Fact check

x402 resource x402 REST

x402.asterpay.io · x402.asterpay.io · Search & Research

Provider site ↗

Source-bounded fact-check. Verify a claim against provided source text. Returns verdict: supported, contradicted, or unverifiable. Does NOT search the web.

Price per call 0.015 USDC per call published unit: per call

Calls · 30d 50 counted by the source, no daily split

Payers · 30d 32 distinct paying addresses seen by the source

Observed inflows · 30d — not attributable

Inflow growth · 7d — not comparable (baseline under $1 or window incomplete)

Payment evidence Attribution blocked confidence: low · read 2026-10-31

Observed inflows · last 30 days

No inflow observed in this window

The payout address is also published by 14 other service(s); the volume cannot be attributed to one of them.

Observed inflows by window for Fact check.
Window	Observed	Transfers
Last complete day (2026-10-30)	—	—
Last 7 days	—	—
Last 30 days	—	—
Growth, 7d against the 7 before	not comparable

Source: on-chain transfer scan (USDC on Base) Window: 2026-10-01 → 2026-10-30 Scanned: 30/30 days Sample: 0 days with a measurement First seen: never Last update: 2026-10-30

Daily history →. Observed transfers show value arriving at the payout address; they do not establish service revenue.

Blockchain wallets

Full addresses · public payment evidence

Receiving wallets are payment addresses published for this service. Sending wallets transferred funds to an exclusive receiving address; this alone does not prove a purchase or identify an agent.

Receiving wallets · provider payment addresses

All published receiving wallet addresses for Fact check.
Network	Full wallet address	Evidence
Base	0xd5f8481d8f25d3966d2010dbf9b47ffbdf745a9e	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
Polygon	0xd5f8481d8f25d3966d2010dbf9b47ffbdf745a9e	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
Optimism	0xd5f8481d8f25d3966d2010dbf9b47ffbdf745a9e	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
EVM chain 1187947933	0xd5f8481d8f25d3966d2010dbf9b47ffbdf745a9e	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
Arbitrum	0xd5f8481d8f25d3966d2010dbf9b47ffbdf745a9e	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
Ethereum	0xd5f8481d8f25d3966d2010dbf9b47ffbdf745a9e	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar

Sending wallets · observed counterparties

No sending wallet addresses have been retained for this service. Buyer wallets are unknown; daily totals and reported payer counts do not reveal their addresses.

Coverage includes retained scans only, not every historical transaction. Earlier daily totals cannot recover sender addresses. Sender lists exclude shared receiving wallets, whose transfers could belong to another service. A provider address does not establish wallet ownership.

Competitors & category benchmark

Rank the whole category →

Closest competitors Search & Research

Exa 8,652 calls · 0.007 USDC per call —
Pocket Network 5,345 calls · 0.005 USDC per call $432.22
StableTravel 4,437 calls · 0.02 USDC per call $118.87
Search 3,416 calls · 0.006 USDC per call —
Search 2,200 calls · 0.001 USDC per call —

Sorted by source-measured calls, not by our opinion. The right-hand figure is observed inflow, which stays empty for peers whose address is shared.

Category benchmark 17,231 services in this category

With a measured call count	10,507 (61.0 %)
With a published price	11,005 (63.9 %)
With attributable inflows	112 (0.6 %)
Observed inflows · 30d	$3,430.69
Median measured calls	2
Median price per call	$0.01

Similar services

All of Search & Research →

Exa x402 REST usage

Exa /search endpoint

api.exa.ai Search & Research 8,652 calls / 30d checked 2026-10-31

0.007 USDC per call per call

Pocket Network x402 REST usage

Web search built for agents, served over Pocket Network: POST /v1/search with a query and an optional max_results, and get the results back as one JSON object. Results vary run to run, as web search does. GET /v1/version...

agent.pocket.network Search & Research 5,345 calls / 30d checked 2026-10-31

0.005 USDC per call per call

StableTravel x402 REST usage

Search cached Seats.aero award availability by origin, destination, dates, cabin, carriers, and pagination.

