x402 census · arxiv-mcp.mtree.workers.dev · 7b1425c158a7 · JSON
POST /v1/papers/search
unprobed
Full-text metadata search across every arXiv preprint. Filter by free-text query, title, author(s), category (cs, math, stat, physics, q-bio, q-fin, econ, eess, etc.), and submitted-date range. Returns titles, authors, abstracts, primary category, DOI, journal-ref, abs URL and PDF URL. Sort by relevance, lastUpdatedDate, or submittedDate.
Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://arxiv-mcp.mtree.workers.dev/v1/papers/search |
| Method | POST |
| Price | $0.04 USDC = 40000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | base (base) |
| payTo | 0x1664530DC2A1CA350B1dbaD1Fc1F1a70c90fe4de |
| Seller | arxiv-mcp.mtree.workers.dev |
| Catalogs | payai (row updated 2026-05-14) |
| Listed since (lower bound) | 2026-05-14 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-05-14 |
| CDP quality counters | not in the CDP catalog |
| Category (keyword rule) | agent-services |
| Templated path | no |
| x402Version in catalog | 1 |
| Service name / tags | none |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not probed in this build |
No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 5 |
| Payments | 7 |
| USDC volume | $0.67 |
| Median payment | $0.08 |
| First / last payment | 2026-06-29 / 2026-07-27 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x1664530DC2A1CA350B1dbaD1Fc1F1a70c90fe4de |
Try it (unpaid: shows the 402)
curl -si -X POST 'https://arxiv-mcp.mtree.workers.dev/v1/papers/search' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'
The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.
Paid checks (x402, USDC on Base)
GET https://bazaar.agentexchange.work/r/7b1425c158a7/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"7b1425c158a7"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.
Catalog references: PayAI listing status · this record as JSON · all resources on arxiv-mcp.mtree.workers.dev.