diff --git a/README.md b/README.md
index 075365a..c8999a2 100644
--- a/README.md
+++ b/README.md
@@ -1348,6 +1348,28 @@ cliente en vez de comprobar nombres de rol.
 
 Quien no tenga `pages.publish` solo ve páginas publicadas en el listado.
 
+### Lotes e importación
+
+```
+POST   /api/v1/batch              hasta 50 operaciones {method, path, body}; atomic
+POST   /api/v1/import/{tipo}      filas JSON (rows) o CSV (file); match, atomic, dry_run
+```
+
+Cada operación de un lote pasa por el kernel HTTP como una petición propia con
+las credenciales de quien llama: se valida, se autoriza, cuenta para el límite
+de peticiones y responde igual que si llegara sola, así que un lote no puede
+hacer nada que sus operaciones no pudieran. [`BatchRunner`](app/Support/Batch/BatchRunner.php)
+no sabe qué es una página, y es justo lo que lo hace seguro. Con `atomic` va en
+una transacción y se para en el primer fallo deshaciéndolo todo; lo que ya salió
+de la base (un trabajo en cola, un aviso) no se deshace.
+
+La importación convierte filas en esas mismas llamadas: con `id`, o con el
+campo de `match` (`slug`, `name`, `full_name`) apuntando a una ficha que existe,
+actualiza; si no, crea. En CSV, `title.es` rellena el título en castellano, una
+lista se escribe `1|2|3`, `true`/`false`/`null` son lo que dicen y una celda
+vacía se omite en vez de borrar lo que hubiera. Por defecto es todo o nada, y
+`dry_run` lo comprueba todo sin guardar nada.
+
 ### Búsqueda
 
 `GET /api/public/v1/search?q=…` busca en lo que la web enseña —páginas,
diff --git a/app/Http/Controllers/Api/V1/BatchController.php b/app/Http/Controllers/Api/V1/BatchController.php
new file mode 100644
index 0000000..4cbebf7
--- /dev/null
+++ b/app/Http/Controllers/Api/V1/BatchController.php
@@ -0,0 +1,99 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers\Api\V1;
+
+use App\Http\Controllers\Controller;
+use App\Support\AdminContent;
+use App\Support\Batch\BatchRunner;
+use App\Support\Batch\Importer;
+use Closure;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Illuminate\Validation\Rule;
+
+/**
+ * Several calls in one: a batch of any admin operations, and importing rows
+ * of one kind of record from JSON or CSV.
+ */
+class BatchController extends Controller
+{
+    public function batch(Request $request, BatchRunner $runner): JsonResponse
+    {
+        $data = $request->validate([
+            'operations' => ['required', 'array', 'min:1', 'max:'.BatchRunner::MAX_OPERATIONS],
+            'operations.*.method' => ['required', Rule::in(['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'get', 'post', 'put', 'patch', 'delete'])],
+            'operations.*.path' => [
+                'required',
+                'string',
+                'max:500',
+                function (string $attribute, mixed $value, Closure $fail): void {
+                    if (! is_string($value) || ! BatchRunner::allows($value)) {
+                        $fail(__('rules.batch.path'));
+                    }
+                },
+            ],
+            'operations.*.body' => ['sometimes', 'nullable', 'array'],
+            'atomic' => ['sometimes', 'boolean'],
+        ]);
+
+        $outcome = $runner->run($request, $data['operations'], atomic: $request->boolean('atomic'));
+
+        return $this->answer($outcome);
+    }
+
+    /**
+     * Rows as JSON (`rows`) or a CSV file (`file`). `match` names the field
+     * that finds an existing record to update; `dry_run` validates everything
+     * and keeps nothing.
