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@mba-ai/core

v0.1.11

Published

Model Behavioral Adapter (MBA) framework — per-model behavior resolution, BCB/TCB tool-circuit-breaker engine, and the global MBA config service

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Links

Git

Maintainers

sorykabasorykaba

Keywords

llmlocal-llmmodel-adaptertool-circuit-breakermcpbehavioral-profilebcbai-safetyai-toolsampimbabehavioral-adapter

Readme

@mba-ai/core

The Model Behavioral Adapter (MBA) framework. It gives local LLMs per-model behavioral profiles — each model gets its own adapter (context budget, tool-circuit-breaker rules, server setup) resolved from a lineage tree of YAML files — and a real-time engine that enforces those behavioral rules on the model's tool calls.

What it does

  • Adapter resolution (B1–B4). Adapters are YAML files in a lineage folder tree (e.g. vendor/family/model.yaml). The resolver scores and merges them least-specific-first into a single resolved config per model.
  • TCB (Tool Circuit Breaker). A real-time watchdog over the model's tool calls. Rules are notice-only detectors with an escalation ladder (nudge → mask → kill). Rule classes bundle detectors; state persists in SQLite.
  • The global service. Owns the resolved config and rule state on one machine. It binds 127.0.0.1 on an OS-assigned port and writes a discovery file (<state dir>/mba/service.json) so consumers can find it.

The companion package @mba-ai/mcp-server is a thin MCP client over this service — it has zero dependency on the framework.

Installation

npm install @mba-ai/core

Running the global service

npx @mba-ai/core
# or, from a checkout:
npm run start:service

The service binds 127.0.0.1:<port> and writes a discovery file (<state dir>/mba/service.json).

Upgrading from a pre-0.1.1 install? Run mba migrate-paths once — it moves the legacy ~/.mba state and ~/models/adapters store to the OS-aware locations (local-only, works with the service stopped, never overwrites).

Environment variables

|Variable|Description|Default| |---|---|---| |MBA_BASE_DIR|State dir (service discovery + SQLite state)|OS-aware (see src/service/paths.ts)| |MBA_ADAPTER_DIR|Directory containing the adapter lineage tree|OS-aware model store (see src/service/paths.ts)| |MBA_UPSTREAM_URL|Upstream model endpoint the service fronts|—|

Development

npm install
npm run typecheck   # tsc --noEmit
npm test            # vitest run
npm run build       # emit dist/

Requires Node ≥ 20.

Related

See ADR-0084 (specification), ADR-0090 (lineage tree), and ADR-0092 (standalone framework) for the design.