Today, making an LLM talk to your API means writing an MCP server — one per API. We automate that: upload your OpenAPI spec, get a hosted MCP URL that works instantly in Claude, ChatGPT, Mistral, or any compatible client.
No card required. 100 endpoints · 5,000 calls/month.
You keep your API. We translate OpenAPI → MCP in real time — auth, schemas and errors preserved.
JSON or YAML, or a public HTTPS URL. OpenAPI 3.x and Swagger 2.0 — Postman collections coming soon.
Every endpoint becomes a properly typed MCP tool. Auth is injected server-side, automatically.
// generated tool tool list_books { genre?: string author?: string q?: string } // from GET /books
Paste the MCP URL into your LLM (Claude, ChatGPT, Mistral, or any compatible client). Instant — and the URL stays stable when you update your spec.
The spec already exists. MCP boilerplate is repetitive and costly to maintain. Let us generate it — cleanly, on every release.
You write the MCP server by hand. Per API. Per version.
You provide the spec. You get the MCP URL. Done.
Zero MCP infrastructure to maintain. Your API stays yours — auth, data, logic.
Credentials never reach the LLM — they're injected server-side on every outbound call. No token, static Bearer, or OAuth2 Client Credentials — your choice.
Paste your JSON or point to an HTTPS URL. Update your spec anytime — the MCP URL stays stable, your connected LLMs don't disconnect.
Enable or disable each endpoint from the dashboard. Expose exactly what your LLM needs — nothing more.
Each MCP server is its own Authorization Server. MCP clients connect without pre-shared tokens — PKCE S256, dynamic client registration, automatic rotation.
Hosted on OVHcloud (France 🇫🇷, EU), secrets encrypted under an EU-controlled KMS. Your data and credentials never leave the European Union — and never fall under the US CLOUD Act. GDPR-native, no transatlantic data transfer to assess.
We speak MCP on the LLM side, plain HTTP/REST on your side. No agent to deploy, no SDK to integrate. Your LLM clients see tools; your API sees standard HTTP requests.
Credentials are never stored in plaintext. Argon2-hashed tokens, AES-256-GCM encryption under KMS, EU-only infrastructure.
Features already in production and ready to use today.
One MCP tool per enabled endpoint. The LLM sees every operation directly in context. Simple, explicit — optimal below 20 endpoints.
Two fixed tools — search() to explore the OpenAPI spec, execute() to call the API. Constant token cost (~1,000 tokens) regardless of API size. Recommended above 20 endpoints.
Paste your JSON or YAML spec, or point to a public HTTPS URL. OpenAPI 3.x and Swagger 2.0 supported. The spec is parsed server-side — it never enters the LLM context.
Static Bearer token encrypted server-side, injected automatically on every outbound call. The LLM never sees your credentials.
No published OpenAPI spec? Point us at the API's documentation pages (up to 5) and let an LLM (OVH AI Endpoints, gpt-oss-120b) draft one. Review and edit before creating the project — nothing is saved without your go-ahead.
Our priority: broader format support and full observability of every LLM call.
Import your Postman collections directly — no manual OpenAPI conversion.
Structured logs, OpenTelemetry traces, replays. See what each LLM called, with which arguments, and what came back.
Connect your repo or a webhook. On every push, MCP tools regenerate automatically — the URL stays stable.
Free, no card, no commitment.
Everything you need before connecting your first API.
No. Credentials are encrypted server-side (AES-256-GCM under an EU-controlled KMS) and injected on each outbound call. The LLM sees tools and results, never your tokens or raw spec.
Any MCP-compatible client — Claude, ChatGPT, Mistral, and others. You paste one stable MCP URL; it keeps working even when you update your spec.
Yes. Point corelayer0 at your API's documentation pages (up to 5) and an AI drafts an OpenAPI spec. You review and edit it before anything is saved.
Yes. Everything is hosted on OVHcloud (France, EU) with EU-only infrastructure — no transatlantic transfer, not subject to the US CLOUD Act.