+     */
+    public function import(Request $request, string $resource, BatchRunner $runner, Importer $importer): JsonResponse
+    {
+        abort_unless(array_key_exists($resource, AdminContent::WITH_HISTORY), 404);
+
+        $request->validate([
+            'rows' => ['required_without:file', 'array'],
+            'rows.*' => ['array'],
+            'file' => ['required_without:rows', 'file', 'mimes:csv,txt', 'max:2048'],
+            'match' => ['sometimes', 'nullable', 'string', Rule::in(['slug', 'name', 'full_name'])],
+            'atomic' => ['sometimes', 'boolean'],
+            'dry_run' => ['sometimes', 'boolean'],
+        ]);
+
+        $rows = $request->hasFile('file')
+            ? $importer->rowsFromCsv($request->file('file'))
+            : $request->input('rows');
+
+        $operations = $importer->operations($resource, $rows, $request->input('match'));
+
+        // A dry run is all-or-nothing by nature: it keeps nothing either way.
+        $outcome = $runner->run(
+            $request,
+            $operations,
+            atomic: $request->boolean('atomic', true) || $request->boolean('dry_run'),
+            rollback: $request->boolean('dry_run'),
+        );
+
+        return $this->answer($outcome, ['dry_run' => $request->boolean('dry_run')]);
+    }
+
+    /**
+     * @param  array{results: array<int, array<string, mixed>>, committed: bool}  $outcome
+     * @param  array<string, mixed>  $meta
+     */
+    protected function answer(array $outcome, array $meta = []): JsonResponse
+    {
+        $failed = collect($outcome['results'])->where('status', '>=', 400)->count();
+
+        return response()->json([
+            'data' => $outcome['results'],
+            'meta' => [
+                ...$meta,
+                'committed' => $outcome['committed'],
+                'succeeded' => count($outcome['results']) - $failed,
+                'failed' => $failed,
+            ],
+        ]);
+    }
+}
diff --git a/app/Support/Batch/BatchAborted.php b/app/Support/Batch/BatchAborted.php
new file mode 100644
index 0000000..5609b50
--- /dev/null
+++ b/app/Support/Batch/BatchAborted.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Support\Batch;
+
+use RuntimeException;
+
+/**
+ * Thrown inside the batch's transaction to undo it.
+ */
+final class BatchAborted extends RuntimeException {}
diff --git a/app/Support/Batch/BatchRunner.php b/app/Support/Batch/BatchRunner.php
new file mode 100644
index 0000000..10db277
--- /dev/null
+++ b/app/Support/Batch/BatchRunner.php
@@ -0,0 +1,141 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Support\Batch;
+
+use Illuminate\Contracts\Http\Kernel;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+use Throwable;
+
+/**
+ * Runs several admin API calls as one.
+ *
+ * Each operation goes through the HTTP kernel as a request of its own, with
+ * the caller's credentials — so it is validated, authorised, throttled and
+ * answered exactly as if it had been sent separately. Nothing here knows what
+ * a page or a project is, which is the point: a batch cannot do anything the
+ * endpoints themselves would refuse.
+ *
+ * Atomic batches run inside one transaction and stop at the first failure,
+ * undoing everything before it. What left the database meanwhile — a queued
+ * job, a notification — is not undone.
+ */
+final class BatchRunner
+{
+    public const MAX_OPERATIONS = 50;
+
+    /**
+     * Endpoints a batch may not call: itself (no nesting), the import that is
+     * built on it, and the token exchange, which is not an admin operation.
+     */
+    protected const EXCLUDED = ['/v1/batch', '/v1/import/', '/v1/auth/'];
+
+    public function __construct(protected Kernel $kernel) {}
+
+    public static function allows(string $path): bool
+    {
+        // A plain path and an optional query string, with no way of climbing
+        // out of `/v1/` once the router normalises it.
+        if (! preg_match('#^/v1/[A-Za-z0-9_\-./]*(\?[A-Za-z0-9_\-.=&%\[\]+,]*)?$#', $path)
+            || str_contains($path, '..')
