> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://apidocs.polytomic.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://apidocs.polytomic.com/_mcp/server.

# Get Connection Type

GET https://app.polytomic.com/api/connection_types/{id}

Returns the JSON schema for a connection type.

This schema is intended for building forms or validating configuration payloads
client-side. It describes the structure Polytomic expects when you create or
update a connection of the given type.

The response is metadata about the shape of the configuration, not a live
connection instance and not a set of current credential values.

Reference: https://apidocs.polytomic.com/api-reference/connections/get-connection-type-schema

## Authentication

- `Authorization` header (basic auth, required) — This is the Polytomic deployment key (on-premises only)
- `Authorization` header (bearer token, required) — This is the Polytomic API key

## Request

### Path parameters

- `id` (string, required) — Connection type identifier (e.g. postgresql, salesforce, hubspot).

## Response

### 200

OK

- `$anchor` (string, optional)
- `$comment` (string, optional)
- `$defs` (map from string to JsonschemaSchema, optional)
- `$dynamicRef` (string, optional)
- `$id` (string, optional)
- `$ref` (string, optional)
- `$schema` (string, optional)
- `additionalProperties` (JsonschemaSchema, optional)
- `allOf` (list of JsonschemaSchema, optional)
- `anyOf` (list of JsonschemaSchema, optional)
- `const` (any, optional)
- `contains` (JsonschemaSchema, optional)
- `contentEncoding` (string, optional)
- `contentMediaType` (string, optional)
- `contentSchema` (JsonschemaSchema, optional)
- `default` (any, optional)
- `dependentRequired` (map from string to list of string, optional)
- `dependentSchemas` (map from string to JsonschemaSchema, optional)
- `deprecated` (boolean, optional)
- `description` (string, optional)
- `else` (JsonschemaSchema, optional)
- `enum` (list of any, optional)
- `examples` (list of any, optional)
- `exclusiveMaximum` (string, optional)
- `exclusiveMinimum` (string, optional)
- `format` (string, optional)
- `if` (JsonschemaSchema, optional)
- `items` (JsonschemaSchema, optional)
- `maxContains` (integer, optional, nullable)
- `maxItems` (integer, optional, nullable)
- `maxLength` (integer, optional, nullable)
- `maxProperties` (integer, optional, nullable)
- `maximum` (string, optional)
- `minContains` (integer, optional, nullable)
- `minItems` (integer, optional, nullable)
- `minLength` (integer, optional, nullable)
- `minProperties` (integer, optional, nullable)
- `minimum` (string, optional)
- `multipleOf` (string, optional)
- `not` (JsonschemaSchema, optional)
- `oneOf` (list of JsonschemaSchema, optional)
- `pattern` (string, optional)
- `patternProperties` (map from string to JsonschemaSchema, optional)
- `prefixItems` (list of JsonschemaSchema, optional)
- `properties` (V2OrderedMapStringGithubComInvopopJsonschemaSchema, optional)
- `propertyNames` (JsonschemaSchema, optional)
- `readOnly` (boolean, optional)
- `required` (list of string, optional)
- `then` (JsonschemaSchema, optional)
- `title` (string, optional)
- `type` (string, optional)
- `uniqueItems` (boolean, optional)
- `writeOnly` (boolean, optional)

## Errors

### 401 Unauthorized Error

Unauthorized

- `code` (integer, optional) — Application-specific error code.
- `context` (map from string to any, optional) — Application context.
- `error` (string, optional) — Error message.
- `status` (string, optional) — Status text.

### 404 Not Found Error

Not Found

- `key` (string, optional)
- `message` (string, optional)
- `metadata` (map from string to any, optional)
- `status` (integer, optional)

### 500 Internal Server Error

Internal Server Error

- `key` (string, optional)
- `message` (string, optional)
- `metadata` (map from string to any, optional)
- `status` (integer, optional)

