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name: capable-grace-production-ab1c.up.railway.app
description: This host provides a single endpoint that returns overnight social market alpha signals covering the past 12 hours. It aggregates social momentum data including top moving tickers, mention counts, engagement metrics, and sentiment scores into a structured snapshot. It is designed for pre-market research, not real-time trading or fundamental analysis.
host: capable-grace-production-ab1c.up.railway.app
---

# capable-grace-production-ab1c.up.railway.app

capable-grace-production-ab1c.up.railway.app is a social sentiment signal host serving agents that need a concise overnight summary of which tickers are generating social buzz before markets open. It delivers a single, pre-computed snapshot rather than streaming or on-demand queries, making it suited for batch pre-market workflows rather than intraday decision loops.

## When to use this host

Use this host when an agent needs a pre-market social sentiment summary — specifically overnight ticker momentum, mention volume, and sentiment skew — to build or filter a watchlist before market open. Do not use it for real-time intraday price data, live order execution, fundamental analysis, or earnings data; use a dedicated market data API (e.g. a price feed or OHLCV provider) or a brokerage API for those needs. Because this host exposes only one skill with no inputs, it is not suitable for targeted queries about specific tickers or custom time ranges.

## Capabilities

### Overnight Social Alpha

Retrieves a 12-hour social momentum snapshot including top movers, mention counts, engagement outliers, and sentiment scores to inform pre-market watchlist and trading decisions.

- **`fetch-overnight-alpha`** — Returns overnight social market alpha signals including a narrative snapshot, top moving tickers, mention counts, engagement metrics, and sentiment scores for the past 12 hours.

## Skill reference

### `fetch-overnight-alpha`

**Overnight Alpha** — Returns overnight social market alpha signals including a narrative snapshot, top moving tickers, mention counts, engagement metrics, and sentiment scores for the past 12 hours.

*Use when:* Use when an agent needs a pre-market or overnight summary of which tickers are generating social momentum, engagement outliers, and sentiment skew to inform trading or watchlist decisions.

*Not for:* Do not use for real-time intraday price data or order execution; use a market data or brokerage API instead. Not suitable for fundamental analysis or earnings data.

**Returns:** Returns a 12-hour overnight alpha report with a narrative snapshot string and a movers array of top tickers each containing mention counts, engagement metrics, unique author counts, sentiment score, sentiment label, and a per-ticker analysis string.

**Example:** `GET https://capable-grace-production-ab1c.up.railway.app/alpha/overnight`

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