+            || str_contains($path, '//')) {
+            return false;
+        }
+
+        foreach (self::EXCLUDED as $excluded) {
+            if (str_starts_with($path, $excluded)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * @param  array<int, array{method: string, path: string, body?: array<string, mixed>|null}>  $operations
+     * @param  bool  $atomic  All or nothing.
+     * @param  bool  $rollback  Undo everything even when all succeeded — a dry run.
+     * @return array{results: array<int, array<string, mixed>>, committed: bool}
+     */
+    public function run(Request $parent, array $operations, bool $atomic = false, bool $rollback = false): array
+    {
+        $results = [];
+
+        $execute = function () use ($parent, $operations, $atomic, &$results): void {
+            foreach ($operations as $index => $operation) {
+                $result = $this->dispatch($parent, $operation);
+                $results[] = ['index' => $index, ...$result];
+
+                if ($atomic && $result['status'] >= 400) {
+                    throw new BatchAborted;
+                }
+            }
+        };
+
+        if (! $atomic && ! $rollback) {
+            $execute();
+
+            return ['results' => $results, 'committed' => true];
+        }
+
+        try {
+            DB::transaction(function () use ($execute, $rollback): void {
+                $execute();
+
+                if ($rollback) {
+                    throw new BatchAborted;
+                }
+            });
+        } catch (BatchAborted) {
+            return ['results' => $results, 'committed' => false];
+        }
+
+        return ['results' => $results, 'committed' => true];
+    }
+
+    /**
+     * @param  array{method: string, path: string, body?: array<string, mixed>|null}  $operation
+     * @return array{method: string, path: string, status: int, body: mixed}
+     */
+    protected function dispatch(Request $parent, array $operation): array
+    {
+        $method = strtoupper($operation['method']);
+        $path = $operation['path'];
+
+        $request = Request::create(
+            '/api'.$path,
+            $method,
+            server: array_filter([
+                'HTTP_AUTHORIZATION' => $parent->header('Authorization'),
+                'HTTP_ACCEPT' => 'application/json',
+                'HTTP_ACCEPT_LANGUAGE' => $parent->header('Accept-Language'),
+                'CONTENT_TYPE' => 'application/json',
+                'REMOTE_ADDR' => $parent->ip(),
+            ]),
+            content: $method === 'GET' ? null : (string) json_encode((object) ($operation['body'] ?? [])),
+        );
+
+        try {
+            $response = $this->kernel->handle($request);
+        } catch (Throwable $e) {
+            report($e);
+
+            return ['method' => $method, 'path' => $path, 'status' => 500, 'body' => null];
+        } finally {
+            // The kernel swapped the current request for the operation's;
+            // whatever runs after this one still belongs to the batch's.
+            app()->instance('request', $parent);
+        }
+
+        $content = $response->getContent();
+
+        return [
+            'method' => $method,
+            'path' => $path,
+            'status' => $response->getStatusCode(),
+            'body' => $content === '' || $content === false ? null : json_decode($content, true),
+        ];
+    }
+}
diff --git a/app/Support/Batch/Importer.php b/app/Support/Batch/Importer.php
new file mode 100644
index 0000000..f81f4b6
--- /dev/null
+++ b/app/Support/Batch/Importer.php
@@ -0,0 +1,148 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Support\Batch;
+
+use App\Support\AdminContent;
+use Illuminate\Http\UploadedFile;
+use Illuminate\Support\Arr;
+use Illuminate\Validation\ValidationException;
+use Spatie\Translatable\HasTranslations;
+
+/**
+ * Turns rows — from a JSON array or a CSV file — into the create and update
+ * calls the API already has, and hands them to the batch runner.
+ *
+ * A row that names an existing record, by `id` or by the field given as
+ * `match`, updates it; any other row creates one. In a CSV, a column called
+ * `title.es` fills the Spanish title, a list is written `1|2|3`, `true` and
+ * `false` are booleans, and an empty cell is left out rather than erasing
+ * what is there.
