arXiv MCPPOST
Two pay-per-call x402 endpoints for arXiv: papers/search ($0.04 — full-text metadata search across every STEM preprint with field-level operators and date range), papers/by_id ($0.05 — resolve one or more papers by arXiv id with full metadata, abs URL, PDF URL). No signup, no API key — pay USDC on Base.
Api EndpointScience And EducationHealthy · 194 ms0.05 USDC0.05 USDC · eip155:8453 · USDC
https://arxiv-mcp.mtree.workers.dev/v1/papers/by_id