## Types

### JsonschemaSchema

- `$anchor` (string, optional)
- `$comment` (string, optional)
- `$defs` (map from string to JsonschemaSchema, optional)
- `$dynamicRef` (string, optional)
- `$id` (string, optional)
- `$ref` (string, optional)
- `$schema` (string, optional)
- `additionalProperties` (JsonschemaSchema, optional)
- `allOf` (list of JsonschemaSchema, optional)
- `anyOf` (list of JsonschemaSchema, optional)
- `const` (any, optional)
- `contains` (JsonschemaSchema, optional)
- `contentEncoding` (string, optional)
- `contentMediaType` (string, optional)
- `contentSchema` (JsonschemaSchema, optional)
- `default` (any, optional)
- `dependentRequired` (map from string to list of string, optional)
- `dependentSchemas` (map from string to JsonschemaSchema, optional)
- `deprecated` (boolean, optional)
- `description` (string, optional)
- `else` (JsonschemaSchema, optional)
- `enum` (list of any, optional)
- `examples` (list of any, optional)
- `exclusiveMaximum` (string, optional)
- `exclusiveMinimum` (string, optional)
- `format` (string, optional)
- `if` (JsonschemaSchema, optional)
- `items` (JsonschemaSchema, optional)
- `maxContains` (integer, optional, nullable)
- `maxItems` (integer, optional, nullable)
- `maxLength` (integer, optional, nullable)
- `maxProperties` (integer, optional, nullable)
- `maximum` (string, optional)
- `minContains` (integer, optional, nullable)
- `minItems` (integer, optional, nullable)
- `minLength` (integer, optional, nullable)
- `minProperties` (integer, optional, nullable)
- `minimum` (string, optional)
- `multipleOf` (string, optional)
- `not` (JsonschemaSchema, optional)
- `oneOf` (list of JsonschemaSchema, optional)
- `pattern` (string, optional)
- `patternProperties` (map from string to JsonschemaSchema, optional)
- `prefixItems` (list of JsonschemaSchema, optional)
- `properties` (V2OrderedMapStringGithubComInvopopJsonschemaSchema, optional)
- `propertyNames` (JsonschemaSchema, optional)
- `readOnly` (boolean, optional)
- `required` (list of string, optional)
- `then` (JsonschemaSchema, optional)
- `title` (string, optional)
- `type` (string, optional)
- `uniqueItems` (boolean, optional)
- `writeOnly` (boolean, optional)

