magent

Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.

OtherLiveeip155:8453Exactvia cdp
BbsBergBalanceNeurologyCalculator
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 9 snapshots so far.
$13.75
Verified settled volume
2,750 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 2026-09-01 00:30Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x836Be278f1739fB4308091cD1852F7971Bc19Ee2

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.

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    "tags": [
      "bbs",
      "berg",
      "balance",
      "neurology",
      "calculator"
    ],
    "mimeType": "application/json",
    "description": "Berg 1992 Berg Balance Scale (BBS): fourteen caller-assigned integers 0-4 (sitting to standing through standing on one foot). Sum 0-56. magent does not observe. Berg 1992 printed no 0-20 wheelchair / 21-40 walking-with-assistance / 41-56 independent website bands. Not Timed Up and Go, not a diagnosis, and not a medical device.",
    "serviceName": "magent"
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            "tandem_stance": 0,
            "reaching_forward": 0,
            "sitting_to_standing": 0,
            "sitting_unsupported": 0,
            "standing_to_sitting": 0,
            "standing_eyes_closed": 0,
            "standing_on_one_foot": 0,
            "standing_unsupported": 0,
            "standing_feet_together": 0,
            "turning_to_look_behind": 0,
            "alternate_foot_on_stool": 0,
            "retrieving_object_from_floor": 0
          }
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              {
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              },
              {
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            ],
            "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
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            "required": [
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              "method"
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            "properties": {
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              "headers": {
                "type": "object",
                "additionalProperties": {
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              },
              "queryParams": {
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                "required": [
                  "sitting_to_standing",
                  "standing_unsupported",
                  "sitting_unsupported",
                  "standing_to_sitting",
                  "transfers",
                  "standing_eyes_closed",
                  "standing_feet_together",
                  "reaching_forward",
                  "retrieving_object_from_floor",
                  "turning_to_look_behind",
                  "turning_360",
                  "alternate_foot_on_stool",
                  "tandem_stance",
                  "standing_on_one_foot"
                ],
                "properties": {
                  "transfers": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 transfers (integer 0-4): 4 able to transfer safely with minor use of hands; 3 able to transfer safely definite need of hands; 2 able to transfer with verbal cuing and/or supervision; 1 needs one person to assist; 0 needs two people to assist or supervise to be safe. magent does not observe the patient."
                  },
                  "turning_360": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 turning 360 degrees (integer 0-4): 4 able to turn 360 degrees safely in 4 seconds or less; 3 able to turn 360 degrees safely one side only in 4 seconds or less; 2 able to turn 360 degrees safely but slowly; 1 needs close supervision or verbal cuing; 0 needs assistance while turning. magent does not observe the patient."
                  },
                  "tandem_stance": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 standing unsupported one foot in front (integer 0-4): 4 able to place foot tandem independently and hold 30 seconds; 3 able to place foot ahead of other independently and hold 30 seconds; 2 able to take small step independently and hold 30 seconds; 1 needs help to step but can hold 15 seconds; 0 loses balance while stepping or standing. magent does not observe the patient."
                  },
                  "reaching_forward": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 reaching forward with outstretched arm while standing (integer 0-4): 4 can reach forward confidently more than 25 cm (10 inches); 3 can reach forward more than 12 cm (5 inches) safely; 2 can reach forward more than 5 cm (2 inches) safely; 1 reaches forward but needs supervision; 0 loses balance while trying or requires external support. magent does not observe the patient."
                  },
                  "sitting_to_standing": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 sitting to standing (integer 0-4): 4 able to stand without using hands and stabilize independently; 3 able to stand independently using hands; 2 able to stand using hands after several tries; 1 needs minimal aid to stand or stabilize; 0 needs moderate or maximal assist to stand. magent does not observe the patient."
                  },
                  "sitting_unsupported": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 sitting unsupported, feet supported (integer 0-4): 4 able to sit safely and securely for 2 minutes; 3 able to sit 2 minutes under supervision; 2 able to sit 30 seconds; 1 able to sit 10 seconds; 0 unable to sit without support 10 seconds. magent does not observe the patient."
