---
title: "Live momentum signal vs baseline (5m / 30m / 1h windows)"
method: GET
path: "/v1/flow/{ticker}/momentum"
tags: ["Flow"]
---

# Live momentum signal vs baseline (5m / 30m / 1h windows)

`GET /v1/flow/{ticker}/momentum`

## Request

- Base URL: `https://flow-api.skylit.ai`
- URL: `https://flow-api.skylit.ai/v1/flow/{ticker}/momentum`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/skylit/apis/flowseeker-skylit-public-api/docs/v1/flow/:ticker/momentum/get.ts> (a function with typed inputs; its response is checked against the schema)

Compares the current 5-minute, 30-minute, and 1-hour flow against the
trailing per-time-of-day baseline (`/v1/flow/{ticker}/baseline`).
Returns z-scores for the 5-minute window and a one-token `trend`
classification.

## Path parameters

- `ticker` string, required

## Query parameters

- `as_of` string
- `lookback_days` integer
- `min_dte` integer
- `max_dte` integer

## Response `200`

Live momentum metrics + signal.

- MomentumSuccess
  - `data` MomentumResponse, required
    - `ticker` string, required
    - `asOf` string, date-time, required
    - `current5m` MomentumWindowMetrics, required
      - `tradeCount` integer, required
      - `premium` number, required
      - `bullishPremium` number, required
      - `bearishPremium` number, required
      - `netPremium` number, required
      - `fir` number, required
    - `current30m` MomentumWindowMetrics, required
      - `tradeCount` integer, required
      - `premium` number, required
      - `bullishPremium` number, required
      - `bearishPremium` number, required
      - `netPremium` number, required
      - `fir` number, required
    - `current1h` MomentumWindowMetrics, required
      - `tradeCount` integer, required
      - `premium` number, required
      - `bullishPremium` number, required
      - `bearishPremium` number, required
      - `netPremium` number, required
      - `fir` number, required
    - `baseline` MomentumBaselineRef
      - `timeOfDay` string, required
      - `lookbackDays` integer, required
      - `daysInBaseline` integer, required
      - `avg5mPremium` number, required
      - `stddev5mPremium` number, required
      - `avg5mFir` number, required
      - `stddev5mFir` number, required
    - `signals` MomentumSignals, required
      - `firZscore5m` number, required: Z-score of the current 5-minute FIR vs baseline.
      - `premiumZscore5m` number, required: Z-score of the current 5-minute premium vs baseline.
      - `trend` 'accelerating' | 'steady' | 'fading' | 'neutral', required
      - `interpretation` string, required: One-sentence human-readable summary.
    - `queryTimeMs` integer, required
  - `meta` Meta, required
    - `timestamp` string, date-time, required: Server-side timestamp the response was generated at.
    - `requestId` string, required: Short opaque ID for log correlation.

## Other responses

- `400`: Request validation failed.
- `401`: Missing or invalid API key.
- `402`: The account's shared Skylit credit balance is lower than this route's cost. Top up to continue. Carries `X-Credits-Remaining: 0`.
- `403`: API key revoked/expired, monthly quota exceeded, or the account's API access is suspended (`account_suspended`).
- `429`: Per-minute rate limit exceeded.
- `503`: Underlying data source temporarily unavailable, or the credit balance could not be verified (`credit_check_failed`). Safe to retry.

---

[API](https://skmtc.dev/skylit/apis/flowseeker-skylit-public-api.md) - [All operations](https://skmtc.dev/skylit/apis/flowseeker-skylit-public-api/llms.txt) - [OpenAPI document](https://skmtc.dev/skylit/apis/flowseeker-skylit-public-api/revisions/3280190b1b24?raw)