# Polymarket Signal Detector – Per-Persona Track Record

> Polymarket Signal Detector – Per-Persona Track Record is a paid API for AI agents from x402.sashco.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns per-persona, per-month signal accuracy metrics along with current firing frequency and an implied daily dollar value to evaluate whether subscription pricing is justified.

## Facts

- Endpoint: GET https://x402.sashco.ca/track-record
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-signal-detector-per-persona-track-record-4deee33c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0SS3Toxpm7alIMNYxZhl2

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 polymarket-signal-detector-per-persona-track-record-4deee33c
```

Example prompt: Pull the Polymarket Signal Detector track record and show me the per-persona signal accuracy and firing frequency for each month, along with the implied daily dollar value so I can decide if the subscription is worth it.

## When to prefer this

Use this endpoint when you need to verify the historical accuracy and economic value of Polymarket signal personas before committing to a paid subscription, or when auditing whether a signal service's pricing is justified by its track record. Prefer this over raw trade volume endpoints when the goal is evaluating signal quality rather than market activity.

## Known failure modes

- Missing or invalid 'method' field in input returns an error
- No historical data available yet for a new persona
- Payment failure (insufficient USDC balance) blocks access
- Service unavailable or stale data if underlying Polymarket feed is delayed
- Empty result set if no signals have resolved in the requested period

## How this service works

Per-persona, per-month signal accuracy. See GET /openapi.json for persona methodology notes.

## Output

Returns a structured breakdown per persona and per month including: signal accuracy rate, current firing frequency, and a derived implied daily dollar value — providing checkable math to assess whether the subscription routes are sensibly priced.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-signal-detector-per-persona-track-record-4deee33c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.sashco.ca](https://www.zero.xyz/host/x402.sashco.ca/llms.txt)