Continuous AI Agent Evaluation

Know exactly how good your agent is, all the time.

EvalFox continuously scores your AI agents across quality, safety, and performance — catching regressions before they reach users and giving your team a shared ground truth on agent health.

No SDK required to get started — just paste your agent's URL
EvalFox — Customer Support Agent · Production
EvalFox Score
87/100
↑ 4 pts from last week
PASSING
Last run 3 min ago
48 / 50 tests passed
Correctness
92
Safety
98
Coherence
85
Instruction Follow
78
Latency (TTFT)
62
Core flows · v2.4.1
91
2m ago
Guardrail checks · v2.4.1
61
8m ago
Regression set · v2.4.0
88
1h ago

Works with every agentic framework

OpenAI API Anthropic Claude LangChain Vercel AI SDK LangGraph Mastra CrewAI AutoGen

From agent URL to quality scores in under 10 minutes

No infrastructure to manage. No code changes required. Just point EvalFox at your agent and get a full quality picture instantly.

1

Connect your agent

Paste your agent's endpoint URL and configure auth headers. EvalFox auto-detects the protocol — REST, SSE, WebSocket, or OpenAI-compatible — and fires a live probe in seconds.

2

Define your test suite

Upload your PRD or system prompt and EvalFox auto-generates test cases and judging criteria matched to your requirements. Or build tests manually — single-turn or full multi-turn conversations.

3

Watch scores run continuously

EvalFox evaluates every run across quality, safety, and performance dimensions. Regressions trigger instant alerts. Every score ships with LLM judge reasoning you can inspect and trust.

Everything your team needs to ship confident agents

Built for the full evaluation lifecycle — from first prototype to production monitoring.

Zero-code endpoint testing

Paste any agent URL. Configure request shape and response path with a visual builder. No SDK, no proxy, no backend changes — just a URL and you're evaluating.

PRD → test suite in seconds

Upload your product requirements doc. EvalFox parses it and generates happy-path, edge-case, negative, adversarial, and multi-turn tests — plus a matched set of judging criteria.

LLM-as-Judge with reasoning

Every score comes with a chain-of-thought explanation from a configurable judge model. Understand exactly why a test passed or failed, not just that it did.

Regression detection

Baseline pinning, automated comparison on every new run, and immediate alerts via Slack, email, or webhook the moment a dimension drops below threshold.

CI/CD integration

GitHub Actions, GitLab CI, and CircleCI plugins that trigger a full test suite on every push and block merges when the score falls below your quality bar.

Continuous monitoring

Schedule runs every 15 minutes or on deploy. In proxy mode, EvalFox scores a sample of real production traffic — a live quality signal with no synthetic overhead.

One score isn't enough. We track all of them.

EvalFox scores every agent response across quality, reliability, safety, and performance — each dimension tracked independently so you know exactly what shifted, and why.

Build your own scoring model
Correctness Safety Coherence Tone match Brand voice Code execution + Add custom dimension
  • Add unlimited custom dimensions, each with its own rubric and judge prompt.
  • Set custom weights so the composite EvalFox Score reflects what matters to you — weight guardrails at 40% or prioritize correctness, your call.
  • Bring your own judge model — GPT, Claude, or self-hosted — and tune thresholds per dimension.
Evaluation dimensions
Correctness Safety Performance Completeness Guardrails Coherence
Quality
Correctness, relevance, coherence, completeness
91
↑ 3
Safety
Guardrails, PII leakage, jailbreak resistance
98
↑ 1
Reliability
Context retention, tool call accuracy, hallucination rate
84
↑ 6
Performance
TTFT, total latency, token cost per call
62
↓ 8

Start free, scale as you grow

Usage-based overages, transparent judge model cost pass-through, no surprises.

Free
$0
forever
  • 1 agent
  • 50 test cases
  • 100 runs / month
  • 5 default scoring dimensions
  • Dashboard & run history
Get started
Starter
$49
per month
  • 3 agents
  • 500 test cases
  • 2,000 runs / month
  • 5 custom criteria
  • Regression alerts
  • CI/CD integration
Start trial
Enterprise
Custom
contact us
  • Everything in Pro
  • SSO / SAML
  • Private deployment
  • Data residency (US/EU/APAC)
  • SOC 2 Type II
  • 99.9% SLA
Talk to us

Stop shipping blind. Start shipping confident.

Set up your first evaluation in under 10 minutes. No credit card required.

Get started free →