### V2OrderedMapStringGithubComInvopopJsonschemaSchema

## Examples

**Response**

```json
{
  "$anchor": "string",
  "$comment": "string",
  "$defs": {},
  "$dynamicRef": "string",
  "$id": "string",
  "$ref": "string",
  "$schema": "string",
  "additionalProperties": {
    "$anchor": "string",
    "$comment": "string",
    "$defs": {},
    "$dynamicRef": "string",
    "$id": "string",
    "$ref": "string",
    "$schema": "string",
    "allOf": [
      null
    ],
    "anyOf": [
      null
    ],
    "contentEncoding": "string",
    "contentMediaType": "string",
    "dependentRequired": {},
    "dependentSchemas": {},
    "deprecated": true,
    "description": "string",
    "enum": [
      null
    ],
    "examples": [
      null
    ],
    "exclusiveMaximum": "string",
    "exclusiveMinimum": "string",
    "format": "string",
    "maxContains": 1,
    "maxItems": 1,
    "maxLength": 1,
    "maxProperties": 1,
    "maximum": "string",
    "minContains": 1,
    "minItems": 1,
    "minLength": 1,
    "minProperties": 1,
    "minimum": "string",
    "multipleOf": "string",
    "oneOf": [
      null
    ],
    "pattern": "string",
    "patternProperties": {},
    "prefixItems": [
      null
    ],
    "properties": {},
    "readOnly": true,
    "required": [
      "string"
    ],
    "title": "string",
    "type": "string",
    "uniqueItems": true,
    "writeOnly": true
  },
  "allOf": [
    {
      "$anchor": "string",
      "$comment": "string",
      "$defs": {},
      "$dynamicRef": "string",
      "$id": "string",
      "$ref": "string",
      "$schema": "string",
      "allOf": [
        null
      ],
      "anyOf": [
        null
      ],
      "contentEncoding": "string",
      "contentMediaType": "string",
      "dependentRequired": {},
      "dependentSchemas": {},
      "deprecated": true,
      "description": "string",
      "enum": [
        null
      ],
      "examples": [
        null
      ],
      "exclusiveMaximum": "string",
      "exclusiveMinimum": "string",
      "format": "string",
      "maxContains": 1,
      "maxItems": 1,
      "maxLength": 1,
      "maxProperties": 1,
      "maximum": "string",
      "minContains": 1,
      "minItems": 1,
      "minLength": 1,
      "minProperties": 1,
      "minimum": "string",
      "multipleOf": "string",
      "oneOf": [
        null
      ],
      "pattern": "string",
      "patternProperties": {},
      "prefixItems": [
        null
      ],
      "properties": {},
      "readOnly": true,
      "required": [
        "string"
      ],
      "title": "string",
      "type": "string",
      "uniqueItems": true,
      "writeOnly": true
    }
  ],
  "anyOf": [
    {
      "$anchor": "string",
      "$comment": "string",
      "$defs": {},
      "$dynamicRef": "string",
      "$id": "string",
      "$ref": "string",
      "$schema": "string",
      "allOf": [
        null
      ],
      "anyOf": [
        null
      ],
      "contentEncoding": "string",
      "contentMediaType": "string",
      "dependentRequired": {},
      "dependentSchemas": {},
      "deprecated": true,
      "description": "string",
      "enum": [
        null
      ],
      "examples": [
        null
      ],
      "exclusiveMaximum": "string",
      "exclusiveMinimum": "string",
      "format": "string",
      "maxContains": 1,
      "maxItems": 1,
      "maxLength": 1,
      "maxProperties": 1,
      "maximum": "string",
      "minContains": 1,
      "minItems": 1,
      "minLength": 1,
      "minProperties": 1,
      "minimum": "string",
      "multipleOf": "string",
      "oneOf": [
        null
      ],
      "pattern": "string",
      "patternProperties": {},
      "prefixItems": [
        null
      ],
      "properties": {},
      "readOnly": true,
      "required": [
        "string"
      ],
      "title": "string",
      "type": "string",
      "uniqueItems": true,
      "writeOnly": true
    }
  ],
  "contains": {
    "$anchor": "string",
    "$comment": "string",
    "$defs": {},
    "$dynamicRef": "string",
    "$id": "string",
    "$ref": "string",
    "$schema": "string",
    "allOf": [
      null
    ],
    "anyOf": [
      null
    ],
    "contentEncoding": "string",
    "contentMediaType": "string",
    "dependentRequired": {},
    "dependentSchemas": {},
    "deprecated": true,
    "description": "string",
    "enum": [
      null
    ],
    "examples": [
      null
    ],
    "exclusiveMaximum": "string",
    "exclusiveMinimum": "string",
    "format": "string",
    "maxContains": 1,
    "maxItems": 1,
    "maxLength": 1,
    "maxProperties": 1,
    "maximum": "string",
    "minContains": 1,
    "minItems": 1,
    "minLength": 1,
    "minProperties": 1,
    "minimum": "string",
    "multipleOf": "string",
    "oneOf": [
      null
    ],
    "pattern": "string",
    "patternProperties": {},
    "prefixItems": [
      null
    ],
    "properties": {},
    "readOnly": true,
    "required": [
      "string"
    ],
    "title": "string",
    "type": "string",
    "uniqueItems": true,
    "writeOnly": true
  },
  "contentEncoding": "string",
  "contentMediaType": "string",
  "contentSchema": {
    "$anchor": "string",
    "$comment": "string",
    "$defs": {},
    "$dynamicRef": "string",
    "$id": "string",
    "$ref": "string",
    "$schema": "string",
    "allOf": [
      null
    ],
    "anyOf": [
      null
    ],
    "contentEncoding": "string",
    "contentMediaType": "string",
