Blockers
Where websites make agent work stop.
Each blocker page explains the friction in plain language, lists affected site-task observations, and links the measured evidence trail.
Blocker coverage
49 active blockers- 8,401
- site-task rows
- 9,590 observations
- observations
Last verified Jul 8, 2026.
Measured friction
Blockers ranked by affected site-tasks
public_url_verified
public url verified
The task repeatedly runs into public url verified, which changes the expected agent path or prevents a clear final state.
final_action_requires_human
final action requires human
The task repeatedly runs into final action requires human, which changes the expected agent path or prevents a clear final state.
login_required_for_final_action
login required for final action
The task repeatedly runs into login required for final action, which changes the expected agent path or prevents a clear final state.
payment_or_fee_context
payment or fee context
The task repeatedly runs into payment or fee context, which changes the expected agent path or prevents a clear final state.
login_required
login walls
The site requires account authentication before the task can be measured or completed.
site_access_denied
site access denied
The task repeatedly runs into site access denied, which changes the expected agent path or prevents a clear final state.
http_403
http 403
The task repeatedly runs into http 403, which changes the expected agent path or prevents a clear final state.
sparse_public_text
sparse public text
The task repeatedly runs into sparse public text, which changes the expected agent path or prevents a clear final state.
hidden_modal
hidden or obstructing modals
A modal, interstitial, or overlay obscures the task path or changes the expected controls.
human_handoff_required
required human handoff
The task reaches a step where the account holder, support staff, or another human must act.
bot_blocked
bot detection blocks
The task stops because the site classifies the automated session as unwanted automation.
dynamic_dom_unstable
unstable page controls
Important controls moved, re-rendered, or changed labels during the run.
2fa_user_present
two-factor checks that need the user present
The site asks for a one-time code, device approval, or another second factor that only the account holder should complete.
forced_account_creation
forced account creation
The task cannot proceed without creating or upgrading an account.
hidden_fee
fees revealed late
The final cost or obligation appears late enough that the agent cannot treat earlier totals as reliable.
payment_3ds_user_present
payment approval checks
The task reaches a bank, card, or wallet approval step that must be confirmed by the user.
http_429
http 429
The task repeatedly runs into http 429, which changes the expected agent path or prevents a clear final state.
rate_limited
rate limited
The task repeatedly runs into rate limited, which changes the expected agent path or prevents a clear final state.
price_mismatch
price mismatches
Prices or totals differ between discovery, cart, checkout, or confirmation surfaces.
policy_unparseable
unclear policy text
The relevant policy exists, but its language or structure is too unclear to support a reliable agent decision.
captcha
CAPTCHA checks
The site requires a human verification step before the task can continue.
http_401
http 401
The task repeatedly runs into http 401, which changes the expected agent path or prevents a clear final state.
payment_authorization
payment authorization
The task repeatedly runs into payment authorization, which changes the expected agent path or prevents a clear final state.
confirmation_email_missing
missing confirmation emails
The task depends on a confirmation message that was not available during the observation window.
http_503
http 503
The task repeatedly runs into http 503, which changes the expected agent path or prevents a clear final state.
site_unavailable_or_bot_defense
site unavailable or bot defense
The task repeatedly runs into site unavailable or bot defense, which changes the expected agent path or prevents a clear final state.
support_handoff_available
support handoff available
The task repeatedly runs into support handoff available, which changes the expected agent path or prevents a clear final state.
account_or_portal_handoff
account or portal handoff
The task repeatedly runs into account or portal handoff, which changes the expected agent path or prevents a clear final state.
policy_or_pricing_language_present
policy or pricing language present
The task repeatedly runs into policy or pricing language present, which changes the expected agent path or prevents a clear final state.
public_lookup_or_start_flow_available
public lookup or start flow available
The task repeatedly runs into public lookup or start flow available, which changes the expected agent path or prevents a clear final state.
dark_pattern_cancel
retention or cancellation friction
The task is slowed by confusing retention prompts, repeated confirmations, or unclear final-state language.
navigation_failed
navigation failed
The task repeatedly runs into navigation failed, which changes the expected agent path or prevents a clear final state.
account_or_booking_handoff
account or booking handoff
The task repeatedly runs into account or booking handoff, which changes the expected agent path or prevents a clear final state.
developer_docs_available
developer docs available
The task repeatedly runs into developer docs available, which changes the expected agent path or prevents a clear final state.
document_upload_required
document upload required
The task repeatedly runs into document upload required, which changes the expected agent path or prevents a clear final state.
eligibility_rules_required
eligibility rules required
The task repeatedly runs into eligibility rules required, which changes the expected agent path or prevents a clear final state.
final_request_requires_human
final request requires human
The task repeatedly runs into final request requires human, which changes the expected agent path or prevents a clear final state.
final_submission_requires_human
final submission requires human
The task repeatedly runs into final submission requires human, which changes the expected agent path or prevents a clear final state.
llms_index_available
llms index available
The task repeatedly runs into llms index available, which changes the expected agent path or prevents a clear final state.
login_optional_for_docs
login optional for docs
The task repeatedly runs into login optional for docs, which changes the expected agent path or prevents a clear final state.
official_government_page
official government page
The task repeatedly runs into official government page, which changes the expected agent path or prevents a clear final state.
patient_information_required
patient information required
The task repeatedly runs into patient information required, which changes the expected agent path or prevents a clear final state.
payment_required
payment required
The task repeatedly runs into payment required, which changes the expected agent path or prevents a clear final state.
permit_type_branching
permit type branching
The task repeatedly runs into permit type branching, which changes the expected agent path or prevents a clear final state.
policy_or_booking_language_present
policy or booking language present
The task repeatedly runs into policy or booking language present, which changes the expected agent path or prevents a clear final state.
public_appointment_entrypoint_available
public appointment entrypoint available
The task repeatedly runs into public appointment entrypoint available, which changes the expected agent path or prevents a clear final state.
public_docs_available
public docs available
The task repeatedly runs into public docs available, which changes the expected agent path or prevents a clear final state.
public_instructions_available
public instructions available
The task repeatedly runs into public instructions available, which changes the expected agent path or prevents a clear final state.
search_available
search available
The task repeatedly runs into search available, which changes the expected agent path or prevents a clear final state.