Can I use browser automation on this website? There is no universal yes or no. Check the specific service’s current terms, API rules, machine-readable instructions and technical controls for the exact account, purpose and access method you plan to use. A page that is technically reachable is not necessarily contractually available for automated access.
Start with the exact workflow
Write down what you intend to automate before reading a policy. The same site may treat a user-directed browser-use agent, a search crawler, a training crawler and an account-management script differently. Record:
- the target domain, subdomain and account (if any);
- your country or other relevant jurisdiction;
- whether you will use a normal browser, a documented API or another interface;
- the purpose: retrieval for a person, indexing, price monitoring, training, testing or account actions;
- expected request volume, rate and schedule;
- what data you will copy, retain, publish or send to another service.
Keep a dated copy or note of the terms and permissions you relied on. Recheck when the workflow, volume, account or destination changes.
Read the current Terms of Service and linked policies
Open the site’s general terms, acceptable-use policy, privacy policy and any policy linked under “automation,” “scraping,” “robots,” “API,” or “developer.” Search within each document for these words:
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- automated, bot, robot, crawler, scrape, crawl and data mining;
- access, copy, reproduce, collect, export, store and redistribute;
- reverse engineer, circumvent, bypass, evade and rate limit;
- account sharing, identity, impersonation, credentials and authorization;
- commercial use, resale, bulk use and service interference.
Read definitions and exceptions, not just headings. A clause may permit ordinary browsing but prohibit automated collection, or permit an API while forbidding browser scraping. Terms can also incorporate separate rules by reference, so follow every linked policy that applies to your service, plan and region.
Look for access-channel limits
Determine whether the contract permits browser access, API access, or both. If it says an API must be used for machine access, do not treat a browser session as an equivalent route. Conversely, an API key does not automatically grant permission to collect every page visible in the product.
Check identity and account language
Many policies require accurate identification, prohibit masking identity, or limit use to the named account holder. Do not share credentials, rotate identities to defeat a limit, or represent an automated client as a human if the rules forbid it.
When an API is available, read its separate rules
API documentation and API-specific terms answer questions that general website terms often do not: permitted endpoints, authentication, quotas, pagination, caching, retention, attribution and onward use. Use only the access method documented by the provider and stay within published limits.
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Google’s API terms, for example, state that API access must use documented means, prohibit misrepresenting or masking identity, and prohibit attempts to circumvent documented limits. They also impose separate restrictions on scraping API content, making permanent copies, retaining cached copies beyond allowed periods and redistributing returned content. Those are Google-specific examples, not a rule for every service; check the current terms for the particular API and its additional documentation.
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Questions to answer before writing code
- Is your endpoint and use case explicitly supported?
- What credentials are required, and may they be used by automation?
- What are the per-minute, daily and account-level quotas?
- Are retries, parallel requests or bulk endpoints restricted?
- How long may responses be cached or retained?
- May you combine, publish, sell or give the data to another model or customer?
- What happens when a quota, suspension or deletion request occurs?
Read robots.txt, but do not mistake it for permission
Fetch https://example.com/robots.txt for the exact host you plan to crawl, including relevant path rules. Note the user-agent groups, Disallow, Allow, crawl-delay and sitemap entries. Machine-readable instructions can be part of how an owner expresses preferences, and some contracts expressly require compliance.
Robots.txt is not a license and is not an authentication wall. Cloudflare’s documentation says “robots.txt compliance is voluntary” and explains that the file does not technically prevent access. A missing rule therefore does not prove permission, while a disallow rule may still be a contractual or operational signal you should respect. Owners that need enforcement can use authentication, firewalls or bot controls instead.
Record changes
Save the file, retrieval date and user-agent string you used. Rules can vary by host and can change without notice. Recheck before a large run or a materially different purpose.
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“Bot” is too broad to resolve a policy question. Cloudflare distinguishes:
| Behavior | Typical purpose | Questions to ask |
|---|---|---|
| Search | Collecting and indexing content for later answers | Does the owner allow indexing, and are rate and attribution rules specified? |
| Agent | Real-time activity for a person, including browser-use agents | Is user-directed retrieval allowed, and may the agent log in or submit actions? |
| Training | Crawling content to train or fine-tune a model | Does the owner permit model training, storage and reuse of the content? |
One client can perform more than one behavior. A search crawler that also feeds a training set may be treated differently from a narrowly scoped search bot. Cloudflare’s documentation has also described time-sensitive, configuration-dependent defaults for new domains and ad-supported pages; verify the current settings and documentation rather than relying on a past default.
