diff --git a/skills/rudder-go-sdk/SKILL.md b/skills/rudder-go-sdk/SKILL.md
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@@ -0,0 +1,117 @@
+---
+name: rudder-go-sdk
+description: Use when working with the Rudder Go server SDK (package rudder, module hub.rudder.build/rudder/rudder-go-sdk) for server-side admin operations — players, wallet, inventory, storage, quests, leaderboards, webhook signature verification.
+---
+
+# Rudder Go server SDK
+
+Server-side admin SDK for the Rudder LiveOps platform. Covers the `/game/v1`
+admin surface, authenticated with `X-API-Key`. Module:
+`hub.rudder.build/rudder/rudder-go-sdk`, package `rudder`. Requires Go 1.21+.
+
+## Install
+
+The module is served from a self-hosted Gitea, bypassing proxy.golang.org:
+
+```bash
+go env -w GOPRIVATE=hub.rudder.build/*
+go get hub.rudder.build/rudder/rudder-go-sdk@latest
+```
+
+## Client init
+
+`AdminKey` is the per-project Admin Key from the dashboard
+(app.rudder.build → project → Settings). The key identifies the project; no
+separate project ID is needed. Keep it server-side only, never in game clients.
+
+```go
+import rudder "hub.rudder.build/rudder/rudder-go-sdk"
+
+client, err := rudder.New(rudder.Config{
+    AdminKey: os.Getenv("RUDDER_ADMIN_KEY"),
+    // BaseURL defaults to https://api.rudder.build
+    // Timeout defaults to 30s; HTTPClient optional
+})
+```
+
+`client` exposes services: `Players`, `Leaderboards`, `Wallet`, `Inventory`,
+`Quests`, `Storage`. All methods take `context.Context` first.
+
+Public types live in package `rudder` (aliases in `types.go`). The `models`
+package is generated wire format — never import it in application code and
+never edit it by hand (regenerate via `make generate-openapi` in
+liveops-gateway).
+
+## Batch-first mutation model
+
+All top-level mutating operations are batch-only. Request body is
+`{idempotencyKey?, items:[...]}` with `playerId` inside each item
+(leaderboard delete takes `{playerIds:[...]}`, project-storage delete
+`{types:[...]}`). Rules:
+
+- at most 100 items per batch
+- all-or-nothing in one transaction — one failing item fails the whole batch
+- one optional `IdempotencyKey` per batch; retrying with the same key is safe
+- errors report the index and playerId of the failing item
+
+Method naming is uniform: verb + entity (`List`/`Get`/`Submit`/`Update`/
+`Upsert`/`Delete`/`Adjust`/`History`).
+
+## Handles
+
+`client.Player(id)` and `client.Leaderboard(slug)` return handles without any
+HTTP request. Handles are sugar over the batch operations with n=1: the
+handle injects `playerID`/`slug` into a single-item batch and unwraps the
+first result.
+
+```go
+player := client.Player("p1")
+wallet, err := player.Wallet().Adjust(ctx, rudder.AdjustPlayerWalletParameters{
+    IdempotencyKey: "grant-001",
+    CurrencyCode:   "coins",
+    Amount:         100,
+    Reason:         "compensation",
+})
+
+board := client.Leaderboard("weekly")
+err = board.Submit(ctx, []rudder.LeaderboardScore{{PlayerID: "p1", Score: 1500}})
+```
+
+`client.Player(id)` exposes sub-handles `Wallet()`, `Inventory()`,
+`Storage()`, `Quests()` plus `Update`/`Ban`/`Unban`/`Delete`.
+`client.Leaderboard(slug)` exposes `List`/`Get`/`GetAround`/`Submit`/
+`Update`/`Delete`.
+
+## Top-level Storage vs PlayerHandle.Storage()
+
+`client.Storage` is the **global (project) storage** — shared key/value items
+keyed by `Type`, with permissions and versioning. Player storage is reachable
+**only** through `client.Player(id).Storage()` — per-player items keyed by
+`Type`. They are different backends with different item shapes; do not
+confuse them.
+
+## Errors
+
+All API failures return `*rudder.APIError` (`Status`, `Code`, `Message`,
+`RequestID`); use `errors.As`. Client-side misconfiguration returns
+`Code: "sdk/invalid-options"` (`rudder.ErrorCodeInvalidOptions`). Scenario
+engine codes surfaced in `Code` include `early_completion`, `forbidden`,
+`level_not_reached`, `node_not_active`, `objectives_incomplete`,
+`run_expired`, `run_not_active`, `scenario_not_active`, `unknown_run`.
