Show HN: Hermes – RyanAir price API with historical data

Category: other

Tags: flight-prices, rest-api, mcp-server, scraping, openapi

Score: 6.7/10 (Innovation: 7, Technical: 7, Documentation: 8, Utility: 6)

Hermes is an unofficial REST API and MCP server that scrapes Ryanair flight prices and maintains a historical time series of 118M+ fare observations, enabling price trend queries and drop detection. It wraps undocumented Ryanair endpoints behind a versioned OpenAPI 3.1 contract and offers an MCP interface for AI assistants, which is a novel combination for this niche.

Target audience: travel app developers, data scientists, AI assistant users

Repository: https://hermes.brinkhorst.dev/

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