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Verified identity is not a legal safe harbor
Cloudflare describes a verified bot as one that identifies itself honestly and behaves non-abusively, including obeying robots.txt, using reasonable rates and not evading owner preferences. Honest identification can help an operator make an informed decision, but it does not override a contract, copyright rule, privacy obligation or explicit block.
Never treat a bypass as authorization
CAPTCHAs, login requirements, paywalls, geofences, device checks, rate limits and bot challenges are technical controls. The fact that code can defeat one does not establish permission. Do not rotate IP addresses, spoof user agents, defeat a challenge, reuse another person’s session or otherwise evade a restriction unless the owner has clearly authorized that testing.
Separate two questions:
- Can the request succeed? This is a technical question about loading, authentication and defenses.
- May you make the request? This is answered by the contract, API rules, owner instructions and applicable law.
If a restriction is unclear and the activity matters, pause and ask the site owner for written permission or obtain advice qualified for the relevant jurisdiction.
Use a service-by-service review checklist
- Identify the domain, account, jurisdiction and intended purpose.
- Read current general terms and every linked automation, scraping, API and acceptable-use policy.
- Search for automated access, collection, copying, identity, circumvention, account and rate-limit language.
- Check whether the documented API is mandatory or offers different rights from browser access.
- Inspect API quotas, credentials, caching, retention and onward-use restrictions.
- Read robots.txt and other machine-readable directives for the exact host.
- List technical controls such as login, CAPTCHA, paywall, rate limit and geofence; do not bypass them.
- Classify the behavior as user-directed agent activity, search, training or another purpose.
- Set a conservative rate, identify the client honestly and collect only what you need.
- Save the policy versions, dates, permission records, code configuration and data-retention decision.
- Recheck before increasing volume, adding accounts, changing purpose or distributing results.
Common situations and the safer response
“The page is public, so scraping is allowed.”
Public visibility answers who can view a page, not whether automated collection, copying or redistribution is permitted. Read the terms and owner instructions and limit collection to an authorized purpose.
“robots.txt allows my user agent.”
That may be one signal, not a contract. Confirm that the terms allow your purpose and access channel, then follow rate and data-use requirements.
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“There is an API key, so I can archive everything.”
An API key authenticates a request; it does not erase endpoint, quota, retention or redistribution rules. Read the API’s additional terms.
“The CAPTCHA can be solved automatically.”
Do not infer consent from technical success. Treat the challenge as a restriction and seek authorization before proceeding.
“My agent acts for a real user.”
User direction may distinguish an agent from a crawler, but it does not automatically permit login, purchases, form submissions, data retention or actions prohibited by the site.
Reliability, privacy and operational controls
- Use the lowest request rate that completes the job; add backoff for documented transient errors.
- Honor published quotas and stop on repeated authorization, CAPTCHA or policy responses.
- Minimize personal data, encrypt credentials, restrict logs and define a deletion period.
- Keep a provenance record showing URL, timestamp, account, purpose and policy version.
- Do not publish another person’s private information merely because automation collected it.
- Provide a contact and removal path when your indexing or monitoring affects site owners.
These controls reduce operational risk; they do not replace permission or legal analysis.
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What this checklist cannot decide
Terms, robots directives and technical controls vary by service and change over time. They also do not settle every copyright, privacy, computer-misuse or contract question in every jurisdiction. When the workflow involves sensitive data, high volume, account actions, model training or a disputed restriction, obtain permission or advice from a qualified professional instead of relying on a generic rule.
Frequently Asked Questions
Does a robots.txt disallow automatically make automation illegal?
No. It is a machine-readable instruction and may be contractually relevant, but it is not itself a universal law or technical access-control system. Check the site’s terms and applicable law.
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Is using an official API always safer than browser automation?
An official API supplies a documented channel, but you still must follow its quotas, credentials, retention, caching and onward-use terms.
What should I do if the policy is ambiguous?
Stop the disputed activity, preserve the relevant wording and ask the owner for written permission or seek advice qualified for the applicable jurisdiction.
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