Increase API

increase · Company

Company No Auth Free & Open API

Increase API API

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET List Account Numbers

List Account Numbers

https://api.apis.guru/v2/specs/increase.com/0.0.1/account_numbers?limit=10&cursor=example&status=active&account_id=1

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/increase.com/0.0.1/account_numbers?limit=10&cursor=example&status=active&account_id=1"

import requests
params = {
    "limit": "10",
    "cursor": "example",
    "status": "active",
    "account_id": "1"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/increase.com/0.0.1/account_numbers",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/increase.com/0.0.1/account_numbers');
url.searchParams.set('limit', '10');
url.searchParams.set('cursor', 'example');
url.searchParams.set('status', 'active');
url.searchParams.set('account_id', '1');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/increase.com/0.0.1/account_numbers")
	q := baseURL.Query()
	q.Set("limit", "10")
	q.Set("cursor", "example")
	q.Set("status", "active")
	q.Set("account_id", "1")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/increase.com/0.0.1/account_numbers")
uri.query = URI.encode_www_form({
  "limit" => "10",
  "cursor" => "example",
  "status" => "active",
  "account_id" => "1"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/increase.com/0.0.1/account_numbers?" . http_build_query([
    "limit" => "10",
    "cursor" => "example",
    "status" => "active",
    "account_id" => "1"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET List Account Statements

List Account Statements

https://api.apis.guru/v2/specs/increase.com/0.0.1/account_statements?limit=10&cursor=example&account_id=1&statement_period_start.after=example&statement_period_start.before=example&statement_period_start.on_or_after=example&statement_period_start.on_or_before=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/increase.com/0.0.1/account_statements?limit=10&cursor=example&account_id=1&statement_period_start.after=example&statement_period_start.before=example&statement_period_start.on_or_after=example&statement_period_start.on_or_before=example"

import requests
params = {
    "limit": "10",
    "cursor": "example",
    "account_id": "1",
    "statement_period_start.after": "example",
    "statement_period_start.before": "example",
    "statement_period_start.on_or_after": "example",
    "statement_period_start.on_or_before": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/increase.com/0.0.1/account_statements",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/increase.com/0.0.1/account_statements');
url.searchParams.set('limit', '10');
url.searchParams.set('cursor', 'example');
url.searchParams.set('account_id', '1');
url.searchParams.set('statement_period_start.after', 'example');
url.searchParams.set('statement_period_start.before', 'example');
url.searchParams.set('statement_period_start.on_or_after', 'example');
url.searchParams.set('statement_period_start.on_or_before', 'example');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/increase.com/0.0.1/account_statements")
	q := baseURL.Query()
	q.Set("limit", "10")
	q.Set("cursor", "example")
	q.Set("account_id", "1")
	q.Set("statement_period_start.after", "example")
	q.Set("statement_period_start.before", "example")
	q.Set("statement_period_start.on_or_after", "example")
	q.Set("statement_period_start.on_or_before", "example")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/increase.com/0.0.1/account_statements")
uri.query = URI.encode_www_form({
  "limit" => "10",
  "cursor" => "example",
  "account_id" => "1",
  "statement_period_start.after" => "example",
  "statement_period_start.before" => "example",
  "statement_period_start.on_or_after" => "example",
  "statement_period_start.on_or_before" => "example"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/increase.com/0.0.1/account_statements?" . http_build_query([
    "limit" => "10",
    "cursor" => "example",
    "account_id" => "1",
    "statement_period_start.after" => "example",
    "statement_period_start.before" => "example",
    "statement_period_start.on_or_after" => "example",
    "statement_period_start.on_or_before" => "example"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET List Account Transfers

List Account Transfers

https://api.apis.guru/v2/specs/increase.com/0.0.1/account_transfers?limit=10&cursor=example&account_id=1&created_at.after=example&created_at.before=example&created_at.on_or_after=example&created_at.on_or_before=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/increase.com/0.0.1/account_transfers?limit=10&cursor=example&account_id=1&created_at.after=example&created_at.before=example&created_at.on_or_after=example&created_at.on_or_before=example"

import requests
params = {
    "limit": "10",
    "cursor": "example",
    "account_id": "1",
    "created_at.after": "example",
    "created_at.before": "example",
    "created_at.on_or_after": "example",
    "created_at.on_or_before": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/increase.com/0.0.1/account_transfers",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/increase.com/0.0.1/account_transfers');
url.searchParams.set('limit', '10');
url.searchParams.set('cursor', 'example');
url.searchParams.set('account_id', '1');
url.searchParams.set('created_at.after', 'example');
url.searchParams.set('created_at.before', 'example');
url.searchParams.set('created_at.on_or_after', 'example');
url.searchParams.set('created_at.on_or_before', 'example');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/increase.com/0.0.1/account_transfers")
	q := baseURL.Query()
	q.Set("limit", "10")
	q.Set("cursor", "example")
	q.Set("account_id", "1")
	q.Set("created_at.after", "example")
	q.Set("created_at.before", "example")
	q.Set("created_at.on_or_after", "example")
	q.Set("created_at.on_or_before", "example")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/increase.com/0.0.1/account_transfers")
uri.query = URI.encode_www_form({
  "limit" => "10",
  "cursor" => "example",
  "account_id" => "1",
  "created_at.after" => "example",
  "created_at.before" => "example",
  "created_at.on_or_after" => "example",
  "created_at.on_or_before" => "example"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/increase.com/0.0.1/account_transfers?" . http_build_query([
    "limit" => "10",
    "cursor" => "example",
    "account_id" => "1",
    "created_at.after" => "example",
    "created_at.before" => "example",
    "created_at.on_or_after" => "example",
    "created_at.on_or_before" => "example"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

See official documentation for authentication and setup.

What can you build with Increase API?

Increase API is a Company API. Developers commonly use company APIs for:

enriching CRM records with company firmographics
building lead-generation and prospecting tools
verifying business identity and registration details
monitoring competitors and market intelligence
powering B2B data enrichment pipelines

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. Increase API is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide

Open documentation ↗