コレクションのゲームと達成状況
const url = 'https://game.retrogather.com/rest/v1/getCollectionGames?collectionId=example&sortBy=title&sortOrder=asc';const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
try { const response = await fetch(url, options); const data = await response.json(); console.log(data);} catch (error) { console.error(error);}curl --request GET \ --url 'https://game.retrogather.com/rest/v1/getCollectionGames?collectionId=example&sortBy=title&sortOrder=asc' \ --header 'Authorization: Bearer <token>'PREMIUM. Collection games / コレクションの達成状況: games in one collection, with achievement calculated on this call. summary is the unfiltered collection (totalGames, achievedGames, achievementRate, isCompleted). Default sort is releaseDate asc (same as the app). game is always included (page capped at 100). Tag and platform collections honor excludeGameIds. achievedAt is a date (play end date) or a datetime (library registration / play update). IDs that cannot be name-resolved are returned as game: { gameId } only.
Arrays are comma-separated. Percent-encode query values; Japanese values are easier to send with POST JSON. Plans: PREMIUM. Scopes: library:read.
Authorizations
Section titled “Authorizations”Parameters
Section titled “ Parameters ”Query Parameters
Section titled “Query Parameters”Target collection
True = achieved only, false = not yet
Platform IDs (OR)
Genre ID from listGenres. A root ID matches the game’s genreId or genreSubId. A non-root ID matches titleKana using that genre’s taxonomy key.
Title, reading, or edition name
Release date from (inclusive, YYYY-MM-DD). Games without a release date are excluded.
Release date to (inclusive, YYYY-MM-DD). Games without a release date are excluded.
Asc or desc
Responses
Section titled “ Responses ”Tool result JSON (no MCP envelope). Delete previews also return 200 with confirmToken.
object
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Example
{ "code": "plan_required", "status": "PLANNED", "items": [ { "status": "added" } ]}Invalid_input (arguments, broken JSON body)
Entry errors (auth, routing, quota) use error; tool errors use code and message. Check retryable when present.
object
Examplegenerated
{ "error": "example", "code": "example", "message": "example", "retryable": true, "retryAfterSec": 1, "requestId": "example", "resetAt": "example", "remaining": 1, "scopes": [ "example" ], "upgradeUrl": "example"}Missing or invalid API key
Entry errors (auth, routing, quota) use error; tool errors use code and message. Check retryable when present.
object
Examplegenerated
{ "error": "example", "code": "example", "message": "example", "retryable": true, "retryAfterSec": 1, "requestId": "example", "resetAt": "example", "remaining": 1, "scopes": [ "example" ], "upgradeUrl": "example"}Insufficient_scope, plan_required, or access_suspended
Entry errors (auth, routing, quota) use error; tool errors use code and message. Check retryable when present.
object
Examplegenerated
{ "error": "example", "code": "example", "message": "example", "retryable": true, "retryAfterSec": 1, "requestId": "example", "resetAt": "example", "remaining": 1, "scopes": [ "example" ], "upgradeUrl": "example"}Target or tool not found
Entry errors (auth, routing, quota) use error; tool errors use code and message. Check retryable when present.
object
Examplegenerated
{ "error": "example", "code": "example", "message": "example", "retryable": true, "retryAfterSec": 1, "requestId": "example", "resetAt": "example", "remaining": 1, "scopes": [ "example" ], "upgradeUrl": "example"}Burst or daily quota exceeded. See resetAt.
Entry errors (auth, routing, quota) use error; tool errors use code and message. Check retryable when present.
object
Examplegenerated
{ "error": "example", "code": "example", "message": "example", "retryable": true, "retryAfterSec": 1, "requestId": "example", "resetAt": "example", "remaining": 1, "scopes": [ "example" ], "upgradeUrl": "example"}Headers
Section titled “Headers”Seconds
Unexpected server failure. Retrying the same call will not help.
Entry errors (auth, routing, quota) use error; tool errors use code and message. Check retryable when present.
object
Examplegenerated
{ "error": "example", "code": "example", "message": "example", "retryable": true, "retryAfterSec": 1, "requestId": "example", "resetAt": "example", "remaining": 1, "scopes": [ "example" ], "upgradeUrl": "example"}Temporary failure or maintenance. Retry after Retry-After.
Entry errors (auth, routing, quota) use error; tool errors use code and message. Check retryable when present.
object
Examplegenerated
{ "error": "example", "code": "example", "message": "example", "retryable": true, "retryAfterSec": 1, "requestId": "example", "resetAt": "example", "remaining": 1, "scopes": [ "example" ], "upgradeUrl": "example"}Headers
Section titled “Headers”Seconds