Pred
Pred (PRED) is a fully decentralized, peer-to-peer sports prediction exchange built on Base, Coinbase's Ethereum Layer 2 network. Rather than a traditional sportsbook, Pred runs a real-time central limit order book where traders take LONG (YES) and SHORT (NO) positions on sporting outcomes priced between 0.00 and 1.00 USDC, and prices emerge from live supply and demand. Users keep full self-custody of collateral through per-user Gnosis Safe proxy wallets and authorize every order with EIP-712 signatures, with on-chain settlement of USDC on Base. Winning traders are welcome with no account limits, sub-200ms order execution and spreads under 2%. Pred publishes a documented HTTP trading API (login-with-signature auth, market discovery, order placement/cancellation, portfolio) plus an Ably WebSocket stream for real-time orderbook and order events. Initial markets cover the English Premier League and NBA. The company has raised $2.5M backed by Accel, Coinbase Ventures and Reverie.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Pred the way a machine reads it — 20 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Pred scores 43.8/100 (developing), with a separate agent-readiness read of 30/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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<img src="https://apis.io/badge/pred.svg"
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title="Pred on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/pred/card.svg"
alt="Pred Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Pred
Each block below is one kind of artifact we hold for Pred. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 7
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Pred Authentication API
Required headers, token refresh, and EIP-712 CreateProxy signature for login. For overview, getting started, and environment configuration, see **Overview**. ## Required headers...
Pred Market Discovery API
Market information and discovery (public; no auth). Use this section to understand **parent_market_id** and **market_id** and to list all markets. ## What are parent_market_id a...
Pred Orders API
Order placement, cancellation, and management endpoints. ## EIP-712 order signature All orders must be signed using EIP-712. Format: `0x
Pred Overview API
## About PRED PRED is a fully decentralized prediction market platform built on Base (Ethereum L2), enabling users to trade on real-world events with LONG and SHORT positions—si...
Pred Portfolio API
Portfolio, balance, positions, and open orders. **Endpoints:** - Balance: `GET /api/v1/portfolio/balance` - Positions: `GET /api/v1/portfolio/positions` - Earnings: `GET /api/v1...
Pred User API
Safe approval endpoints for enabling trading on your proxy wallet. ## Safe approval signature — raw secp256k1 - Sign the `transactionHash` from prepare response **directly** (ra...
Pred WebSocket API
PRED uses [Ably](https://ably.com/) for real-time WebSocket data. Use Ably's token auth with `POST /api/v1/auth/ably` as your `authCallback`. ## Token auth Call `POST /api/v1/au...
Scroll within the panel for all 7 ·
Open Collections 8
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONPRED Trading Platform Authentication API
OPEN COLLECTIONPRED Trading Platform Authentication Market Discovery API
OPEN COLLECTIONPRED Trading Platform Authentication Orders API
OPEN COLLECTIONPRED Trading Platform Authentication Overview API
OPEN COLLECTIONPRED Trading Platform Authentication Portfolio API
OPEN COLLECTIONPRED Trading Platform Authentication User API
OPEN COLLECTIONPRED Trading Platform Authentication WebSocket API
OPEN COLLECTIONScroll within the panel for all 8 ·
Arazzo Workflows 1
Real integrations are rarely a single call. Arazzo describes the multi-step sequences — auth, then create, then confirm — so both a human and an agent can follow the choreography, not just the endpoints.
Multi-step API workflows described with the Arazzo specification.
Event Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
PRED Real-Time API (Ably WebSocket)
Real-time market and order data for the Pred prediction exchange, delivered over Ably WebSocket. Obtain an Ably token via POST /api/v1/auth/ably (use it as Ably authCallback). T...
ASYNCAPISecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Pred — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Access & Security 2
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 3
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/pred · machine-readable index on apis.io
This is an independent, third-party profile of Pred, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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