{
  "x402Version": 2,
  "id": 13732,
  "slug": "13732",
  "resource": "https://music.openverbs.com/v1/chord",
  "description": "Build a chord from a root note and quality (major, minor, dim, aug, maj7, min7, dom7, dim7, half-dim7, sus2, sus4, maj6, min6). Notes are spelled by stacked thirds (C dom7 → C E G Bb). Returns the note names, MIDI numbers and semitone intervals.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "2000",
      "maxTimeoutSeconds": 300
    }
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  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "quality": "major",
            "root": "example"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "additionalProperties": false,
                "properties": {
                  "quality": {
                    "description": "Chord quality.",
                    "enum": [
                      "major",
                      "minor",
                      "dim",
                      "aug",
                      "maj7",
                      "min7",
                      "dom7",
                      "dim7",
                      "half-dim7",
                      "sus2",
                      "sus4",
                      "maj6",
                      "min6"
                    ],
                    "type": "string"
                  },
                  "root": {
                    "description": "Root note, e.g. \"C4\".",
                    "maxLength": 8,
                    "minLength": 1,
                    "type": "string"
                  }
                },
                "required": [
                  "root",
                  "quality"
                ],
                "type": "object"
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              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          }
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        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "music.openverbs.com",
  "lastUpdated": "2026-09-06T08:16:17.604Z",
  "quality": {
    "calls30d": 3,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-06T08:16:17.444Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "music.openverbs.com",
    "manifest_name": "music.openverbs.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}