diff --git a/api/app/Http/Resources/Api/V1/Artist/ArtistContactResource.php b/api/app/Http/Resources/Api/V1/Artist/ArtistContactResource.php
new file mode 100644
index 00000000..11c4384e
--- /dev/null
+++ b/api/app/Http/Resources/Api/V1/Artist/ArtistContactResource.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Resources\Api\V1\Artist;
+
+use App\Models\ArtistContact;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @mixin ArtistContact
+ */
+final class ArtistContactResource extends JsonResource
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->id,
+            'artist_id' => $this->artist_id,
+            'name' => $this->name,
+            'email' => $this->email,
+            'phone' => $this->phone,
+            'role' => $this->role,
+            'is_primary' => (bool) $this->is_primary,
+            'receives_briefing' => (bool) $this->receives_briefing,
+            'receives_infosheet' => (bool) $this->receives_infosheet,
+        ];
+    }
+}
diff --git a/api/app/Http/Resources/Api/V1/Artist/ArtistEngagementResource.php b/api/app/Http/Resources/Api/V1/Artist/ArtistEngagementResource.php
new file mode 100644
index 00000000..d3a2778a
--- /dev/null
+++ b/api/app/Http/Resources/Api/V1/Artist/ArtistEngagementResource.php
@@ -0,0 +1,124 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Resources\Api\V1\Artist;
+
+use App\Enums\Artist\BumaHandledBy;
+use App\Models\ArtistEngagement;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @mixin ArtistEngagement
+ *
+ * Buma + VAT formulas (RFC v0.2 D26 — must match Session 5 client-side
+ * preview):
+ *
+ *   buma_amount    = fee × buma_percentage / 100
+ *                    IFF buma_applicable && buma_handled_by === Organisation
+ *                    ELSE 0
+ *
+ *   vat_grondslag  = fee + (buma_amount IF Organisation handles buma ELSE 0)
+ *
+ *   vat_amount     = vat_grondslag × vat_percentage / 100  IF vat_applicable
+ *                    ELSE 0
+ *
+ *   total_cost     = fee + buma_amount + vat_amount
+ *                  + Σ deal_breakdown[*].amount
+ */
+final class ArtistEngagementResource extends JsonResource
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        $fee = (float) ($this->fee_amount ?? 0);
+        $bumaPercentage = (float) ($this->buma_percentage ?? 0);
+        $vatPercentage = (float) ($this->vat_percentage ?? 0);
+
+        $bumaAmount = ($this->buma_applicable && $this->buma_handled_by === BumaHandledBy::Organisation)
+            ? round($fee * $bumaPercentage / 100, 2)
+            : 0.0;
+
+        $vatGrondslag = $fee + (
+            $this->buma_handled_by === BumaHandledBy::Organisation
+                ? $bumaAmount
+                : 0.0
+        );
+
+        $vatAmount = $this->vat_applicable
+            ? round($vatGrondslag * $vatPercentage / 100, 2)
+            : 0.0;
+
+        $breakdownTotal = 0.0;
+        foreach ((array) $this->deal_breakdown as $line) {
+            if (is_array($line) && isset($line['amount'])) {
+                $breakdownTotal += (float) $line['amount'];
+            }
+        }
+
+        $totalCost = round($fee + $bumaAmount + $vatAmount + $breakdownTotal, 2);
+
+        return [
+            'id' => $this->id,
+            'organisation_id' => $this->organisation_id,
+            'artist_id' => $this->artist_id,
+            'event_id' => $this->event_id,
+            'artist' => ArtistResource::make($this->whenLoaded('artist')),
+            'project_leader_id' => $this->project_leader_id,
+            'project_leader' => $this->whenLoaded('projectLeader', fn () => [
+                'id' => $this->projectLeader?->id,
+                'name' => trim(($this->projectLeader?->first_name ?? '').' '.($this->projectLeader?->last_name ?? '')),
+                'email' => $this->projectLeader?->email,
+            ]),
+            'booking_status' => [
+                'value' => $this->booking_status?->value,
+                'label' => $this->booking_status?->label(),
+            ],
+            'fee_amount' => $this->fee_amount,
+            'fee_currency' => $this->fee_currency,
+            'fee_type' => [
+                'value' => $this->fee_type?->value,
