Roundhouse

Coil Crypto Day Board

An AI stock scanner that commits every score before the outcome is known and audits itself in public. Read the board, feed your AI agent, or own the engine.

SearchLiveeip155:8453Exactvia cdp
https://coil.trade/api/crypto/day
Calls · 30d
11↓ 4.2%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$3.08
Verified settled volume
179 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.
11
Calls · 30d
Upstream's own call count for this endpoint, not ours.
4
Unique payers · 30d
Last called 2026-09-17 15:28Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x7B53524d5c5D29EfB8C1d128C56F62FE38Cd9476

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.

{
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "tag": "x402-global-challenge",
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7B53524d5c5D29EfB8C1d128C56F62FE38Cd9476",
      "amount": "5000",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://coil.trade/api/crypto/day",
      "description": "24/7 crypto day-state board — 81 Robinhood-tradable coins (BTC, ETH, SOL, XRP, DOGE…). Per coin: price, 24h/7d change, trend vs 20/50/200-day, ATR%, RS vs BTC, tape lights, volume z, room to the 20d high, UP/CHOP/DOWN state, ranks — PLUS day-trade grades: GO, FUEL and EFF vs the BTC anchor, SETUP shape and ROOM in bars. Publishes every ~5 minutes around the clock when the market moved. A state map, not a ranking. Research, not advice.",
      "networkCaip2": "eip155:8453",
      "maxAmountRequired": "5000",
      "maxTimeoutSeconds": 3600
    }
  ],
  "cadence": {
    "daily": "A fresh board every market morning, even when the market is shut.",
    "crypto": "The BTC/ETH book is evaluated on UTC daily closes, every calendar day including weekends; the crypto product payloads (coil-crypto, coil-crypto-gate) stamp the close they were evaluated on (signal_close_date).",
    "archive": "/api/board/asof is an immutable archive — one new date per session, never revised.",
    "guidance": "Poll https://coil.trade/api/board/state — FREE and unlimited. It returns TWO independent hashes: state_hash (regime, ladder, candidate set — holds for hours) and day_hash (the intraday day-board map: every row's lights, entry window, late flag and overhead level — turns over through the session). Buy a paid read only when the hash for what YOU trade changes; unchanged means that slice is MATERIALLY unchanged (prices, %-moves and timestamps still tick, so bytes may differ; movers/leaders/topvol re-rank on price and are covered by neither). If you buy /api/board/day, watch day_hash — state_hash will not tell you the day map moved. Every paid response also carries freshness.next_refresh_at.",
    "intraday": "Recomputed through the US market session on a ~5-minute tick. MEASURED over five sessions, successive publishes land a median of 6.5 minutes apart, 90% within ~12 minutes, occasionally ~15-18 (the tick alternates a full refetch with a lighter re-score, and it is best-effort, not an SLA). Poll the free state endpoint rather than a timer — every payload carries freshness."
  },
  "resource": {
    "url": "https://coil.trade/api/crypto/day",
    "mimeType": "application/json",
    "description": "24/7 crypto day-state board — 81 Robinhood-tradable coins (BTC, ETH, SOL, XRP, DOGE…). Per coin: price, 24h/7d change, trend vs 20/50/200-day, ATR%, RS vs BTC, tape lights, volume z, room to the 20d high, UP/CHOP/DOWN state, ranks — PLUS day-trade grades: GO, FUEL and EFF vs the BTC anchor, SETUP shape and ROOM in bars. Publishes every ~5 minutes around the clock when the market moved. A state map, not a ranking. Research, not advice.",
    "serviceName": "Coil Crypto Day Board"
  },
  "alternates": {
    "docs": "https://coil.trade/agents",
    "note": "No wallet? These are free and need no payment, no account, and no key.",
    "free_board": "https://coil.trade/api/board/free",
    "free_preview": "https://coil.trade/api/board/agent?preview=1",
    "human_checkout": "https://coil.trade/scanner",
    "free_mcp_server": "https://coil.trade/mcp",
    "free_mcp_install": "claude mcp add --transport http coil https://coil.trade/mcp",
    "free_change_check": "https://coil.trade/api/board/state"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {}
        },
        "output": {
          "type": "json",
          "example": {
            "rows": [
              {
                "sym": "SOL-USD",
                "name": "Solana",
                "rank": {
                  "rs_pct": 88,
                  "trend_pct": 93
                },
                "tape": {
                  "d1": "g",
                  "h1": "g",
                  "h4": "y",
                  "m5": "g"
                },
                "price": 212.4,
                "state": "UP",
                "trend": {
                  "d20": 1.9,
                  "d50": 6.2,
                  "d200": 24
                },
                "vol_z": 0.7,
                "atr_pct": 5.8,
                "room_pct": 1.4,
                "chg_7d_pct": -0.8,
                "rs_btc_20d": 4.2,
                "chg_24h_pct": 3.1
              }
            ],
            "anchor": {
              "sym": "BTC-USD",
              "d200": 8.4,
              "chg_24h_pct": -1.2
            },
            "regime": {
              "breadth": {
                "green_1h": 9,
                "universe": 29,
                "above_d50": 17,
                "above_d200": 21
              },
              "verdict": "…",
              "gate_asof": "<UTC close the daily gate was evaluated on>",
              "gate_mode": "RISK_ON"
            },
            "product": "coil-crypto-day",
            "universe": 29,
            "computed_at": "<ISO-8601 UTC — the 24/7 tick this board was computed on>",
            "reading_guide": "a STATE MAP, not a ranking — descriptive market structure with no forward-return claim"
          }
        }
      },
      "tags": [
        "crypto-day-trading",
        "crypto-state-map",
        "crypto-scanner",
        "altcoins",
        "bitcoin",
        "ethereum",
        "solana",
        "crypto-momentum",
        "relative-strength",
        "crypto-volatility",
        "24-7-market-data",
        "trading",
        "financial-data"
      ],
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {}
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "category": "financial-data",
