diff --git a/.changeset/proud-lies-brush.md b/.changeset/proud-lies-brush.md
new file mode 100644
index 0000000000000000000000000000000000000000..c3364c42d6a17c2e953acc7a066f6bec11bf8313
--- /dev/null
+++ b/.changeset/proud-lies-brush.md
@@ -0,0 +1,5 @@
+---
+"llamaindex": patch
+---
+
+Fix LlamaCloud retrieval with multiple pipelines
diff --git a/packages/llamaindex/src/cloud/LlamaCloudRetriever.ts b/packages/llamaindex/src/cloud/LlamaCloudRetriever.ts
index 54f18fb863004509d8c20e7b8f065bbf9ce88a2c..d2a6595044764d2e6a0e115225a24e8ddbb97d5a 100644
--- a/packages/llamaindex/src/cloud/LlamaCloudRetriever.ts
+++ b/packages/llamaindex/src/cloud/LlamaCloudRetriever.ts
@@ -61,7 +61,7 @@ export class LlamaCloudRetriever extends BaseRetriever {
       await PipelinesService.searchPipelinesApiV1PipelinesGet({
         query: {
           project_id: await getProjectId(this.projectName, this.organizationId),
-          project_name: this.pipelineName,
+          pipeline_name: this.pipelineName,
         },
         throwOnError: true,
       });
@@ -72,25 +72,11 @@ export class LlamaCloudRetriever extends BaseRetriever {
       );
     }
 
-    const { data: pipeline } =
-      await PipelinesService.getPipelineApiV1PipelinesPipelineIdGet({
-        path: {
-          pipeline_id: pipelines[0]!.id,
-        },
-        throwOnError: true,
-      });
-
-    if (!pipeline) {
-      throw new Error(
-        `No pipeline found with name ${this.pipelineName} in project ${this.projectName}`,
-      );
-    }
-
     const { data: results } =
       await PipelinesService.runSearchApiV1PipelinesPipelineIdRetrievePost({
         throwOnError: true,
         path: {
-          pipeline_id: pipeline.id,
+          pipeline_id: pipelines[0]!.id,
         },
         body: {
           ...this.retrieveParams,
diff --git a/packages/llamaindex/src/cloud/utils.ts b/packages/llamaindex/src/cloud/utils.ts
index c5fdcbb3ed89047d52345764c85758e5f5de6d52..bbaadd854c7b834171a1d5f74dfaab4d1483b9ac 100644
--- a/packages/llamaindex/src/cloud/utils.ts
+++ b/packages/llamaindex/src/cloud/utils.ts
@@ -40,9 +40,9 @@ export async function getProjectId(
 ): Promise<string> {
   const { data: projects } = await ProjectsService.listProjectsApiV1ProjectsGet(
     {
-      path: {
+      query: {
         project_name: projectName,
-        organization_id: organizationId,
+        organization_id: organizationId ?? null,
       },
       throwOnError: true,
     },