minRating int Lowest star rating to generate (inclusive).
Sentiment-coherent fake product reviews — 1–2★ complain, 3★ shrug, 4–5★ rave — with star-rating and date-range filters and full seed determinism.
Generated test data for fixtures and development
| Parameter | Type | Default & allowed | Description |
|---|---|---|---|
minRating | int | default: 1 allowed: 1 – 5 example: 4 | Lowest star rating to generate (inclusive). |
maxRating | int | default: 5 allowed: 1 – 5 example: 5 | Highest star rating to generate (inclusive). Must be ≥ minRating. |
from | date | example: 2026-01-01 | Earliest review date (YYYY-MM-DD, inclusive; times are truncated to the UTC day). Defaults to 365 days before today. Must be ≤ to. |
to | date | example: 2026-03-31 | Latest review date (YYYY-MM-DD, inclusive; times are truncated to the UTC day). Defaults to today (UTC). |
minRating int Lowest star rating to generate (inclusive).
maxRating int Highest star rating to generate (inclusive). Must be ≥ minRating.
from date Earliest review date (YYYY-MM-DD, inclusive; times are truncated to the UTC day). Defaults to 365 days before today. Must be ≤ to.
to date Latest review date (YYYY-MM-DD, inclusive; times are truncated to the UTC day). Defaults to today (UTC).
| Parameter | Type | Default & allowed | Description |
|---|---|---|---|
count | int | default: 10 allowed: 1 – 100 example: 3 | How many records to generate (1–100). |
seed | int | example: 42 | Deterministic output: the same seed always returns the same records. Omit for random (the used seed is echoed in meta.seed). |
fields | list | example: rating,title | Return only these fields (comma-separated). Mutually exclusive with 'exclude'. |
exclude | list | example: helpfulCount | Return all fields except these (comma-separated). |
format | enum | default: json allowed: json | ndjson | csv example: csv | Response format: json envelope, ndjson (one record per line) or csv. |
pretty | boolean | default: false example: true | Pretty-print the JSON response. |
unwrap | boolean | default: false example: true | Drop the envelope: return the raw array/object without data/meta wrapper. |
count int How many records to generate (1–100).
seed int Deterministic output: the same seed always returns the same records. Omit for random (the used seed is echoed in meta.seed).
fields list Return only these fields (comma-separated). Mutually exclusive with 'exclude'.
exclude list Return all fields except these (comma-separated).
format enum Response format: json envelope, ndjson (one record per line) or csv.
pretty boolean Pretty-print the JSON response.
unwrap boolean Drop the envelope: return the raw array/object without data/meta wrapper.
| Field | Type | Description | Example |
|---|---|---|---|
rating | integer | Star rating within minRating..maxRating. Unclamped distribution is J-shaped: ~40% 5★, ~20% 1★. | 5 |
title | string | Short headline built strictly from the rating's sentiment word pool. | Simply wonderful |
body | string | 2–3 sentence review text, sentiment-coherent with the rating: 4–5★ praise, 3★ lukewarm, 1–2★ complaints — never mixed. | This kit is outstanding. The battery life is brilliant. Overall, I would recommend it to anyone. |
author | string | Reviewer's full name. | Emily Carter |
date | string (YYYY-MM-DD) | Review date, uniformly distributed within from..to (inclusive). | 2026-03-14 |
verified | boolean | Verified-purchase flag (true for roughly 3 in 4 reviews). | true |
helpfulCount | integer | Helpful votes, 0–500, skewed low like real review pages. | 12 |
rating integer Star rating within minRating..maxRating. Unclamped distribution is J-shaped: ~40% 5★, ~20% 1★.
example: 5
title string Short headline built strictly from the rating's sentiment word pool.
example: Simply wonderful
body string 2–3 sentence review text, sentiment-coherent with the rating: 4–5★ praise, 3★ lukewarm, 1–2★ complaints — never mixed.
example: This kit is outstanding. The battery life is brilliant. Overall, I would recommend it to anyone.
author string Reviewer's full name.
example: Emily Carter
date string (YYYY-MM-DD) Review date, uniformly distributed within from..to (inclusive).
example: 2026-03-14
verified boolean Verified-purchase flag (true for roughly 3 in 4 reviews).
example: true
helpfulCount integer Helpful votes, 0–500, skewed low like real review pages.
