Pricing

$30.00 / 1,000 verified cross-market pairs

Polymarket and Kalshi Arbitrage Verifier

Verify Polymarket and Kalshi contract matches with execution-sized order-book VWAPs, current fee math, one-tick stress, semantic conflict flags, and explicit non-atomic execution warnings. Built for agents, analysts, and trading dashboards that need evidence beyond headline price gaps.

Pricing

$30.00 / 1,000 verified cross-market pairs

Rating

0.0

(0)

Developer

João Ferreira

Actor stats

Bookmarked

Total users

Monthly active users

8 days ago

Last modified

Categories

Developer tools

Automation

Other

Explicit contract pairs

explicitPairs

Optional

Pairs to verify directly. Each object needs polymarketMarketId and kalshiTicker. Explicit pairs are evaluated even when semantic conflicts are found.

Type:object[]

Max. items:100

Default:

[]

Example:

[
  {
    "polymarketMarketId": "1234567",
    "kalshiTicker": "KXEXAMPLE-26DEC31"
  }
]

Discover additional pairs

discoveryEnabled

Optional

Search the active public universes in addition to verifying explicit pairs. Disable for a faster deterministic audit run.

Type:boolean

Default:true

Example:true

Topic filters

queries

Optional

Optional topic phrases. Every phrase token must occur in the Polymarket title. Leave empty to scan the fetched universe.

Type:string[]

Max. items:20

Default:

[]

Example:

[
  "Bitcoin",
  "Federal Reserve"
]

Contracts per leg

contracts

Optional

Equal position size used to walk each platform's executable order book. The Polymarket five-share minimum is enforced.

Type:number

Minimum:5

Maximum:1000

Default:5

Example:5

Maximum candidate pairs

maxCandidates

Optional

Maximum matched pairs to verify. The first three dataset records per run are free.

Type:integer

Minimum:1

Maximum:100

Default:25

Example:25

Markets fetched per platform

universeLimitPerPlatform

Optional

Maximum active markets fetched independently from Polymarket and Kalshi before semantic candidate matching.

Type:integer

Minimum:100

Maximum:2000

Default:1000

Example:1000

Minimum semantic candidate score

minSemanticScore

Optional

Minimum automated title/date/numeric compatibility score. This score never proves resolution-rule equivalence.

Type:number

Minimum:0

Maximum:1

Default:0.68

Example:0.68

Maximum close-time difference

maxCloseDifferenceHours

Optional

Maximum hours between platform close or expected-expiration timestamps before the pair receives a hard conflict.

Type:number

Minimum:0

Maximum:720

Default:48

Example:48

Kalshi taker fee coefficient

kalshiTakerFeeRate

Optional

Fee coefficient used with ceil(rate x contracts x price x (1-price)). Defaults to the current general schedule; market exceptions must be reviewed.

Type:number

Minimum:0

Maximum:0.25

Default:0.07

Example:0.07

Only positive one-tick candidates

positiveAfterStressOnly

Optional

Return only pairs whose best route remains positive after moving both entry prices one tick adversely, assuming equivalent rules.

Type:boolean

Default:false

Example:false

Include free run summary

includeSummary

Optional

Emit an always-free summary with universe, lookup, candidate and returned-record counts, including when no pair qualifies.

Type:boolean

Default:true

Example:true

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