v2.4 — MCP registry support is live

Ship agents and APIs
on the same runtime.

Meridian is a Node.js-native platform for deploying AI agents, MCP servers and REST APIs — with observability baked in, not bolted on.

Start building Read the docs

Free tier includes 1M tool calls / month. No credit card required.

Powering agent workloads at

HALVER LABSCogito SystemsNORDPARK vellum&coArdent AIKOVIK

Product

One platform, four primitives

Agents

Long-running agent processes with durable state, tool permissions and human-in-the-loop checkpoints. Versioned like code, observed like services.

runtime

MCP servers

Publish tools over the Model Context Protocol with one command. Auth, rate limits and schema validation are handled at the edge.

protocol

Node runtime

A hardened Node.js 22 execution environment with sub-50ms cold starts, streaming responses and per-request CPU accounting.

compute

APIs

REST and WebSocket endpoints with automatic OpenAPI specs, key management and environment promotion from staging to production.

edge

Docs

An MCP server in
eleven lines

Define a tool, register it, deploy. Meridian handles discovery, authentication and metering — your function stays a function.

  • Schema inference from TypeScript types
  • Built-in OAuth 2.1 and scoped API keys
  • Per-tool latency and error dashboards
weather-server.ts

API

Boring where it should be

Predictable REST semantics, cursor pagination, idempotency keys on every mutation.

MethodEndpointDescription
POST/v1/agentsCreate an agent deployment
GET/v1/agents/:id/runsList runs with cursor pagination
POST/v1/mcp/serversRegister an MCP server
GET/v1/usageTool-call usage for the current period
WS/v1/agents/:id/streamLive run events over WebSocket
Request an API key Provisioning takes under a minute.

Company

Small team,
serious uptime.

Meridian is built by a distributed team across Helsinki, Berlin and Porto. We run our own agent fleets on the same runtime we sell — the status page below is the one we watch.

We are hiring platform engineers who like Node.js internals more than meetings.

99.98%90-day uptime
41msmedian cold start
12engineers