NLSQL

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What NLSQL is

NLSQL turns plain-English questions into SQL and returns data insights for analytics and reporting. People can use chat interfaces to receive answers, charts, and visualizations through Microsoft Teams, Slack, a standalone web app, or web chat. Its API documentation lists MySQL, Microsoft SQL, PostgreSQL, Amazon Redshift, BigQuery, SQLite, Snowflake, Google Spreadsheets, and Cassandra CQL. Administrators first configure the database structure and map KPI calculation methods to columns. NLSQL returns SQL and an answer template; the customer's client runs the analytical query. The maker describes safeguards including parse, policy, and literal checks, a SELECT-only rule, and schema allow-list checks. Deployment options include the customer's Azure subscription, and the product is also available through AWS Marketplace. For Azure tenant deployments, the maker says customer data stays in the customer's environment. Developers can use a REST API, Python client, and MCP server. Pricing is on request, and a free 30-day trial is available without a credit card. NLSQL was founded in 2018 and is headquartered in London, United Kingdom.

Who it suits

NLSQL suits teams that want to query corporate data in plain English through chat or a web app. It may also suit developers who need API, Python client, or MCP access.

What it does well

Supports several chat interfaces, including Teams and Slack.
Lists nine supported database and spreadsheet systems.
Offers a free 30-day trial without a credit card.
Provides REST API, Python client, and MCP server.

What to know first

Pricing is available on request.
Administrators must map database structure and KPI methods before use.
NLSQL returns SQL; the customer's client runs the query.

Limits

The free trial lasts 30 days; continued use requires a paid plan with pricing on request. NLSQL supplies SQL and an answer template, while the customer’s client runs the analytical query.

Plans

Plan	Billed and limits	Price
NLSQL	Paid plans are billed through the Azure subscription; pricing depends on the applicable product listing or subscription agreement. · Free 30-day trial · No credit card to start	On request

As nlsql.com lists them, read 7 Oct 2026. The maker's own page has the final word.

Getting started

Open https://nlsql.com/
Start the free 30-day trial without a credit card
Choose web app, web chat, Microsoft Teams, Slack, API, or MCP access
Deploy in the customer’s Azure subscription or use AWS Marketplace
Configure the database structure model
Map KPI calculation methods to database columns
Connect a supported database and submit natural-language questions

Verdict

NLSQL offers natural-language access to data through familiar chat channels, with database setup required before use. Its distinction between generating SQL and executing it is important when assessing how it fits a team's workflow.

Questions

Is there a free plan?

No. NLSQL offers a free 30-day trial and then requires a paid plan.

How much does NLSQL cost?

Pricing is available on request. Paid plans are billed through the applicable Azure subscription or agreement.

Which platforms can I use?

NLSQL is available as an API, Linux deployment, self-hosted product, and web app. It also works through Microsoft Teams, Slack, and web chat.

Which databases are supported?

Documented connections include MySQL, Microsoft SQL, PostgreSQL, Amazon Redshift, BigQuery, SQLite, Snowflake, Google Spreadsheets, and Cassandra CQL.

Does NLSQL run my SQL queries?

It returns SQL and an answer template. The customer’s client executes the analytical SQL.

Can developers connect AI agents?

Yes. NLSQL provides a REST API, Python client, and MCP server configurable with Claude, Cursor, OpenClaw, and other MCP-enabled agents.

Facts from NLSQL's own pages

Answer formats: NLSQL provides answers, charts, and visualizations through chat interfaces. · nlsql.com, 7 Oct 2026
API and developer tools: NLSQL documents a REST API and Python client, and its API documentation describes an MCP server compatible with Claude, Cursor, OpenClaw, and other MCP-enabled agents. · nlsql.com, 7 Oct 2026
API and MCP: NLSQL provides an API and an MCP server that can be configured with Claude, Cursor, OpenClaw and other MCP-enabled agents. · nlsql.com, 7 Oct 2026
Chat interfaces: The product can be used through Microsoft Teams, Slack, a web app or web chat. · nlsql.com, 7 Oct 2026
Compliance: The maker describes GDPR and UK GDPR as self-attested and states that it is registered with the UK Information Commissioner's Office. · nlsql.com, 7 Oct 2026
Configuration: Customers map their database structure and KPI calculation methods in a self-service platform before using NLSQL. · nlsql.com, 7 Oct 2026
Database support: The API documentation lists MySQL, Microsoft SQL, PostgreSQL, Amazon Redshift, BigQuery, SQLite, Snowflake, Google Spreadsheets, and Cassandra CQL. · nlsql.com, 7 Oct 2026
Data location: For Azure tenant deployments, the maker says customer data remains in the customer's environment and is not transmitted to NLSQL servers. · nlsql.com, 7 Oct 2026
Deployment: The product deploys inside the customer's Azure subscription, and the site also says NLSQL is available through AWS Marketplace. · nlsql.com, 7 Oct 2026
Founded: NLSQL says it was founded in 2018. · nlsql.com, 7 Oct 2026
Headquarters: London, United Kingdom · nlsql.com, 28 Sept 2026
Intended users: NLSQL is designed to let team members query corporate data without SQL skills or waiting for an analyst. · nlsql.com, 7 Oct 2026
Messaging integrations: The product can be used with Microsoft Teams and Slack. · nlsql.com, 7 Oct 2026
Notable AWS listing detail: The AWS listing states that the listed $1.33 container-hour software charge is separate from AWS infrastructure costs. · aws.amazon.com, 7 Oct 2026
Query safeguards: Generated SQL passes parse, policy and literal checks, including a single-statement SELECT-only rule and schema allow-list checks. · nlsql.com, 7 Oct 2026
Security: NLSQL says its Azure deployment runs in the customer's subscription and keeps sensitive data within the customer's IT ecosystem. · nlsql.com, 7 Oct 2026
Security controls: The trust page describes per-account API tokens, IP allow-listing, private endpoints, TLS and query audit trails. · nlsql.com, 7 Oct 2026
Setup requirements: Administrators configure a database structure model and map KPI calculation methods to database columns before use. · nlsql.com, 7 Oct 2026
SQL execution: NLSQL says it returns SQL and an answer template but does not execute analytical SQL; the customer's client runs the query. · nlsql.com, 7 Oct 2026
Support: NLSQL's Customer Success team offers help getting started and answering questions. · nlsql.com, 7 Oct 2026
Trial: The site offers a free 30-day trial with no credit card required. · nlsql.com, 7 Oct 2026
Use cases: NLSQL describes healthcare use for clinicians to access real-time clinical data without SQL and without data leaving the hospital network. · nlsql.com, 7 Oct 2026
Web access: NLSQL can run as a standalone web app or web chat. · nlsql.com, 7 Oct 2026
What it does: NLSQL turns plain-English questions into SQL queries and returns data insights for analytics and reporting. · nlsql.com, 7 Oct 2026

Where NLSQL stands on Freedom251

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