Everything you need to build on Nichify - the Vinted niche finder. API docs, MCP server, agent instructions, and PATs. If you are an AI agent (Claude, ChatGPT, Gemini), start with /agent-instructions.md.
Streamable HTTP at /mcp, spec 2025-06-18. Manifest at /mcp/manifest. Bearer nch_... auth.
Static discovery card at /.well-known/mcp.json. Points at transports, tools, and ui://nichify/... MCP Apps resources.
Authoritative machine-readable spec with camelCase operationIds and structured errors (problem+json).
Open spec ->When-to-use / when-not-to-use rules for AI agents. Explicit dos and don'ts.
Read instructions ->Step-by-step: how AI agents authenticate. Scopes, rotation, rate limits, Claude Desktop config snippet.
Read guide ->Short and full product context for agents, with FR / EN / DE / NL via Accept-Language.
Submission status on ChatGPT, Claude Desktop, and Gemini MCP registries.
View roadmap ->With a PAT from /account/keys, list the tools Nichify exposes:
curl -X POST https://nichify.app/mcp \
-H "Authorization: Bearer nch_your_token_here" \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Then run whoami to confirm your identity and scopes:
curl -X POST https://nichify.app/mcp \
-H "Authorization: Bearer nch_your_token_here" \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"whoami","arguments":{}}}'
curl https://nichify.app/api/status
curl -H "Authorization: Bearer nch_your_token_here" https://nichify.app/api/analyses
Every error response is JSON with Content-Type: application/problem+json. Branch on error.code, not error.message.