The harness layer for agent products
Build your product, not the harness
Model-agnostic, fully loaded. Runtime, multi-agent orchestration, memory, tooling, policy, sandboxing, verification, and observability -- all delivered for you, so you can deliver for your customers.
TypeScriptconst run = await harness.runs.create({
input: { goal: "Process support tickets" },
workspace_id: "ws_support",
});
for await (const event of harness.runs.streamEvents(run.id)) {
console.log(`[${event.type}] ${event.data}`);
}Built for every vertical
One harness, any agent product
The same production infrastructure powers agents across personal, team, enterprise, and small business use cases.
Personal AI assistants
Calendar, email, task, and communication management agents that handle daily workflows for individual users.
Chat & collaboration agents
Team-facing agents that integrate with project tools and communication platforms to coordinate group work.
Enterprise AI agents
HRIS, executive assistance, IT ops, and customer support agents that operate at enterprise scale with compliance controls.
Small business automation
Scheduling, invoicing, customer communication, and inventory management agents that automate routine operations.
Eight pillars
Everything your agent needs to ship
A complete platform, not a point solution. Every pillar is production-grade from day one.
Runtime
Multi-provider LLM execution. OpenAI and Anthropic at launch — not locked to one vendor.
Orchestration
Durable multi-step execution with planner-worker-judge coordination. Survives crashes and deploys.
Tooling
Extensible tool registry with structured invocation, sandboxed execution, and audit logging.
Memory
Persistent first-party memory with search, versioning, and session-scoped context that outlives any single run.
Policy
Behavioral constraints, cost ceilings, and safety guardrails enforced at the infrastructure level.
Sandboxing
Isolated execution environments with network controls, resource limits, and credential injection.
Verification
Outcome correctness checking with declarative manifests, gate evaluation, and evidence packages.
Observability
Structured event logs, real-time SSE streaming, usage metering, and cost attribution per workspace and user.
Production-grade
Built for trust at scale
Multi-tenant isolation
Every customer is isolated by a server-validated authorization boundary. Your data never leaks to other tenants.
Durable execution
Runs survive process restarts, deploys, and transient failures. Every run reaches a terminal state, guaranteed.
Structured observability
Append-only event logs, real-time SSE streaming, and cursor-based replay. Full audit trail for every agent action.
Usage attribution
Token consumption tracked per workspace and subject. Know exactly what your agents cost, broken down by team or user.
Stripe for agent execution
Ship your agent product, not your infrastructure
Provider-agnostic. Eight-pillar completeness. Purpose-built for non-coding agents. Get from sign-up to your first run in under 15 minutes.