# info.summary
Search and discover the public INLEVEL9 Letter archive.

# info.description
A read-only API for published INLEVEL9 Letter content. It never exposes operator, subscriber, billing, delivery, or members-only data. For full issue text, request the canonical issue URL with `Accept: text/markdown`.

# paths./api/search.get.description
Search titles and public issue text. Results contain metadata and canonical relative URLs; no authentication is required.

# paths./api/search.get.parameters[].description
Search terms in Korean, English, or Simplified Chinese.

# paths./api/search.get.responses.503.description
The public content index is temporarily unavailable.

# paths./api/mcp-manifest.get.summary
Get the INLEVEL9 Letter MCP server manifest

# paths./api/mcp-manifest.get.description
Discover the unauthenticated, read-only Model Context Protocol server and its tools.

# paths./api/mcp-manifest.get.responses.4XX.description
The manifest request could not be served.