# Judgment Labs

**Canonical:** https://apis.io/providers/judgment-labs/  
**Website:** https://www.judgmentlabs.ai  
**APIs profiled:** 1

Judgment Labs builds the continuous-improvement stack for AI agents: tooling to trace, evaluate, monitor, and improve agent behavior in production. Its open-source Judgeval SDK (Python and TypeScript, with Go and Java clients) instruments agent frameworks and model providers to capture traces, spans, and tool calls; Agent Judges and Code Judges score behavior against natural-language rubrics and deterministic checks; and Agent Behavior Monitoring plus automations and alerts surface regressions and failure modes. The platform is accessed through the Judgeval SDKs, the judgment CLI, and a hosted MCP server, and integrates with LangGraph, OpenAI Agents SDK, Claude Agent SDK, Google ADK, Vercel AI SDK, LiveKit, Pipecat, and OpenTelemetry / OpenInference tracing pipelines. The company is backed by Lightspeed with a $32M round.

## Kin Score — 34.7 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 34.7).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 0.0 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 18.4 |
| Developer Ergonomics | 78.6 |
| Commercial Clarity | 34.2 |
| Access Clarity | 34.2 |

## Agent readiness — 16.9 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (1)

- **Judgment Platform API** — The backend platform API behind Judgeval — ingests agent traces/spans, runs evaluations and judges, and serves traces, sessions, behaviors, datasets, and automations. Consumed t...

## MCP servers (1)

- **Judgment Labs MCP Server** — The Judgment MCP server exposes production agent data — traces, sessions, behaviors, judges, projects, views, datasets, prompts, and automations — to MCP-capable AI code editors...

## Security (2)

- **Judgment Labs Authentication** — apiKey · 1 scheme
- **Judgment Labs Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Agents, Artificial Intelligence, Agent Evaluation, Observability, Tracing, Monitoring, LLM, Developer Tools, MCP

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/judgment-labs/). Scores are computed from the provider's own public artifacts under a published rubric.