---
title: "Per-contract bid/ask/mid distribution"
method: GET
path: "/v1/contract-ratio/{symbol}"
tags: ["Ratios"]
---

# Per-contract bid/ask/mid distribution

`GET /v1/contract-ratio/{symbol}`

Single-contract counterpart to `/v1/chain-ratio/{ticker}`. Returns
`askRatio`, `bidRatio`, `midRatio`, `aggressionRatio`, and a
`bias`/`aggression`/`confidence` interpretation for one specific
OPRA option symbol.

## Path parameters

- `symbol` string, required

## Query parameters

- `date` string, date
- `timeframe` '5m' | '15m' | '1h' | '4h' | '1d'
- `min_premium` integer

## Response `200`

Contract ratio analysis with interpretation.

- ContractRatioSuccess
  - `data` ContractRatioResponse, required
    - `symbol` string, required
    - `ticker` string, required
    - `optionType` 'CALL' | 'PUT' | 'UNKNOWN', required
    - `date` string, date, required
    - `timeframe` string, required
    - `tradeCount` integer, required
    - `totalVolume` integer, required
    - `totalPremium` number, required
    - `contractRatios` ContractRatios, required
      - `askRatio` number, required
      - `bidRatio` number, required
      - `midRatio` number, required
      - `aggressionRatio` number, required
    - `interpretation` RatioInterpretation, required
      - `bias` 'BULLISH' | 'BEARISH' | 'NEUTRAL' | 'MIXED', required
      - `aggression` 'HIGH' | 'MEDIUM' | 'LOW', required
      - `confidence` 'HIGH' | 'MEDIUM' | 'LOW', required
      - `description` string, 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`).
- `404` — Unknown resource (ticker / sector / window with no data).
- `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.net/skylit/apis/flowseeker-skylit-public-api.md) · [All operations](https://skmtc.net/skylit/apis/flowseeker-skylit-public-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/skylit/flowseeker-skylit-public-api/revisions/3280190b1b24/schema)