Buy Latitude 10 Agent Eval Kit for Node.js

For Node.js: tests for what your agent does, not just what it says: a Vitest library and a CLI for TypeScript agents. Each run records a trajectory (model calls, tool calls with arguments and results, payments, tokens, cost, latency, outcome; the Agent Trace Kit format) and 25 matchers check it: which tools were called, in what order and with what arguments, cost, token, latency and step budgets, retries, payments, leaks, approvals and refusals. Mocked, failing, replayed and prompt-injected tools (a dated corpus of 24 original payloads) and a scripted model, so most suites run in CI with no API key. An LLM judge (Anthropic by default, or OpenAI or any compatible endpoint) with rubrics, votes and a cache; skipped loudly without a key. Trials with pass@k and pass^k, YAML suites, baselines that fail CI on regressions, JUnit and a job summary, and agent-eval import to turn a Trace Kit session into a regression test. Recording adapters for the Anthropic SDK, Claude Agent SDK, OpenAI SDK, OpenAI Agents SDK, Vercel AI SDK and MCP. Includes a setup wizard (node setup.mjs) running 85 example cases in seven folders (tool selection, hallucination, permissions, retries, failures, prompt injection, regression), agent-eval init for an existing project, and a GitHub Actions workflow.