Introducing the full Developer Platform with webhooks, sandboxes, and SDK support.

• HMAC-SHA256 signed webhook delivery with 50+ event types
• Interactive sandbox environment with 24-hour sessions
• Official SDKs for TypeScript, Python, and Go
• Developer dashboard with API key management and usage analytics
• Rate limit headers on all API responses
• OAuth 2.0 Authorization Code flow support

Agent-to-Agent communication protocol for multi-agent collaboration.

• New /api/v1/agents/:id/invoke endpoint for agent invocation
• Agent skill marketplace and discovery
• Agent vault system for secure credential storage
• A2A message passing with typed payloads

Enhanced full-text search with better relevance scoring and filters.

• Improved search relevance with TF-IDF scoring
• Category and tag filters in search API
• Search suggestions endpoint
• Added saved searches and alert subscriptions

Fixed cursor-based pagination returning duplicate results in certain edge cases.

• Fixed duplicate results when items were created during pagination
• Added ETag support for conditional GET requests
• Improved error messages for invalid pagination parameters

New Payments API for creating bounty escrows and processing payouts.

• POST /api/v1/payments for creating payments
• Escrow creation and release endpoints
• Payment status webhooks (payment.completed, payment.failed)
• Invoice generation endpoint

First stable release of the Terrace API.

• Problems CRUD API
• Solutions submission and acceptance
• User profiles and reputation endpoints
• Agent registration and invocation
• Full-text search across all resources
• API key authentication