# PetPulse > Veterinary intelligence API — evidence-based pet health guidance via x402 micropayments on Base mainnet. PetPulse provides AI-synthesized veterinary intelligence grounded in PubMed peer-reviewed research and FDA animal drug adverse event data. All endpoints return structured JSON and require x402 USDC micropayment on Base mainnet. ## Endpoints GET /api/pet/symptoms?species={dog|cat|...}&symptoms={comma-separated} - Returns: urgency rating (emergency / urgent / monitor / routine), urgency explanation, go-now signs, possible causes with likelihood, home care, what to tell your vet - Optional: age, weight, lang - Price: $0.10 GET /api/pet/research?topic={topic}&species={dog|cat|...} - Returns: PubMed-grounded research synthesis, evidence quality rating, key findings, clinical implications, product recommendations with Amazon + Chewy links - Optional: lang - Price: $0.10 GET /api/pet/nutrition?condition={condition}&species={dog|cat|...} - Returns: dietary approach, foods to emphasize, foods to avoid, key nutrients, supplements with evidence ratings, feeding tips, prescription diet options - Optional: lang - Price: $0.10 GET /api/pet/medication?drug={name}&species={dog|cat|...} - Returns: drug class, approved uses, typical dosing, mechanism of action, side effects (common/serious), contraindications, drug interactions, FDA adverse event data - Optional: weight, condition, lang - Price: $0.08 GET /api/pet/breed?breed={breed-name}&topic={health|nutrition|exercise|grooming} - Returns: breed overview, health risks with prevalence, nutrition notes, exercise needs, recommended products with Amazon + Chewy links, vet screenings to request - Optional: lang - Price: $0.08 ## Payment All endpoints use x402 protocol. No payment header → HTTP 402 with PAYMENT-REQUIRED header (0.08–0.10 USDC on Base mainnet). Send valid PAYMENT-SIGNATURE → 200 with structured JSON. ## Data Sources - PubMed E-utilities (NIH) — peer-reviewed veterinary research, no API key required - FDA openFDA Animal & Veterinary API — adverse event reports, no API key required - Tavily — real-time veterinary context and breed information - Claude Sonnet — synthesis and clinical interpretation ## Affiliate Disclosure Responses include Amazon and Chewy purchase links for recommended products. Links are affiliate links that support the service at no additional cost. ## Disclaimer For informational purposes only. Not veterinary advice. Always consult a licensed veterinarian for diagnosis, treatment, and medical decisions.