Patronus AI

Patronus AI is an AI evaluation platform offering automated evaluators (Lynx, Glider), guardrails, and experiment tracking for LLM and agentic applications. It exposes a REST API and Python/TypeScript SDKs.

Patronus AI publishes 1 API on the APIs.io network. Tagged areas include AI Evaluation, GenAI, Guardrails, Hallucination Detection, and LLM.

Patronus AI’s developer surface includes engineering blog and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

17.6/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1

AccessFreemiumFree trial

1 APIs

AI EvaluationGenAIGuardrailsHallucination DetectionLLMAgents

Kin Score

Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1

Composite quality — 17.6/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 2.2 / 20

Commercial Clarity 5.8 / 20

Operational Transparency 2.7 / 13

Governance 0.0 / 12

Discoverability 6.9 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/patronus: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Patronus AI API

REST API for the Patronus platform: evaluate (run a built-in or custom evaluator), criteria, datasets, projects, experiments, and judge endpoints. Authentication via API key. Py...

Pricing Plans 1

Published pricing tiers and plan structures.

Patronus Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Patronus Rate Limits

2 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: patronus
url: https://raw.githubusercontent.com/api-evangelist/patronus/refs/heads/main/apis.yml
name: Patronus AI
kind: company
description: Patronus AI is an AI evaluation platform offering automated evaluators (Lynx, Glider), guardrails, and experiment
  tracking for LLM and agentic applications. It exposes a REST API and Python/TypeScript SDKs.
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: true
  try_now: false
  public: false
  label: Freemium (free trial)
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/patronus.png
tags:
- AI Evaluation
- GenAI
- Guardrails
- Hallucination Detection
- LLM
- Agents
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.19'
apis:
- aid: patronus:platform
  name: Patronus AI API
  description: 'REST API for the Patronus platform: evaluate (run a built-in or custom evaluator), criteria, datasets, projects,
    experiments, and judge endpoints. Authentication via API key. Python SDK at patronus-ai/patronus-py and Node SDK at patronus-ai/patronus-api-node.'
  humanURL: https://docs.patronus.ai/
  baseURL: https://api.patronus.ai
  tags:
  - Evaluators
  - Criteria
  - Datasets
  - Experiments
  - Judge
  properties:
  - type: Documentation
    url: https://docs.patronus.ai/
  - type: PythonSDK
    url: https://github.com/patronus-ai/patronus-py
  - type: NodeSDK
    url: https://github.com/patronus-ai/patronus-api-node
common:
- type: DomainSecurity
  url: security/patronus-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/patronus-ai-inc
- type: Website
  url: https://www.patronus.ai/
- type: DeveloperPortal
  url: https://docs.patronus.ai/
- type: Plans
  url: plans/patronus-plans-pricing.yml
- type: RateLimits
  url: rate-limits/patronus-rate-limits.yml
- type: FinOps
  url: finops/patronus-finops.yml
- type: Blog
  url: https://www.patronus.ai/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com