API Scraping
API Scraping
We architect API extraction pipelines that handle OAuth flows, JWT refresh cycles, and complex pagination schemes. Our API scraping solution doesn’t just fetch endpoints—it manages authentication state, respects rate limits, and normalizes responses into clean JSON or CSV . No black-box extraction—every step is observable.
Technical Architecture
Our API orchestration layer uses Python httpx with async support for concurrent requests. For OAuth-protected endpoints, we implement token refresh logic with secure credential storage. GraphQL queries get optimized with persistent connections and query batching. SOAP APIs route through zeep with WSDL caching. We implement exponential backoff with jitter for rate limit handling, and circuit breakers prevent cascade failures when APIs degrade. Response validation uses Pydantic schemas that reject malformed data at the edge.
Data Quality & Validation
API responses vary wildly in structure. Our schema registry stores versioned Pydantic models for each endpoint, validating every response against expected types and constraints. Missing fields trigger configurable alerts. For Data Imputation , we backfill nullable fields from historical patterns when APIs return incomplete data. ETL pipelines transform nested JSON into flat tabular formats suitable for warehouse loading. All transformations log lineage for Data Observability .
Anti-Bot Strategy
Many APIs deploy token-based rate limiting, device fingerprinting, and behavioral analysis. We handle OAuth device flows where required, implement Session Persistence across request sequences, and randomize request timing to avoid pattern detection. For API gateways with IP-based throttling, our residential proxy network provides diverse egress points. Some APIs require header ordering verification—we match browser-like header sequences exactly.
Compliance & Ethical Standards
We access only publicly documented APIs with legitimate authentication. Our pipelines respect rate limits specified in API contracts—no unauthorized acceleration. For Data Sanitization , we strip any PII accidentally exposed in API responses before storage. GDPR and DPDP Act 2023 compliance includes documented data handling for any personal data encountered. We never scrape undocumented endpoints or reverse-engineer closed APIs for unauthorized access.