TestMu AI Blogs

Playwright CLI vs Playwright MCP vs Kane CLI, compared on tokens, turns, reliability and CI. What the docs claim, what Slack measured, and which to use when.

How to test a voice agent in 12 steps: a test contract, copyable test cases, accent, noise and response time checks, a scored release gate and a go-live list.

Enterprise AI testing covers AI that tests your software and testing the AI you ship. Get approval gates, control checks, EU AI Act dates and a 90-day pilot.

The 11 best AI evaluation tools for production in 2026, ranked by seven criteria checked in vendor docs: online scoring, CI gates, alerts and self-hosting.

Compare 9 AI agent observability tools on what each shows for a multi-step run: handoffs, sessions, MCP calls, agent evaluators, framework support and hosting.

Compare 11 AI observability tools for LLM tracing and monitoring in 2026: tracing model, OpenTelemetry support, self-hosting, and which tools changed owners.

Agentic AI risks such as false completion reports, goal hijacking and runaway cost: 11 risks, the evidence each one leaves, and the test to run before release.

A cross-browser difference only means something when the browser is the only thing that changed. Here is how to run a controlled sweep in one live session.

Chrome Beta ships over a month before Stable. Here is how to test your site on a beta browser version in a live session and catch breaking changes early.

LLM cost tracking in agent evals: put cost per verified successful task next to pass rate, set budgets from repeated runs, and fail the build on a regression.

Stateless MCP drops the initialize handshake and sessions. Baseline your server on the old spec, migrate, then diff tools, schemas, errors and agent behavior.

Learn the test oracle problem and how to test AI features with no expected output: derive checks from specs, code and tools, and report what you cannot verify.

Rook CLI exits 0 even when agent scenarios fail. Gate GitHub Actions on the report verdicts instead: wire the workflow, classify red jobs and keep the evidence.

MCP prompt injection can start at connection time: 66% of live registry servers in an August 2026 audit return instructions. Learn how to test your MCP client.

AI agent red teaming as a runnable test plan: 11 injection and tool misuse scenarios for AI agent security testing, graded on what the agent did, not its reply.

A read-only subagent can still run rm -rf. Test AI agent permissions by trying out-of-scope actions on every route, checking the effect, and enforcing scope.

Pass@k asks whether any of k runs passed; pass^k asks whether all k did. See why average pass rate hides flaky AI agents and how many runs a pass^k gate needs.

Agentforce Testing Center explained: what it tests, documented limits, Flex Credit cost, sandbox constraints, and where end-to-end agent testing fills the gaps.

Agentforce regression testing guide: build a Testing Center suite, run sf agent test in CI/CD, tell flaky from regressed, and check what the agent actually did.

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