Overview

Product video
Catch-Phrase gives AI agents controlled, hallucination-free natural language access to SQL databases. Whether your agents need to query data or issue update commands, Catch-Phrase ensures that only correct, verified SQL is ever executed, backed by a 100% accuracy guarantee for questions and commands within the semantically tractable class.
Why Catch-Phrase? Traditional LLM-based Text-to-SQL approaches are probabilistic by nature and they can silently produce wrong queries with no warning. Catch-Phrase is different. It always signals when a question or command has been interpreted flawlessly, and clearly indicates when it hasn't. No silent failures. No undetected hallucinations.
Highlights
- Hallucination-Free SQL Execution: The only text-to-SQL solution with a 100% accuracy guarantee for semantically tractable questions and update commands. Catch-Phrase always signals when a question is interpreted flawlessly, and clearly flags when it isn't. No silent failures, no wrong queries slipping through.
- Full Control Between Agent and Database: Catch-Phrase acts as a secure guardrail, ensuring no uncontrolled SQL is ever executed. Fully configurable for any semantic layer, permissions model, or complex schema and deployable on your own AWS infrastructure to meet any security or compliance requirements.
- Seamless Integration, No Lock-in: Connect via MCP Server, REST API, or point-and-click UI. Supports PostgreSQL, MySQL, SQLite, Oracle, SQL Server, Snowflake, and Redshift. Built on open XML and JSON standards. No data movement, no model training, no vendor lock-in.
Details
Introducing multi-product solutions
You can now purchase comprehensive solutions tailored to use cases and industries.
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Pricing
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Dimension | Cost/hour |
|---|---|
t3.small Recommended | $0.50 |
t2.small | $0.50 |
t2.xlarge | $4.00 |
t3.xlarge | $4.00 |
t3a.small | $0.50 |
t3a.micro | $0.25 |
t3.2xlarge | $8.00 |
t2.2xlarge | $8.00 |
t2.medium | $1.00 |
t3.medium | $1.00 |
Vendor refund policy
We want you to be completely satisfied with your purchase. If for any reason you are not satisfied, you can request a refund within 30 days of your purchase date.
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Delivery details
64-bit (x86) Amazon Machine Image (AMI)
Amazon Machine Image (AMI)
An AMI is a virtual image that provides the information required to launch an instance. Amazon EC2 (Elastic Compute Cloud) instances are virtual servers on which you can run your applications and workloads, offering varying combinations of CPU, memory, storage, and networking resources. You can launch as many instances from as many different AMIs as you need.
Version release notes
A new C-Phrase update:
- MCP Server
- Improved REST API
- Improved Logging
Additional details
Usage instructions
The full documentation of C-Phrase is available at: https://c-phrase.com/documentation
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During EC2 AMI launch step 3 (configure instance details) provide the following advanced detail user-data as text: #!/bin/bash /root/start-cp.sh
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In your security policies, allow ingress on port 9999 as well as a range of ports that you will run NLIs on (for example ports 8000-9998).
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Visit http://<IP-of-EC2-Instance>:9999 user name:admin password:<id-of-your-EC2-Instance>
For more details and instructions to change your user name/password visit https://c-phrase.com/documentation/on-aws.html
Resources
Vendor resources
Support
Vendor support
We are interested to learn how you are using Catch-Phrase, thus we offer several hours of free support or consultation for our new customers. Please reach out to us at contact@c-phrase.com . We can also enter into support contracts to help customers integrate, author and extend Catch-Phrase to meet their specific needs. Finally we are always open to negotiate private offers and can offer Catch-Phrase at reduced or free prices for academic and other non-commercial use.
AWS infrastructure support
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.