+ */
+final class Importer
+{
+    public const MAX_ROWS = BatchRunner::MAX_OPERATIONS;
+
+    /**
+     * Fields a CSV writes as `a|b|c`.
+     */
+    protected const LISTS = ['technology_ids', 'service_ids', 'project_ids'];
+
+    /**
+     * @return array<int, array<string, mixed>>
+     */
+    public function rowsFromCsv(UploadedFile $file): array
+    {
+        $handle = fopen($file->getRealPath(), 'r');
+        $header = null;
+        $rows = [];
+
+        while (($line = fgetcsv($handle, escape: '\\')) !== false) {
+            if ($line === [null]) {
+                continue;
+            }
+
+            if ($header === null) {
+                // A byte-order mark is what a spreadsheet saving "CSV UTF-8"
+                // puts before the first column's name.
+                $header = array_map(fn ($name) => trim((string) preg_replace('/^\xEF\xBB\xBF/', '', (string) $name)), $line);
+
+                continue;
+            }
+
+            $row = [];
+
+            foreach ($header as $i => $column) {
+                $value = $line[$i] ?? '';
+
+                if ($column === '' || $value === '') {
+                    continue;
+                }
+
+                Arr::set($row, $column, $this->cell($column, $value));
+            }
+
+            $rows[] = $row;
+        }
+
+        fclose($handle);
+
+        return $rows;
+    }
+
+    /**
+     * @param  array<int, array<string, mixed>>  $rows
+     * @return array<int, array{method: string, path: string, body: array<string, mixed>}>
+     */
+    public function operations(string $resource, array $rows, ?string $match = null): array
+    {
+        if (count($rows) > self::MAX_ROWS) {
+            throw ValidationException::withMessages(['rows' => [__('rules.batch.too_many', ['max' => self::MAX_ROWS])]]);
+        }
+
+        return array_map(function (array $row) use ($resource, $match): array {
+            $id = $row['id'] ?? $this->existing($resource, $row, $match);
+            unset($row['id']);
+
+            return $id === null
+                ? ['method' => 'POST', 'path' => "/v1/{$resource}", 'body' => $row]
+                : ['method' => 'PATCH', 'path' => "/v1/{$resource}/{$id}", 'body' => $row];
+        }, $rows);
+    }
+
+    /**
+     * The record a row names through its `match` field, if any: a slug is
+     * looked up in the default language when it is translated.
+     *
+     * @param  array<string, mixed>  $row
+     */
+    protected function existing(string $resource, array $row, ?string $match): mixed
+    {
+        if ($match === null || ! array_key_exists($match, $row)) {
+            return null;
+        }
+
+        $model = AdminContent::model($resource);
+        $instance = new $model;
+        $value = $row[$match];
+        $translated = in_array(HasTranslations::class, class_uses_recursive($model), true)
+            && in_array($match, $instance->translatable, true);
+
+        if ($translated) {
+            $locale = (string) config('locales.default');
+            $value = is_array($value) ? ($value[$locale] ?? null) : $value;
+            $column = "{$match}->{$locale}";
+        } else {
+            $column = $match;
+        }
+
+        if ($value === null || is_array($value)) {
+            return null;
+        }
+
+        $query = $model::query();
+
+        if (method_exists($instance, 'bootSoftDeletes')) {
+            $query->withTrashed();
+        }
+
+        return $query->where($column, $value)->value($instance->getKeyName());
+    }
+
+    protected function cell(string $column, string $value): mixed
+    {
+        $base = explode('.', $column)[0];
+
+        return match (true) {
+            in_array($base, self::LISTS, true) => array_map(
+                fn ($item) => is_numeric($item) ? (int) $item : $item,
+                array_values(array_filter(array_map('trim', explode('|', $value)), fn ($item) => $item !== '')),
+            ),
+            strtolower($value) === 'true' => true,
+            strtolower($value) === 'false' => false,
+            strtolower($value) === 'null' => null,
+            default => $value,
+        };
+    }
+}
diff --git a/lang/ca/rules.php b/lang/ca/rules.php
index fbf0686..a8d6774 100644