example: 12
/api/reviews?count=10&seed=42 {
"data": [
{
"rating": 4,
"title": "The quality exceeded my expectations",
"body": "I am thoroughly impressed. I would recommend it to anyone. Overall, I absolutely love it.",
"author": "Kaylie Ziemann",
"date": "2026-02-17",
"verified": false,
"helpfulCount": 371
},
{
"rating": 1,
"title": "Simply cheap",
"body": "This product is terrible. It broke within the first week.",
"author": "Waino Friesen",
"date": "2026-02-25",
"verified": true,
"helpfulCount": 328
},
{
"rating": 5,
"title": "Simply outstanding",
"body": "I am thoroughly impressed. Everything about it feels superb.",
"author": "Mr. Hailee Steuber",
"date": "2025-08-06",
"verified": true,
"helpfulCount": 165
},
{
"rating": 1,
"title": "Awful kit",
"body": "The build feels flimsy and cheap. The material is awful. Overall, I had to ask for a refund.",
"author": "Otis Jacobson",
"date": "2025-08-28",
"verified": true,
"helpfulCount": 281
},
{
"rating": 5,
…
"generatedAt": "2026-07-29T08:13:22.000Z"
}
} /api/reviews?minRating=5&count=5&seed=7 {
"data": [
{
"rating": 5,
"title": "I would recommend it to anyone",
"body": "This accessory is superb. I would recommend it to anyone. Overall, it has been flawless in daily use.",
"author": "Bell Schimmel V",
"date": "2025-10-21",
"verified": true,
"helpfulCount": 485
},
{
"rating": 5,
"title": "Simply superb",
"body": "This kit is wonderful. The quality exceeded my expectations. Overall, I absolutely love it.",
"author": "Mr. Jermaine Torp",
"date": "2026-06-20",
"verified": true,
"helpfulCount": 91
},
{
"rating": 5,
"title": "Everything about it feels superb",
"body": "It has been flawless in daily use. The value for money is superb. Overall, I absolutely love it.",
"author": "Juliana Adams",
"date": "2026-07-03",
"verified": false,
"helpfulCount": 3
},
{
"rating": 5,
"title": "I absolutely love it",
"body": "Everything about it feels superb. I would recommend it to anyone. Overall, it has been flawless in daily use.",
"author": "Ms. Lila Bauch",
"date": "2026-01-13",
"verified": true,
"helpfulCount": 430
},
{
"rating": 5,
…
"generatedAt": "2026-07-29T08:13:22.000Z"
}
} /api/reviews?maxRating=2&from=2026-01-01&to=2026-03-31&count=8&seed=3 {
"data": [
{
"rating": 1,
"title": "Terrible item",
"body": "This item is flimsy. The build feels flimsy and cheap. Overall, I am deeply disappointed.",
"author": "Joana Kunde",
"date": "2026-03-30",
"verified": true,
"helpfulCount": 234
},
{
"rating": 2,
"title": "It is a complete waste of money",
"body": "This set is terrible. The packaging is poor. Overall, it is a complete waste of money.",
"author": "Molly Marquardt",
"date": "2026-02-11",
"verified": false,
"helpfulCount": 61
},
{
"rating": 1,
"title": "Simply useless",
"body": "This device is horrible. I returned it almost immediately.",
"author": "Cathy Emmerich",
"date": "2026-03-02",
"verified": true,
"helpfulCount": 3
},
{
"rating": 1,
"title": "It arrived defective",
"body": "It is a complete waste of money. The customer service is terrible.",
"author": "Ms. Deshaun Wolff",
"date": "2026-03-06",
"verified": true,
"helpfulCount": 55
},
{
"rating": 1,
…
"generatedAt": "2026-07-29T08:13:22.000Z"
}
} /api/reviews?minRating=3&maxRating=3&count=20&format=csv rating,title,body,author,date,verified,helpfulCount
3,The quality is average at best,This tool is middling. It is adequate for everyday use.,Kaylie Ziemann,2026-06-09,false,48
3,Simply adequate,"It does the job, but it is unremarkable. It is fine for casual use. Overall, it is decent for the price.",Waino Friesen,2025-08-28,false,24
3,Simply acceptable,It is decent for the price. The setup is adequate.,Mr. Hailee Steuber,2025-11-02,true,84
3,Okay kit,"This kit is fine. The finish is passable. Overall, it is decent for the price.",Otis Jacobson,2025-12-11,false,0
3,Simply average,"This tool is mediocre. It is adequate for everyday use. Overall, it is a fairly mediocre experience all round.",Melisa Oberbrunner-Funk,2025-11-22,true,31
