Name: ClearMarket: editorial review
Rating: 3.5
Author: PredictionToolkit

What is ClearMarket?

A Resolution Clarity Grade (RCG) assigns A, B or C to the clarity of settlement terms. Named sources and provenance help explain that assessment, including the classified absence of a source. The grade is about contract interpretation, not the probability of a winning outcome.

Cross-venue research uses shared question IDs and also_on links while each event stays a single-venue bundle. The catalyst calendar adds relevant real-world events. Inspect live API schemas because older reference specimens can combine events differently; prices refresh hourly.

Who it is for

Researchers comparing contract definitions.
Risk teams reviewing source clarity.
Developers building read-only research agents.

Features and coverage

Resolution grades
Read A/B/C clarity assessments for markets.
Named resolution sources
Inspect declared sources, provenance or classified absence.
Cross-venue questions
Follow shared question IDs and also_on links.
Catalyst calendar
Find real-world events associated with upcoming market changes.
Keyless public API
Search and retrieve event and market records.
Read-only MCP
Use event, market, catalyst and signal tools in supported clients.
Open reference materials
Inspect schemas, database definitions, enrichment scripts and specimens.

Workflows with ClearMarket

Review a settlement question

Find the market, inspect grade and provenance, then read original rules for remaining ambiguity.

Compare venue definitions

Follow question links and inspect the separate venue events.

Build a research agent

Connect the HTTP MCP endpoint and request concise event detail for large market bundles.

Pricing and total cost

The read-only site, REST API and MCP endpoint are open without signup or a key. The repository is MIT-licensed.

Getting started

Before you start: Prices update hourly.

Search the public API or website and open an event/market record.
Inspect source, grade and catalyst dates; follow venue-question links.
For agents, connect the documented HTTP MCP endpoint.

Hourly prices are unsuitable as an execution-price feed.

Read the resolution methodology

Useful links

What to check

Prices update hourly.
RCG measures clarity, not outcome probability.
Events are single-venue; shared question IDs link venues.
Prefer Polymarket condition ID where URL lookup is unsupported or best-effort.
Older specimens can use a combined-event schema unlike the live API.

A closer look

Ratings & reviews

Editorial rating

3.5/ 5

0 user reviews

PredictionToolkit editorial

Our take on ClearMarket

Open access and explicit clarity grades make the reference easy to inspect. Hourly prices and differing specimen schemas limit execution-sensitive use.

Based on documented features, setup and access terms. How we rate