# AgentPay Deep Research

> AgentPay Deep Research is a paid API for AI agents from agentpay.help, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

Performs multi-source web research on a given topic and returns a structured report with citations, using either standard (~5 sources) or deep (~8 sources) depth.

## Facts

- Endpoint: POST https://agentpay.help/v1/deep-research
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentpay-deep-research-4df9bc7c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ma1UPLGVXNLNEL57aeq-H

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 agentpay-deep-research-4df9bc7c -d '<json body>'
```

Example prompt: Do a deep research report on the current state of quantum computing adoption in enterprise software — use the deep depth setting so you get a wider corpus, and give me a structured report with citations.

## When to prefer this

Choose this endpoint when you need a synthesized, cited research report compiled from multiple live web sources rather than a single document retrieval or a static knowledge base answer. It is especially useful when the topic is current, niche, or requires evidence-backed summarization with traceable citations. Prefer the 'deep' mode for thorough analysis and 'standard' for quicker, lighter overviews. This is a good fit for autonomous agents that need to produce briefings, background summaries, or due-diligence reports without requiring the user to manage API keys or accounts.

## Known failure modes

- Topic string too short (under 4 characters) or too long (over 400 characters) returns a validation error
- Invalid depth enum value (not 'standard' or 'deep') causes a 400 bad request
- Payment failure or insufficient USDC balance returns HTTP 402 Payment Required
- Topic yields no usable web sources, resulting in a sparse or incomplete report
- Network or upstream search service timeout causes a delayed or failed response

## How this service works

Pay-per-call AI services via the 402 Payment Required protocol. No accounts, no API keys — just USDC on Base.

## Output

Returns a JSON object containing the research topic, depth used, a markdown-formatted report with section headers and inline citation markers (e.g. [S1]), a citations array with id, URL, and title for each source, and statistics including number of sources read, search results, and report word count.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "depth": {
   "enum": [
    "standard",
    "deep"
   ],
   "type": "string",
   "description": "standard = ~5 sources, deep = ~8 sources + wider corpus"
  },
  "topic": {
   "type": "string",
   "maxLength": 400,
   "minLength": 4,
   "description": "Research topic or question"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "depth": "standard",
  "stats": {
   "report_words": 612,
   "sources_read": 5,
   "search_results": 5
  },
  "topic": "state of x402 protocol adoption September 2026",
  "report": "## Executive Summary\n...\n\n## Key Findings\n1. ... [S1]\n",
  "citations": [
   {
    "id": "S1",
    "url": "https://example.com/source",
    "title": "Example Source"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentpay-deep-research-4df9bc7c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentpay.help](https://www.zero.xyz/host/agentpay.help/llms.txt)