# Signal Ledger Author Scorecard

> Signal Ledger Author Scorecard is a paid API for AI agents from 43-135-4-66.sslip.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Fetches a credibility scorecard for an X/Twitter finance creator, including their stock-market claim resolution stats, hit rate, Wilson confidence interval, direction breakdown, and coverage freshness.

## Facts

- Endpoint: GET https://43-135-4-66.sslip.io/v1/authors/:handle/scorecard
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signal-ledger-author-scorecard-442e8baa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6BnzuaROuAammJbq1cIBC

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 signal-ledger-author-scorecard-442e8baa
```

Example prompt: Can you pull up the Signal Ledger scorecard for @CathieDWood on X — I want to see her stock-market claim hit rate, sample size, Wilson confidence interval, and how fresh the data is before I decide whether to follow her calls?

## When to prefer this

Choose this endpoint when you need a statistically grounded, evidence-linked credibility check on a specific X/Twitter finance creator — particularly when evaluating whether to trust or act on their stock-market calls. It is purpose-built for investment-influencer due diligence and provides Wilson confidence intervals that generic social media analytics tools do not offer.

## Known failure modes

- Handle not found or not indexed — returns 404 or empty scorecard
- Insufficient resolved claims for statistically meaningful results — low sample size warning
- Stale data if the author has not posted recently — low freshness score
- Rate limiting or payment failure — 402/429 error
- Invalid handle format — 400 bad request

## How this service works

Financial author track record / 财经作者历史成绩. Look up resolved stock-market claims, sample size, hit rate, Wilson confidence interval, direction breakdown, coverage and freshness for an X/Twitter finance creator. Useful for creator credibility and investment-influencer due diligence.

## Output

Returns a scorecard for the specified X/Twitter finance creator including: number of resolved stock-market claims (sample size), overall hit rate, Wilson score confidence interval, breakdown of directional calls (bullish/bearish accuracy), coverage scope, and data freshness timestamp.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signal-ledger-author-scorecard-442e8baa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 43-135-4-66.sslip.io](https://www.zero.xyz/host/43-135-4-66.sslip.io/llms.txt)