MadKudu Legacy Scoring API
The legacy MadKudu Scoring API returns customer-fit (demographics), likelihood-to-buy and lead-grade scores for companies by domain and persons by email, plus a job-changes watch list and a ping utility — 6 operations. Authentication is HTTP Basic (API key as username, empty password) with a different key from MadAPI; rate limited to 600 requests per endpoint per minute (HTTP 429 when exceeded). MadKudu labels this surface "Legacy" and steers new integrations to MadAPI, but publishes no dated deprecation or sunset policy.
Documentation
Documentation
https://developers.madkudu.com/legacy-api
Authentication
https://raw.githubusercontent.com/api-evangelist/madkudu/refs/heads/main/authentication/madkudu-authentication.yml
RateLimits
https://raw.githubusercontent.com/api-evangelist/madkudu/refs/heads/main/rate-limits/madkudu-rate-limits.yml
Specifications
Other Resources
Overlay
https://raw.githubusercontent.com/api-evangelist/madkudu/refs/heads/main/overlays/madkudu-legacy-api-overlay.yaml
ErrorCatalog
https://raw.githubusercontent.com/api-evangelist/madkudu/refs/heads/main/errors/madkudu-problem-types.yml
SDKs
https://raw.githubusercontent.com/api-evangelist/madkudu/refs/heads/main/packages/madkudu-packages.yml