# Frankenstein Passage Retrieval

> Frankenstein Passage Retrieval is a paid API for AI agents from library.forgemesh.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Retrieves the most relevant verbatim passages from Mary Shelley's Frankenstein in response to a question, with chapter and location citations.

## Facts

- Endpoint: POST https://library.forgemesh.io/ask-frankenstein
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/frankenstein-passage-retrieval-52df16b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kJHwtz6BvttJpoS49Xpvz

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 frankenstein-passage-retrieval-52df16b6 -d '<json body>'
```

Example prompt: Search Frankenstein for the most relevant passages about how the creature learns to speak and understand language — give me up to 8 passages with their chapter and location citations.

## When to prefer this

Choose this endpoint when you need verbatim, citable text from Frankenstein specifically — not a summary, paraphrase, or AI-generated answer. Ideal for literary research, essay writing, quote verification, or any task where the actual wording and location in the source text matters. Prefer this over a general LLM answer when fidelity to the original text is required.

## Known failure modes

- Question too vague to match meaningful passages — returns low-relevance or empty results
- Limit parameter exceeds 15 — may return error or be capped
- Payment not processed correctly — endpoint returns 402 requiring $0.01 USDC via x402
- Question not related to Frankenstein's content — returns irrelevant or no passages

## How this service works

Ask a question about Frankenstein and get back the most relevant passages from the book itself, with chapter and location citations. Retrieval only — full-text search, not a generated summary or answer. No license, no API key required.

## Output

A ranked list of verbatim passages from Frankenstein, each accompanied by chapter number and location/position citation within the text. Results are retrieval-based (not generated or summarized), reflecting the actual wording of Mary Shelley's novel.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "description": "Max passages (default 5, max 15)"
  },
  "question": {
   "type": "string",
   "description": "Your question about the book, e.g. \"how does the creature learn to speak?\""
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 3,
  "title": "Frankenstein; or, the modern prometheus",
  "author": "Shelley, Mary Wollstonecraft, 1797-1851",
  "method": "full-text retrieval — returns the most relevant passages from the book for your question; no summarization or generation",
  "book_id": 84,
  "passages": [
   {
    "text": "…I found that these people possessed a method of communicating their experience and feelings to one another by articulate sounds…",
    "chapter": 12,
    "location": "chapter 12, passage #210"
   }
  ],
  "question": "how does the creature learn to speak"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/frankenstein-passage-retrieval-52df16b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from library.forgemesh.io](https://www.zero.xyz/host/library.forgemesh.io/llms.txt)