# TCM Meridian Lookup API

> TCM Meridian Lookup API is a paid API for AI agents from api.cn402.com, paid per call via x402, $0.016/call, status unknown (last checked 2026-09-15).

Returns detailed information about the 12 main Traditional Chinese Medicine meridians including organ system, five-element association, flow time, and key acupoints.

## Facts

- Endpoint: GET https://api.cn402.com/tcm/meridian
- Price: $0.016/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-cn402-com-04a4e0d8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UZ2tAuYCZBHYcCEMgAtzC

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 api-cn402-com-04a4e0d8
```

Example prompt: Give me the details for all 12 TCM meridians — I want to know each one's organ system, five-element association, peak flow time, and key acupoints.

## When to prefer this

Use this endpoint when you need structured reference data about traditional Chinese medicine meridian channels, including organ associations, elemental classifications, and circadian qi flow times. Ideal for TCM practitioners, wellness apps, acupuncture education tools, or any agent needing to reason about the 12 main meridian channels and their properties.

## Known failure modes

- Invalid or unrecognized meridian name returns empty or error response
- Network timeout if the endpoint is unavailable
- Malformed POST body may return 400 error
- No matching meridian found returns empty meridians array

## How this service works

TCM meridian, Chinese medicine acupuncture meridian, 经络, 12 meridians, Lung Heart Pericardium Spleen Liver Kidney, 肺经心经, acupoints, meridian flow time, acupuncture channels, Chinese energy channels. Look up the 12 main TCM meridians with element, organ system, flow time, and key acupoints.

## Output

Returns an array of meridian objects, each containing the meridian name (Chinese and English), associated organ, five-element classification, and flow time window indicating when qi is most active in that channel.

## Example request

```json
{
 "meridian": "Lung"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "name": {
   "type": "string",
   "description": "ENS name e.g. vitalik.eth (required)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-cn402-com-04a4e0d8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.cn402.com](https://www.zero.xyz/host/api.cn402.com/llms.txt)