+                'label' => $this->fee_type?->label(),
+            ],
+            'buma_applicable' => (bool) $this->buma_applicable,
+            'buma_percentage' => $this->buma_percentage,
+            'buma_handled_by' => [
+                'value' => $this->buma_handled_by?->value,
+                'label' => $this->buma_handled_by?->label(),
+            ],
+            'vat_applicable' => (bool) $this->vat_applicable,
+            'vat_percentage' => $this->vat_percentage,
+            'deal_breakdown' => $this->deal_breakdown,
+            'deposit_percentage' => $this->deposit_percentage,
+            'deposit_due_date' => optional($this->deposit_due_date)->toIso8601String(),
+            'balance_due_date' => optional($this->balance_due_date)->toIso8601String(),
+            'payment_status' => [
+                'value' => $this->payment_status?->value,
+                'label' => $this->payment_status?->label(),
+            ],
+            'crew_count' => $this->crew_count,
+            'guests_count' => $this->guests_count,
+            'requested_at' => optional($this->requested_at)->toIso8601String(),
+            'option_expires_at' => optional($this->option_expires_at)->toIso8601String(),
+            'advance_open_from' => optional($this->advance_open_from)->toIso8601String(),
+            'advance_open_to' => optional($this->advance_open_to)->toIso8601String(),
+            'advancing_completed_count' => $this->advancing_completed_count,
+            'advancing_total_count' => $this->advancing_total_count,
+            'notes' => $this->notes,
+            'computed' => [
+                'buma_amount' => $bumaAmount,
+                'vat_grondslag' => $vatGrondslag,
+                'vat_amount' => $vatAmount,
+                'breakdown_total' => $breakdownTotal,
+                'total_cost' => $totalCost,
+            ],
+            'performances' => PerformanceResource::collection($this->whenLoaded('performances')),
+            'created_at' => optional($this->created_at)->toIso8601String(),
+            'updated_at' => optional($this->updated_at)->toIso8601String(),
+            'deleted_at' => optional($this->deleted_at)->toIso8601String(),
+        ];
+    }
+}
diff --git a/api/app/Http/Resources/Api/V1/Artist/ArtistResource.php b/api/app/Http/Resources/Api/V1/Artist/ArtistResource.php
new file mode 100644
index 00000000..3fb3dbb6
--- /dev/null
+++ b/api/app/Http/Resources/Api/V1/Artist/ArtistResource.php
@@ -0,0 +1,69 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Resources\Api\V1\Artist;
+
+use App\Enums\Artist\ArtistEngagementStatus;
+use App\Models\Artist;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @mixin Artist
+ */
+final class ArtistResource extends JsonResource
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        $lifetime = $this->engagements()
+            ->whereNotIn('booking_status', [
+                ArtistEngagementStatus::Cancelled->value,
+                ArtistEngagementStatus::Rejected->value,
+                ArtistEngagementStatus::Declined->value,
+            ])
+            ->count();
+
+        $upcoming = $this->engagements()
+            ->whereNotIn('booking_status', [
+                ArtistEngagementStatus::Cancelled->value,
+                ArtistEngagementStatus::Rejected->value,
+                ArtistEngagementStatus::Declined->value,
+            ])
+            ->whereHas('event', fn ($q) => $q->where('end_at', '>=', now()))
+            ->count();
+
+        return [
+            'id' => $this->id,
+            'organisation_id' => $this->organisation_id,
+            'name' => $this->name,
+            'slug' => $this->slug,
+            'default_genre_id' => $this->default_genre_id,
+            'default_genre' => GenreResource::make($this->whenLoaded('defaultGenre')),
+            'default_draw' => $this->default_draw,
+            'star_rating' => $this->star_rating,
+            'home_base_country' => $this->home_base_country,
+            'agent_company_id' => $this->agent_company_id,
+            'agent_company' => $this->whenLoaded(
+                'agentCompany',