                  },
                  "standing_to_sitting": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 standing to sitting (integer 0-4): 4 sits safely with minimal use of hands; 3 controls descent by using hands; 2 uses back of legs against chair to control descent; 1 sits independently but has uncontrolled descent; 0 needs assistance to sit. magent does not observe the patient."
                  },
                  "standing_eyes_closed": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 standing unsupported with eyes closed (integer 0-4): 4 able to stand 10 seconds safely; 3 able to stand 10 seconds with supervision; 2 able to stand 3 seconds; 1 unable to keep eyes closed 3 seconds but stays standing; 0 needs help to keep from falling. magent does not observe the patient."
                  },
                  "standing_on_one_foot": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 standing on one foot (integer 0-4): 4 able to lift leg independently and hold more than 10 seconds; 3 able to lift leg independently and hold 5-10 seconds; 2 able to lift leg independently and hold at least 3 seconds; 1 tries to lift leg unable to hold 3 seconds but remains standing independently; 0 unable to try or needs assist to prevent fall. magent does not observe the patient."
                  },
                  "standing_unsupported": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 standing unsupported (integer 0-4): 4 able to stand safely for 2 minutes; 3 able to stand 2 minutes with supervision; 2 able to stand 30 seconds unsupported; 1 needs several tries to stand 30 seconds unsupported; 0 unable to stand 30 seconds unassisted. magent does not observe the patient."
                  },
                  "standing_feet_together": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 standing unsupported with feet together (integer 0-4): 4 able to place feet together independently and stand 1 minute safely; 3 able to place feet together independently and stand 1 minute with supervision; 2 able to place feet together independently but unable to hold 30 seconds; 1 needs help to attain position but able to stand 15 seconds; 0 needs help to attain position and unable to hold 15 seconds. magent does not observe the patient."
                  },
                  "turning_to_look_behind": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 turning to look behind over left and right shoulders while standing (integer 0-4): 4 looks behind from both sides with weight shift; 3 looks behind one side only other side shows less weight shift; 2 turns sideways only but maintains balance; 1 needs supervision when turning; 0 needs assist to keep from losing balance or falling. magent does not observe the patient."
                  },
                  "alternate_foot_on_stool": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 placing alternate foot on step or stool while standing unsupported (integer 0-4): 4 able to stand independently and safely and complete 8 steps in 20 seconds; 3 able to stand independently and complete 8 steps in more than 20 seconds; 2 able to complete 4 steps without aid with supervision; 1 able to complete more than 2 steps needs minimal assist; 0 needs assistance to keep from falling or unable to try. magent does not observe the patient."
                  },
                  "retrieving_object_from_floor": {
                    "type": "integer",
                    "description": "Caller-assigned Berg 1992 retrieving object from floor from a standing position (integer 0-4): 4 able to pick up slipper safely and easily; 3 able to pick up slipper but needs supervision; 2 unable to pick up but reaches 2-5 cm from slipper and keeps balance independently; 1 unable to pick up and needs supervision while trying; 0 unable to try or needs assist to keep from losing balance. magent does not observe the patient."
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
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            "properties": {
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              },
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              }
            }
          }
        }
      }
    }
  },
  "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 0x836B…19Ee2. The signed payment is good for 10 minutes.