      "discoverable": true
    },
    "x402-merchant": {
      "info": {
        "logo": "https://coil.trade/assets/img/icon-512.png",
        "name": "Coil",
        "website": "https://coil.trade",
        "categories": [
          "market-data",
          "trading-signals",
          "crypto-signals",
          "financial-data",
          "stock-scanner",
          "algorand",
          "x402",
          "x402-global-challenge"
        ]
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "name"
        ],
        "properties": {
          "logo": {
            "type": "string"
          },
          "name": {
            "type": "string"
          },
          "website": {
            "type": "string"
          },
          "categories": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        }
      }
    },
    "sign-in-with-x": {
      "info": {
        "uri": "https://coil.trade/api/crypto/day",
        "nonce": "50afa4dbb18d90eec8a0e894e0ad4185",
        "domain": "coil.trade",
        "version": "1",
        "issuedAt": "2026-09-23T20:45:22.292Z",
        "resources": [
          "https://coil.trade/api/crypto/day"
        ],
        "statement": "Sign in to Coil - free-tier board access for this wallet (25 calls/day on regime, indices, movers, crypto gate, crypto night, tradfi-risk, hold state). This signature proves address control only; no funds move.",
        "expirationTime": "2026-09-23T20:55:22.292Z"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "domain",
          "address",
          "uri",
          "version",
          "chainId",
          "type",
          "nonce",
          "issuedAt",
          "signature"
        ],
        "properties": {
          "uri": {
            "type": "string",
            "format": "uri"
          },
          "type": {
            "type": "string"
          },
          "nonce": {
            "type": "string"
          },
          "domain": {
            "type": "string"
          },
          "address": {
            "type": "string"
          },
          "chainId": {
            "type": "string"
          },
          "version": {
            "type": "string"
          },
          "issuedAt": {
            "type": "string",
            "format": "date-time"
          },
          "notBefore": {
            "type": "string",
            "format": "date-time"
          },
          "requestId": {
            "type": "string"
          },
          "resources": {
            "type": "array",
            "items": {
              "type": "string",
              "format": "uri"
            }
          },
          "signature": {
            "type": "string"
          },
          "statement": {
            "type": "string"
          },
          "expirationTime": {
            "type": "string",
            "format": "date-time"
          }
        }
      },
      "session": "one signed SIGN-IN-WITH-X header is a bearer session: replay it as-is across every free-tier endpoint until expirationTime (issuedAt + 10 min), then re-sign from any fresh 402. Quota: 25 served reads/day per address (tier.used_today in each 200); signing costs nothing and moves no funds.",
      "supportedChains": [
        {
          "type": "eip191",
          "chainId": "eip155:8453"
        },
        {
          "type": "ed25519",
          "chainId": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
        }
      ]
    }
  },
  "credibility": {
    "signal_audit": {
      "url": "https://coil.trade/api/board/signal-audit",
      "what": "Every score we ever committed, marked to market: forward returns of the top-decile and READY cohorts vs the board median and a sector-matched ETF control, per committed day, with n in the same sentence. Recompute it yourself from /api/board/asof plus any free OHLCV source. Published even when negative."
    },
    "engine_record": {
      "note": "Thin sample (54 sessions since 07-08). Engine-only and funding-adjusted; the v4 ledger reconciles 1:1 to the brokerage account. 1 session is held FLAT and not graded because the engine was not running (2026-08-18); 1 operator-placed trade is backed out by amount because the engine neither chose nor sized them; 2 further adjustments are backed out by amount (per-trade detail is deliberately not published); SPY and QQQ are unadjusted real returns over every session in the window. Percentages describe realized structure, not future returns.",
      "as_of": "2026-09-22",
      "window": "since inception",
      "qqq_pct": 5.06,
      "spy_pct": 3.75,
      "sessions": 54,
      "engine_pct": -0.56,
      "reconcile_note": "Same record as https://coil.trade/api/perf — windows there are dated and session-counted; free MCP tools serve a one-day-older copy of the same block."
    },
    "what_the_proof_is": "Every published day is committed as a sha256 BEFORE the outcome is known, append-only, with a recipe that reproduces byte-identically in Python and JavaScript. You can check that today's scores were not edited after the fact.",
    "payment_conformance": {
      "by": "CONNSKILL x402 conformance suite — a third party, not us",
      "checks": "malformed signature, wrong recipient, wrong asset, underpayment, wrong network, expired and not-yet-valid authorizations, replayed nonce, spoofed domain version and chain id, challenge present",
      "verify": "https://agent.connskill.com/v1/conformance?origin=coil.trade"
    },
    "verify_before_you_pay": {
      "record": "https://coil.trade/api/perf",
      "commitments": "https://coil.trade/api/board/proof",
      "free_sample": "https://coil.trade/api/board/agent?preview=1",
      "free_full_day": "https://coil.trade/api/board/asof?sample=1",
      "free_full_day_note": "One complete committed day (~565 names), free — the oldest date in the append-only log, carrying the committed triple per name (opp_pct, entry_q, hold_q): exactly the fields the sha256 commits, not the full paid column set. Diff it against your own scanner. If your replica matches, don't pay us."
    }
  },
  "other_rails": "Algorand (USDCa, fee-sponsored — zero ALGO needed; both CAIP-2 spellings served; Global x402 Challenge tagged) and Solana are in the base64 PAYMENT-REQUIRED header. Clients: @x402/avm, @x402/svm. Docs: https://coil.trade/agents",
  "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 0x7B53…d9476. The signed payment is good for 1 hour.

