Pricing

$0.01 / completed report

Try for free

Go to Apify Store

Apify output contract checks by Check Charlie

Try for free

Check up to 20 supplied JSON rows for missing fields, incorrect types, duplicate IDs and timestamp inconsistencies. Exact failing rows in JSON and Markdown. Deterministic checks, no AI model or target Actor calls. $0.01/completed report; no certification.

Pricing

$0.01 / completed report

Rating

5.0

(1)

Developer

Automatron

Actor stats

Bookmarked

Total users

Monthly active users

5 days ago

Last modified

Categories

You can access the Apify output contract checks by Check Charlie programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

1from apify_client import ApifyClient
2
3# Initialize the ApifyClient with your Apify API token
4# Replace '<YOUR_API_TOKEN>' with your token.
5client = ApifyClient("<YOUR_API_TOKEN>")
6
7# Prepare the Actor input
8run_input = { "bundle": {
9        "schemaVersion": 1,
10        "actorUrl": "https://apify.com/example/demo",
11        "declaredBuild": "demo-1",
12        "contract": {
13            "fields": [
14                {
15                    "path": "id",
16                    "type": "string",
17                    "required": True,
18                    "unique": True,
19                },
20                {
21                    "path": "views",
22                    "type": "number",
23                    "required": True,
24                },
25                {
26                    "path": "observedAt",
27                    "type": "string",
28                    "required": True,
29                    "timestamp": True,
30                },
31            ],
32            "maxItems": 20,
33        },
34        "sample": [
35            {
36                "id": "fictional-1",
37                "views": 12,
38                "observedAt": "2026-10-01T09:00:00Z",
39            },
40            {
41                "id": "fictional-1",
42                "views": "14",
43                "observedAt": "not-a-date",
44            },
45        ],
46    } }
47
48# Run the Actor and wait for it to finish
49run = client.actor("automatron/check-charlie-output-qa").call(run_input=run_input)
50
51# Fetch and print Actor results from the run's dataset (if there are any)
52print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
53for item in client.dataset(run.default_dataset_id).iterate_items():
54    print(item)
55
56# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

Apify output contract checks by Check Charlie API in Python

The Apify API client for Python is the official library that allows you to use Apify output contract checks by Check Charlie API in Python, providing convenience functions and automatic retries on errors.

Install the apify-client

$pip install apify-client

Other API clients include:

Apify output contract checks by Check Charlie API in JavaScript

Apify output contract checks by Check Charlie API through CLI

Apify output contract checks by Check Charlie OpenAPI definition

Apify output contract checks by Check Charlie API

Scraper Results Checker

drobnikj/check-crawler-results

This actor checks results from Apify's scrapers or any other actor that stores its result to a dataset, and sends a notification if there are errors. It's designed to run from webhook.

Jakub Drobník

Python Example

apify/python-example

Example Actor written in Python, showing how to read the Actor input and push to the Actor's default dataset.

Apify

161

5.0

(1)

Apify Store Scraper (Incl Inputs & Outputs)

assmblr/apify-store-scraper-incl-inputs-outputs

Discover and compare actors across the Apify Store in one run. This actor fetches the public catalog and can also scrape actor input and output schemas so you know exactly what each actor expects and returns. No browser required.

Assmblr

CSV & JSON Data Quality Profiler

q_services/csv-json-data-quality-profiler

Profile CSV, JSON and JSONL files for missing fields, duplicates, mixed types, cardinality and numeric/string statistics.

Q Services

Apify Actor Run Monitor: Empty Output Alerts

davidbenittah/apify-run-output-health-monitor

Check up to 50 Apify Actors and find the ones that are quietly broken: no recent run, a failed or aborted run, a failure rate above your threshold, a successful run with an empty dataset, or output missing a required field. One health row per Actor, plus a summary.

David

Scraper Output Monitor | Silent Failure & Drift Alerts

broomwagon/scraper-output-monitor

Catch the day your scrape silently breaks. Point it at any scraper's dataset and get one verdict per run: fields that emptied out, fields that vanished, types that changed, volumes that collapsed, all judged against your own rolling baseline. Deterministic, stateless, priced per run not per row.

Brandon Mensing

AI Web Scraper — Any URL to JSON by Prompt ✅ No Code

neuralverge/neuralverge-ai-extract

Extract structured data from any URL with a natural-language prompt — no code, no selectors, no LLM API key. Add an optional JSON Schema for an exact output shape. Structured JSON out, MCP-ready. You pay per completed extraction — matched or not; failed runs are never charged.

NeuralVerge

5.0

(1)

Car Info & Safety Check: VIN Decoder & Recalls

scrapemint/car-safety-check

Check any car for known safety problems and get its full details: make, model, year, engine, gearbox, where it was built. Paste one car ID number (VIN) or thousands at once, or just enter make, model and year. Official US government data. No API key needed.

Ken M

OIG Exclusion Check: Screen NPIs Against the LEIE

overlookdata/npimcp-oig-exclusion-check

Screen a roster of NPIs against the HHS OIG exclusion list (LEIE). One row per NPI: excluded yes/no, exclusion type, date, and plain-English reason. Schedule it monthly for recurring re-screening. $3 per 1,000 NPIs checked.

Aaron Melton

Litigation Check — Company Litigation History Screener

zinin/litigation-check

Review bounded US federal docket-party matches and Poland SAOS full-text mentions for submitted companies. Get cited source records, confidence, gaps, failure truth, billing metadata, and a manual verification action. Not legal advice, identity resolution, or litigation clearance.