+
+## Webhook verification
+
+```go
+if !rudder.VerifyWebhookSignature(secret, body, r.Header.Get("X-Signature")) {
+    // reject: signature is hex HMAC-SHA256 of the raw body
+}
+```
+
+## Reference (exact signatures per service area)
+
+- `reference/players.md` — list/get/verify-auth, batch update/ban/unban/delete, PlayerHandle
+- `reference/wallet.md` — batch adjust, history, PlayerWalletHandle
+- `reference/inventory.md` — batch adjust, list, PlayerInventoryHandle
+- `reference/storage.md` — project storage (top-level) and player storage (handle)
+- `reference/quests.md` — quest definitions list, batch reset/force-complete/force-claim, PlayerQuestsHandle
+- `reference/leaderboards.md` — definitions list, LeaderboardHandle entries
diff --git a/skills/rudder-go-sdk/reference/inventory.md b/skills/rudder-go-sdk/reference/inventory.md
new file mode 100644
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+++ b/skills/rudder-go-sdk/reference/inventory.md
@@ -0,0 +1,43 @@
+# Inventory
+
+Source: `inventory.go`, `player_inventory.go`. Types: `InventoryItem`, `InventoryList`, `InventoryAdjustment`.
+
+## Batch adjust
+
+```go
+func (s *InventoryService) Adjust(ctx context.Context, parameters AdjustInventoryParameters) ([]InventoryItem, error)
+type AdjustInventoryParameters struct {
+    IdempotencyKey string
+    Items          []InventoryAdjustment
+}
+// InventoryAdjustment: {PlayerID, Slug, Amount int64, Reason}
+// Negative Amount removes items. Returns updated items in item order.
+```
+
+## List
+
+```go
+func (s *InventoryService) List(ctx context.Context, playerID string, parameters ListInventoryParameters) (*InventoryList, error)
+type ListInventoryParameters struct {
+    Limit  int
+    Cursor *string
+}
+// InventoryList: {Items []InventoryItem, NextCursor string}
+// InventoryItem: {ID, Slug, Amount int64, UpdatedAt}
+```
+
+## PlayerInventoryHandle
+
+`client.Player(id).Inventory()`:
+
+```go
+func (h *PlayerInventoryHandle) Adjust(ctx context.Context, parameters AdjustPlayerInventoryParameters) (*InventoryItem, error)
+type AdjustPlayerInventoryParameters struct {
+    IdempotencyKey string
+    Slug           string
+    Amount         int64
+    Reason         string
+}
+
+func (h *PlayerInventoryHandle) List(ctx context.Context, parameters ListInventoryParameters) (*InventoryList, error)
+```
diff --git a/skills/rudder-go-sdk/reference/leaderboards.md b/skills/rudder-go-sdk/reference/leaderboards.md
new file mode 100644
index 0000000..86cde53
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+++ b/skills/rudder-go-sdk/reference/leaderboards.md
@@ -0,0 +1,54 @@
+# Leaderboards
+
+Source: `leaderboards.go` (definitions + batch entry mutations), `leaderboard.go` (handle).
+Types: `Leaderboard`, `LeaderboardList`, `LeaderboardScore`, `Rank`, `RankList`.
+
+## Definitions
+
+```go
+func (s *LeaderboardsService) List(ctx context.Context, parameters ListLeaderboardsParameters) (*LeaderboardList, error)
+type ListLeaderboardsParameters struct {
+    Limit  int
+    Cursor *string
+}
+// LeaderboardList: {Items []Leaderboard, NextCursor string}
+// Leaderboard: {Slug, Name, Metric, ResetPeriod, SortingOrder, MaxEntries int64}
+```
+
+## Batch entry mutations (service level)
+
+Note: leaderboard entry mutations do NOT take an IdempotencyKey — the generated
+batch request bodies carry only items/playerIds.
