💰 Paid API

X402-Web-Tools

x402-web-tools.microtools-x402.workers.dev · x402-web-tools.microtools-x402.workers.dev

Search scholarly papers (OpenAlex index of 250M+ works). Returns up to 25 results with title, authors, year, venue, DOI, citation count, open-access PDF link, abstract (reconstructed from OpenAlex's inverted index; may be null when the publisher withholds it) and OpenAlex id. Optional from_year / to_year / open_access_only filters. Data: OpenAlex (CC0, openalex.org) with Crossref REST (crossref.org) for retraction notices and as fallback. Upstream errors are not charged. Costs $0.005 USDC per search via x402.

Trust score

22/100

grade F · 3 of 9 criteria apply

Uptime

not graded

catalogue listing · no agent card to probe

Observed inflow · 30d

Dispute or improve this rating

F

Conformance score: 22/100

Catalogue listing, not an A2A agent: a paid API listed by cdp_discovery. Scored on the 3 criteria that apply (9 of 40 points, scaled to 100); the A2A card criteria do not apply.

Show breakdown Hide breakdown

fail Live endpoint 0/25

No response from the host observed: listed by cdp_discovery only, not confirmed by our own probe.

partial Verified Identity 5/10

Provider declared: x402-web-tools.microtools-x402.workers.dev (https://x402-web-tools.microtools-x402.workers.dev/). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.

How to earn +5 points

Verify your domain ownership

Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.

Docs

pass Freshness + modern flags 4/5

seen in upstream source within 0d

n/a Agent card · Protocol version · JWS signature · Uptime track record · Skill declaration · Security declaration

Activity

last 24h · 0 invocations No personal data recorded

No activity in the last 7 days.

Listing history

1 snapshot

Snapshots

Agent card snapshots
Captured	Hash	Snapshot
2026-10-30 11:29:37 current	`a3a7b9f3b942…`	view →

Endpoints

Pricing x402 on Base USDC Facilitator feed

From $0.0050 per call

No per-endpoint prices published.

Try it ↗

Settlement wallet: 0x4007e27fe7a5f4381909eb7dc12a6862fb3c27e5 on Base · basescan ↗

Listed by facilitators PayAI · 1

Observed on-chain inflow verified on-chain

Last 7d

                  $0.00
                

0 transfers · synced 2026-11-11

Last 30d

                  $5.18
                

10 transfers · synced 2026-11-11

USDC on Base. Inflow to a wallet, not proof that every transfer was a paid call.

How it was settled and checked

x402-settled: $0.01 (0%) · 1 transfer sent by a known x402 facilitator (PayAI)

Other: $0.00 plain transfers sent by the payer · $5.16 other contract calls.

Reproducible via eth_getLogs on USDC Transfer events to the wallet. How we classify

Rolling 30-day inflow

2026-11-04 2026-11-12

Peak: $5.18

Payment authenticity How we measure this →

Single payer observed 2/5

Payer identities observed; a single payer accounts for effectively all observed volume.

The settlement wallet is shared with other indexed agents, so inflow cannot be attributed to this agent alone.

$5.18 assessed 10 transactions 2/29 days active · 30d window Payer identities available

A low label reflects what we can observe, not a finding about the operator.

How this was checked

3 evidence caveats · measured 2026-11-12.
Checks: daily volume aggregate, active day cadence, amount regularity, spike concentration, settlement wallet overlap, payer uniqueness, payer concentration, payer recurrence, payer payee overlap.
Sources: agent revenue daily, agents payment wallet, agent payment transactions.

Payer concentration and 7 / 30 / 90-day windows: wallet_intel, payment_intelligence · included in Pro

Agent card	`https://x402-web-tools.microtools-x402.workers.dev/`
Provider	https://x402-web-tools.microtools-x402.workers.dev/
Docs	https://x402-web-tools.microtools-x402.workers.dev/v1/papers/search

Discovered via

cdp discovery

Health · last 2 probes

Probe log

When	HTTP	Live JSON-RPC	Latency
2026-11-06 15:57:57	200	—	41ms
2026-10-30 12:02:36	200	—	27ms

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Audit evidence

JSON for vendor reviews. Signed copy verifies against our JWKS.

audit.json audit.json (JWS-signed) verification history

Raw agent card JSON

{
  "_source": "cdp_discovery",
  "resource_count": 1,
  "sample": "https://x402-web-tools.microtools-x402.workers.dev/v1/papers/search"
}