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MIG Model Interface Gateway
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MIG provides a stable contract between model clients and providers with explicit reliability semantics, transport bindings, and conformance profiles.

Product

Model Interface Gateway product surface

MIG is a contract runtime. It is not another prompt library, model host, or UI framework. The product exists to keep interface semantics stable while model backends, transports, and deployment topologies evolve.

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What MIG is / is not

MIG is

  • A formal capability contract between clients and model execution planes.
  • A transport binding layer for gRPC, HTTP, and NATS with consistent semantics.
  • An operations boundary for policy, tracing, and conformance verification.

MIG is not

  • A replacement for model providers or orchestration engines.
  • A monolithic control plane that requires lock-in to one deployment pattern.
  • A vague abstraction over SDK calls without explicit reliability guarantees.

Reliability semantics in production

SemanticOperator intentRuntime behavior
At-most-oncePrefer duplicate suppression and bounded retries.Single delivery attempt envelope with idempotency guardrails.
At-least-oncePrefer completion guarantees over duplicate risk.Retry policy attached to correlation and dedupe metadata.
Exactly-once (profiled)Require profile-scoped deterministic replay controls.Conformance profile validates preconditions before enablement.

Binding model

gRPC

Typed service contracts for low-latency platform control planes and service-to-service paths.

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HTTP

API gateway and browser-friendly integration path with explicit schema versions and auth envelopes.

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NATS

Message-oriented subject model for durable event streams and asynchronous capability execution.

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