    "dependentRequired": {},
    "dependentSchemas": {},
    "deprecated": true,
    "description": "string",
    "enum": [
      null
    ],
    "examples": [
      null
    ],
    "exclusiveMaximum": "string",
    "exclusiveMinimum": "string",
    "format": "string",
    "maxContains": 1,
    "maxItems": 1,
    "maxLength": 1,
    "maxProperties": 1,
    "maximum": "string",
    "minContains": 1,
    "minItems": 1,
    "minLength": 1,
    "minProperties": 1,
    "minimum": "string",
    "multipleOf": "string",
    "oneOf": [
      null
    ],
    "pattern": "string",
    "patternProperties": {},
    "prefixItems": [
      null
    ],
    "properties": {},
    "readOnly": true,
    "required": [
      "string"
    ],
    "title": "string",
    "type": "string",
    "uniqueItems": true,
    "writeOnly": true
  },
  "dependentRequired": {},
  "dependentSchemas": {},
  "deprecated": true,
  "description": "string",
  "else": {
    "$anchor": "string",
    "$comment": "string",
    "$defs": {},
    "$dynamicRef": "string",
    "$id": "string",
    "$ref": "string",
    "$schema": "string",
    "allOf": [
      null
    ],
    "anyOf": [
      null
    ],
    "contentEncoding": "string",
    "contentMediaType": "string",
    "dependentRequired": {},
    "dependentSchemas": {},
    "deprecated": true,
    "description": "string",
    "enum": [
      null
    ],
    "examples": [
      null
    ],
    "exclusiveMaximum": "string",
    "exclusiveMinimum": "string",
    "format": "string",
    "maxContains": 1,
    "maxItems": 1,
    "maxLength": 1,
    "maxProperties": 1,
    "maximum": "string",
    "minContains": 1,
    "minItems": 1,
    "minLength": 1,
    "minProperties": 1,
    "minimum": "string",
    "multipleOf": "string",
    "oneOf": [
      null
    ],
    "pattern": "string",
    "patternProperties": {},
    "prefixItems": [
      null
    ],
    "properties": {},
    "readOnly": true,
    "required": [
      "string"
    ],
    "title": "string",
    "type": "string",
    "uniqueItems": true,
    "writeOnly": true
  },
  "enum": [
    null
  ],
  "examples": [
    null
  ],
  "exclusiveMaximum": "string",
  "exclusiveMinimum": "string",
  "format": "string",
  "if": {
    "$anchor": "string",
    "$comment": "string",
    "$defs": {},
    "$dynamicRef": "string",
    "$id": "string",
    "$ref": "string",
    "$schema": "string",
    "allOf": [
      null
    ],
    "anyOf": [
      null
    ],
    "contentEncoding": "string",
    "contentMediaType": "string",
    "dependentRequired": {},
    "dependentSchemas": {},
    "deprecated": true,
    "description": "string",
    "enum": [
      null
    ],
    "examples": [
      null
    ],
    "exclusiveMaximum": "string",
    "exclusiveMinimum": "string",
    "format": "string",
    "maxContains": 1,
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    "maxProperties": 1,
    "maximum": "string",
    "minContains": 1,
    "minItems": 1,
    "minLength": 1,
    "minProperties": 1,
    "minimum": "string",
    "multipleOf": "string",
    "oneOf": [
      null
    ],
    "pattern": "string",
    "patternProperties": {},
    "prefixItems": [
      null
    ],
    "properties": {},
    "readOnly": true,
    "required": [
      "string"
    ],
    "title": "string",
    "type": "string",
    "uniqueItems": true,
    "writeOnly": true
  },
  "items": {
    "$anchor": "string",
    "$comment": "string",
    "$defs": {},
    "$dynamicRef": "string",
    "$id": "string",
    "$ref": "string",
    "$schema": "string",
    "allOf": [
      null
    ],
    "anyOf": [
      null
    ],
    "contentEncoding": "string",
    "contentMediaType": "string",
    "dependentRequired": {},
    "dependentSchemas": {},
    "deprecated": true,
    "description": "string",
    "enum": [
      null
    ],
    "examples": [
      null
    ],
    "exclusiveMaximum": "string",
    "exclusiveMinimum": "string",
    "format": "string",
    "maxContains": 1,
    "maxItems": 1,
    "maxLength": 1,
    "maxProperties": 1,
    "maximum": "string",
    "minContains": 1,
    "minItems": 1,
    "minLength": 1,
    "minProperties": 1,
    "minimum": "string",
    "multipleOf": "string",
    "oneOf": [
      null
    ],
    "pattern": "string",
    "patternProperties": {},
    "prefixItems": [
      null
    ],
    "properties": {},
    "readOnly": true,
    "required": [
      "string"
    ],
    "title": "string",
    "type": "string",
    "uniqueItems": true,
    "writeOnly": true
  },
  "maxContains": 1,
  "maxItems": 1,
  "maxLength": 1,
  "maxProperties": 1,
  "maximum": "string",
  "minContains": 1,
  "minItems": 1,
  "minLength": 1,
  "minProperties": 1,
  "minimum": "string",
  "multipleOf": "string",
  "not": {
    "$anchor": "string",
    "$comment": "string",
    "$defs": {},
    "$dynamicRef": "string",
    "$id": "string",
    "$ref": "string",
    "$schema": "string",
    "allOf": [
      null
    ],
    "anyOf": [
      null
    ],
    "contentEncoding": "string",
    "contentMediaType": "string",
    "dependentRequired": {},
    "dependentSchemas": {},
    "deprecated": true,
    "description": "string",
    "enum": [
      null
    ],
    "examples": [
      null
    ],
    "exclusiveMaximum": "string",
    "exclusiveMinimum": "string",
    "format": "string",
    "maxContains": 1,
    "maxItems": 1,
    "maxLength": 1,
    "maxProperties": 1,
    "maximum": "string",
    "minContains": 1,