+                fn () => [
+                    'id' => $this->agentCompany?->id,
+                    'name' => $this->agentCompany?->name,
+                    'handles_buma' => (bool) ($this->agentCompany?->handles_buma ?? false),
+                ],
+            ),
+            'notes' => $this->notes,
+            'contacts' => ArtistContactResource::collection($this->whenLoaded('contacts')),
+            'engagements_summary' => [
+                'lifetime_count' => $lifetime,
+                'upcoming_count' => $upcoming,
+            ],
+            'created_at' => optional($this->created_at)->toIso8601String(),
+            'updated_at' => optional($this->updated_at)->toIso8601String(),
+            'deleted_at' => optional($this->deleted_at)->toIso8601String(),
+        ];
+    }
+}
diff --git a/api/app/Http/Resources/Api/V1/Artist/GenreResource.php b/api/app/Http/Resources/Api/V1/Artist/GenreResource.php
new file mode 100644
index 00000000..5be38fab
--- /dev/null
+++ b/api/app/Http/Resources/Api/V1/Artist/GenreResource.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Resources\Api\V1\Artist;
+
+use App\Models\Genre;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @mixin Genre
+ */
+final class GenreResource extends JsonResource
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->id,
+            'organisation_id' => $this->organisation_id,
+            'name' => $this->name,
+            'color' => $this->color,
+            'sort_order' => $this->sort_order,
+            'is_active' => (bool) $this->is_active,
+            'created_at' => optional($this->created_at)->toIso8601String(),
+            'updated_at' => optional($this->updated_at)->toIso8601String(),
+        ];
+    }
+}
diff --git a/api/app/Http/Resources/Api/V1/Artist/PerformanceResource.php b/api/app/Http/Resources/Api/V1/Artist/PerformanceResource.php
new file mode 100644
index 00000000..cdb5d5ef
--- /dev/null
+++ b/api/app/Http/Resources/Api/V1/Artist/PerformanceResource.php
@@ -0,0 +1,109 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Resources\Api\V1\Artist;
+
+use App\Models\Performance;
+use App\Services\Artist\LaneResolver;
+use Carbon\CarbonImmutable;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @mixin Performance
+ */
+final class PerformanceResource extends JsonResource
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->id,
+            'engagement_id' => $this->engagement_id,
+            'event_id' => $this->event_id,
+            'stage_id' => $this->stage_id,
+            'lane' => (int) $this->lane,
+            'lane_resolved' => $this->resolveLane(),
+            'start_at' => optional($this->start_at)->toIso8601String(),
+            'end_at' => optional($this->end_at)->toIso8601String(),
+            'version' => (int) $this->version,
+            'notes' => $this->notes,
+            'warnings' => $this->computeWarnings(),
+            'engagement' => ArtistEngagementResource::make($this->whenLoaded('engagement')),
+            'stage' => StageResource::make($this->whenLoaded('stage')),
+            'created_at' => optional($this->created_at)->toIso8601String(),
+            'updated_at' => optional($this->updated_at)->toIso8601String(),
+            'deleted_at' => optional($this->deleted_at)->toIso8601String(),
+        ];
+    }
+
+    /**
+     * Computed via LaneResolver over the (stage, sub-event) cohort.
+     * For parked performances (stage_id = null) the persisted lane is
+     * surfaced as-is — the wachtrij is a flat list, not a lane grid.
+     */
+    private function resolveLane(): int
+    {
+        if ($this->stage_id === null) {
+            return (int) $this->lane;
+        }
+
+        $cohort = Performance::query()
+            ->where('stage_id', $this->stage_id)
+            ->where('event_id', $this->event_id)
+            ->get();
+
+        $resolved = app(LaneResolver::class)->resolve($cohort);
+
+        return $resolved[(string) $this->id] ?? (int) $this->lane;
+    }
+
+    /**
+     * RFC v0.2 D5 / D6 / D25 — overlap, B2B, capacity warnings.
+     * Naive implementation for Session 2; refined as the timetable
+     * frontend lands in Session 4.
