# GENESIS Agent Tools — Research Evidence URL Analyzer (Dexter)

> GENESIS Agent Tools — Research Evidence URL Analyzer (Dexter) is a paid API for AI agents from genesis-agent-tools.genesisagenttools.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).

Analyzes URLs to extract and evaluate research evidence from web content, supporting quick or deep investigation tiers for autonomous agents.

## Facts

- Endpoint: POST https://genesis-agent-tools.genesisagenttools.workers.dev/api/flagships/research-evidence/facilitator/dexter?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/genesis-agent-tools-research-evidence-url-analyzer-dexter-e3eaa9f5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m406KdPC_xc5b6boMJm-P

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 genesis-agent-tools-research-evidence-url-analyzer-dexter-e3eaa9f5 -d '<json body>'
```

Example prompt: Can you do a deep analysis of these URLs — https://example.com/study1 and https://example.com/report2 — and pull out any research evidence they contain?

## When to prefer this

Choose this endpoint when an agent needs to systematically extract or verify research evidence from specific URLs, especially within an automated research or fact-checking pipeline that supports micropayment via x402 on Base USDC. Prefer this over generic web scraping when you need structured evidence output with warning signals, or when integrating into an agent workflow that requires pay-per-call accountability.

## Known failure modes

- Invalid or unreachable URLs return empty evidence array with warnings
- Payment not received or insufficient USDC results in 402 response
- Malformed input (missing URLs array or invalid URI format) returns validation error
- URLs returning non-HTML or non-JSON content may yield no evidence
- Deep tier may time out on very large or slow-loading pages

## How this service works

Pay-per-call x402 APIs for autonomous agents on Base USDC: API compatibility analysis, bounded HTTP/JSON workflows, URL evidence analysis, crypto price consensus, and agent/MCP readiness checks.

## Output

Returns a JSON object with an 'ok' status, the tier used (quick or deep), extracted evidence records as an array, any warnings about the URLs or content, and a product identifier confirming the research-evidence analysis was performed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "tier": {
   "enum": [
    "quick",
    "deep"
   ],
   "type": "string"
  },
  "input": {
   "type": "object",
   "properties": {
    "urls": {
     "type": "array",
     "items": {
      "type": "string",
      "format": "uri"
     },
     "minItems": 1
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tier": "quick",
  "result": {},
  "product": "research-evidence",
  "evidence": [],
  "warnings": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/genesis-agent-tools-research-evidence-url-analyzer-dexter-e3eaa9f5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from genesis-agent-tools.genesisagenttools.workers.dev](https://www.zero.xyz/host/genesis-agent-tools.genesisagenttools.workers.dev/llms.txt)