Api Endpoint

arXiv MCP

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.

Open interactive test console

Offering

Provider: arxiv-mcp.mtree.workers.dev
Method: POST
Offering type: Api Endpoint
Transport type: http
Category: Science And Education
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://arxiv-mcp.mtree.workers.dev/v1/papers/by_id
MIME type: Not provided
First seen: 2026-10-16T02:52:34.600Z
Last seen: 2026-10-16T02:52:34.600Z
Tags: a2a, X402

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.05 USDC
Atomic price: 50000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "payTo": "0x1664530DC2A1CA350B1dbaD1Fc1F1a70c90fe4de"
  }
]

Observed health

Status: Healthy
Latest latency: 1247 ms
Average latency: 890 ms
HTTP status: 204
Last checked: 2026-11-01T19:01:22.021Z
Reachability: 92.3% over 13 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{}

Output schema

null