+
+```go
+func (s *LeaderboardsService) Submit(ctx context.Context, slug string, items []LeaderboardScore) error
+func (s *LeaderboardsService) Update(ctx context.Context, slug string, items []LeaderboardScore) error
+// LeaderboardScore: {PlayerID, Score float64}
+
+func (s *LeaderboardsService) Delete(ctx context.Context, slug string, playerIDs []string) error
+// body: {playerIds: [...]}
+```
+
+## LeaderboardHandle
+
+`client.Leaderboard(slug)` — no request at creation.
+
+```go
+func (h *LeaderboardHandle) List(ctx context.Context, parameters ListLeaderboardEntriesParameters) (*RankList, error)
+type ListLeaderboardEntriesParameters struct {
+    Limit  int
+    Cursor *string
+}
+// RankList: {Entries []Rank, NextCursor string}
+
+func (h *LeaderboardHandle) Get(ctx context.Context, playerID string) (*Rank, error)
+
+func (h *LeaderboardHandle) GetAround(ctx context.Context, playerID string, limit int) ([]Rank, error)
+// entries around the player's rank
+
+func (h *LeaderboardHandle) Submit(ctx context.Context, items []LeaderboardScore) error
+func (h *LeaderboardHandle) Update(ctx context.Context, items []LeaderboardScore) error
+func (h *LeaderboardHandle) Delete(ctx context.Context, playerIDs []string) error
+```
+
+`Rank`: `{PlayerID, PlayerName, Rank int64, Score float64}`.
diff --git a/skills/rudder-go-sdk/reference/players.md b/skills/rudder-go-sdk/reference/players.md
new file mode 100644
index 0000000..98512c6
--- /dev/null
+++ b/skills/rudder-go-sdk/reference/players.md
@@ -0,0 +1,86 @@
+# Players
+
+Source: `players.go`, `player.go`. Types: `types.go` (`Player`, `PlayerDetails`, `PlayerList`, `PlayerUpdate`, `PlayerBan`, `PlayerAuthVerification`).
+
+## Reads
+
+```go
+func (s *PlayersService) List(ctx context.Context, parameters ListPlayersParameters) (*PlayerList, error)
+type ListPlayersParameters struct {
+    Limit  int    // offset-based pagination
+    Offset int
+    Search string
+}
+// PlayerList: {Players []Player, Total int, Limit int, Offset int}
+
+func (s *PlayersService) Get(ctx context.Context, playerID string) (*PlayerDetails, error)
+// PlayerDetails: {Player Player, Wallets []WalletBalance, Inventory []InventoryItem,
+//                 Storages []PlayerStorage, WalletTransactions []WalletTransaction}
+
+func (s *PlayersService) VerifyAuth(ctx context.Context, accessToken string) (*PlayerAuthVerification, error)
+// Single (non-batch) call: POST /players/auth/verify.
+// PlayerAuthVerification: {PlayerID, ProjectID, Status} — Status is "active"/"banned"/"deleted".
+```
+
+## Batch mutations
+
+```go
+func (s *PlayersService) Update(ctx context.Context, parameters UpdatePlayersParameters) ([]Player, error)
+type UpdatePlayersParameters struct {
+    IdempotencyKey string
+    Items          []PlayerUpdate // {PlayerID, Nickname, Data json.RawMessage}
+}
+
+func (s *PlayersService) Ban(ctx context.Context, parameters BanPlayersParameters) ([]Player, error)
+type BanPlayersParameters struct {
+    IdempotencyKey string
+    Items          []PlayerBan // {PlayerID, Reason, BannedUntil string}
+}
+
+func (s *PlayersService) Unban(ctx context.Context, parameters UnbanPlayersParameters) ([]Player, error)
+type UnbanPlayersParameters struct {
+    IdempotencyKey string
+    PlayerIDs      []string
+}
+
+func (s *PlayersService) Delete(ctx context.Context, parameters DeletePlayersParameters) error
+type DeletePlayersParameters struct {
+    IdempotencyKey string
+    PlayerIDs      []string
+}
+```
+
+## PlayerHandle
+
+`client.Player(id)` — no request at creation.