--- a/lang/ca/rules.php
+++ b/lang/ca/rules.php
@@ -39,6 +39,11 @@ return [
         'not_awaiting' => 'No està esperant revisió.',
     ],
 
+    'batch' => [
+        'path' => 'Només operacions de l\'API d\'administració (/v1/…), sense lots niats ni importacions.',
+        'too_many' => 'Com a molt :max files per importació.',
+    ],
+
     'settings' => [
         'read_only' => 'Aquest ajust l\'escriu l\'aplicació i no es pot editar a mà.',
     ],
diff --git a/lang/en/rules.php b/lang/en/rules.php
index 9c630fc..bb0053d 100644
--- a/lang/en/rules.php
+++ b/lang/en/rules.php
@@ -39,6 +39,11 @@ return [
         'not_awaiting' => 'It is not awaiting review.',
     ],
 
+    'batch' => [
+        'path' => 'Only admin API operations (/v1/…), with no nested batches or imports.',
+        'too_many' => 'At most :max rows per import.',
+    ],
+
     'settings' => [
         'read_only' => 'This setting is written by the application and cannot be edited by hand.',
     ],
diff --git a/lang/es/rules.php b/lang/es/rules.php
index 60adb83..41f37ce 100644
--- a/lang/es/rules.php
+++ b/lang/es/rules.php
@@ -39,6 +39,11 @@ return [
         'not_awaiting' => 'No está esperando revisión.',
     ],
 
+    'batch' => [
+        'path' => 'Solo operaciones de la API de administración (/v1/…), sin lotes anidados ni importaciones.',
+        'too_many' => 'Como mucho :max filas por importación.',
+    ],
+
     'settings' => [
         'read_only' => 'Este ajuste lo escribe la aplicación y no se puede editar a mano.',
     ],
diff --git a/public/openapi.yaml b/public/openapi.yaml
index 2f4baad..4eabf60 100644
--- a/public/openapi.yaml
+++ b/public/openapi.yaml
@@ -136,6 +136,8 @@ tags:
     description: Review, publication and preview links
   - name: Health
     description: What is wrong with the site, and what is left to translate
+  - name: Batch
+    description: Several operations in one, and importing records from JSON or CSV
   - name: Users
     description: Local user administration
   - name: Media
@@ -3638,6 +3640,107 @@ paths:
                     items: { $ref: "#/components/schemas/PendingTranslation" }
         "422": { $ref: "#/components/responses/ValidationError" }
 
+  /v1/batch:
+    post:
+      tags: [Batch]
+      summary: Run several operations
+      description: |
+        Up to 50 admin API calls in one request. Each runs as a request of its
+        own with the caller's credentials — validated, authorised and answered
+        exactly as if sent separately — so a batch can do nothing its
+        operations would be refused. Their answers come back in order.
+
+        With `atomic`, it stops at the first failure and undoes everything
+        before it. What already left the database — a queued job, a
+        notification — is not undone.
+
+        `path` is an admin path such as `/v1/pages/3`; batches do not nest and
+        do not reach the import or the token exchange.
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [operations]
+              properties:
+                atomic: { type: boolean, default: false }
+                operations:
+                  type: array
+                  maxItems: 50
+                  items:
+                    type: object
+                    required: [method, path]
+                    properties:
+                      method: { type: string, enum: [GET, POST, PUT, PATCH, DELETE] }
+                      path: { type: string, example: /v1/technologies }
+                      body: { type: object, nullable: true, additionalProperties: true }
+      responses:
+        "200":
+          description: Each operation's answer
+          content:
+            application/json:
+              schema: { $ref: "#/components/schemas/BatchOutcome" }
+        "403": { $ref: "#/components/responses/Forbidden" }
+        "422": { $ref: "#/components/responses/ValidationError" }
+
+  /v1/import/{resource}:
+    post:
+      tags: [Batch]
+      summary: Import records
+      description: |
+        Rows of one kind of record, as JSON (`rows`) or a CSV `file`, turned
+        into the create and update calls the API already has — up to 50 per
+        import, each validated and authorised like any other call.
