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AgentsProof

Trace, grade and share AI agent eval reports from a few SDK calls, with custom graders and golden cases

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freemiumTwo tiers. Free is $0 forever and is aimed at indie builders: 1 project, 200 eval runs per month, the default LLM grader, 10 golden test cases, 1 proof suite, public proof reports and basic email support; custom graders and private proof reports are excluded. Pro is $29 per month, or $290 per year which the page frames as two months free, with unlimited projects, 10,000 eval runs per month, unlimited custom graders, unlimited golden test cases, unlimited proof suites, both public and private proof reports, and priority email support. One eval run is one call to startRun(); steps and proof-suite cases within a run are not counted separately. Exceeding the free limit makes new runs return a 402 from the SDK while existing reports remain accessible. Pro can be cancelled from the billing portal at any time.View full pricing →

Visit AgentsProof

https://agentsproof.dev

About AgentsProof

AgentsProof exists to replace vibe-checking an AI agent with a shareable artifact. The integration is intentionally tiny: install one npm package, call `ap.startRun()` with the input and a goal string that anchors grading, wrap each LLM and tool call in `run.trace()`, and call `run.complete()` — which returns a public URL to a proof report. The report scores the run out of 100 with a breakdown across goal completion, tool accuracy, step efficiency, output quality, safety and anomaly detection, alongside the traced step sequence. Beyond the default LLM grader you write custom graders as plain-English rules that are checked against every run automatically, and you define golden test cases — approved input-output pairs the agent must keep satisfying — grouped into proof suites. The problem it targets is the specific failure mode of shipping agents: someone changes a prompt, something breaks silently, and a user notices before the team does. Because a proof report has a public URL, it also works as external evidence — a way to show a customer or a reviewer that the agent behaves, rather than asserting it. Published drop-in support covers OpenAI, Anthropic, LangChain, CrewAI, the Vercel AI SDK and LlamaIndex, with TypeScript and Python SDKs. The product is in beta, and free-tier eval runs return a 402 from the SDK when the monthly limit is reached rather than silently degrading.

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Key Features

Trace LLM and tool calls with one wrapper and get a scored report URL
Scores across goal completion, tool accuracy, step efficiency, output quality and safety
Custom graders written as plain-English rules checked on every run
Golden test cases grouped into proof suites for regression checking
Publicly shareable proof reports as external evidence
Drop-in support for OpenAI, Anthropic, LangChain, CrewAI, Vercel AI SDK and LlamaIndex

AgentsProof Pros & Cons

Pros

  • +Integration really is a few lines, so there is no adoption cliff
  • +Public reports double as customer-facing evidence, not just internal telemetry
  • +Free tier's 200 runs a month is enough for a solo builder's CI

⚠️ Cons

  • Still in beta
  • Custom graders and private reports are both paid-only, which limits free CI use
  • Public-by-default reports need care with sensitive inputs

Tags

agent-evalsobservabilitytracingllm-judgesdkbeta
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