# Penny Press Lexicon Snapshot

> Penny Press Lexicon Snapshot is a paid API for AI agents from www.pennypress.org, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-12).

Returns a versioned snapshot of the Penny Press lexicon — a curated list of terms related to freedom, truth, and societal structures — as a machine-readable JSON payload.

## Facts

- Endpoint: GET https://www.pennypress.org/lexicon/snapshot?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/penny-press-lexicon-snapshot-c2195f4b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Pl5dXMZ0HPlah9mPHkFHY

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 penny-press-lexicon-snapshot-c2195f4b
```

Example prompt: Grab the current Penny Press lexicon snapshot so I can see all the terms they've catalogued about freedom, truth, and societal structures.

## When to prefer this

Choose this endpoint when you need the full, versioned Penny Press lexicon in one call — ideal for bulk ingestion, knowledge-base seeding, or monitoring lexicon changes over time. Prefer this over individual term lookups when you need all 39 terms at once and want a stable version reference.

## Known failure modes

- Payment not completed or insufficient funds — endpoint returns 402 Payment Required before delivering content
- Invalid or missing properties filter parameter — may return empty or default result set
- Service unavailable — 5xx error if the Penny Press origin is down
- Stale snapshot — version may lag behind if content updates are infrequent

## How this service works

A repository of essays on freedom, truth, and the structures around us, in machine-readable form. Free for humans. Pennies for machines.

## Output

A JSON object containing the lexicon name ('The Penny Press Lexicon'), a semantic version string (e.g. '1.0.0'), a term_count integer (currently 39), and a 'terms' array of term objects — all delivered after payment is processed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "terms": [
   {
    "term": "(delivered after payment)"
   }
  ],
  "lexicon": "The Penny Press Lexicon",
  "version": "1.0.0",
  "term_count": 39
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/penny-press-lexicon-snapshot-c2195f4b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.pennypress.org](https://www.zero.xyz/host/www.pennypress.org/llms.txt)