    "minItems": 1,
    "minLength": 1,
    "minProperties": 1,
    "minimum": "string",
    "multipleOf": "string",
    "oneOf": [
      null
    ],
    "pattern": "string",
    "patternProperties": {},
    "prefixItems": [
      null
    ],
    "properties": {},
    "readOnly": true,
    "required": [
      "string"
    ],
    "title": "string",
    "type": "string",
    "uniqueItems": true,
    "writeOnly": true
  },
  "oneOf": [
    {
      "$anchor": "string",
      "$comment": "string",
      "$defs": {},
      "$dynamicRef": "string",
      "$id": "string",
      "$ref": "string",
      "$schema": "string",
      "allOf": [
        null
      ],
      "anyOf": [
        null
      ],
      "contentEncoding": "string",
      "contentMediaType": "string",
      "dependentRequired": {},
      "dependentSchemas": {},
      "deprecated": true,
      "description": "string",
      "enum": [
        null
      ],
      "examples": [
        null
      ],
      "exclusiveMaximum": "string",
      "exclusiveMinimum": "string",
      "format": "string",
      "maxContains": 1,
      "maxItems": 1,
      "maxLength": 1,
      "maxProperties": 1,
      "maximum": "string",
      "minContains": 1,
      "minItems": 1,
      "minLength": 1,
      "minProperties": 1,
      "minimum": "string",
      "multipleOf": "string",
      "oneOf": [
        null
      ],
      "pattern": "string",
      "patternProperties": {},
      "prefixItems": [
        null
      ],
      "properties": {},
      "readOnly": true,
      "required": [
        "string"
      ],
      "title": "string",
      "type": "string",
      "uniqueItems": true,
      "writeOnly": true
    }
  ],
  "pattern": "string",
  "patternProperties": {},
  "prefixItems": [
    {
      "$anchor": "string",
      "$comment": "string",
      "$defs": {},
      "$dynamicRef": "string",
      "$id": "string",
      "$ref": "string",
      "$schema": "string",
      "allOf": [
        null
      ],
      "anyOf": [
        null
      ],
      "contentEncoding": "string",
      "contentMediaType": "string",
      "dependentRequired": {},
      "dependentSchemas": {},
      "deprecated": true,
      "description": "string",
      "enum": [
        null
      ],
      "examples": [
        null
      ],
      "exclusiveMaximum": "string",
      "exclusiveMinimum": "string",
      "format": "string",
      "maxContains": 1,
      "maxItems": 1,
      "maxLength": 1,
      "maxProperties": 1,
      "maximum": "string",
      "minContains": 1,
      "minItems": 1,
      "minLength": 1,
      "minProperties": 1,
      "minimum": "string",
      "multipleOf": "string",
      "oneOf": [
        null
      ],
      "pattern": "string",
      "patternProperties": {},
      "prefixItems": [
        null
      ],
      "properties": {},
      "readOnly": true,
      "required": [
        "string"
      ],
      "title": "string",
      "type": "string",
      "uniqueItems": true,
      "writeOnly": true
    }
  ],
  "properties": {},
  "propertyNames": {
    "$anchor": "string",
    "$comment": "string",
    "$defs": {},
    "$dynamicRef": "string",
    "$id": "string",
    "$ref": "string",
    "$schema": "string",
    "allOf": [
      null
    ],
    "anyOf": [
      null
    ],
    "contentEncoding": "string",
    "contentMediaType": "string",
    "dependentRequired": {},
    "dependentSchemas": {},
    "deprecated": true,
    "description": "string",
    "enum": [
      null
    ],
    "examples": [
      null
    ],
    "exclusiveMaximum": "string",
    "exclusiveMinimum": "string",
    "format": "string",
    "maxContains": 1,
    "maxItems": 1,
    "maxLength": 1,
    "maxProperties": 1,
    "maximum": "string",
    "minContains": 1,
    "minItems": 1,
    "minLength": 1,
    "minProperties": 1,
    "minimum": "string",
    "multipleOf": "string",
    "oneOf": [
      null
    ],
    "pattern": "string",
    "patternProperties": {},
    "prefixItems": [
      null
    ],
    "properties": {},
    "readOnly": true,
    "required": [
      "string"
    ],
    "title": "string",
    "type": "string",
    "uniqueItems": true,
    "writeOnly": true
  },
  "readOnly": true,
  "required": [
    "string"
  ],
  "then": {
    "$anchor": "string",
    "$comment": "string",
    "$defs": {},
    "$dynamicRef": "string",
    "$id": "string",
    "$ref": "string",
    "$schema": "string",
    "allOf": [
      null
    ],
    "anyOf": [
      null
    ],
    "contentEncoding": "string",
    "contentMediaType": "string",
    "dependentRequired": {},
    "dependentSchemas": {},
    "deprecated": true,
    "description": "string",
    "enum": [
      null
    ],
    "examples": [
      null
    ],
    "exclusiveMaximum": "string",
    "exclusiveMinimum": "string",
    "format": "string",
    "maxContains": 1,
    "maxItems": 1,
    "maxLength": 1,
    "maxProperties": 1,
    "maximum": "string",
    "minContains": 1,
    "minItems": 1,
    "minLength": 1,
    "minProperties": 1,
    "minimum": "string",
    "multipleOf": "string",
    "oneOf": [
      null
    ],
    "pattern": "string",
    "patternProperties": {},
    "prefixItems": [
      null
    ],
    "properties": {},
    "readOnly": true,
    "required": [
      "string"
    ],
    "title": "string",
    "type": "string",
    "uniqueItems": true,
    "writeOnly": true
  },
  "title": "string",
  "type": "string",
  "uniqueItems": true,
  "writeOnly": true
}
```

