Claude in Chrome: set.or.th (Stock Exchange of Thailand official website) blocked by safety API

## Summary

The official website of the Stock Exchange of Thailand (SET), https://www.set.or.th, is classified as a restricted domain by the url_hash_check/browser_extension API, blocking all Claude in Chrome operations on this domain.

Domain Information

• URL: https://www.set.or.th
• Organization: Stock Exchange of Thailand (SET) — the official national stock exchange, a public organization established by the Securities Exchange of Thailand Act
• Purpose: Official market data, listed company disclosures, regulatory announcements, IPO filings, and investor relations for Thailand's capital market

Technical Details

When Claude in Chrome attempts to navigate to set.or.th, mcpPermissions.js calls:

POST https://api.anthropic.com/api/web/url_hash_check/browser_extension
{"url": "https://www.set.or.th"}

The API returns a category1 or category2 response, which triggers the error:

"This site is not allowed due to safety restrictions."

All tools fail on this domain: navigate, javascript_tool, get_page_text, tabs_close_mcp. The tab becomes permanently inaccessible.

Impact

Investors and financial analysts using Claude in Chrome cannot access:

• Real-time SET market data and official stock quotes
• Listed company regulatory filings and earnings disclosures (56 Day Form)
• Market alerts: CC (Caution Caller), SP (Suspension), NP (Notice Pending), XD/XR/XW dates
• Official SET announcements required for compliance-grade investment research

Request

Please reclassify set.or.th (and subdomains: www.set.or.th, marketdata.set.or.th) as a safe financial/government domain in the URL classification API.

set.or.th is equivalent in nature to:

• NYSE (nyse.com)
• NASDAQ (nasdaq.com)
• London Stock Exchange (londonstockexchange.com)
• Tokyo Stock Exchange (jpx.co.jp)

These are all official national exchange websites that should be accessible for legitimate financial research.

Workaround Currently in Use

Users must rely on third-party mirrors (e.g., kaohooninternational.com) instead of the official SET source, which reduces data reliability for compliance purposes.

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Reported by a Claude Code user conducting authorized SET market research.