+
+        A row with an `id`, or whose `match` field (`slug`, `name` or
+        `full_name`) names an existing record, updates it; any other row
+        creates one. In a CSV, a column `title.es` fills the Spanish title, a
+        list is written `1|2|3`, `true`/`false`/`null` are what they say, and
+        an empty cell is left out rather than erasing what is there.
+
+        All-or-nothing unless `atomic` is false. `dry_run` checks every row and
+        keeps none.
+      parameters:
+        - name: resource
+          in: path
+          required: true
+          schema:
+            type: string
+            enum: [pages, categories, projects, members, services, clients, testimonials, talks, technologies, calls]
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [rows]
+              properties:
+                rows:
+                  type: array
+                  maxItems: 50
+                  items: { type: object, additionalProperties: true, description: The same body the resource's create endpoint takes. }
+                match: { type: string, enum: [slug, name, full_name], nullable: true }
+                atomic: { type: boolean, default: true }
+                dry_run: { type: boolean, default: false }
+          multipart/form-data:
+            schema:
+              type: object
+              required: [file]
+              properties:
+                file: { type: string, format: binary, description: "CSV with a header row, UTF-8." }
+                match: { type: string, enum: [slug, name, full_name] }
+                atomic: { type: boolean, default: true }
+                dry_run: { type: boolean, default: false }
+      responses:
+        "200":
+          description: Each row's answer
+          content:
+            application/json:
+              schema: { $ref: "#/components/schemas/BatchOutcome" }
+        "403": { $ref: "#/components/responses/Forbidden" }
+        "422": { $ref: "#/components/responses/ValidationError" }
+
   /v1/media:
     get:
       tags: [Media]
@@ -5418,6 +5521,27 @@ components:
         missing: { type: array, items: { type: string }, description: Languages with nothing written. }
         stale: { type: object, additionalProperties: { type: string, format: date-time }, description: Language → since when it has been behind. }
 
+    BatchOutcome:
+      type: object
+      properties:
+        data:
+          type: array
+          items:
+            type: object
+            properties:
+              index: { type: integer }
+              method: { type: string }
+              path: { type: string }
+              status: { type: integer, description: The HTTP status the operation answered with. }
+              body: { nullable: true, description: What the operation answered. }
+        meta:
+          type: object
+          properties:
+            committed: { type: boolean, description: False when an atomic run or a dry run undid everything. }
+            succeeded: { type: integer }
+            failed: { type: integer }
+            dry_run: { type: boolean, nullable: true }
+
     MediaFor:
       type: string
       enum: [pages, technologies, projects, members, clients, testimonials]
diff --git a/routes/api.php b/routes/api.php
index bec7a26..21fd0c7 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -12,6 +12,7 @@ use App\Http\Controllers\Api\PublicApi\V1\ShowcaseController;
 use App\Http\Controllers\Api\PublicApi\V1\SiteController;
 use App\Http\Controllers\Api\PublicApi\V1\TelemetryController;
 use App\Http\Controllers\Api\V1\ApplicationController as AdminApplicationController;
+use App\Http\Controllers\Api\V1\BatchController;
 use App\Http\Controllers\Api\V1\CallController;
 use App\Http\Controllers\Api\V1\CategoryController;
 use App\Http\Controllers\Api\V1\ClientController;
@@ -246,6 +247,13 @@ Route::prefix('v1')->name('api.v1.')->group(function () {
 
         Route::get('reviews', [ReviewController::class, 'queue'])->name('reviews.queue');
 
+        // Several calls in one. Each operation is still its own request, with
+        // its own validation and permission check.
