suggest

name	suggest
description	USE FOR query autocomplete/suggestions. Fast (<100ms). Returns suggested queries as user types. Supports rich suggestions with entity info. Typo-resilient.
version	1.0.0

Suggest / Autocomplete

Paid Suggest proxy via x402 pay-per-use (HTTP 402).

Prerequisites: This skill requires x402-payment. Complete the setup steps before first use.

Security: Documentation only — no executable code or credentials. Wallet/keys stay on your machine; never stored here.

Service URLs

Role	Domain
API Provider	https://www.cpbox.io
Facilitator	https://www.cppay.finance

Endpoint (Agent Interface)

GET /api/x402/suggest

Payment Flow (x402 Protocol)

1. First request -> 402 Payment Required with requirements JSON
2. Sign & retry with PAYMENT-SIGNATURE -> result JSON

With @springmint/x402-payment or x402-sdk-go, payment is automatic.

Quick Start (cURL)

Basic Suggestions

curl -s "https://www.cpbox.io/api/x402/suggest?q=how+to+" \
  -H "Accept: application/json"

With All Parameters

curl -s "https://www.cpbox.io/api/x402/suggest" \
  -H "Accept: application/json" \
  -G \
  --data-urlencode "q=albert" \
  --data-urlencode "country=US" \
  --data-urlencode "lang=en" \
  --data-urlencode "count=10" \
  --data-urlencode "rich=true"

Using with x402-payment

npx @springmint/x402-payment \
  --url "https://www.cpbox.io/api/x402/suggest?q=albert&rich=true&count=10" \
  --method GET

Optional Headers:

• Accept-Encoding: gzip — Enable response compression

Parameters

Parameter	Type	Required	Default	Description
q	string	Yes	—	Suggest search query (1-400 chars, max 50 words)
lang	string	No	en	Language preference (2+ char language code, e.g. fr, de, zh-hans)
country	string	No	US	Search country (2-letter country code or ALL)
count	int	No	5	Number of suggestions (1-20). Actual results may be fewer
rich	bool	No	false	Enhance with entity info (title, description, image). Paid Search plan required

Response Fields

Field	Type	Description
type	string	Always "suggest"
query.original	string	The original suggest search query
results	array	List of suggestions (may be empty)
results[].query	string	Suggested query completion
results[].is_entity	bool?	Whether the suggested enriched query is an entity (rich only)
results[].title	string?	The suggested query enriched title (rich only)
results[].description	string?	The suggested query enriched description (rich only)
results[].img	string?	The suggested query enriched image URL (rich only)

Fields with null values are excluded from the response. Non-rich results contain only the query field.

Rich Response Example (rich=true)

{
  "type": "suggest",
  "query": { "original": "albert" },
  "results": [
    {
      "query": "albert einstein",
      "is_entity": true,
      "title": "Albert Einstein",
      "description": "German-born theoretical physicist",
      "img": "https://imgs.search.provider/..."
    },
    { "query": "albert einstein quotes", "is_entity": false }
  ]
}

Use Cases

• Search-as-you-type UI: Real-time autocomplete dropdown. Debounce 150-300ms.
• Query refinement for RAG: Expand partial/ambiguous queries before calling web-search or llm-context.
• Entity detection: Use rich=true to detect entities with title, description, and image for preview cards.
• Typo-tolerant input: Get clean suggestions from misspelled input without separate spellcheck.

Notes

• Latency: Designed for <100ms response times
• Country/lang: Hints for suggestion relevance, not strict filters
• Typo handling: Suggestions handle common typos without separate spellcheck