OpenSSL

Authentication
No auth
HTTPS
Yes
CORS
Yes
Category
Security
Data source
public-apis
Documentation / URL
https://csr.plus/docs/api

Overview

CSR.plus generates and inspects CSR (certificate signing requests) — keyless, CORS-enabled.

⚠️ Status (verified 2026-08): a guessed path returned HTTP 404 (HTML) — the route paths differ. Check the docs (csr.plus/docs/api) for valid routes.

What it provides

curl "https://csr.plus/api/v1/csr?domain=google.com"

Notes

  • CSR generation and inspection tools.
  • Route paths per the docs.

FAQ

Is CSR.plus free? Yes — free and keyless.

Why 404? Our 2026-08 guess path was wrong (verified) — check the docs.

What does it do? CSR generation/inspection.

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