
Telegraph - API Client
API Testing & Validation
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What's New in Telegraph
3.0
March 13, 2026
Batch Testing by Collection: filter and run tests for a specific collection instead of all endpoints Keychain Security: authentication credentials now stored in device Keychain instead of iCloud for stronger security Environment Variable Highlighting: {{variables}} shown in blue in the calculated URL bar Documentation Builder: endpoints grouped by collection with search filter and bulk select/deselect Improved Documentation Editor: endpoint description and auth notes use native text areas for reliable editing PDF Export: faster, more reliable PDF generation using load-complete detection HTML Export: sanitised output prevents script injection in exported documentation Clickable Collection Headers: tap the folder name, icon or chevron to expand/collapse, much larger hit target Save State: blue save indicator resets correctly when switching between endpoints SSL Warning: visible alert when sending auth credentials with SSL verification turned off OAuth 2.0: fixed token requests to use proper URL encoding, preventing issues with special characters OAuth 2.0: invalid auth URL now shows a clear error instead of crashing Stability: fixed potential hangs on non-standard SSL challenges and removed crash paths in the code editor Auth Lifecycle: duplicating or deleting a request now correctly handles associated auth data Usage Limits: corrected messaging, request and environment creates are monthly, sends and tests are daily Dynamic User-Agent: headers tab now shows your actual configured User-Agent value Environment Limits: creation limits now properly enforced in the Environments screen
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