Roundhouse

md.fastdb.in

Live gas prices and USD transfer costs across major EVM chains.

TradingLiveeip155:8453Exactvia facilitator:dexter
https://md.fastdb.in/pulse/gas
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.
$1.28
Verified settled volume
298 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x072F3a2bD93bB75b1Eb84a9E45D17a4F90a6D801

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.

Accepts

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

0.001USDC≈ $0.001 USD
on Base · exact scheme

Pay 0.001 USDC on Base to 0x072F…6D801. The signed payment is good for 1 minute.

Paid to
0x072F…6D801
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
1000 smallest units
Buys
Live gas on Ethereum, Base, Arbitrum, Optimism, Polygon — base fee, priority fee tiers, and USD transfer cost, straight from chain RPC.
Returns
application/json
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x072F3a2bD93bB75b1Eb84a9E45D17a4F90a6D801",
    "scheme": "exact",
    "network": "base",
    "mimeType": "application/json",
    "resource": "https://md.fastdb.in/pulse/gas",
    "description": "Live gas on Ethereum, Base, Arbitrum, Optimism, Polygon — base fee, priority fee tiers, and USD transfer cost, straight from chain RPC.",
    "outputSchema": {
      "input": {
        "body": {
          "chains": [
            "base",
            "ethereum"
          ]
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "discoverable": true
      },
      "output": {
        "type": "json",
        "example": {
          "at": "2026-07-17T15:00:00.000Z",
          "gas": {
            "base": {
              "chain": "base",
              "nativeUsd": 1818.32,
              "baseFeeGwei": 0.005,
              "blockNumber": 48755195,
              "priorityFee": {
                "fastGwei": 0.019,
                "slowGwei": 0.0001,
                "standardGwei": 0.0011
              },
              "gasPriceGwei": 0.006,
              "nativeSymbol": "ETH",
              "transferCostUsd": 0.0002291
            }
          },
          "chains": [
            "base"
          ]
        }
      }
    },
    "maxAmountRequired": "1000",
    "maxTimeoutSeconds": 60
  }
]

Provenance

Seen in the source catalog
2026-09-23 17:13Z
Last indexed by Roundhouse
2026-09-24 00:45Z
Last enriched (probe, favicon, geo)
2026-09-15 08:45Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 200
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. 32 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 md.fastdb.in 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=md.fastdb.in'
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://md.fastdb.in/pulse/gas, 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.