+     *
+     * @return array<int, string>
+     */
+    private function computeWarnings(): array
+    {
+        $warnings = [];
+
+        if ($this->stage_id === null) {
+            return $warnings;
+        }
+
+        $start = CarbonImmutable::instance($this->start_at);
+        $end = CarbonImmutable::instance($this->end_at);
+
+        $peers = Performance::query()
+            ->where('stage_id', $this->stage_id)
+            ->where('event_id', $this->event_id)
+            ->where('id', '!=', $this->id)
+            ->get();
+
+        foreach ($peers as $other) {
+            $oStart = CarbonImmutable::instance($other->start_at);
+            $oEnd = CarbonImmutable::instance($other->end_at);
+
+            if ($start < $oEnd && $oStart < $end && (int) $other->lane === (int) $this->lane) {
+                $warnings[] = 'overlap';
+                break;
+            }
+        }
+
+        foreach ($peers as $other) {
+            $oEnd = CarbonImmutable::instance($other->end_at);
+            $oStart = CarbonImmutable::instance($other->start_at);
+            if ($oEnd->equalTo($start) || $oStart->equalTo($end)) {
+                $warnings[] = 'b2b';
+                break;
+            }
+        }
+
+        return array_values(array_unique($warnings));
+    }
+}
diff --git a/api/app/Http/Resources/Api/V1/Artist/StageResource.php b/api/app/Http/Resources/Api/V1/Artist/StageResource.php
new file mode 100644
index 00000000..b6d46f30
--- /dev/null
+++ b/api/app/Http/Resources/Api/V1/Artist/StageResource.php
@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Resources\Api\V1\Artist;
+
+use App\Models\Stage;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @mixin Stage
+ */
+final class StageResource extends JsonResource
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->id,
+            'event_id' => $this->event_id,
+            'name' => $this->name,
+            'color' => $this->color,
+            'capacity' => $this->capacity,
+            'sort_order' => $this->sort_order,
+            'stage_days' => $this->whenLoaded(
+                'stageDays',
+                fn () => $this->stageDays->pluck('event_id')->all(),
+            ),
+            'created_at' => optional($this->created_at)->toIso8601String(),
+            'updated_at' => optional($this->updated_at)->toIso8601String(),
+        ];
+    }
+}
diff --git a/api/app/Services/Artist/LaneResolver.php b/api/app/Services/Artist/LaneResolver.php
new file mode 100644
index 00000000..4811298c
--- /dev/null
+++ b/api/app/Services/Artist/LaneResolver.php
@@ -0,0 +1,70 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services\Artist;
+
+use App\Models\Performance;
+use Carbon\CarbonImmutable;
+use Illuminate\Support\Collection;
+
+/**
+ * RFC v0.2 D19 — server-side lane resolution on read.
+ *
+ * The persisted `Performance.lane` is the cascade-bump-stable lane:
+ * once a performance lands on lane N because of an earlier cascade,
+ * its `lane` stays at N until the user moves it. That keeps the visual
+ * order predictable across edits but it can leave gaps (lanes 0 and 2
+ * occupied while 1 is empty).
+ *
+ * `lane_resolved` is the compact display lane: a greedy lowest-non-
+ * conflicting assignment over the (stage, sub-event) group, sorted by
+ * start_at. The frontend (Session 4) ports the SAME algorithm so the
+ * client-side preview during a drag matches what the server would
+ * write.
+ */
+final class LaneResolver
+{
+    /**
+     * @param  iterable<Performance>  $performances  scoped to one
+     *                                               (stage_id, event_id)
+     *                                               group
+     * @return array<string, int> perf-id → resolved lane
+     */
+    public function resolve(iterable $performances): array
+    {
+        $list = Collection::make($performances)
+            ->sortBy([
+                fn (Performance $p): string => (string) $p->start_at,
+                fn (Performance $p): int => (int) $p->lane,
+            ])
+            ->values();
+
+        /** @var array<int, CarbonImmutable> $laneEnds */
+        $laneEnds = [];
+        $resolved = [];
+
+        foreach ($list as $perf) {
+            $start = CarbonImmutable::instance($perf->start_at);
+            $end = CarbonImmutable::instance($perf->end_at);
+
+            $assigned = null;
+            foreach ($laneEnds as $idx => $occupiedUntil) {
+                if ($start >= $occupiedUntil) {
+                    $assigned = $idx;
+                    $laneEnds[$idx] = $end;
+                    break;
+                }
+            }
+
+            if ($assigned === null) {
+                $assigned = count($laneEnds);
+                $laneEnds[$assigned] = $end;
+            }
+
+            $resolved[(string) $perf->id] = $assigned;
+        }
+
+        return $resolved;
+    }
+}