| What it does | The interoperability layer for AI-enabled websites
| Market holiday and status APIs for financial markets
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Open source
| Freemium
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| Pricing | Free and open source
| Free: 10 API calls/day. Bank & Currency Holidays: $99/mo with 100,000 API calls/day. Exchange Trading & Settlement Holidays: $99/mo with 100,000 API calls/day. All-in-one: $169/mo with 100,000 API calls/day. 15% discount available on yearly plans.
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| Key features | - Multi-protocol support - projects to MCP, ACP, AP2, NLWeb, REST, GraphQL, OpenAPI and feeds
- AI Readiness Validator - scores site readiness from 0 to 100 with per-capability checks
- Discovery network - agents can discover AI-ready sites by capability or type
- OAuth2 with PKCE support for secure authentication
- SDKs in 8 languages - TypeScript, JavaScript, React, Python, PHP, Go, .NET and Ruby
- WordPress plugin for auto-generating AI2Web manifests
- Chrome extension for checking any site's AI readiness instantly
- SSRF protection for all outbound requests
- Supports llms.txt and agent.json formats for backwards compatibility
| - REST API with JSON and CSV formats
- Live market open/close status for all exchanges
- Historical and forward holiday dates
- MCP server for AI agents
- Dashboard CSV downloads
- Coverage of 50 currencies and 61 exchanges
- Daily data updates
- Observed vs. original dates for settlement logic
- Half-day and early close times flagged
- Client libraries for Python, Java, MATLAB, Excel, Node.js, and R
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| What makes it different | - Describe your website once in a single manifest, projects automatically to all major AI protocols
- No vendor lock-in and no per-vendor rebuilds required
- Built-in safety by construction - high-risk actions always preview before running
- Free and open source with CC-BY 4.0 spec and MIT licensed SDKs
- Works across Claude, ChatGPT and any MCP client without per-vendor work
| - Data sourced from central banks, exchanges and official government sources, reviewed daily
- Hosted MCP server allows AI assistants like Cursor and Claude to query calendars directly
- No-code CSV downloads from dashboard for non-developers
- Specialized for financial markets with 69 financial centres covered
- Covers all holiday types affecting financial settlement
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 12 ▲ +1 (up) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 9 | 0 |
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| Citation Flow (Majestic) | 19 | 0 |
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| Referring domains (Majestic) | 61 | 0 |
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AI2Web
TradingCalendars.com