# Canonical URL Consistency Checker (`junipr/canonical-url-consistency-checker`) Actor

Check canonical URL declarations against final fetched URLs, robots signals, redirects, target status, and duplicate canonical groups.

- **URL**: https://apify.com/junipr/canonical-url-consistency-checker.md
- **Developed by:** [junipr](https://apify.com/junipr) (community)
- **Categories:** SEO tools, Automation
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $4.90 / 1,000 canonical url consistency checker page auditeds

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

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

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
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.
Actors are written with capital "A".

## 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.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Canonical URL Consistency Checker

### Store Positioning

**Store title:** Canonical URL Consistency Checker

**Short description:** Check canonical URL declarations against final fetched URLs, robots signals, redirects, target status, and duplicate canonical groups.

**SEO title:** Canonical URL Consistency Checker — technical SEO, web, and domain audit

**SEO description:** Check canonical URL declarations against final fetched URLs, robots signals, redirects, target status, and duplicate canonical groups. Use it to find crawlability, indexability, security, metadata, and page-quality issues with evidence-backed rows and audit reports.

**Categories:** SEO\_TOOLS, AUTOMATION

**Keywords:** canonical, url, consistency, checker, web/domain audit

### Pay-Per-Event Pricing

This actor uses pay-per-event pricing. Event prices include Apify platform usage; users are not expected to pay a separate platform-usage pass-through charge for the configured pricing model.

- Tier: W1 — Web/domain audit
- Primary event: `page-audited` at $0.00490 base
- Default max charge: $10.00
- Store discounts: FREE/BRONZE base, SILVER discounted, GOLD deepest approved discount

Event set:

- `actor-start`: base $0.00500, GOLD $0.00400. Canonical URL Consistency Checker: charged when actor start is completed. The price includes Apify platform usage; no separate usage pass-through is intended.
- `page-audited`: base $0.00490, GOLD $0.00392. Canonical URL Consistency Checker: charged when page audited is completed. The price includes Apify platform usage; no separate usage pass-through is intended.
- `rule-parsed`: base $0.00372, GOLD $0.00298. Canonical URL Consistency Checker: charged when rule parsed is completed. The price includes Apify platform usage; no separate usage pass-through is intended.
- `finding-emitted`: base $0.00372, GOLD $0.00298. Canonical URL Consistency Checker: charged when finding emitted is completed. The price includes Apify platform usage; no separate usage pass-through is intended.
- `audit-report-generated`: base $0.05000, GOLD $0.04000. Canonical URL Consistency Checker: charged when audit report generated is completed. The price includes Apify platform usage; no separate usage pass-through is intended.

### Public Task Concepts

- Audit Canonical URL Consistency controls on a capped public sample
- Find high-priority Canonical URL Consistency issues before release
- Validate Canonical URL Consistency evidence from supplied pages
- Prioritize Canonical URL Consistency fixes with severity and proof
- Export Canonical URL Consistency QA rows for client review

Check canonical URL declarations against final fetched URLs, robots signals, redirects, target status, and duplicate canonical groups.

### Inputs

This actor accepts the locked fields for actor 254: startUrls, sitemapUrls, htmlInputs, allowedDomains, maxPages, maxDepth, followRedirects, checkCanonicalTargetStatus, detectDuplicateCanonicalTargets, includeRobotsSignals, requestDelayMs, timeoutMs. URL and sitemap inputs use production fetch paths; supplied HTML, JSON, header, or XML records are offline inputs for controlled runs.

### Output

Dataset rows use the approved fields: sourceUrl, finalUrl, httpStatus, canonicalUrl, canonicalType, canonicalStatus, canonicalFinalUrl, canonicalHttpStatus, redirectCount, canonicalMatchesFinalUrl, duplicateCanonicalGroupId, robotsIndexable, issueCode, severity, recommendation, evidenceSnippet. The actor also writes these local report artifacts: canonical-url-consistency-report.md, canonical-audit-results.csv, duplicate-canonical-targets.csv, canonical-redirect-issues.json, missing-canonicals.csv.

### Public source provenance

Bounded canonical snapshots from https://www.apple.com/ and https://github.com/modelcontextprotocol/servers, observed 2026-07-12. Apple publishes a self canonical; the captured GitHub repository head did not expose a canonical link.

### Local run

```bash
npm test
APIFY_LOCAL_STORAGE_DIR=storage CRAWLEE_STORAGE_DIR=storage npm run smoke
```

### Billing and cost controls

This actor uses pay-per-event pricing. It charges `actor-start`, then `page-audited` before each dataset row, and `audit-report-generated` before report artifacts. `maxChargeUsd` is enforced locally and in Apify runs; when the limit is reached, uncharged rows and reports are withheld. Platform usage pass-through remains off.

# Actor input Schema

## `startUrls` (type: `array`):

Public or supplied values for startUrls; keep first runs bounded.

## `sitemapUrls` (type: `array`):

Public or supplied values for sitemapUrls; keep first runs bounded.

## `htmlInputs` (type: `array`):

Bounded supplied htmlInputs records for deterministic saved-page analysis.

## `allowedDomains` (type: `array`):

Public or supplied values for allowedDomains; keep first runs bounded.

## `maxPages` (type: `number`):

Maximum maxPages processed in one bounded run.

## `maxDepth` (type: `number`):

Maximum maxDepth processed in one bounded run.

## `followRedirects` (type: `boolean`):

Include or validate followRedirects when enabled.

## `checkCanonicalTargetStatus` (type: `boolean`):

Include or validate checkCanonicalTargetStatus when enabled.

## `detectDuplicateCanonicalTargets` (type: `boolean`):

Include or validate detectDuplicateCanonicalTargets when enabled.

## `includeRobotsSignals` (type: `boolean`):

Include or validate includeRobotsSignals when enabled.

## `requestDelayMs` (type: `number`):

Maximum requestDelayMs processed in one bounded run.

## `timeoutMs` (type: `number`):

Maximum timeoutMs processed in one bounded run.

## `maxChargeUsd` (type: `number`):

Stop before paid output would exceed this pay-per-event PPE limit.

## Actor input object example

```json
{
  "startUrls": [],
  "sitemapUrls": [],
  "htmlInputs": [
    {
      "sourceUrl": "https://www.apple.com/",
      "html": "<title>Apple</title><link rel=\"canonical\" href=\"https://www.apple.com/\"><meta name=\"robots\" content=\"index,follow\">"
    }
  ],
  "allowedDomains": [
    "www.apple.com"
  ],
  "maxPages": 1,
  "maxDepth": 0,
  "followRedirects": true,
  "checkCanonicalTargetStatus": false,
  "detectDuplicateCanonicalTargets": true,
  "includeRobotsSignals": true,
  "requestDelayMs": 0,
  "timeoutMs": 10000,
  "maxChargeUsd": 1
}
```

# 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("junipr/canonical-url-consistency-checker").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("junipr/canonical-url-consistency-checker").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 junipr/canonical-url-consistency-checker --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,junipr/canonical-url-consistency-checker"
        }
    }
}

```

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/zUIyuAguEGkGFSFVA/builds/jqkUSO8xPuA3XCWfV/openapi.json