# AgentRXI Answer Grader

> AgentRXI Answer Grader is a paid API for AI agents from agentrxi.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-15).

Scores a draft answer 0-10 against a question, rubric, and/or source URLs, identifies factual errors and unsupported claims with fixes, and returns an improved answer.

## Facts

- Endpoint: GET https://agentrxi.com/v1/grade?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentrxi-answer-grader-a7fb43dc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8pF7OCM4ySlMMfvGRzID7

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentrxi-answer-grader-a7fb43dc
```

Example prompt: Before I send this out, can you grade my draft answer to the question 'What causes inflation?' against this rubric — 'must cite monetary policy and supply chain factors' — and using these two sources: https://fed.org/inflation and https://imf.org/causes? Score it 0-10, flag any factual errors or unsupported claims, and give me an improved version.

## When to prefer this

Use this endpoint when an AI agent needs to self-verify a draft answer before delivering it to a user — especially when factual accuracy matters, a rubric must be satisfied, or specific source documents must support the claims. Prefer this over general LLM self-critique when you want a structured 0-10 score, explicit error listings with fixes, and a ready-to-use improved answer in a single call.

## Known failure modes

- Missing required 'answer' parameter returns an error
- Inaccessible or invalid source URLs may result in unchecked claims for those sources
- Very long answers or many source URLs may increase latency or hit size limits
- Ambiguous or missing question/rubric may produce lower-quality grading feedback
- Network timeouts when fetching source URLs during claim verification

## How this service works

Answer grader: scores a draft answer 0-10 against the question, a rubric and/or source URLs, lists factual errors and unsupported claims with fixes, and returns an improved answer. A self-check before an agent ships. Also callable as GET with the same fields as query parameters.

## Output

Returns a numeric score from 0-10 for the answer quality, a list of factual errors and unsupported claims each paired with suggested corrections, and a rewritten improved version of the answer that addresses the identified issues.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "answer"
     ],
     "properties": {
      "answer": {
       "type": "string"
      },
      "rubric": {
       "type": "string"
      },
      "sources": {
       "type": "string",
       "description": "| separated URLs"
      },
      "question": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentrxi-answer-grader-a7fb43dc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentrxi.com](https://www.zero.xyz/host/agentrxi.com/llms.txt)