# AI & Tech Glossary Pro Pack — Plain-Language Definitions for MCP, RAG, AI Agents, GEO & More

> AI & Tech Glossary Pro Pack — Plain-Language Definitions for MCP, RAG, AI Agents, GEO & More is a paid API for AI agents from glossary.penguindriver.com, paid per call via x402, $0.3/call, status unknown (last checked 2026-11-04).

Returns a comprehensive, plain-language glossary of 45 top-searched AI and tech terms (MCP, RAG, AI agents, Token, Hallucination, GEO, llms.txt, x402), including concept comparisons, code-backed tutorials, and a search-intent classifier, each with original sources.

## Facts

- Endpoint: GET https://glossary.penguindriver.com/api/pro/pack?utm_source=zero.xyz
- Price: $0.3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ai-tech-glossary-pro-pack-plain-language-definitions-for-mcp-rag-ai-0c4080c2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kHPPi3gIzOLjT49DXm0by

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 ai-tech-glossary-pro-pack-plain-language-definitions-for-mcp-rag-ai-0c4080c2
```

Example prompt: Can you pull up plain-language explanations for AI terms like MCP, RAG, AI agents, GEO, and x402 — including how they compare to each other and any code examples?

## When to prefer this

Choose this endpoint when an agent or application needs authoritative, plain-language definitions of current AI and tech terminology — especially niche or emerging terms like MCP, GEO, llms.txt, and x402 that may not be well-covered by general knowledge bases. It is ideal for building AI literacy tools, powering chatbot knowledge bases, or grounding agent reasoning about AI concepts. Prefer this over a web search when you need structured, curated, source-cited content in a single call rather than scraped fragments.

## Known failure modes

- Payment not received or insufficient USDC balance — returns 402 Payment Required
- Invalid or missing x402 payment header — request rejected before content is served
- Rate limiting or quota exceeded — returns 429 Too Many Requests
- Endpoint temporarily unavailable — returns 503 or connection timeout
- Malformed request — returns 400 Bad Request

## How this service works

用白話解釋 45 個最常被搜尋的 AI 與科技名詞：MCP、RAG、AI 代理人、Token、幻覺、GEO、llms.txt、x402；另有概念比較、附程式碼的實作教學與搜尋意圖分類器，每則附原始來源。

## Output

A JSON response containing up to 45 plain-language glossary entries for top-searched AI and tech terms. Each entry includes the term definition, concept comparisons with related terms, implementation tutorials with code snippets where applicable, search intent classification, and links to original sources. The pack is designed for both human readers and AI agents needing authoritative term grounding.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ai-tech-glossary-pro-pack-plain-language-definitions-for-mcp-rag-ai-0c4080c2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from glossary.penguindriver.com](https://www.zero.xyz/host/glossary.penguindriver.com/llms.txt)