USD Coin contract
0x8335…02913
Payment window
10 minutes
As published
5000 smallest units
The catalog’s raw entry
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Extensions

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              "transfers": 0,
              "turning_360": 0,
              "tandem_stance": 0,
              "reaching_forward": 0,
              "sitting_to_standing": 0,
              "sitting_unsupported": 0,
              "standing_to_sitting": 0,
              "standing_eyes_closed": 0,
              "standing_on_one_foot": 0,
              "standing_unsupported": 0,
              "standing_feet_together": 0,
              "turning_to_look_behind": 0,
              "alternate_foot_on_stool": 0,
              "retrieving_object_from_floor": 0
            },
            {
              "transfers": 0,
              "turning_360": 0,
              "tandem_stance": 0,
              "reaching_forward": 0,
              "sitting_to_standing": 0,
              "sitting_unsupported": 0,
              "standing_to_sitting": 0,
              "standing_eyes_closed": 0,
              "standing_on_one_foot": 0,
              "standing_unsupported": 0,
              "standing_feet_together": 0,
              "turning_to_look_behind": 0,
              "alternate_foot_on_stool": 0,
              "retrieving_object_from_floor": 0
            }
          ]
        },
        "type": "http",
        "method": "POST"
      },
      "output": {
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        "example": {
          "path": "/api/calc/berg_balance",
          "count": 2,
          "items": [
            {
              "score": 0,
              "formula": "berg_balance",
              "citation": {
                "id": "berg-1992",
                "pmid": "1468055",
                "title": "Measuring balance in the elderly: validation of an instrument",
                "source": "Can J Public Health. 1992;83 Suppl 2:S7-S11",
                "authors": "Berg KO, Wood-Dauphinee SL, Williams JI, Maki B"
              },
              "max_score": 56,
              "components": [
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                  "factor": "sitting_to_standing",
                  "points": 0,
                  "present": true
                },
                {
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                  "factor": "standing_unsupported",
                  "points": 0,
                  "present": true
                },
                {
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                  "factor": "sitting_unsupported",
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                  "present": true
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              ],
              "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
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              "score": 0,
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              "citation": {
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                  "points": 0,
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                  "factor": "retrieving_object_from_floor",
                  "points": 0,
                  "present": true
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                  "factor": "turning_to_look_behind",
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                  "present": true
                },
                {
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                  "factor": "turning_360",
                  "points": 0,
                  "present": true
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                {
                  "value": 0,
                  "factor": "alternate_foot_on_stool",
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                  "present": true
                },
                {
                  "value": 0,
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                  "points": 0,
                  "present": true
                },
                {
                  "value": 0,
                  "factor": "standing_on_one_foot",
                  "points": 0,
                  "present": true
                }
              ],
              "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
              "formula_expression": "Berg Balance Scale = sitting_to_standing + standing_unsupported + sitting_unsupported + standing_to_sitting + transfers + standing_eyes_closed + standing_feet_together + reaching_forward + retrieving_object_from_floor + turning_to_look_behind + turning_360 + alternate_foot_on_stool + tandem_stance + standing_on_one_foot; each caller-assigned 0-4; Berg 1992 fourteen items; max 56; no 0-20 / 21-40 / 41-56 wheelchair/assist/independent website bands"
            }
          ]
        }
      },
      "iconUrl": "https://api.magentlab.com/favicon.ico"
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    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
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      ],
      "properties": {
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          "required": [
            "type",
            "method"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "items"
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              "properties": {
                "items": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "sitting_to_standing",
                      "standing_unsupported",
                      "sitting_unsupported",
                      "standing_to_sitting",
                      "transfers",
                      "standing_eyes_closed",
                      "standing_feet_together",
                      "reaching_forward",
                      "retrieving_object_from_floor",
                      "turning_to_look_behind",
                      "turning_360",
                      "alternate_foot_on_stool",
                      "tandem_stance",
                      "standing_on_one_foot"
                    ],
                    "properties": {
                      "transfers": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 transfers (integer 0-4): 4 able to transfer safely with minor use of hands; 3 able to transfer safely definite need of hands; 2 able to transfer with verbal cuing and/or supervision; 1 needs one person to assist; 0 needs two people to assist or supervise to be safe. magent does not observe the patient."
                      },
                      "turning_360": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 turning 360 degrees (integer 0-4): 4 able to turn 360 degrees safely in 4 seconds or less; 3 able to turn 360 degrees safely one side only in 4 seconds or less; 2 able to turn 360 degrees safely but slowly; 1 needs close supervision or verbal cuing; 0 needs assistance while turning. magent does not observe the patient."
                      },
                      "tandem_stance": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 standing unsupported one foot in front (integer 0-4): 4 able to place foot tandem independently and hold 30 seconds; 3 able to place foot ahead of other independently and hold 30 seconds; 2 able to take small step independently and hold 30 seconds; 1 needs help to step but can hold 15 seconds; 0 loses balance while stepping or standing. magent does not observe the patient."
                      },
                      "reaching_forward": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 reaching forward with outstretched arm while standing (integer 0-4): 4 can reach forward confidently more than 25 cm (10 inches); 3 can reach forward more than 12 cm (5 inches) safely; 2 can reach forward more than 5 cm (2 inches) safely; 1 reaches forward but needs supervision; 0 loses balance while trying or requires external support. magent does not observe the patient."
