TestMu AI Blogs

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.

Discover what's new and why it matters. Powered by Claude Opus 5.5, TestMu AI delivers Agent Assurance for your AI deployments - test web, mobile, and AI agents, all on one platform.

Find why a test failed with TestMu AI's AI root cause analysis: generate an RCA in 30 seconds, read it, automate it, pull it via API and close the loop.

Zenity Labs' SalesBleed let a poisoned Salesforce lead make Agentforce leak CRM data over a DNS lookup, no click. How it worked and what Salesforce fixed.

Run IBM Z green-screen 3270 mainframe tests in parallel on HyperExecute with Robot Framework, s3270/x3270 emulators, auto-split, and scenario video recordings.

Run spec-driven development with Claude Code from the terminal: Spec Kit writes spec.md, plan.md, and tasks.md, and Kane CLI tests the build against the spec.

Run a TDD workflow from the terminal: see each test fail for the right reason, go green in watch mode, prove tests catch bugs, and gate commits and CI runs.