---
title: "Sources"
type: docs
weight: 1
description: >
Sources represent your different data sources that a tool can interact with.
---
A Source represents a data sources that a tool can interact with. You can define
Sources as a map in the `sources` section of your `tools.yaml` file. Typically,
a source configuration will contain any information needed to connect with and
interact with the database.
{{< notice tip >}}
Use environment variable replacement with the format ${ENV_NAME}
instead of hardcoding your secrets into the configuration file.
{{< /notice >}}
```yaml
sources:
my-cloud-sql-source:
kind: cloud-sql-postgres
project: my-project-id
region: us-central1
instance: my-instance-name
database: my_db
user: ${USER_NAME}
password: ${PASSWORD}
```
In implementation, each source is a different connection pool or client that used
to connect to the database and execute the tool.
## Available Sources
MCP directory API
We provide all the information about MCP servers via our MCP API.
curl -X GET 'https://glama.ai/api/mcp/v1/servers/googleapis/genai-toolbox'
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