Meilisearch MCP Server

Instructions

Implementation Reference

• src/tools/document-tools.ts:163-190 (handler)

  Handler function that executes the tool logic: parses input documents JSON, validates array, prepares params with optional primaryKey, performs PUT request to update documents in Meilisearch via apiClient, returns response or error.

  async ({ indexUid, documents, primaryKey }: UpdateDocumentsParams) => {
    try {
      // Parse the documents string to ensure it's valid JSON
      const parsedDocuments = JSON.parse(documents);
      
      // Ensure documents is an array
      if (!Array.isArray(parsedDocuments)) {
        return {
          isError: true,
          content: [{ type: 'text', text: 'Documents must be a JSON array' }],
        };
      }
      
      const params: Record<string, string> = {};
      if (primaryKey) {
        params.primaryKey = primaryKey;
      }
      
      const response = await apiClient.put(`/indexes/${indexUid}/documents`, parsedDocuments, {
        params,
      });
      return {
        content: [{ type: 'text', text: JSON.stringify(response.data, null, 2) }],
      };
    } catch (error) {
      return createErrorResponse(error);
    }
  }

• src/tools/document-tools.ts:158-162 (schema)

  Zod input schema defining parameters for the update-documents tool: indexUid (required string), documents (required JSON string of array), primaryKey (optional string).

  {
    indexUid: z.string().describe('Unique identifier of the index'),
    documents: z.string().describe('JSON array of documents to update'),
    primaryKey: z.string().optional().describe('Primary key for the documents'),
  },

• src/tools/document-tools.ts:155-191 (registration)

  MCP server.tool registration for 'update-documents', including description, input schema, and handler function.

  server.tool(
    'update-documents',
    'Update documents in a Meilisearch index',
    {
      indexUid: z.string().describe('Unique identifier of the index'),
      documents: z.string().describe('JSON array of documents to update'),
      primaryKey: z.string().optional().describe('Primary key for the documents'),
    },
    async ({ indexUid, documents, primaryKey }: UpdateDocumentsParams) => {
      try {
        // Parse the documents string to ensure it's valid JSON
        const parsedDocuments = JSON.parse(documents);
        
        // Ensure documents is an array
        if (!Array.isArray(parsedDocuments)) {
          return {
            isError: true,
            content: [{ type: 'text', text: 'Documents must be a JSON array' }],
          };
        }
        
        const params: Record<string, string> = {};
        if (primaryKey) {
          params.primaryKey = primaryKey;
        }
        
        const response = await apiClient.put(`/indexes/${indexUid}/documents`, parsedDocuments, {
          params,
        });
        return {
          content: [{ type: 'text', text: JSON.stringify(response.data, null, 2) }],
        };
      } catch (error) {
        return createErrorResponse(error);
      }
    }
  );

• src/index.ts:65-65 (registration)

  Top-level call to registerDocumentTools on the MCP server instance, which includes the update-documents tool.

  registerDocumentTools(server);

• src/tools/document-tools.ts:34-38 (schema)

  TypeScript interface defining the parameters for the update-documents handler.

  interface UpdateDocumentsParams {
    indexUid: string;
    documents: string;
    primaryKey?: string;
  }