**SDK Code**

```typescript
import { PolytomicClient } from "polytomic";

async function main() {
    const client = new PolytomicClient({
        token: "YOUR_TOKEN_HERE",
        version: "X-Polytomic-Version",
    });
    await client.connections.getConnectionTypeSchema("postgresql");
}
main();

```

```python
from polytomic import Polytomic

client = Polytomic(
    token="YOUR_TOKEN_HERE",
    version="X-Polytomic-Version",
)

client.connections.get_connection_type_schema(
    id="postgresql",
)

```

```go
package example

import (
    context "context"

    client "github.com/polytomic/polytomic-go/v24/client"
    option "github.com/polytomic/polytomic-go/v24/option"
)

func do() {
    client := client.NewClient(
        option.WithToken(
            "YOUR_TOKEN_HERE",
        ),
        option.WithVersion(
            "X-Polytomic-Version",
        ),
    )
    client.Connections.GetConnectionTypeSchema(
        context.TODO(),
        "postgresql",
    )
}

```

```ruby
require 'uri'
require 'net/http'

url = URI("https://app.polytomic.com/api/connection_types/postgresql")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["X-Polytomic-Version"] = 'X-Polytomic-Version'
request.basic_auth("<username>", "<password>")

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://app.polytomic.com/api/connection_types/postgresql")
  .header("X-Polytomic-Version", "X-Polytomic-Version")
  .basicAuth("<username>", "<password>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://app.polytomic.com/api/connection_types/postgresql', [
  'headers' => [
    'X-Polytomic-Version' => 'X-Polytomic-Version',
  ],
    'auth' => ['<username>', '<password>'],
]);

echo $response->getBody();
```

```csharp
using RestSharp;
using RestSharp.Authenticators;

var client = new RestClient("https://app.polytomic.com/api/connection_types/postgresql");
client.Authenticator = new HttpBasicAuthenticator("<username>", "<password>");
var request = new RestRequest(Method.GET);
request.AddHeader("X-Polytomic-Version", "X-Polytomic-Version");

IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let credentials = Data("<username>:<password>".utf8).base64EncodedString()

let headers = [
  "X-Polytomic-Version": "X-Polytomic-Version",
  "Authorization": "Basic \(credentials)"
]

let request = NSMutableURLRequest(url: NSURL(string: "https://app.polytomic.com/api/connection_types/postgresql")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```