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Microsoft ASSERT

Microsoft ASSERT is a Microsoft Responsible AI evaluation harness for AI agents and LLM applications that starts from natural-language requirements or policies, generates test scenarios, runs them against a target, and writes local artifacts for inspection.

The GitHub README describes ASSERT as local-first, framework-agnostic, and trace-aware. Official materials list model endpoints through LiteLLM, agent and multi-agent systems through OpenInference, OpenTelemetry trace capture, JSON and JSONL artifacts, and a local viewer for comparing runs. Use this as a first read, not a recommendation. Open the original project before trusting details like terms, limits, privacy, cost, setup, or safety.

What it is

A spec-driven evaluation harness

ASSERT sits in the agent evaluation layer rather than the model or chatbot layer. It is built around turning written behavior expectations into generated cases, traces, scores, and reviewable run files.

Why readers may notice it

Requirements become test materials

Agent builders often need to check whether a system follows product requirements, tool-use rules, launch criteria, or other written expectations. ASSERT gives readers a concrete project to inspect for that requirements-to-evals workflow.

Availability

Repo, project site, docs, and Microsoft posts

Readers can open the GitHub repository, project site, Command Line technical post, and Microsoft Foundry Build post to inspect the setup path, example evaluation, artifacts, and stated limits.

Reader context

Why readers may notice it

As agent apps connect tools, memory, retrieval, and multi-step workflows, a generic benchmark may not answer whether a specific agent follows the written behavior expected of it. ASSERT is useful to inspect because it starts from the behavior description itself.

Reporting note

What the source pages list

The README says ASSERT derives behavior categories from natural-language specifications, generates single-turn and multi-turn test cases, runs them against targets such as hosted models, callable wrappers, and OpenTelemetry-traced agents, then uses a model judge to score conversations against the provided policies.

Source context

What readers can inspect

The official materials list LiteLLM model-endpoint support, OpenInference integration for agent systems, example paths including a LangGraph travel planner, local JSON and JSONL run artifacts, trace evidence, aggregate metrics, judge rationales, and a bundled viewer.

Before using

What readers may want to review

Current setup steps, Python version support, dependency extras, provider credentials, and example configuration before trying a run.

Which target system, judge model, model provider, trace collector, and external services would receive prompts, responses, traces, metadata, or evaluation artifacts.

The quality of the written behavior definition, because narrow and explicit requirements are easier to turn into useful scenarios than vague ones.

Generated cases, trace evidence, policy citations, judge rationales, and possible false positives or false negatives before using a result to make decisions.

The project's stated limits: synthetic interactions can miss production-only failures, and model-based judging still needs human review for subtle or high-stakes distinctions.

Reader fit

Who may find it relevant

Developers comparing ways to evaluate agents against written requirements.

Teams already using or testing agent frameworks such as LangGraph, CrewAI, OpenAI Agents SDK, DSPy, LlamaIndex, AutoGen, or custom Python callables.

Readers studying trace-aware evaluation, local run artifacts, and repeatable agent regression checks.

Less relevant for readers who mainly want a consumer AI app, a model download, or a no-code automation builder.

Editorial note

Why LifeHubber lists it

ASSERT is useful as an inspection point for readers watching agent evaluation move from vague written intent toward executable cases, captured traces, judge rationales, and repeatable local artifacts.

Source links

Source pages

Reader note

Before relying on this entry

LifeHubber lists entries to help readers inspect AI projects, not to endorse them or prove they are safe, suitable, accurate, maintained, or right for a specific use. We do not verify every entry in depth. Before relying on anything listed, review the original materials, terms, privacy practices, limits, and risks that matter for your situation.

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