# CRYPTYX Signal Evaluator

> CRYPTYX Signal Evaluator is a paid API for AI agents from cryptyx.ai, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Evaluates a named digital asset signal across a universe of assets for a given date, returning how many assets triggered that signal

## Facts

- Endpoint: GET https://cryptyx.ai/api/signals/eval
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cryptyx-signal-evaluator-774bbefa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_37shx6aJyWkNkFsAEjoBt

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 cryptyx-signal-evaluator-774bbefa
```

Example prompt: Using CRYPTYX, evaluate the TR_MOMO_CONT_14D signal across the full digital asset universe for 2026-04-25 and tell me how many assets triggered it out of the total.

## When to prefer this

Use this endpoint when you need to know the market-wide breadth of a specific named CRYPTYX signal on a given date — i.e., how many digital assets out of the tracked universe triggered that signal. Ideal for gauging whether a momentum or trend signal is broadly firing or isolated to a few assets.

## Known failure modes

- Unknown signal_id returns error or zero results
- Future dates may return no data if not yet computed
- Invalid date format causes a 400 bad request
- Missing required parameters returns validation error
- Rate limiting or payment failure returns 402 or 429

## How this service works

Invoke the DB-side signal evaluator for one anchor day. Dryrun mode predicts trigger counts without writes; live mode executes and returns rows inserted to signal_log. Backfill primitive for missed pipeline days; validation primitive for forked parameter variants before you activate them. Runs across 200+ digital assets — BTC, ETH, SOL, top-cap + long-tail coverage.

## Output

Returns the evaluation date, signal ID, total number of assets scanned (e.g. 200), and the count of assets that triggered the signal (e.g. 8), giving a breadth reading for that signal on that day.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "day": {
   "type": "string",
   "description": "Date (YYYY-MM-DD)"
  },
  "dryrun": {
   "type": "string",
   "description": "true or false"
  },
  "signal_id": {
   "type": "string",
   "description": "Signal to evaluate"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "day": "2026-04-25",
 "signal_id": "TR_MOMO_CONT_14D",
 "total_assets": 200,
 "triggered_count": 8
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cryptyx-signal-evaluator-774bbefa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cryptyx.ai](https://www.zero.xyz/host/cryptyx.ai/llms.txt)