The universal self-hosted gateway
connecting AI agents to any API
One gateway replaces N custom MCP servers. Sixteen-plus protocols — REST, GraphQL, gRPC, SOAP, OData, WebSocket, JSON-RPC. Encrypted credentials. Audit-ready by default. Air-gap deployable.
Auto-detects your platform (x86/ARM64) and downloads the right binary.
Quick Install
curl -fsSL https://xskyline.com/install | bash
Universal
Works on Linux & macOS, x86_64 & ARM64
Single Binary
No dependencies, just download and run
Easy Config
See examples to get started
What makes it different
Five things you won't find together anywhere else
Self-hosted zero-trust
Credentials are encrypted at rest and never leave your network. No third-party transit, no managed-cloud middleman. Air-gap deployable for HIPAA, SOC 2, PCI-DSS, FedRAMP, ISO 27001.
Only gateway covering legacy + modern protocols
REST, GraphQL, gRPC, SOAP, OData, WebSocket, JSON-RPC, XML-RPC — sixteen and counting. Auto-detected from each API's spec. Other gateways pick a side; Skyline takes both.
Source-available, commercial when you compete or scale
Run the full feature set free — self-host, modify, the lot. The only catch: you can't use it to build a competing product. Upgrade to a paid tier for that, plus the indemnity, the SLA, and the support engineer who answers in under an hour.
Code-execution mode cuts LLM cost ~97%
Multi-step agent workflows that would burn thousands of tokens of MCP back-and-forth compile to a single execution. Same result, two orders of magnitude less spend.
Unified pricing — no per-integration tax
Connect one API or fifty. Pricing is by deployment scale and support tier, not by the count of upstream services. Add an API on Friday afternoon without a procurement loop.
Who it's for
Built for the teams already wiring agents into prod
If you've been writing one MCP server per API, hand-rotating tokens across services, or stalling on a SOAP endpoint your modern stack can't reach — this is the shape that fits.
Mid-market AI engineering teams
100–1K employees · SaaS, fintech, healthtech · LLMs in production · K8s + platform team
Pain it removes
2–5 days of bespoke MCP-server work per agent-to-API integration. Credential sprawl across N teams.
Typical tier
Business · $1,499–$3,500/mo
AI consultancies & systems integrators
10–200 employees · agency model · reusable platform across client engagements
Pain it removes
Every client engagement rebuilds the same integration layer. Hard to standardize delivery.
Typical tier
Team · $499–$1,499/mo
Regulated enterprise
Fortune 500 · banking, healthcare, government · compliance-mandated self-hosted
Pain it removes
Managed-cloud MCP services are off the table. In-house builds stall on protocol coverage.
Typical tier
Enterprise · $3,500+/mo
Connect every agent to every API.
Free and source-available. Commercial tiers to build competing products or get the SLA.