Roundhouse

Stride20k

Agent data gateway plus the live x402 market feed. Normalized, schema-stable JSON for crypto prices, DeFi TVL, on-chain DEX pools, gas, FX, US Treasury yields, US weather, WHOIS, DNS, email validation, web-page extraction, tech news, Wikipedia, npm/PyPI package health, ERC-20 token-risk scoring, and composed domain dossiers, plus x402 ecosystem analytics and metered LLM inference. Pay per call with USDC via the x402 protocol; no accounts, no API keys.

TradingLiveeip155:8453Exactvia cdp
https://gateway.stride20k.com/crypto/gas/:chain
Crypto
Calls · 30d
4↓ 14%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$1.62
Verified settled volume
65 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
4
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-08-30 12:06Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x552Cc4A10878C7F20574489D47184249657Ca3f6

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.

{
  "ok": false,
  "error": {
    "code": "PAYMENT_REQUIRED",
    "message": "Get current gas prices and EIP-1559 fee estimates for an EVM chain. Price: $0.002 (USDC via x402). Machine-readable catalog: /.well-known/x402.json",
    "retryable": true
  },
  "preview": {
    "note": "Example of the exact envelope a paid call returns.",
    "example": {
      "ok": true,
      "data": {
        "chain": "base",
        "gasPriceWei": "6000000",
        "gasPriceGwei": 0.006,
        "blocksSampled": 5,
        "nextBaseFeeGwei": 0.005,
        "priorityFeeGwei": {
          "p25": 0.0006,
          "p50": 0.0011,
          "p75": 0.003
        }
      },
      "meta": {
        "cached": false,
        "source": "on-chain (PublicNode/dRPC JSON-RPC)",
        "fetchedAt": "2026-07-04T00:00:00.000Z",
        "attribution": null
      },
      "endpoint": "/crypto/gas/:chain"
    }
  }
}

Accepts

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

0.002USDC≈ $0.002 USD
on Base · exact scheme

Pay 0.002 USDC on Base to 0x552C…Ca3f6. The signed payment is good for 1 minute.

Paid to
0x552C…Ca3f6
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
2000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x552Cc4A10878C7F20574489D47184249657Ca3f6",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "pathParams": {
          "chain": "base"
        },
        "queryParams": {}
      },
      "output": {
        "type": "json",
        "example": {
          "ok": true,
          "data": {
            "chain": "base",
            "gasPriceWei": "6000000",
            "gasPriceGwei": 0.006,
            "blocksSampled": 5,
            "nextBaseFeeGwei": 0.005,
            "priorityFeeGwei": {
              "p25": 0.0006,
              "p50": 0.0011,
              "p75": 0.003
            }
          },
          "meta": {
            "cached": false,
            "source": "on-chain (PublicNode/dRPC JSON-RPC)",
            "fetchedAt": "2026-07-04T00:00:00.000Z",
            "attribution": null
          },
          "endpoint": "/crypto/gas/:chain"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object",
              "required": [
                "chain"
              ],
              "properties": {
                "chain": {
                  "enum": [
                    "ethereum",
                    "base",
                    "polygon",
                    "arbitrum",
                    "optimism",
                    "bsc",
                    "avalanche"
                  ],
                  "type": "string",
                  "aliases": {
                    "1": "ethereum",
                    "10": "optimism",
                    "56": "bsc",
                    "137": "polygon",
                    "8453": "base",
                    "42161": "arbitrum",
                    "43114": "avalanche",
                    "op": "optimism",
                    "arb": "arbitrum",
                    "bnb": "bsc",
                    "eth": "ethereum",
                    "avax": "avalanche",
                    "matic": "polygon"
                  },
                  "missTrack": true,
                  "normalize": "lower",
                  "description": "Chain to query. Shorthands accepted: 1, 10, 56, 137, 8453, 42161, 43114, eth, arb, op, matic, avax, bnb."
                }
              }
            },
            "queryParams": {
              "type": "object",
              "properties": {}
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "required": [
                "ok",
                "endpoint",
                "data",
                "meta"
              ],
              "properties": {
                "ok": {
                  "type": "boolean",
                  "description": "true on success."
                },
                "data": {
                  "type": "object",
                  "required": [
                    "chain",
                    "gasPriceWei",
                    "gasPriceGwei"
                  ],
                  "properties": {
                    "chain": {
                      "type": "string",
                      "description": "Chain queried."
                    },
                    "gasPriceWei": {
                      "type": "string",
                      "description": "eth_gasPrice result in wei, as decimal string."
                    },
                    "gasPriceGwei": {
                      "type": "number",
                      "description": "eth_gasPrice in gwei."
                    },
                    "blocksSampled": {
                      "type": "integer",
                      "description": "Number of blocks in the fee-history sample."
                    },
                    "nextBaseFeeGwei": {
                      "type": "number",
                      "description": "Projected next-block base fee in gwei (EIP-1559)."
                    },
                    "priorityFeeGwei": {
                      "type": "object",
                      "description": "Average priority fee over last 5 blocks at p25/p50/p75, gwei."
                    }
                  }
                },
                "meta": {
                  "type": "object",
                  "required": [
                    "source",
                    "cached",
                    "fetchedAt"
                  ],
                  "properties": {
                    "cached": {
                      "type": "boolean",
                      "description": "Whether this response was served from cache."
                    },
                    "source": {
                      "type": "string",
                      "description": "Upstream source: on-chain (PublicNode/dRPC JSON-RPC)."
                    },
                    "fetchedAt": {
                      "type": "string",
                      "description": "ISO 8601 time the data was actually retrieved from the upstream."
                    },
                    "attribution": {
                      "type": [
                        "string",
                        "null"
                      ],
                      "description": "Licensing attribution when the source requires it."
                    }
                  }
                },
                "endpoint": {
                  "type": "string",
                  "description": "Always \"/crypto/gas/:chain\"."
                }
              }
            }
          }
        }
      }
    },
    "routeTemplate": "/crypto/gas/:chain"
  }
}

Provenance

Seen in the source catalog
2026-08-30 12:06Z
Last indexed by Roundhouse
2026-09-24 08:00Z
Last enriched (probe, favicon, geo)
2026-09-14 00:45Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 400
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. 30 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 Stride20k 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=Stride20k'
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://gateway.stride20k.com/crypto/gas/:chain, 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.