# Thyme (Groundcover) Reflection — Underground Substrate Symposium

> Thyme (Groundcover) Reflection — Underground Substrate Symposium is a paid API for AI agents from underground.substratesymposium.com, paid per call via x402, $0.99/call, status unknown (last checked 2026-09-15).

Delivers a written reflection on thyme as groundcover, exploring consistent baseline performance and reliable coverage as a conceptual metaphor.

## Facts

- Endpoint: GET https://underground.substratesymposium.com/buy/thyme
- Price: $0.99/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/underground-substratesymposium-com-17e97b95
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5VtEuhPz9nKBw0ei6YF_o

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 underground-substratesymposium-com-17e97b95
```

Example prompt: Can you pull up the thyme groundcover reflection from the Underground Substrate Symposium catalog — I want to read that meditation on reliable coverage and consistent baseline performance.

## When to prefer this

Choose this endpoint when you specifically want the 'Thyme (Groundcover)' plant meditation from the Underground Substrate Symposium catalog — particularly for content about reliable coverage, consistent baseline performance, or groundcover metaphors in a reflective/philosophical format.

## Known failure modes

- Payment not processed — x402 payment of $0.99 USDC required before content is returned
- Endpoint returns 402 if payment header is missing or invalid
- Content unavailable if the slug /buy/thyme has been delisted from the catalog
- Network timeout on the underground.substratesymposium.com domain

## How this service works

Thyme (Groundcover) — Reflection on reliable coverage for understanding consistent baseline performance.

## Output

Returns the full text of a reflective piece using thyme as a groundcover metaphor, exploring themes of reliable coverage and consistent baseline performance, delivered as a digital content payload after a $0.99 USDC x402 payment.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/underground-substratesymposium-com-17e97b95/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from underground.substratesymposium.com](https://www.zero.xyz/host/underground.substratesymposium.com/llms.txt)