stabletravel.dev Search & Research 4,437 calls / 30d checked 2026-10-31

0.02 USDC per call per call

Search x402 REST usage

Search Twitter/X tweets with advanced filters. Returns up to 20 tweets per page, most recent first, with pagination. At least one filter required. Params: words, phrase, anyWords, noneWords, hashtags, from, to, mentionin...

x402.twit.sh Search & Research 3,416 calls / 30d checked 2026-10-31

0.006 USDC per call per call

Chosen by category and by whether we have measured them, not by who pays us. A sponsored placement in this list is labelled as such.

Service details, payment routes and source evidence

Where you can pay

6 routes from the provider's payment requirements

Payment networks and amounts published for Fact check.
Network	Scheme	Amount	Asset
Arbitrum	exact	0.015	USDC
Base	exact	0.015	USDC
EVM chain 1187947933	exact	—	—
Ethereum	exact	0.015	USDC
Optimism	exact	0.015	USDC
Polygon	exact	0.015	USDC

“exact” is the price per call. “upto” is a ceiling the client sets, not a price. Atomic amount 15000 = 0.015 USDC per call on Base. 6 payment options published.

What you can call

access: payment per call (x402)

endpoint https://x402.asterpay.io/v2/x402/ai/fact-check

Request

{
    "body": {
        "claim": "Apple reported revenue of $94.9 billion in Q1 2024",
        "source": "Apple Inc. reported fiscal first-quarter revenue of $119.6 billion, a new record."
    },
    "bodyType": "json",
    "method": "POST",
    "type": "http"
}

Response

{
    "example": {
        "claims_checked": 1,
        "confidence": 0.98,
        "evidence": "Source states $119.6B, not $94.9B as claimed.",
        "latency_ms": 820,
        "model": "llama-3.3-70b-versatile",
        "summary": "Revenue figure directly contradicted by source.",
        "verdict": "contradicted"
    },
    "type": "json"
}

Examples are the provider's own, not a call we made.

Opportunity insights

2 findings from measured data

Payment attribution is blocked

The payout address is shared with 14 other service(s). That is normal for facilitator and platform addresses, and it is why this profile shows no inflow figure. The volume exists — it just cannot be split without inventing a rule.
How attribution works →
Category benchmark

112 of 17,231 services (0.6%) in Search & Research have attributable inflows; 10,507 have a source-measured call count. Median measured calls: 2.
Rank this category by observed inflows →

What the provider says

Source-bounded fact-check. Verify a claim against provided source text. Returns verdict: supported, contradicted, or unverifiable. Does NOT search the web.

Quoted from x402 Bazaar · source record · read 2026-10-31

Facts and where they come from

Price: 0.015 USDC per call Provider claim
Recorded value: 0.015 USDC per call.
Unit: per call
Protocol: x402, REST · transport: HTTP Provider claim
Auth: x402
Endpoint: https://x402.asterpay.io/v2/x402/ai/fact-check
Source: x402 Bazaar (Coinbase CDP) · Public discovery API (provider-published records)
Last checked: Not checked by us yet — the data is as the source published it
First seen: 2026-10-24
Usage: 50 calls · 32 unique payers in the 30 days before 2026-10-31. Measured by the x402 Bazaar, not by us and not by the provider.

Money, and what it actually proves

Verified revenue · 30d Unknown

Observed inflows · 30d —

Attribution Shared

Receipt ledger Not connected

Attribution blocked · confidence low
The payout address is also published by 14 other service(s); the volume cannot be attributed to one of them.

Why revenue is “unknown”. A revenue figure needs a receipt: an amount a buyer actually paid for this service. We hold none for this entry, and we hold no funds at all. What we have instead is an activity value of $0.75 — the source's call count multiplied by the published price. That is what the list price implies, not what anyone paid. The payout address is also published by 14 other service(s); the volume cannot be attributed to one of them.

Daily market statistics — the ledger view, day by day

No daily history has been archived for this service yet. Open the full daily history →