01
Import your OpenAPI spec
Start from the API contract your SaaS product already maintains.
Give your product API an agent-ready surface.
0mcp turns your existing OpenAPI-described API into a secure, hosted MCP server. Your backend remains the source of truth while AI clients get a clean way to call approved product actions.
OpenAPI import
products.openapi.yaml24 operations
create_customer
search_accounts
update_subscription
SaaS API
MCP server
Agent request
call create_customer with approved auth status 200 | latency 184ms | stored payloads none
No backend rewrite
Approved operations only
Hosted MCP endpoint
A short path from spec to agent access.
02
Approve the agent surface
Choose the operations, names, and descriptions AI clients can see.
03
Ship a hosted MCP server
Connect ChatGPT, Claude, Cursor, VS Code, Codex, and other MCP clients.
Built for SaaS teams that already have customers.
Skip protocol plumbing and keep the important decisions close to your product: which actions are available, how they are described, how changes roll out, and what usage looks like in production.
Keep auth where it belongs
Use your existing API authentication model instead of rebuilding account logic for every AI client.
Version changes deliberately
Publish revisions as your API evolves, so customer workflows do not break unexpectedly.
Watch real usage
Track capability calls, errors, and latency without storing proxied request or response bodies.
Keep your engineers on product work.
MCP protocol server
Hosted for you
Endpoint selection
Controlled in 0mcp
Revisions and rollout
Built in
Usage and error visibility
Included
Turn your SaaS API into a hosted MCP server
Import your spec, approve agent actions, and connect AI clients.