TCP Port Scanner
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.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.01 USDC on Base to 0xE974…C2F08. The signed payment is good for 5 minutes.
- Paid to
- 0xE974…C2F08
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 8ugAWA…zQT3b
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"ports": "1-1000",
"target": "scanme.nmap.org",
"timeout": 30,
"scan_type": "tcp_connect"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"target": "scanme.nmap.org",
"warning": "",
"complete": true,
"scan_type": "tcp_connect",
"open_ports": [
{
"port": 22,
"state": "open",
"service": "ssh",
"version": "OpenSSH 8.2p1",
"protocol": "tcp"
},
{
"port": 80,
"state": "open",
"service": "http",
"version": "Apache httpd 2.4.41",
"protocol": "tcp"
}
],
"api_version": "1.0.0",
"duration_ms": 4521,
"resolved_ip": "45.33.32.156",
"ports_scanned": 1000,
"ports_requested": 1000,
"closed_or_filtered_count": 998
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"target"
],
"properties": {
"ports": {
"type": "string",
"description": "Which ports to check. Use a range like '1-1000', a comma-separated list like '22,80,443', or leave this out to automatically check the 1000 most commonly used ports."
},
"target": {
"type": "string",
"description": "The hostname (like 'example.com') or numeric IP address (like '93.184.216.34') you want to scan. Must be a real, reachable address."
},
"timeout": {
"type": "integer",
"description": "How many seconds the scan is allowed to run before giving up. Must be between 5 and 60. Defaults to 30 if left out."
},
"scan_type": {
"type": "string",
"description": "How to probe each port. The only supported value right now is 'tcp_connect', which tries to open a full connection - the same way a browser or app would. Defaults to 'tcp_connect' if left out."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"api_version",
"target",
"resolved_ip",
"scan_type",
"duration_ms",
"complete",
"ports_requested",
"ports_scanned",
"open_ports",
"closed_or_filtered_count",
"warning"
],
"properties": {
"target": {
"type": "string"
},
"warning": {
"type": "string"
},
"complete": {
"type": "boolean"
},
"scan_type": {
"type": "string"
},
"open_ports": {
"type": "array",
"items": {
"type": "object"
}
},
"api_version": {
"type": "string"
},
"duration_ms": {
"type": "integer"
},
"resolved_ip": {
"type": "string"
},
"ports_scanned": {
"type": "integer"
},
"ports_requested": {
"type": "integer"
},
"closed_or_filtered_count": {
"type": "integer"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-14 19:47Z
- Last indexed by Roundhouse
- 2026-09-25 04:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-13 18:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 29 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service TCP Port Scanner and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=TCP%20Port%20Scanner' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://port-scanner.underscoredone.com/scan, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.