Acquisition
Feb 2026Polymarket announced it was acquiring Dome and the founders said they would join Polymarket.
SourceCompany research
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Overview
Dome was a YC Fall 2025 startup that built a unified API/SDK for prediction markets such as Polymarket and Kalshi, then was acquired by Polymarket in February 2026 and entered a wind-down period for its standalone API.
Primary product
Unified API and SDK for prediction markets
Founded
2025
Headquarters
New York, New York, United States
Team size
1-10
Work style
Onsite
Industry
Software Development
Sub-industry
Prediction market infrastructure / financial data API
Offices
New York, New York, United States
Business model
B2B SaaS
API-as-a-Service
Usage-based subscriptions
Freemium / free tier
Funding
People & investors
Work & culture
Builder-first and ego-less, with an emphasis on shipping, technical ownership, and in-person collaboration. The team explicitly expected all engineers to write production code and operate in ambiguity.
Work style
Onsite
Visa sponsorship
No
Compensation
The public Founding Software Engineer posting listed $180K-$260K base salary, 0.50%-2.00% equity, relocation support, and an in-person New York role; the same posting said US citizen/visa-only.
Benefits
Competitive salary
Meaningful founding-level equity
Relocation provided
Direct ownership of critical infrastructure
Close collaboration with founders
Product & market
Pricing
Free tier plus paid, usage-based API subscriptions
Differentiators
- —One unified API/SDK across multiple prediction markets
- —Granular real-time and historical orderbook/pricing data
- —Cross-platform market matching and normalization
- —Websocket/webhook-based live updates
- —SDK-first developer experience
- —Order-routing capabilities in beta
Technology
TypeScript
Python
Node.js
REST APIs
WebSockets
Webhooks
AWS
GCP
DynamoDB
ECS/Fargate
S3
EC2
IAM
Rust
Signoz
Claude Code
Conductor
Customers
Developers building prediction market apps
Traders and market makers
Bots and dashboard builders
Fintech companies
AI-agent builders
Competitors
pmxt
PolyRouter
OddsPipe
Propheseer
OpenMarkets
Scale & contact
Signals & risks
Shutdown
Apr 2026Dome's docs said the standalone Dome APIs would reach end of life on April 28, 2026, with support already winding down after the acquisition.
SourceLatest news
Dome blog · Jul 2026
Dome announced an OpenServ AI partnership to let developers stream prediction data into agents and automate actions across markets.
Dome blog · Feb 2026
Official acquisition announcement. Dome said Polymarket was acquiring the company, support would continue through March 31, 2026, and standalone service support/SLA would not be guaranteed after that.
The Block · Feb 2026
Independent reporting on Polymarket's acquisition of Dome, noting Dome's YC Fall 2025 cohort and citing $500k from YC plus a $4.7M seed round.
Forbes · Nov 2025
Forbes profiled Dome as a YC Fall 2025 startup and described it as a unified API for prediction markets.
Jobs and careers at Dome
0 jobs at Dome
No open positions
Check back later for new openings