# Chiro x402 — Chiropractic Knowledge Retrieval

> Chiro x402 — Chiropractic Knowledge Retrieval is a paid API for AI agents from api.chiro-x402.org, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-16).

Searches a 500K+ segment corpus of general chiropractic knowledge and returns structured text results, paid per-query via x402 USDC micropayment on Base mainnet.

## Facts

- Endpoint: POST https://api.chiro-x402.org/query
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chiro-x402-chiropractic-knowledge-retrieval-913f6365
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_f4MBuvyuMGnbpjbW98RFo

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 chiro-x402-chiropractic-knowledge-retrieval-913f6365 -d '<json body>'
```

Example prompt: Search the chiropractic knowledge base for best practices on handling a new patient consultation and give me 10 results — pay the $0.05 USDC query fee automatically.

## When to prefer this

Choose this endpoint when an AI agent needs authoritative, structured chiropractic knowledge — clinical protocols, patient communication scripts, wellness plans, or practice management advice — without requiring API key setup or account registration. It is especially suited for agents that can autonomously handle x402 USDC micropayments on Base mainnet and need to retrieve specific, cited segments rather than generating freeform text.

## Known failure modes

- Insufficient USDC balance or failed x402 payment — query is rejected with a payment error
- Query string too vague or out-of-domain — returns low-relevance segments or empty results array
- Network unavailability on Base mainnet causing payment processing delays
- Malformed request body (missing query field) — returns 400-level error
- results_count set to 0 or negative — may return empty results array

## How this service works

Paid AI-agent endpoint for searching 500K+ segments of general chiropractic knowledge. $0.05 USDC per query on Base mainnet. No API keys, no accounts — agents pay via x402 v2 protocol and receive structured results.

**Corpus:** Clinical protocols, wellness plans, marketing strategies, patient communication, practice management — sourced from general chiropractic training.

## Output

An array of up to N text segments (default 10) each containing the matched text excerpt, the section/topic label it belongs to (e.g. 'New-Member-Onboarding'), and the source video or training material it was drawn from. Also includes the original query, payment details (token, amount, network), and RAG source metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "meta": {
   "type": "object"
  },
  "query": {
   "type": "string"
  },
  "payment": {
   "type": "object"
  },
  "results": {
   "type": "array"
  },
  "results_count": {
   "type": "integer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {
  "meta": {
   "rag_source": "http"
  },
  "query": "how do I handle a consultation",
  "payment": {
   "token": "USDC",
   "amount": "$0.05",
   "network": "base"
  },
  "results": [
   {
    "text": "...",
    "section": "1. New-Member-Onboarding",
    "source_video": "Practice-Toolkit-Chiro-Essentials-25-26"
   }
  ],
  "results_count": 10
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/chiro-x402-chiropractic-knowledge-retrieval-913f6365/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.chiro-x402.org](https://www.zero.xyz/host/api.chiro-x402.org/llms.txt)