+
+```go
+h.Wallet()    *PlayerWalletHandle
+h.Inventory() *PlayerInventoryHandle
+h.Storage()   *PlayerStorageHandle
+h.Quests()    *PlayerQuestsHandle
+
+func (h *PlayerHandle) Update(ctx context.Context, parameters UpdatePlayerParameters) (*Player, error)
+type UpdatePlayerParameters struct {
+    IdempotencyKey string
+    Nickname       string
+    Data           json.RawMessage
+}
+
+func (h *PlayerHandle) Ban(ctx context.Context, parameters BanPlayerParameters) (*Player, error)
+type BanPlayerParameters struct {
+    IdempotencyKey string
+    Reason         string
+    BannedUntil    string
+}
+
+func (h *PlayerHandle) Unban(ctx context.Context, idempotencyKey string) (*Player, error)
+func (h *PlayerHandle) Delete(ctx context.Context, idempotencyKey string) error
+```
+
+## Player fields
+
+`Player`: `ID`, `StableID`, `ProjectID`, `Nickname`, `Data json.RawMessage`,
+`Language`, `Region`, `PayerFlag bool`, `BanReason`, `BannedAt`,
+`BannedUntil`, `CreatedAt`, `UpdatedAt`, `LastSeen`, `DeletedAt` (all
+string unless noted).
diff --git a/skills/rudder-go-sdk/reference/quests.md b/skills/rudder-go-sdk/reference/quests.md
new file mode 100644
index 0000000..d7ee34c
--- /dev/null
+++ b/skills/rudder-go-sdk/reference/quests.md
@@ -0,0 +1,52 @@
+# Quests
+
+Source: `quests.go`, `player_quests.go`. Types: `Quest`, `QuestObjective`, `QuestReward`, `QuestList`, `PlayerQuest`, `PlayerQuestObjective`, `PlayerQuestRef`.
+
+## Quest definitions (catalog)
+
+```go
+func (s *QuestsService) List(ctx context.Context, parameters ListQuestsParameters) (*QuestList, error)
+type ListQuestsParameters struct {
+    Status *string // optional: "active" or "archived"
+    Limit  int
+    Cursor *string
+}
+// QuestList: {Items []Quest, NextCursor string}
+// Quest: {ID, Name, Status, NextQuestID, Objectives []QuestObjective, Rewards []QuestReward}
+// QuestObjective: {ID, Metric, Target int64}
+// QuestReward: {Amount int64, Currency, ItemID}
+```
+
+## Batch player-quest operations
+
+All three share the same parameters and return only `error`:
+
+```go
+func (s *QuestsService) Reset(ctx context.Context, parameters PlayerQuestsParameters) error
+func (s *QuestsService) ForceComplete(ctx context.Context, parameters PlayerQuestsParameters) error
+func (s *QuestsService) ForceClaim(ctx context.Context, parameters PlayerQuestsParameters) error
+
+type PlayerQuestsParameters struct {
+    IdempotencyKey string
+    Items          []PlayerQuestRef // {PlayerID, QuestID}
+}
+```
+
+## PlayerQuestsHandle
+
+`client.Player(id).Quests()`:
+
+```go
+func (h *PlayerQuestsHandle) List(ctx context.Context) ([]PlayerQuest, error)
+// PlayerQuest: {QuestID, Name, Status, Objectives []PlayerQuestObjective}
+// PlayerQuestObjective: {ObjectiveID, Current int64, Target int64}
+
+func (h *PlayerQuestsHandle) Reset(ctx context.Context, parameters PlayerQuestParameters) error
+func (h *PlayerQuestsHandle) ForceComplete(ctx context.Context, parameters PlayerQuestParameters) error
+func (h *PlayerQuestsHandle) ForceClaim(ctx context.Context, parameters PlayerQuestParameters) error
+
+type PlayerQuestParameters struct {
+    IdempotencyKey string
+    QuestID        string
+}
+```
diff --git a/skills/rudder-go-sdk/reference/storage.md b/skills/rudder-go-sdk/reference/storage.md
new file mode 100644
index 0000000..91d3481
--- /dev/null
+++ b/skills/rudder-go-sdk/reference/storage.md
@@ -0,0 +1,59 @@
+# Storage
+
+Source: `storage.go` (project storage, top-level), `player_storage.go` (player storage, handle only).
+Types: `ProjectStorage`, `ProjectStorageList`, `ProjectStorageInput`, `PlayerStorage`.
+
+Top-level `client.Storage` is **project (global) storage**. Player storage is reachable only via `client.Player(id).Storage()`.
