---
title: "Batch resolution fractions for up to 200 markets"
method: GET
path: "/v1/resolutions"
tags: ["Resolutions"]
---

# Batch resolution fractions for up to 200 markets

`GET /v1/resolutions`

## Request

- Base URL: `https://md.kairos.trade`
- URL: `https://md.kairos.trade/v1/resolutions`
- Auth: one of:
  - none
  - API key in header `X-Client-Id` and API key in header `X-Api-Key` and API key in header `X-Api-Secret`

Returns the resolved YES-side fraction (payout_numerators[0] / sum) for each requested market that has resolved; unresolved markets are omitted entirely from the response (never a guessed value). Providers are keyed either directly by market id/ticker (kalshi) or by their on-chain condition id (polymarket, predictfun, opinion). Rate-limit bucket: LIGHT.

For scalar/range markets with no payout numerators, the venue's settled value is used as the fraction instead of a YES/NO split (kalshi-keyed providers only).

The response is ETagged (strong ETag) with a `Cache-Control` header; a matching `If-None-Match` returns 304.

## Query parameters

- `provider` 'kalshi' | 'polymarket' | 'opinion' | 'predictfun' | 'hyperliquid' | 'kalshi_offchain' | 'dome', required
- `market_ids` string, required

## Response `200`

Map of market_id to resolved YES-side fraction, for resolved markets only.

- ResolutionsResponse: Map of market_id → resolved YES-side fraction (0–1). Markets with no resolution yet are omitted entirely — there is no `null`/`false` placeholder for "unresolved".
  - `resolutions` object, required

## Other responses

- `304`: Not Modified — `If-None-Match` matched the current ETag.
- `400`: Unknown provider, or `market_ids` missing/empty/exceeds 200.
- `401`: No valid credential presented. Every path returns `code: unauthorized`; the triggers differ: - An `Authorization` header on a deployment where bearer auth is not enabled (`bearer authentication is not enabled`). - A bearer token that fails verification (`invalid or expired session`), or whose token/session has been revoked (`session has been revoked`). - An incomplete or wrong API-key header set. Sending *any* of `X-Client-Id`, `X-Api-Key`, `X-Api-Secret` commits the request to the API-key path, so a partial set is rejected rather than silently degrading to anonymous limits (`valid X-Client-Id, X-Api-Key, and X-Api-Secret headers are required`). - No credential material at all while the anonymous free tier is unavailable — switched off for the deployment, forced off through the runtime kill switch, or not yet resolvable on a replica that has never read the flag (it fails closed).
- `403`: API key presented from a source IP not in that credential's whitelist.
- `429`: Two different gates return this status, both with `code: rate_limited`: - **Per-credential (or per-IP, when anonymous) weighted budget exhausted.** The message is `rate limit exceeded`, or, for anonymous callers, `anonymous rate limit exceeded — request an API key for higher limits (…)`. `Retry-After` is the whole number of seconds until the current one-minute window rolls over, floored at 1. All four `X-RateLimit-*` headers are present. - **Per-IP admission gate.** An in-process, pre-authentication guard that keeps a flood off the shared credential cache and database. The message is `too many requests from this address` and `Retry-After` is a flat `60`. Because this fires *before* authentication, the response carries **no** `X-RateLimit-*` headers at all.
- `500`: The resolutions query failed.
- `503`: The rate limiter is unreachable. Fails CLOSED — the request is rejected rather than let through unmetered.

---

[API](https://skmtc.dev/kairos/apis/kairos-market-data-api.md) - [All operations](https://skmtc.dev/kairos/apis/kairos-market-data-api/llms.txt) - [OpenAPI document](https://skmtc.dev/kairos/apis/kairos-market-data-api/revisions/01e987f59a04?raw)