Paid to
0x7B53…d9476
USD Coin contract
0x8335…02913
Payment window
1 hour
As published
5000 smallest units
5000units
on algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8= · exact scheme

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
LYIVIU…VTZM4
Token contract
31566704
Payment window
1 hour
5000units
on algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k · exact scheme

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
LYIVIU…VTZM4
Token contract
31566704
Payment window
1 hour
5000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

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
5HGara…6Ew2N
Token contract
EPjFWd…TDt1v
Payment window
1 hour
0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0x7B53…d9476. The signed payment is good for 168 hours.

Paid to
0x7B53…d9476
USD Coin contract
0x8335…02913
Payment window
168 hours
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "tag": "x402-global-challenge",
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x7B53524d5c5D29EfB8C1d128C56F62FE38Cd9476",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 3600
  },
  {
    "asset": "31566704",
    "extra": {
      "tag": "x402-global-challenge",
      "name": "USDC",
      "decimals": 6,
      "feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
    },
    "payTo": "LYIVIUSN3FAFIC2NUN6UYU2VN764U6YTCPTIX2O6EWYYU5WHAJHYMVTZM4",
    "amount": "5000",
    "scheme": "exact",
    "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
    "maxTimeoutSeconds": 3600
  },
  {
    "asset": "31566704",
    "extra": {
      "tag": "x402-global-challenge",
      "name": "USDC",
      "decimals": 6,
      "feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
    },
    "payTo": "LYIVIUSN3FAFIC2NUN6UYU2VN764U6YTCPTIX2O6EWYYU5WHAJHYMVTZM4",
    "amount": "5000",
    "scheme": "exact",
    "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k",
    "maxTimeoutSeconds": 3600
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "name": "USDC",
      "decimals": 6,
      "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
    },
    "payTo": "5HGarauHaGFynzwNBqLkKcQ4LFR4UCXKZE7bJuP6Ew2N",
    "amount": "5000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 3600
  },
  {
    "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
    "extra": {
      "name": "GatewayWalletBatched",
      "version": "1",
      "verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee"
    },
    "payTo": "0x7B53524d5c5D29EfB8C1d128C56F62FE38Cd9476",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 604800
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {}
      },
      "output": {
        "type": "json",
        "example": {
          "rows": [
            {
              "sym": "SOL-USD",
              "name": "Solana",
              "rank": {
                "rs_pct": 88,
                "trend_pct": 93
              },
              "tape": {
                "d1": "g",
                "h1": "g",
                "h4": "y",
                "m5": "g"
              },
              "price": 212.4,
              "state": "UP",
              "trend": {
                "d20": 1.9,
                "d50": 6.2,
                "d200": 24
              },
              "vol_z": 0.7,
              "atr_pct": 5.8,
              "room_pct": 1.4,
              "chg_7d_pct": -0.8,
              "rs_btc_20d": 4.2,
              "chg_24h_pct": 3.1
            }
          ],
          "anchor": {
            "sym": "BTC-USD",
            "d200": 8.4,
            "chg_24h_pct": -1.2
          },
          "regime": {
            "breadth": {
              "green_1h": 9,
              "universe": 29,
              "above_d50": 17,
              "above_d200": 21
            },
            "verdict": "…",
            "gate_asof": "<UTC close the daily gate was evaluated on>",
            "gate_mode": "RISK_ON"
          },
          "product": "coil-crypto-day",
          "universe": 29,
          "computed_at": "<ISO-8601 UTC — the 24/7 tick this board was computed on>",
          "reading_guide": "a STATE MAP, not a ranking — descriptive market structure with no forward-return claim"
        }
      }
    },
    "tags": [
