Roundhouse

api.m2mcent.com

Premium agentic endpoint for nb-iot-cellular-mcp.

OtherLiveeip155:8453Exactvia cdp
https://api.m2mcent.com/nb-iot-cellular-mcp/api/process
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 13 snapshots so far.
$203.29
Verified settled volume
1,025 settlements proven x402 by their on-chain EIP-3009 marker.
$0.180
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-14 08:07Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb04994fBcA786ae03ce3354fEd2435C2E04020eC

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

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.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment Required",
  "status": 402,
  "message": "Access to Execute nb-iot-cellular-mcp requires cryptographic micropayment settlement via x402 V2 on Base Mainnet or Polygon PoS.",
  "pricing": {
    "currency": "USDC",
    "price_usdc": "0.18",
    "amount_micro_usdc": "180000"
  },
  "protocol": "x402-v2"
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.18USDC≈ $0.18 USD
on Base · exact scheme

Pay 0.18 USDC on Base to 0xb049…020eC. The signed payment is good for 5 minutes.

Paid to
0xb049…020eC
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
180000 smallest units
The catalog’s raw entry
[
  {
    "id": "chal_m2mcent_546",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xb04994fBcA786ae03ce3354fEd2435C2E04020eC",
    "amount": "180000",
    "intent": "payment",
    "method": "x402",
    "scheme": "exact",
    "expires": 1786695138,
    "network": "eip155:8453",
    "request": {
      "url": "https://api.m2mcent.com/nb-iot-cellular-mcp/api/process",
      "method": "POST"
    },
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "name": "Execute nb-iot-cellular-mcp",
      "input": {
        "body": {
          "data": "example data"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "txHash": "0xMockTransactionHash1234567890abcdef",
          "success": true
        }
      },
      "description": "Premium agentic endpoint for nb-iot-cellular-mcp."
    },
    "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": {
              "required": [
                "data"
              ],
              "properties": {
                "data": {
                  "type": "string"
                }
              }
            },
            "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"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-14 08:07Z
Last indexed by Roundhouse
2026-09-06 00:40Z
Last enriched (probe, favicon, geo)
2026-09-10 03:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
Report

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. 13 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service api.m2mcent.com 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=api.m2mcent.com'
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://api.m2mcent.com/nb-iot-cellular-mcp/api/process, 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.