+        Route::post('batch', [BatchController::class, 'batch'])->name('batch');
+        Route::post('import/{resource}', [BatchController::class, 'import'])
+            ->whereIn('resource', array_keys(AdminContent::WITH_HISTORY))
+            ->name('import');
+
         // The panel's health screen, and what is left to translate.
         Route::get('health', [HealthController::class, 'index'])->name('health');
         Route::get('translations/pending', [HealthController::class, 'translations'])->name('translations.pending');
diff --git a/tests/Feature/Api/BatchApiTest.php b/tests/Feature/Api/BatchApiTest.php
new file mode 100644
index 0000000..b311e32
--- /dev/null
+++ b/tests/Feature/Api/BatchApiTest.php
@@ -0,0 +1,181 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Feature\Api;
+
+use App\Models\Member;
+use App\Models\Technology;
+use App\Models\User;
+use Database\Seeders\RolePermissionSeeder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Http\UploadedFile;
+use PHPUnit\Framework\Attributes\Test;
+use Tests\FakesPireon;
+use Tests\TestCase;
+
+/**
+ * Batches and imports: several admin calls in one, each still validated and
+ * authorised on its own.
+ */
+class BatchApiTest extends TestCase
+{
+    use FakesPireon, RefreshDatabase;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->seed(RolePermissionSeeder::class);
+    }
+
+    protected function actingWithRole(string $role): User
+    {
+        $user = User::factory()->create();
+        $user->syncRoles([$role]);
+
+        $this->withHeaders($this->apiHeadersFor($user));
+
+        return $user;
+    }
+
+    #[Test]
+    public function a_batch_runs_each_operation_and_reports_each_answer(): void
+    {
+        $this->actingWithRole('editor');
+
+        $member = Member::factory()->create();
+
+        $this->postJson('/api/v1/batch', [
+            'operations' => [
+                ['method' => 'POST', 'path' => '/v1/technologies', 'body' => ['name' => 'Vue', 'slug' => 'vue']],
+                ['method' => 'PATCH', 'path' => "/v1/members/{$member->id}", 'body' => ['github_username' => 'ada']],
+                ['method' => 'POST', 'path' => '/v1/technologies', 'body' => ['name' => '']],
+                ['method' => 'GET', 'path' => '/v1/me'],
+            ],
+        ])
+            ->assertOk()
+            ->assertJsonPath('data.0.status', 201)
+            ->assertJsonPath('data.0.body.data.slug', 'vue')
+            ->assertJsonPath('data.1.status', 200)
+            ->assertJsonPath('data.2.status', 422)
+            ->assertJsonPath('data.3.status', 200)
+            ->assertJsonPath('meta.committed', true)
+            ->assertJsonPath('meta.failed', 1);
+
+        $this->assertSame('ada', $member->fresh()->github_username);
+        $this->assertTrue(Technology::query()->where('slug', 'vue')->exists());
+    }
+
+    #[Test]
+    public function an_atomic_batch_keeps_nothing_when_one_fails(): void
+    {
+        $this->actingWithRole('editor');
+
+        $this->postJson('/api/v1/batch', [
+            'atomic' => true,
+            'operations' => [
+                ['method' => 'POST', 'path' => '/v1/technologies', 'body' => ['name' => 'Vue', 'slug' => 'vue']],
+                ['method' => 'POST', 'path' => '/v1/technologies', 'body' => ['name' => '']],
+                ['method' => 'POST', 'path' => '/v1/technologies', 'body' => ['name' => 'Never', 'slug' => 'never']],
+            ],
+        ])
+            ->assertOk()
+            ->assertJsonCount(2, 'data')
+            ->assertJsonPath('meta.committed', false);
+
+        $this->assertSame(0, Technology::query()->count());