+
+## Project storage (client.Storage)
+
+```go
+func (s *StorageService) List(ctx context.Context, parameters ListStorageParameters) (*ProjectStorageList, error)
+type ListStorageParameters struct {
+    Limit  int
+    Cursor string // plain string, not *string
+    Search string
+}
+// ProjectStorageList: {Items []ProjectStorage, NextCursor string}
+
+func (s *StorageService) Get(ctx context.Context, itemType string) (*ProjectStorage, error)
+
+func (s *StorageService) Upsert(ctx context.Context, parameters UpsertStorageParameters) error
+type UpsertStorageParameters struct {
+    IdempotencyKey string
+    Items          []ProjectStorageInput
+}
+// ProjectStorageInput: {Type, Data, ExpiresAt, ReadPermission, WritePermission}
+
+func (s *StorageService) Delete(ctx context.Context, parameters DeleteStorageParameters) error
+type DeleteStorageParameters struct {
+    IdempotencyKey string
+    Types          []string // batch delete by item types
+}
+```
+
+`ProjectStorage` (returned item): `{ID, Type, Data, Size int64, Version int64, ReadPermission, WritePermission, ExpiresAt, UpdatedAt}`.
+
+## Player storage (client.Player(id).Storage())
+
+```go
+func (h *PlayerStorageHandle) Get(ctx context.Context, storageType string) (*PlayerStorage, error)
+
+func (h *PlayerStorageHandle) Upsert(ctx context.Context, parameters UpsertPlayerStorageParameters) (*PlayerStorage, error)
+type UpsertPlayerStorageParameters struct {
+    IdempotencyKey string
+    Type           string
+    Data           string
+    ExpiresAt      string
+}
+
+func (h *PlayerStorageHandle) Delete(ctx context.Context, parameters DeletePlayerStorageParameters) error
+type DeletePlayerStorageParameters struct {
+    IdempotencyKey string
+    Type           string
+}
+```
+
+`PlayerStorage`: `{ID, PlayerID, Type, Data, ExpiresAt, UpdatedAt}`.
+
+The handle's Upsert/Delete send single-item batches to `PUT`/`DELETE /players/storage` — the same batch rules (idempotency key, all-or-nothing) apply.
diff --git a/skills/rudder-go-sdk/reference/wallet.md b/skills/rudder-go-sdk/reference/wallet.md
new file mode 100644
index 0000000..7599799
--- /dev/null
+++ b/skills/rudder-go-sdk/reference/wallet.md
@@ -0,0 +1,50 @@
+# Wallet
+
+Source: `wallet.go`, `player_wallet.go`. Types: `WalletBalance`, `WalletTransaction`, `WalletHistory`, `WalletAdjustment`.
+
+## Batch adjust
+
+```go
+func (s *WalletService) Adjust(ctx context.Context, parameters AdjustWalletParameters) ([]WalletBalance, error)
+type AdjustWalletParameters struct {
+    IdempotencyKey string
+    Items          []WalletAdjustment
+}
+// WalletAdjustment: {PlayerID, CurrencyCode, Amount int64, Reason}
+// Negative Amount subtracts. Returns updated balances in item order.
+```
+
+## History
+
+```go
+func (s *WalletService) History(ctx context.Context, playerID string, parameters WalletHistoryParameters) (*WalletHistory, error)
+type WalletHistoryParameters struct {
+    Currency *string // optional filter
+    Limit    int
+    Cursor   *string
+}
+// WalletHistory: {Entries []WalletTransaction, NextCursor string}
+// WalletTransaction: {ID, WalletID, PlayerID, CurrencyCode, Amount int64,
+//   BalanceBefore int64, BalanceAfter int64, Reason, Source,
+//   Metadata json.RawMessage, CreatedAt}
+```
+
+## PlayerWalletHandle
+
+`client.Player(id).Wallet()`:
+
+```go
+func (h *PlayerWalletHandle) Adjust(ctx context.Context, parameters AdjustPlayerWalletParameters) (*WalletBalance, error)
+type AdjustPlayerWalletParameters struct {
+    IdempotencyKey string
+    CurrencyCode   string
+    Amount         int64
+    Reason         string
+}
+
+func (h *PlayerWalletHandle) History(ctx context.Context, parameters WalletHistoryParameters) (*WalletHistory, error)
+```
+
+## WalletBalance fields
+
+`{ID, PlayerID, CurrencyCode, Balance int64, UpdatedAt}`.