# Music Production Calc – Tap Tempo BPM Calculator

> Music Production Calc – Tap Tempo BPM Calculator is a paid API for AI agents from music-production-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Calculates mean and median BPM from a sequence of tap timestamps in milliseconds, plus interval spread and jitter statistics.

## Facts

- Endpoint: GET https://music-production-calc.x402tookit.com/tap-timestamps?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/music-production-calc-tap-tempo-bpm-calculator-3e88fa4e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1x3fE5_vJXo-7KFe4YHcX

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability music-production-calc-tap-tempo-bpm-calculator-3e88fa4e
```

Example prompt: I tapped along to a song and recorded the timestamps: 0, 498, 1003, 1501, 2000, 2499 milliseconds — can you calculate the BPM from those taps and tell me the mean, median, and how much jitter there was?

## When to prefer this

Choose this endpoint when you have a sequence of raw tap timestamps in milliseconds and need statistically robust BPM estimates (both mean and median) along with timing jitter analysis — ideal for detecting tempo drift, validating rhythmic consistency, or syncing hardware to a live performance. Prefer this over simple two-point BPM calculators when you need spread and jitter metrics.

## Known failure modes

- Fewer than 3 taps provided — endpoint requires at least 3 timestamps
- More than 200 taps provided — exceeds maximum input size
- Timestamps are not strictly increasing — returns error or degraded result
- Non-numeric or malformed comma-separated values — parse error
- Single-tap or two-tap input cannot compute meaningful intervals

## How this service works

Tap tempo from tap timestamps in ms: mean and median BPM, interval spread and jitter percent.

## Output

Returns mean BPM, median BPM, BPM from first-to-last tap, a rounded BPM, all inter-tap intervals in ms, mean/median/min/max/stdev interval values, jitter percent, and tap count — giving a complete statistical picture of the tapped tempo.

## Request schema (JSON Schema)

```json
{
 "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",
     "required": [
      "taps"
     ],
     "properties": {
      "taps": {
       "type": "string",
       "description": "Tap times in milliseconds, increasing, comma separated: 0,500,1010,1490,2000 (3 to 200 taps)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "tapCount": {
       "type": [
        "null",
        "number"
       ]
      },
      "bpmRounded": {
       "type": [
        "null",
        "number"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "bpmFromMean": {
       "type": [
        "null",
        "number"
       ]
      },
      "intervalsMs": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "number"
       }
      },
      "bpmFromMedian": {
       "type": [
        "null",
        "number"
       ]
      },
      "jitterPercent": {
       "type": [
        "null",
        "number"
       ]
      },
      "maxIntervalMs": {
       "type": [
        "null",
        "number"
       ]
      },
      "minIntervalMs": {
       "type": [
        "null",
        "number"
       ]
      },
      "meanInterval
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/music-production-calc-tap-tempo-bpm-calculator-3e88fa4e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from music-production-calc.x402tookit.com](https://www.zero.xyz/host/music-production-calc.x402tookit.com/llms.txt)