Now in public beta

Any REST API,an MCP server.

Paste your OpenAPI spec. Nexus generates a fully compliant MCP server instantly — no code, no boilerplate. Your AI agents can call any REST API in seconds.

Start Building FreeSee How It Works

Free tier · No credit card required · Deploy in under 60 seconds

POST /v1/mcp/generate
200 OK
{
"status": "ok",
"mcp_server_url": "https://mcp.nexus.io/srv_kX92j",
"tools_count": 147,
"generation_ms": 3241,
"endpoints": [
"stripe_create_customer",
"stripe_list_invoices",
"stripe_get_balance",
... 144 more
]
}
2,400+
APIs Connected
< 4s
Generation Time
99.9%
Uptime SLA
How It Works

From API spec to MCP server in 3 steps

No Kubernetes. No custom code. Just paste a URL and ship.

STEP 01

Connect Your API

Paste any OpenAPI/Swagger URL or upload a spec file. Nexus reads it in seconds — REST, GraphQL, or gRPC.

STEP 02

MCP Server Generated

Nexus maps every endpoint to an MCP tool, writes the server code, and security-scans it automatically.

STEP 03

AI Agents Call It Live

Your Claude, GPT-4, or custom agent gains instant access to the full API — via natural language, no SDK needed.

Features

Built for production AI teams

Every feature your team needs to ship AI integrations at scale.

Gateway Proxy

Drop in any OpenAPI URL and watch Nexus autonomously parse, map, and deploy a production-ready MCP server in under 60 seconds.

Rate Limiting

Per-key, per-endpoint, and global rate limits. Protect upstream APIs from runaway agents without code changes.

Workflow Builder

Chain MCP tools into multi-step workflows with conditional logic, retries, and parallel execution.

Local Tunneling

Expose local dev servers to remote agents via secure tunnels. Zero-config ngrok alternative.

Analytics

Real-time request volume, latency percentiles, error rates, and cost tracking per-API and per-agent.

Webhooks

Subscribe to gateway events and push to Slack, PagerDuty, or any HTTP endpoint.

Pricing

Simple, transparent pricing

Start free. Pay as you grow. No hidden fees.

Free

$0/mo

Forever free.

Test Nexus risk-free. Perfect for personal projects and API experiments.

  • 1,000 API calls/month
  • 1 MCP server
  • MCP server generation
  • Community support
Get Started Free

Starter

$40/mo

For individuals.

For developers building production AI applications that need reliable API integrations.

  • 50,000 API calls/month
  • 5 MCP servers
  • 30-day execution logs
  • Basic webhooks
  • Email support
Subscribe
MOST POPULAR

Pro

$75/mo

Most popular.

For growing teams that need scale, integrations, and priority access.

  • 500,000 API calls/month
  • Unlimited MCP servers
  • All TRD integrations
  • 10 team seats
  • Priority support
Subscribe

Enterprise

$150/mo

For large organizations.

For teams that need dedicated infrastructure, SSO, and SLA guarantees.

  • Unlimited API calls
  • Dedicated infrastructure
  • SSO / SAML
  • RBAC + audit logs
  • 24/7 dedicated support
Subscribe

Common Questions

What is an MCP server?

MCP (Model Context Protocol) is the standard way for AI models like Claude to call external tools and APIs. An MCP server wraps any REST API and exposes it as typed tools that AI agents can discover and call automatically.

Do I need to write any code?

No. Paste your OpenAPI URL and Nexus does the rest — parsing, code generation, security scanning, and deployment. You manage it through the dashboard.

Which AI models does it work with?

Any MCP-compatible model: Claude (Anthropic), GPT-4 (via MCP adapters), and any agent built on the open MCP standard. More integrations added regularly.

Is my API data secure?

Yes. Credentials are encrypted at rest. Every MCP server is code-scanned before deployment. All calls are audit-logged. We never store request payloads — only SHA-256 hashes.

Your APIs. Your AI agents. Zero glue code.

Join developers building the next generation of AI-powered applications with Nexus.

Start Building FreeTalk to Sales

Free tier · No credit card required.