Kubling vs Query Streams
Kubling
kubling.comQuery Streams
querystreams.comSide by side
| Figure | Kubling | Query Streams |
|---|---|---|
| Price from | — | $15/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 0 | 4 |
| Spec score · Data Virtualization Software | 7.5 (#16) | 9.1 (#1) |
| Federated queries | Queries and mutations can cross databases, APIs, and infrastructure, with providers translating operations to each source's native protocol. | Federated SQL can join data from multiple connected databases without first exporting or copying the source data. |
| Purpose | Kubling provides AI agents and automation with a bounded model of live IT and OT state, federated directly from source systems. | Query Streams provides governed access to databases and APIs for spreadsheets, AI clients, apps, and scheduled data syncs through an outbound-only Network Agent. |
Plans
Query Streams
- FreeFree
- Personal Core$15 a month
- Personal Plus$30 a month
- Business Core$50 a month
In their own words
Kubling
Kubling gives AI agents and automation a bounded model of live IT and OT state, federated directly from source systems. It defines shared entities, relationships, source ownership, and valid actions so queries and mutations can cross databases, APIs, and infrastructure. Providers translate operations into each source’s native protocol while retaining credentials, source logic, and release cycles; Kubling handles federation, planning, and policy. The OpenAPI provider exposes API operations as relational entities and maps mutations to HTTP operations. Instances can use local providers, federate other Kubling instances, or do both, with no central instance required. Providers are independent services behind a public gRPC contract and can be written in any gRPC-supported language. The catalog lists Cassandra, Kubernetes, OpenAPI, Redis, and an in-memory provider. The provider protocol, Go SDK, and official providers are open source, but the engine is not. Quickstart requires Git, Docker Engine, and Docker Compose v2. Provider APIs are pre-1.0; exact versions are recommended.
Query Streams
Query Streams gives spreadsheets, AI clients, apps, and scheduled syncs governed access to databases and APIs through an outbound-only Network Agent. Nova AI accepts plain-English questions, reads a database schema, runs read-only SQL, and returns metrics, tables, and charts. A hosted MCP server connects sources to Claude, Cursor, ChatGPT, and Grok using a revocable key. Excel and Google Sheets add-ins run shared saved queries and stream live results into cells without exposing SQL to recipients. Federated queries join data from multiple databases and API sources in one SQL statement. Scheduled results can be sent to supported services as often as every five minutes. The Network Agent makes an encrypted outbound connection, needs no inbound ports or VPN, restricts queries to SELECT, WITH, and EXPLAIN, and keeps database credentials on the user's network. The Free tier is free and includes 5 MB/month query traffic; paid plans start at $15 a month. New accounts receive a 30-day trial with every feature unlocked and no credit card.