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MARKET MONITOR / CATALOGUE Services 131,106 MCP listed 40,658 x402 90,515 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-29 · 3 sources
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Daily transfers, volume and coverage →

TCP Port Scanner

x402 resource x402 REST

port-scanner.underscoredone.com · port-scanner.underscoredone.com · Infrastructure

Provider site ↗

Give this API a hostname or IP address and it tries connecting to each port in your requested range. For every port that answers it reports whether it is open or blocked, which service is likely running there (a web server, SSH), and what software version was detected. Saves you installing network t

Price per call 0.01 USDC per call published unit: per call
Calls · 30d 3 counted by the source, no daily split
Payers · 30d 3 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 2026-10-29

Observed inflows · last 30 days

No inflow observed in this window

The payout address is also published by 30 other service(s); the volume cannot be attributed to one of them.

Observed inflows by window for TCP Port Scanner.
Window Observed Transfers
Last complete day (2026-10-28) — —
Last 7 days — —
Last 30 days — —
Growth, 7d against the 7 before not comparable
Source: on-chain transfer scan (USDC on Base) Window: 2026-09-29 → 2026-10-28 Scanned: 30/30 days Sample: 0 days with a measurement First seen: never Last update: 2026-10-28

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 TCP Port Scanner.
NetworkFull wallet addressEvidence
Solana 8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
Base 0xe9740820225b3918b4ddd1292c7ca4ca0e2c2f08 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 Infrastructure

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 6,005 services in this category
With a measured call count 944 (15.7 %)
With a published price 1,083 (18.0 %)
With attributable inflows 19 (0.3 %)
Observed inflows · 30d $66.56
Median measured calls 2
Median price per call $0.01

Similar services

All of Infrastructure →

Events x402 REST usage

Query Ethereum contract event logs via eth_getLogs - filter by contract, topic, and block range

api.onesource.io Infrastructure 209 calls / 30d checked 2026-10-29
0.005 USDC per call per call

Agent Web Tools x402 REST usage

Check if a URL is up: status, latency, redirects, title.

agent-web-tools.agent-web-tools.workers.dev Infrastructure 65 calls / 30d checked 2026-10-29
0.001 USDC per call per call

Pulse x402 REST usage

China pulse, cheap enough to POLL: what China is talking about RIGHT NOW and what is NEW since your last call - built for agents that monitor continuously. Returns `consensus` (phrases trending on 2+ of Weibo/Baidu/Douyi...

stockwaves.net Infrastructure 63 calls / 30d checked 2026-10-29
0.003 USDC per call per call

StableStudio x402 REST usage

Get a client token for direct upload to Vercel Blob

stablestudio.dev Infrastructure 58 calls / 30d checked 2026-10-29
0.01 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

2 routes from the provider's payment requirements
Payment networks and amounts published for TCP Port Scanner.
Network Scheme Amount Asset
Base exact 0.01 USDC
Solana exact 0.01 USDC

“exact” is the price per call. “upto” is a ceiling the client sets, not a price. Atomic amount 10000 = 0.01 USDC per call on Base. 2 payment options published.

What you can call

access: payment per call (x402)

endpoint https://port-scanner.underscoredone.com/scan

Request

{
    "body": {
        "ports": "1-1000",
        "scan_type": "tcp_connect",
        "target": "scanme.nmap.org",
        "timeout": 30
    },
    "bodyType": "json",
    "method": "POST",
    "type": "http"
}

Response

{
    "example": {
        "api_version": "1.0.0",
        "closed_or_filtered_count": 998,
        "complete": true,
        "duration_ms": 4521,
        "open_ports": [
            {
                "port": 22,
                "protocol": "tcp",
                "service": "ssh",
                "state": "open",
                "version": "OpenSSH 8.2p1"
            },
            {
                "port": 80,
                "protocol": "tcp",
                "service": "http",
                "state": "open",
                "version": "Apache httpd 2.4.41"
            }
        ],
        "ports_requested": 1000,
        "ports_scanned": 1000,
        "resolved_ip": "45.33.32.156",
        "scan_type": "tcp_connect",
        "target": "scanme.nmap.org",
        "warning": ""
    },
    "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 30 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

    19 of 6,005 services (0.3%) in Infrastructure have attributable inflows; 944 have a source-measured call count. Median measured calls: 2.

    Rank this category by observed inflows →

What the provider says

Give this API a hostname or IP address and it tries connecting to each port in your requested range. For every port that answers it reports whether it is open or blocked, which service is likely running there (a web server, SSH), and what software version was detected. Saves you installing network tools, parsing command-line output, or writing socket loops. Only scan hosts you own or have permission to scan - this tool does not check that for you.

Quoted from x402 Bazaar · source record · read 2026-10-29

Facts and where they come from

Price
0.01 USDC per call Provider claim
Recorded value: 0.01 USDC per call.
Unit
per call
Protocol
x402, REST · transport: HTTP Provider claim
Auth
x402
Endpoint
https://port-scanner.underscoredone.com/scan
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
3 calls · 3 unique payers in the 30 days before 2026-10-29. 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 30 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 $0.03 — 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 30 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 →

Payment rails

Solana · exact · USDC
8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b
0.01 USDC
From source record
Base · exact · USDC
0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08
0.01 USDC
From source record

A payment rail is where the provider asks to be paid. It is not proof that anything was paid through it.

Provenance

One row per statement. “Verified” means we checked it ourselves and the finding is quoted. “Provider claim” means we read it in the provider's own record. “Not found” is a statement about our search, not proof of absence.

Statement Status What we found Source Checked
Endpoint Provider claim
https://port-scanner.underscoredone.com/scan
Evidence

Als Resource-URL im Bazaar-Eintrag geführt.

 api.cdp.coinbase.com 2026-10-29
Input output Provider claim
Request/response examples published with the listing
Evidence

Beispiel-Ein- und -Ausgabe stammen aus dem Bazaar-Eintrag des Anbieters.

 api.cdp.coinbase.com 2026-10-29
Payment Provider claim
2 rails: Base, Solana · payee 0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08
Evidence

Aus den `accepts`-Einträgen: Netzwerk, Asset, Empfängeradresse und Betrag. Die Adresse ist die Grundlage der späteren On-Chain-Zuordnung; sie ist noch nicht durch eine eigene 402-Antwort bestätigt.

 api.cdp.coinbase.com 2026-10-29
Pricing Provider claim
0.01 USDC per call
Evidence

Atomic amount 10000 = 0.01 USDC per call on Base. 2 payment options published. Netzwerk: Base, Solana.

 api.cdp.coinbase.com 2026-10-29
Protocol Provider claim
x402 (HTTP 402 payment challenge)
Evidence

Im x402 Bazaar als zahlungspflichtige HTTP-Ressource gelistet (x402Version 2, Typ http).

 api.cdp.coinbase.com 2026-10-29
Provider Provider claim
port-scanner.underscoredone.com
Evidence

Die Ressource wird unter diesem Host im x402 Bazaar geführt; die Angaben stammen vom Anbieter.

 api.cdp.coinbase.com 2026-10-29
Usage Verified
3 calls / 3 unique payers in the last 30 days
Evidence

Source-reported usage from Coinbase x402 Bazaar, read on 2026-10-29. Letzter Aufruf laut Quelle: 2026-10-21T07:00:33.52Z. Aufrufe sind kein Umsatz.

 api.cdp.coinbase.com 2026-10-29

Endpoint checks

We have not called this endpoint yet. Until we do, everything above is what the source published — no more.

Tags

Port Scanner Port Scan Open Ports Tcp Port Scanner Scan Ports
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