Roundhouse AI

signals.nsgoods.org

Atomic technical indicators (RSI, EMA20/50/200, MACD, ATR, Bollinger, volume) for any Kraken */USD pair and timeframe. Cheap high-frequency poll endpoint for AI trading agents (USDC on Base). Free preview: GET /signals/preview

OtherLiveeip155:8453Exactvia cdp
https://signals.nsgoods.org/indicators
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 22 snapshots so far.
$9.37
Verified settled volume
297 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
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 2026-09-12 17:01Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xc87a06DEE4c0E85912296002617120BBfd5EF990

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",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc87a06DEE4c0E85912296002617120BBfd5EF990",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxAmountRequired": "5000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signals.nsgoods.org/indicators",
    "mimeType": "application/json",
    "description": "Atomic technical indicators (RSI, EMA20/50/200, MACD, ATR, Bollinger, volume) for any Kraken */USD pair and timeframe. Cheap high-frequency poll endpoint for AI trading agents (USDC on Base). Free preview: GET /signals/preview"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "tf": "1h",
            "name": "rsi14",
            "pair": "BTC/USD"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "pair": "BTC/USD",
            "candle_ts": "2026-06-13T21:00:00",
            "timeframe": "1h",
            "indicators": {
              "macd": -42.3,
              "atr14": 215.6,
              "ema20": 64320.1,
              "ema50": 64510.2,
              "price": 64205.7,
              "rsi14": 38.54,
              "sma20": 64298,
              "bb_mid": 64298,
              "ema200": 63870.4,
              "volume": 1.2796,
              "bb_lower": 63715.9,
              "bb_upper": 64880.1,
              "macd_hist": -7.2,
              "macd_signal": -35.1
            },
            "generated_at": "2026-06-13T21:30:00+00:00"
          }
        }
      },
      "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",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [],
                "properties": {
                  "tf": {
                    "enum": [
                      "1m",
                      "5m",
                      "15m",
                      "30m",
                      "1h",
                      "4h",
                      "1d"
                    ],
                    "type": "string",
                    "default": "1h",
                    "description": "Timeframe of the candle series feeding the indicators."
                  },
                  "name": {
                    "type": "string",
                    "description": "Optional: return only one indicator (e.g. rsi14, ema50, macd_hist)."
                  },
                  "pair": {
                    "type": "string",
                    "default": "BTC/USD",
                    "description": "Kraken */USD pair, e.g. BTC/USD, ETH/USD."
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "pair",
                  "timeframe",
                  "indicators",
                  "generated_at"
                ],
                "properties": {
                  "pair": {
                    "type": "string"
                  },
                  "candle_ts": {
                    "type": "string"
                  },
                  "timeframe": {
                    "type": "string"
                  },
                  "indicators": {
                    "type": "object"
                  },
                  "generated_at": {
                    "type": "string",
                    "format": "date-time"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

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

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0xc87a…EF990. The signed payment is good for 5 minutes.

Paid to
0xc87a…EF990
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xc87a06DEE4c0E85912296002617120BBfd5EF990",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "tf": "1h",
          "name": "rsi14",
          "pair": "BTC/USD"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "pair": "BTC/USD",
          "candle_ts": "2026-06-13T21:00:00",
          "timeframe": "1h",
          "indicators": {
            "macd": -42.3,
            "atr14": 215.6,
            "ema20": 64320.1,
            "ema50": 64510.2,
            "price": 64205.7,
            "rsi14": 38.54,
            "sma20": 64298,
            "bb_mid": 64298,
            "ema200": 63870.4,
            "volume": 1.2796,
            "bb_lower": 63715.9,
            "bb_upper": 64880.1,
            "macd_hist": -7.2,
            "macd_signal": -35.1
          },
          "generated_at": "2026-06-13T21:30:00+00:00"
        }
      }
    },
    "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",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [],
              "properties": {
                "tf": {
                  "enum": [
                    "1m",
                    "5m",
                    "15m",
                    "30m",
                    "1h",
                    "4h",
                    "1d"
                  ],
                  "type": "string",
                  "default": "1h",
                  "description": "Timeframe of the candle series feeding the indicators."
                },
                "name": {
                  "type": "string",
                  "description": "Optional: return only one indicator (e.g. rsi14, ema50, macd_hist)."
                },
                "pair": {
                  "type": "string",
                  "default": "BTC/USD",
                  "description": "Kraken */USD pair, e.g. BTC/USD, ETH/USD."
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "required": [
                "pair",
                "timeframe",
                "indicators",
                "generated_at"
              ],
              "properties": {
                "pair": {
                  "type": "string"
                },
                "candle_ts": {
                  "type": "string"
                },
                "timeframe": {
                  "type": "string"
                },
                "indicators": {
                  "type": "object"
                },
                "generated_at": {
                  "type": "string",
                  "format": "date-time"
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-12 17:01Z
Last indexed by Roundhouse
2026-09-24 23:10Z
Last enriched (probe, favicon, geo)
2026-09-21 11:15Z
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. 22 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 signals.nsgoods.org 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=signals.nsgoods.org'
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://signals.nsgoods.org/indicators, 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.