Integrate the MiniWebtool Data Transfer Rate Converter API into this project. ## Your task 1. Read the reference below. 2. Ask me where this belongs in the codebase if it is not obvious. 3. Write the integration in the language and style of the surrounding code: a small typed client function, errors handled, key read from the environment (never hard-coded, never committed). 4. Verify with `/dry-run` first, then exactly one live call. 5. Show me the diff and the live result. ## Credit budget — follow these exactly This API is metered. A live call costs 1 credit; the free tier includes 1,000 credits per month. Burning them during integration is the single most common way to waste this key. 1. **Do all wiring against `/dry-run`, which costs 0 credits.** It validates the payload for real and returns a sample result with the exact response shape. Iterate there until your request builds and your parsing works. 2. **Make at most ONE live `/run` call** — a single end-to-end confirmation once dry-run passes. Print the result, then stop. 3. **Never call the API from unit tests, examples, or a retry loop.** Assert against the sample response captured from `/dry-run` instead. 4. **On 4xx, fix the payload — do not retry.** The error body is RFC 7807 `application/problem+json` and says exactly what is wrong. 5. **On 429, honour `Retry-After`** and back off; do not tighten the loop. 6. **Read `X-MWT-Credits-Remaining`** on every response. If it drops below 50, stop making live calls and tell me. 7. If the integration needs repeated calls at runtime, **cache by input** — this tool is deterministic, so the same input always returns the same output. ## The API **Data Transfer Rate Converter** — Convert bandwidth between bps, Mbps, MB/s and binary variants, with an optional download-time estimate. - Live endpoint: `POST https://api.miniwebtool.com/v1/tools/data-transfer-rate-converter/run` — costs 1 credit - Dry run: `POST https://api.miniwebtool.com/v1/tools/data-transfer-rate-converter/dry-run` — costs 0 credits, same auth and validation - Auth: `Authorization: Bearer ` - Content type: `application/json` - Tool version: `2026-04-22` (output shape is stable within a major version) - Full machine-readable spec: `https://api.miniwebtool.com/v1/openapi.json` ### Request body | field | type | required | notes | |---|---|---|---| | `value` | float | no | rate to convert (default `100.0`) | | `from_unit` | str | no | one of: mbps, bps, kbps, gbps, tbps, byteps, kbyteps, mbyteps, gbyteps, tbyteps, kibps, mibps, gibps, kibyteps, mibyteps, gibyteps — mbps \| bps \| kbps \| gbps \| tbps \| byteps \| kbyteps \| mbyteps \| gbyteps \| tbyteps \| kibps \| mibps \| gibps \| kibyteps \| mibyteps \| gibyteps (default `mbps`) | | `to_unit` | str | no | one of: mbyteps, bps, kbps, mbps, gbps, tbps, byteps, kbyteps, gbyteps, tbyteps, kibps, mibps, gibps, kibyteps, gibyteps — mbyteps \| bps \| kbps \| mbps \| gbps \| tbps \| byteps \| kbyteps \| gbyteps \| tbyteps \| kibps \| mibps \| gibps \| kibyteps \| gibyteps (default `mbyteps`) | | `file_size_mb` | float | no | optional file size in MB for a download estimate (default `0`) | Example request body: ```json { "value": 100, "from_unit": "mbps", "to_unit": "mbyteps", "file_size_mb": 700 } ``` ### Response envelope ```json { "request_id": "req_01H…", "tool": "data-transfer-rate-converter", "tool_version": "2026-04-22", "credits_used": 1, "result": { "input_value": 100.0, "from_unit": "mbps", "from_unit_abbr": "Mbps", "to_unit": "mbyteps", "to_unit_abbr": "MB/s", "result": 12.5, "bits_per_second": 100000000.0, "bytes_per_second": 12500000.0, "all_units": { "bps": { "name": "Bits per second", "abbr": "bps", "kind": "bit", "value": 100000000.0 }, "kbps": { "name": "Kilobits per second", "abbr": "Kbps", "kind": "bit", "value": 100000.0 }, "mbps": { "name": "Megabits per second", "abbr": "Mbps", "kind": "bit", "value": 100.0 }, "gbps": { "name": "Gigabits per second", "abbr": "Gbps", "kind": "bit", "value": 0.1 }, "tbps": { "name": "Terabits per second", "abbr": "Tbps", "kind": "bit", "value": 0.0001 }, "byteps": { "name": "Bytes per second", "abbr": "B/s", "kind": "byte", "value": 12500000.0 }, "kbyteps": { "name": "Kilobytes per second", "abbr": "KB/s", "kind": "byte", "value": 12500.0 }, "mbyteps": { "name": "Megabytes per second", "abbr": "MB/s", "kind": "byte", "value": 12.5 }, "gbyteps": { "name": "Gigabytes per second", "abbr": "GB/s", "kind": "byte", "value": 0.0125 }, "tbyteps": { "name": "Terabytes per second", "abbr": "TB/s", "kind": "byte", "value": 1.25e-05 }, "kibps": { "name": "Kibibits per second", "abbr": "Kibps", "kind": "bit", "value": 97656.25 }, "mibps": { "name": "Mebibits per second", "abbr": "Mibps", "kind": "bit", "value": 95.3674 }, "gibps": { "name": "Gibibits per second", "abbr": "Gibps", "kind": "bit", "value": 0.0931323 }, "kibyteps": { "name": "Kibibytes per second", "abbr": "KiB/s", "kind": "byte", "value": 12207.0312 }, "mibyteps": { "name": "Mebibytes per second", "abbr": "MiB/s", "kind": "byte", "value": 11.9209 }, "gibyteps": { "name": "Gibibytes per second", "abbr": "GiB/s", "kind": "byte", "value": 0.0116415 } }, "download_estimate": { "file_size_mb": 700.0, "seconds": 56.0, "human": "56s" }, "note": "Networking uses decimal (1000-based) units; 1 byte = 8 bits." } } ``` `result` holds the tool output. Errors come back as `application/problem+json` with `type`, `title`, `status`, and `detail`. ### Getting a key If `MINIWEBTOOL_API_KEY` is not already in the environment, stop and ask me for one — do not sign up, scrape, or guess a key. Free keys: https://api.miniwebtool.com/dashboard/