+    }
+
+    #[Test]
+    public function a_batch_cannot_do_what_its_caller_cannot(): void
+    {
+        $this->actingWithRole('viewer');
+
+        $this->postJson('/api/v1/batch', [
+            'operations' => [['method' => 'POST', 'path' => '/v1/technologies', 'body' => ['name' => 'Vue', 'slug' => 'vue']]],
+        ])->assertJsonPath('data.0.status', 403);
+
+        $this->assertSame(0, Technology::query()->count());
+    }
+
+    #[Test]
+    public function batches_do_not_nest_or_leave_the_admin_api(): void
+    {
+        $this->actingWithRole('editor');
+
+        foreach (['/v1/batch', '/v1/import/pages', '/v1/auth/token', '/public/v1/site', '/v1/../public/v1/site'] as $path) {
+            $this->postJson('/api/v1/batch', ['operations' => [['method' => 'POST', 'path' => $path]]])
+                ->assertUnprocessable()
+                ->assertJsonValidationErrors('operations.0.path');
+        }
+    }
+
+    #[Test]
+    public function an_import_creates_new_rows_and_updates_matching_ones(): void
+    {
+        $this->actingWithRole('editor');
+
+        Technology::factory()->create(['name' => 'Angular', 'slug' => 'angular', 'website' => null]);
+
+        $this->postJson('/api/v1/import/technologies', [
+            'match' => 'slug',
+            'rows' => [
+                ['name' => 'Angular', 'slug' => 'angular', 'website' => 'https://angular.dev'],
+                ['name' => 'Svelte', 'slug' => 'svelte', 'description' => ['es' => 'Compilador', 'en' => 'Compiler']],
+            ],
+        ])
+            ->assertOk()
+            ->assertJsonPath('data.0.method', 'PATCH')
+            ->assertJsonPath('data.1.method', 'POST')
+            ->assertJsonPath('meta.succeeded', 2);
+
+        $this->assertSame('https://angular.dev', Technology::query()->where('slug', 'angular')->value('website'));
+        $this->assertSame(2, Technology::query()->count());
+    }
+
+    #[Test]
+    public function a_csv_import_reads_languages_lists_and_booleans(): void
+    {
+        $this->actingWithRole('editor');
+
+        [$vue, $php] = Technology::factory()->count(2)->create();
+
+        $csv = "\xEF\xBB\xBFname,slug,headline.es,headline.en,technology_ids,is_public,github_username\n"
+            ."Ada Lovelace,ada,Backend,Backend dev,{$vue->id}|{$php->id},true,\n"
+            ."Linus,linus,Sistemas,,,false,linus\n";
+
+        $this->post('/api/v1/import/members', [
+            'file' => UploadedFile::fake()->createWithContent('members.csv', $csv),
+        ], ['Accept' => 'application/json'])
+            ->assertOk()
+            ->assertJsonPath('meta.failed', 0);
+
+        $ada = Member::query()->where('slug', 'ada')->sole();
+
+        $this->assertSame('Backend dev', $ada->getTranslation('headline', 'en'));
+        $this->assertCount(2, $ada->technologies);
+        $this->assertTrue($ada->is_public);
+        $this->assertFalse(Member::query()->where('slug', 'linus')->sole()->is_public);
+    }
+
+    #[Test]
+    public function a_dry_run_validates_everything_and_keeps_nothing(): void
+    {
+        $this->actingWithRole('editor');
+
+        $this->postJson('/api/v1/import/technologies', [
+            'dry_run' => true,
+            'rows' => [
+                ['name' => 'Vue', 'slug' => 'vue'],
+                ['name' => 'Svelte', 'slug' => 'svelte'],
+            ],
+        ])
+            ->assertOk()
+            ->assertJsonPath('meta.dry_run', true)
+            ->assertJsonPath('meta.committed', false)
+            ->assertJsonPath('meta.succeeded', 2);
+
+        $this->assertSame(0, Technology::query()->count());
+    }
+}