CQL, clusters, and calm.
Native CQL with keyspace and table browsing, paged queries with named parameters, compression, SSH tunneling, and full-primary-key row edits - plus per-connection consistency levels and cancellable queries.
Cassandra · ScyllaDB · native CQL · SSH tunneling
The paged read Mongrel runs for you.
Click any stage below to see what happens to your CQL, from parameter binding to the last page. Same flow you get inside the workbench.
// First page · 500 rows · paging state
The first page arrives with the driver's paging state attached. Rows render immediately in the Results grid while the rest of the partition stays server-side.
-- ks.events · paged read, 500 rows per page SELECT event_id, status, payload FROM ks.events WHERE tenant_id = :tenant_id AND created_at > :since; -- page 1 of 9 · 500 rows · paging state saved -- ▶ Next page resumes the running query - no re-execution -- ✎ Edit a row inline: UPDATE keyed by the full primary key -- parameters :tenant_id = 'acme', :since = '2026-06-01'
What Mongrel ships for Cassandra.
Keyspace & table browser
Browse keyspaces, tables, and views with full column and key detail - partition keys, clustering keys, primary keys, and indexes.
Paged CQL with parameters
Run CQL with named parameters and driver-level paging. Large partitions stream in pages instead of freezing the grid.
Consistency & cancel control
Set default and serial consistency levels per connection, and cancel an in-flight CQL statement without dropping the session.
Full-primary-key row edits
Edit rows safely with the complete primary key enforced. No accidental cross-partition writes, ever.
SSH tunneling & native auth
Reach private clusters through an SSH tunnel to your contact point, with Cassandra/ScyllaDB native username-password authentication.
Compression-aware transport
LZ4 or Snappy compression on the wire, negotiated per connection and set right in the connection profile.
Filtered browse & batch insert
Project columns, filter where Cassandra's query rules allow, sort on clustering columns - and insert one row or a whole batch.
Cassandra & ScyllaDB alike
One native CQL plugin for Apache Cassandra and Scylla-compatible clusters, with direct-peer topology discovery and failover.
Result export
Export the current result page to CSV, JSON, Excel, or Parquet through the standard Results export actions.