Hi HN. I'm one of the co-founders of 100Hires ATS. We built an MCP server on top of our REST API.

I would love HN to weigh in on whether 130 tools are too many. Big competitors have 30-40

Some details:

Three layers, from the bottom up: - REST API v2: 87 endpoints, OpenAPI 3.0 spec, Bearer auth, public docs at 100hires.com/api - MCP server: 130 tools mapping roughly 1:1 to REST endpoints, hosted at mcp.100hires.com/mcp, ~400 LOC of wrapper code - ChatGPT plugin: thin wrapper on the MCP, OAuth handled by the plugin store

Auth on the MCP: OAuth 2.1 with PKCE and Dynamic Client Registration. Tokens scoped per user, 1-hour access tokens with auto-refresh, revoked when the user leaves the workspace. Tested in Claude Desktop, Claude Code, Cursor, VS Code, Codex, Windsurf, and Zed.

Available on the free trial (but rate-limited) and on all paid plans.