                      },
                      "sitting_to_standing": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 sitting to standing (integer 0-4): 4 able to stand without using hands and stabilize independently; 3 able to stand independently using hands; 2 able to stand using hands after several tries; 1 needs minimal aid to stand or stabilize; 0 needs moderate or maximal assist to stand. magent does not observe the patient."
                      },
                      "sitting_unsupported": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 sitting unsupported, feet supported (integer 0-4): 4 able to sit safely and securely for 2 minutes; 3 able to sit 2 minutes under supervision; 2 able to sit 30 seconds; 1 able to sit 10 seconds; 0 unable to sit without support 10 seconds. magent does not observe the patient."
                      },
                      "standing_to_sitting": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 standing to sitting (integer 0-4): 4 sits safely with minimal use of hands; 3 controls descent by using hands; 2 uses back of legs against chair to control descent; 1 sits independently but has uncontrolled descent; 0 needs assistance to sit. magent does not observe the patient."
                      },
                      "standing_eyes_closed": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 standing unsupported with eyes closed (integer 0-4): 4 able to stand 10 seconds safely; 3 able to stand 10 seconds with supervision; 2 able to stand 3 seconds; 1 unable to keep eyes closed 3 seconds but stays standing; 0 needs help to keep from falling. magent does not observe the patient."
                      },
                      "standing_on_one_foot": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 standing on one foot (integer 0-4): 4 able to lift leg independently and hold more than 10 seconds; 3 able to lift leg independently and hold 5-10 seconds; 2 able to lift leg independently and hold at least 3 seconds; 1 tries to lift leg unable to hold 3 seconds but remains standing independently; 0 unable to try or needs assist to prevent fall. magent does not observe the patient."
                      },
                      "standing_unsupported": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 standing unsupported (integer 0-4): 4 able to stand safely for 2 minutes; 3 able to stand 2 minutes with supervision; 2 able to stand 30 seconds unsupported; 1 needs several tries to stand 30 seconds unsupported; 0 unable to stand 30 seconds unassisted. magent does not observe the patient."
                      },
                      "standing_feet_together": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 standing unsupported with feet together (integer 0-4): 4 able to place feet together independently and stand 1 minute safely; 3 able to place feet together independently and stand 1 minute with supervision; 2 able to place feet together independently but unable to hold 30 seconds; 1 needs help to attain position but able to stand 15 seconds; 0 needs help to attain position and unable to hold 15 seconds. magent does not observe the patient."
                      },
                      "turning_to_look_behind": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 turning to look behind over left and right shoulders while standing (integer 0-4): 4 looks behind from both sides with weight shift; 3 looks behind one side only other side shows less weight shift; 2 turns sideways only but maintains balance; 1 needs supervision when turning; 0 needs assist to keep from losing balance or falling. magent does not observe the patient."
                      },
                      "alternate_foot_on_stool": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 placing alternate foot on step or stool while standing unsupported (integer 0-4): 4 able to stand independently and safely and complete 8 steps in 20 seconds; 3 able to stand independently and complete 8 steps in more than 20 seconds; 2 able to complete 4 steps without aid with supervision; 1 able to complete more than 2 steps needs minimal assist; 0 needs assistance to keep from falling or unable to try. magent does not observe the patient."
                      },
                      "retrieving_object_from_floor": {
                        "type": "integer",
                        "description": "Caller-assigned Berg 1992 retrieving object from floor from a standing position (integer 0-4): 4 able to pick up slipper safely and easily; 3 able to pick up slipper but needs supervision; 2 unable to pick up but reaches 2-5 cm from slipper and keeps balance independently; 1 unable to pick up and needs supervision while trying; 0 unable to try or needs assist to keep from losing balance. magent does not observe the patient."
                      }
                    }
                  },
                  "maxItems": 25,
                  "minItems": 1
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "type": "string",
              "const": "POST"
            },
            "headers": {
              "type": "object",
              "additionalProperties": {
                "type": "string"
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-01 00:30Z
Last indexed by Roundhouse
2026-09-07 06:20Z
Last enriched (probe, favicon, geo)
2026-09-23 21:45Z
x402 version
2
Max timeout
600s
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. 9 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 magent 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=magent'
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.magentlab.com/api/calc/berg_balance, 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.