3,Simply average,"This gadget is mediocre. It is okay overall, with a few quirks. Overall, it is adequate for everyday use.",Kayden Howell,2025-12-19,true,0
3,It is a fairly mediocre experience all round,"This gadget is average. The material is average. Overall, the quality is average at best.",Ms. Lucille Wunsch,2025-07-29,true,197
3,Simply mediocre,"It is decent for the price. The instruction manual is unremarkable. Overall, it is a fairly mediocre experience all round.",Joe Osinski,2025-08-06,true,156
3,It is decent for the price,"The quality is average at best. The customer service is passable. Overall, it is okay overall, with a few quirks.",Dorcas Wilkinson,2025-10-06,true,459
3,Adequate customer service,"This set is unremarkable. The build quality is unremarkable. Overall, it does the job, but it is unremarkable.",Mrs. Rubie Adams,2025-10-27,false,379
3,Unremarkable material,"This product is fine. It is passable, though middling in places. Overall, it is okay overall, with a few quirks.",Abdul O'Hara,2025-08-19,true,48
3,Simply passable,"This accessory is average. It is decent for the price. Overall, it is okay overall, with a few quirks.",Mr. Gus MacGyver,2026-02-14,true,152
3,Simply unremarkable,This accessory is middling. It is fine for casual use.,Diana Hamill,2026-06-10,true,102
3,Simply passable,"It is a fairly mediocre experience all round. It is adequate for everyday use. Overall, the quality is average at best.",Alexanne Lynch III,2025-09-09,true,100
3,Passable set,"It is adequate for everyday use. It is okay overall, with a few quirks.",Karine Moen-Pagac,2026-06-07,false,473
3,Decent device,"It is passable, though middling in places. The quality is average at best. Overall, it is decent for the price.",Sheri Pfannerstill,2025-12-27,true,25
3,Simply middling,"It does the job, but it is unremarkable. The finish is average. Overall, it is okay overall, with a few quirks.",Neal Olson,2025-09-29,true,180
3,Unremarkable setup,"It is passable, though middling in places. It is a fairly mediocre experience all round. Overall, it is fine for casual use.",Ken Runte,2025-12-29,true,188
3,Acceptable product,"It is a fairly mediocre experience all round. It is okay overall, with a few quirks.",Mr. Reagan Howell,2026-03-04,false,179
3,It is a fairly mediocre experience all round,"This kit is unremarkable. The design is fine. Overall, it is fine for casual use.",Susan Steuber,2026-05-29,true,441
Generates product reviews whose text actually matches the star rating. Every sentiment-bearing word is drawn from one of three disjoint word pools, so a 1★ review can never say love and a 5★ review can never mention a refund:
minRating/maxRating clamp the stars; within the allowed range, ratings follow the J-shaped distribution of real review pages (5★ most common, then a bump of 1★). from/to bound the review date and default to the past 365 days — the resolved range is echoed back in meta.params, and from later than to is a 400. verified is true for roughly 3 in 4 reviews and helpfulCount (0–500) is skewed low, like real listings.
Everything is fake but internally consistent, and with a seed the same query returns byte-identical reviews forever.
minRating/maxRating genuinely bound each rating, so you can test empty-state, all-negative or five-star-only layouts.
Yes — from/to constrain the date field exactly; combine with seed for a frozen review history.
Some are — verified is a per-record boolean, plus helpfulCount for sort demos. All of it is generated; no real customers were involved.
Fake e-commerce products with category-themed names, prices in real currencies (whole yen for JPY), valid EAN-13 barcodes, SKUs, ratings and image URLs.
Complete fake people — name, age-consistent birth date, email, phone, job and address — with working filters for gender, age range and email domain.
Fake movies with genre-flavored titles, release-year windows, genre-aware runtimes and ratings (animation is never R) and one-decimal scores.
Fake dishes from 12 cuisines with coherent ingredient lists, calories and spice levels — a real vegetarian filter that bans every meat ingredient.