Mongodb Aggregate
Run a read-only aggregation pipeline on one collection ($match, $group, $lookup, etc.). Pass pipeline as a JSON array. Results are capped for safety.
Mongodb Create Collection
Create an empty collection in the current database.
Mongodb Create Index
Create an index on a collection. Pass keys as JSON with field names and 1 (asc) or -1 (desc).
Mongodb Delete Documents
Delete documents in a collection that match a filter. Query must not be empty {} — narrow the filter so you only remove intended records.
Mongodb Drop Collection
Drop a collection and all of its documents. Requires confirm=true.
Mongodb Drop Index
Drop a named index. Cannot drop the default _id index.
Mongodb Explain Operation
Return MongoDB explain output for a find filter or aggregation pipeline. Use to debug slow queries and index usage before running large reads.
Mongodb Export Collection
Export collection documents to JSON or JSONL. Small exports return inline data; larger exports spill to a presigned S3 download_url (over ~512 KB). Pass that download_url to mongodb_import_documents as file_url to re-import elsewhere.
Mongodb Get AI Description
Get a compact, token-efficient schema description optimized for AI text-to-query generation
Mongodb Get Documents
Read documents from one MongoDB collection. Pass document_id for a single record by _id (use the _id string from a prior list result). Omit document_id to list with query, limit, skip, and optional sort. Always set collection — discover names with list collections first.
Mongodb Get Server Info
Get MongoDB server version and build information
Mongodb Import Documents
Bulk-insert documents from a file. Use file_content_base64 for payloads up to 1 MB, file_url for larger HTTP(S) sources (including export spillover links), or local_path with MCPBundles Desktop for files on this computer (https://www.mcpbundles.com/desktop). Format: json array or jsonl.
Mongodb Insert Documents
Insert one or more documents into a MongoDB collection. Pass an array of JSON objects; _id may be omitted for server-generated ObjectIds. Use inspect collection or get documents to learn field shapes before inserting.
Mongodb Inspect Collection
Inspect one collection: estimated document count, index names, and a few sample documents to learn field shapes before writing filters for get documents.
Mongodb List Collections
List all collections in the current database
Mongodb List Databases
List all databases in the MongoDB instance with size information
Mongodb List Indexes
List index definitions for one collection (keys, uniqueness, TTL, partial filters). Use before create index or drop index.
Mongodb Replace Document
Replace one document by _id with a full new document body. Unlike update documents, this overwrites the entire document. Set upsert to create the document when missing.
Mongodb Search Collections
Find documents across multiple collections in one database. Applies the same filter to up to 20 collections (cap with max_collections). Each hit includes collection name. Prefer mongodb_get_documents when you already know the collection.
Mongodb Update Documents
Update all documents in a collection that match a filter. Pass a non-empty query and an update JSON object with operators such as $set. Set upsert true to insert when nothing matches.
