# PostgreSQL Insert (`petr_cermak/postgresql-insert`) Actor

This act takes a crawler execution and inserts it's results into a remote PostgreSQL database.

- **URL**: https://apify.com/petr_cermak/postgresql-insert.md
- **Developed by:** [Petr Cermak](https://apify.com/petr_cermak) (community)
- **Categories:** Developer tools, Open source
- **Features:** Full permissions
- **Stats:** 39 total users, 0 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

Pay per usage

This Actor is paid per platform usage. The Actor is free to use, and you only pay for the Apify platform usage, which gets cheaper the higher subscription plan you have.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-usage

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## act-postgresql-insert

Apify act for inserting crawler results into a remote PostgreSQL table.

This act fetches all results from a specified Apifier crawler execution and inserts them into
a table in a remote PostgreSQL database.

The act does not store its state, i.e. if it crashes it restarts fetching all the results.
Therefore you should only use it for executions with low number of results.

**INPUT**

Input is a JSON object with the following properties:

```javascript
{
    // crawler executionID
    "_id": "your_execution_id",

    // PostgreSQL connection credentials
    "data": {
        "connection": {
          "host"      : "host_name",
          "port"      : "port_number",
          "user"      : "user_name",
          "password"  : "user_password",
          "database"  : "database_name"
        },
        "table": "table_name"
    }
}
```

**The act can be run with a crawler finish webhook, in such case fill just the contents of data
attribute into a crawler finish webhook data.**

Additionally to crawler results, it is also possible to specify a dataset id, to fetch the result from a dataset.

```javascript
{
    // id of dataset to fetch rows from
    "datasetId": "dataset_id",

    // PostgreSQL connection credentials
    "data": "connection_credentials"
}
```

Alternatively you can directly specify the rows to be inserted (i.e. not fetching them from crawler execution).

```javascript
{
    // rows to be inserted
    "rows": [
        {"column_1": "value_1", "column_2": "value_2"},
        {"column_1": "value_3", "column_2": "value_4"},
        ...
    ],

    // PostgreSQL connection credentials
    "data": "connection_credentials"
}
```

## Actor input object example

```json
{}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {};

// Run the Actor and wait for it to finish
const run = await client.actor("petr_cermak/postgresql-insert").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {}

# Run the Actor and wait for it to finish
run = client.actor("petr_cermak/postgresql-insert").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{}' |
apify call petr_cermak/postgresql-insert --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,petr_cermak/postgresql-insert"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/kACKqR4qoNNrSQn3g/builds/wXKwCNjKEaYkqb86k/openapi.json