# GEDX402 Cited Research Pack

> GEDX402 Cited Research Pack is a paid API for AI agents from browser.gedx402.com, paid per call via x402, $1.105/call, status down (last checked 2026-08-24).

Fetches a URL, extracts its content with optional safety filtering, indexes it via RAG, and returns a cited answer to a natural-language question about it

## Facts

- Endpoint: GET https://browser.gedx402.com/v1/recipes/cited-research-pack
- Price: $1.105/call
- Payment: x402
- Status: down
- Last checked: 2026-08-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gedx402-cited-research-pack-e7daceb4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_frB1BAnxK1bTX7wWzxJum

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 gedx402-cited-research-pack-e7daceb4
```

Example prompt: Look up https://arxiv.org/abs/2310.06825 and answer the question 'What are the main contributions of this paper?' with citations — use top_k of 5 and keep safety filtering on.

## When to prefer this

Choose this endpoint when you need to ask a specific question about the content of a known URL and get back a cited, grounded answer — not just a summary. It is especially suited for research tasks where traceability to source snippets matters. It combines web fetching, safety filtering, RAG indexing, and LLM Q&A in a single call, saving orchestration overhead. Prefer it over generic web scrapers when you need answer + citations rather than raw text, and over general search APIs when you already know the source URL.

## Known failure modes

- URL is unreachable or returns non-200 — extraction step fails with an error
- Content flagged by Llama Guard safe-extract — pipeline halts early with safety rejection
- RAG index upload times out or fails — answer step cannot proceed without index
- question is empty or too vague — answer may be low quality or generic
- Payment rejected or insufficient USDC balance — 402 response before processing begins
- top_k out of range (must be 1-20) — validation error
- budget.max_queries or max_index_ops out of allowed range — validation error

## How this service works

x402 workers ai. pay with usdc on base, polygon, arbitrum, world, or solana. no api keys.

## Output

A JSON object containing a cited natural-language answer to the question, an array of citation objects (each with URL, index number, and a text snippet), a session token for the RAG session, a reference to the persisted markdown artifact stored at a retrievable URL, and a list of completed pipeline steps (safe-extract, persist, outcome/answer).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "description": "HTTPS URL to research."
  },
  "poll": {
   "type": "boolean",
   "description": "Poll index upload until ready (default false)."
  },
  "safe": {
   "type": "boolean",
   "description": "Run Llama Guard safe-extract first (default true). Set false to skip guard."
  },
  "top_k": {
   "type": "integer",
   "description": "Retrieval top_k for answer step (1-20)."
  },
  "budget": {
   "type": "object",
   "properties": {
    "max_queries": {
     "type": "integer",
     "maximum": 64,
     "minimum": 1
    },
    "max_index_ops": {
     "type": "integer",
     "maximum": 32,
     "minimum": 1
    }
   },
   "description": "Optional RAG session budget forwarded to outcome/answer step."
  },
  "question": {
   "type": "string",
   "description": "Natural-language question answered with citations."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "answer": "The article argues … [1]",
  "recipe": "cited-research-pack",
  "artifacts": {
   "persist": {
    "key": "extract/uuid.md",
    "get_url": "https://storage.gedx402.com/v1/objects/extract/uuid.md"
   }
  },
  "citations": [
   {
    "url": "https://example.com/blog/post",
    "index": 1,
    "snippet": "…"
   }
  ],
  "session_token": "abc123…",
  "completed_steps": [
   "safe-extract",
   "persist",
   "outcome/answer"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gedx402-cited-research-pack-e7daceb4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from browser.gedx402.com](https://www.zero.xyz/host/browser.gedx402.com/llms.txt)