      "crypto-day-trading",
      "crypto-state-map",
      "crypto-scanner",
      "altcoins",
      "bitcoin",
      "ethereum",
      "solana",
      "crypto-momentum",
      "relative-strength",
      "crypto-volatility",
      "24-7-market-data",
      "trading",
      "financial-data"
    ],
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {}
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    },
    "category": "financial-data",
    "discoverable": true
  },
  "x402-merchant": {
    "info": {
      "logo": "https://coil.trade/assets/img/icon-512.png",
      "name": "Coil",
      "website": "https://coil.trade",
      "categories": [
        "market-data",
        "trading-signals",
        "crypto-signals",
        "financial-data",
        "stock-scanner",
        "algorand",
        "x402",
        "x402-global-challenge"
      ]
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "name"
      ],
      "properties": {
        "logo": {
          "type": "string"
        },
        "name": {
          "type": "string"
        },
        "website": {
          "type": "string"
        },
        "categories": {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      }
    }
  },
  "sign-in-with-x": {
    "info": {
      "uri": "https://coil.trade/api/crypto/day",
      "nonce": "45f3d246e8ba980e96dd5bdb9d8122c9",
      "domain": "coil.trade",
      "version": "1",
      "issuedAt": "2026-09-17T15:28:14.263Z",
      "resources": [
        "https://coil.trade/api/crypto/day"
      ],
      "statement": "Sign in to Coil - free-tier board access for this wallet (25 calls/day on regime, indices, movers, crypto gate, crypto night, tradfi-risk, hold state). This signature proves address control only; no funds move.",
      "expirationTime": "2026-09-17T15:38:14.263Z"
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "domain",
        "address",
        "uri",
        "version",
        "chainId",
        "type",
        "nonce",
        "issuedAt",
        "signature"
      ],
      "properties": {
        "uri": {
          "type": "string",
          "format": "uri"
        },
        "type": {
          "type": "string"
        },
        "nonce": {
          "type": "string"
        },
        "domain": {
          "type": "string"
        },
        "address": {
          "type": "string"
        },
        "chainId": {
          "type": "string"
        },
        "version": {
          "type": "string"
        },
        "issuedAt": {
          "type": "string",
          "format": "date-time"
        },
        "notBefore": {
          "type": "string",
          "format": "date-time"
        },
        "requestId": {
          "type": "string"
        },
        "resources": {
          "type": "array",
          "items": {
            "type": "string",
            "format": "uri"
          }
        },
        "signature": {
          "type": "string"
        },
        "statement": {
          "type": "string"
        },
        "expirationTime": {
          "type": "string",
          "format": "date-time"
        }
      }
    },
    "session": "one signed SIGN-IN-WITH-X header is a bearer session: replay it as-is across every free-tier endpoint until expirationTime (issuedAt + 10 min), then re-sign from any fresh 402. Quota: 25 served reads/day per address (tier.used_today in each 200); signing costs nothing and moves no funds.",
    "supportedChains": [
      {
        "type": "eip191",
        "chainId": "eip155:8453"
      },
      {
        "type": "ed25519",
        "chainId": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
      }
    ]
  }
}

Provenance

Seen in the source catalog
2026-09-17 15:28Z
Last indexed by Roundhouse
2026-09-24 07:20Z
Last enriched (probe, favicon, geo)
2026-09-23 20:45Z
x402 version
2
Max timeout
3600s
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. 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 Coil Crypto Day Board 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=Coil%20Crypto%20Day%20Board'
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://coil.trade/api/crypto/day, 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.