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Documentation Index

Fetch the complete documentation index at: https://docs.delphimarkets.com/llms.txt

Use this file to discover all available pages before exploring further.

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Changelog

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2026-05-01
Trading API: place orders across six prediction-market exchanges
New: Trading APIPlace, query, and cancel orders across six prediction-market exchanges through a single unified API.
  • POST /api/v1/orders — place an order on any supported exchange
  • GET /api/v1/orders — list tracked orders (optional exchange filter)
  • GET /api/v1/orders/{id} — get current status, fill data, and price for a specific order
  • DELETE /api/v1/orders/{id} — cancel a resting order
Supported exchanges:
  • Polymarket — EIP-712 signed orders on Polygon
  • Kalshi — server-side RSA-PSS signing
  • Opinion Labs — EIP-712 signed orders on BNB Chain
  • Gemini Predictions — server-side HMAC-SHA512 signing
  • Limitless — EIP-712 signed orders on Base
  • Predict.fun — EIP-712 signed orders on BNB Chain (Kernel smart wallet)
For on-chain exchanges, signatures are produced client-side using the @delphimarkets/sdk build*Order() helpers — your private key never leaves your machine. The Delphi server forwards the signed payload to the exchange and tracks the order on your behalf.New: Credential Management
  • POST /api/v1/users/{userID}/credentials — register exchange credentials (Kalshi RSA, Gemini HMAC, etc.)
  • GET /api/v1/users/{userID}/credentials — list which exchanges you’ve connected (values not returned)
Credentials are encrypted at rest. Each user has at most one credential set per exchange. The {userID} path segment is ignored — the server always resolves the user from your X-API-Key. Pass _ as a placeholder.New: Polymarket Onboarding helpersOne-time helpers to set up a Polymarket trading account:
  • POST /api/v1/polymarket/derive-credentials — derive and store CLOB HMAC credentials from your EOA private key in one call
  • POST /api/v1/polymarket/verify-credentials — confirm stored credentials are still valid against the live CLOB
  • POST /api/v1/polymarket/safe-address — compute the deterministic Gnosis Safe (proxy) address for an EOA via CREATE2 (no on-chain calls)
Docs
  • Full OpenAPI spec coverage with switchable per-exchange examples on POST /orders
  • Three new tag groups in the API reference: Trading, Credentials, Polymarket Onboarding
  • Hand-written guides for each supported exchange covering signing flow, prerequisites, and end-to-end examples
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2026-04-16
Semantic search, market matching for all exchanges
New: Semantic Market Search (Max+ plans)
  • POST /api/v1/search/semantic — AI-powered hybrid search using natural language queries
  • Combines semantic similarity (embeddings) with keyword matching for best-of-both-worlds results
  • Searches across all 9 exchanges: Kalshi, Polymarket, Limitless, Predict.fun, Opinion Labs, Gemini, Manifold, ForecastEx, and PredictIt
  • Supports filters: exchange, category, active_only, limit
  • Returns ranked results with similarity scores and delphi_id cross-references
New: Market Matching expanded to all exchanges
  • Delphi ID matching and cluster lookups now include Gemini, Manifold, ForecastEx, and PredictIt (previously only Kalshi, Polymarket, Limitless, Pfun, Opinion Labs)
  • GET /api/v1/delphi/{delphi_id}/markets now returns matched markets across all 9 exchanges
  • New cluster lookup endpoints:
    • GET /api/v1/gemini/{market_id}/cluster
    • GET /api/v1/manifold/{market_id}/cluster
    • GET /api/v1/fex/{market_id}/cluster
    • GET /api/v1/predictit/{market_id}/cluster
  • delphi_id and cluster_id fields added to Gemini, Manifold, ForecastEx, and PredictIt market details
  • GET /api/v1/search/markets now returns market references from all 9 exchanges
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2026-02-17
Delphi ID market matching, new exchanges, and test tickers
New: Delphi ID Market Matching (Pro+ plans)
  • GET /api/v1/delphi/{delphi_id}/cluster — look up cluster metadata (title, canonical reference, market count)
  • GET /api/v1/delphi/{delphi_id}/markets — find equivalent markets across Kalshi, Polymarket, Limitless, Pfun, and Opinion Labs
  • Both endpoints require Pro, Max, or Admin plan
  • delphi_id field added to Limitless, Pfun, and Opinion Labs market details responses
New: ForecastEx Exchange
  • GET /api/v1/fex/{market_id}/market — market details
  • GET /api/v1/fex/markets — list all markets
  • GET /api/v1/fex/{market_id}/tradehistory — trade history
New: PredictIt Exchange
  • GET /api/v1/predictit/{market_id}/market — market details
  • GET /api/v1/predictit/markets — list all markets
  • GET /api/v1/predictit/{market_id}/prices — price history
New: Manifold Exchange
  • GET /api/v1/manifold/{market_id}/market — market details
  • GET /api/v1/manifold/markets — list all markets
  • GET /api/v1/manifold/{market_id}/orderbook — orderbook snapshots
  • GET /api/v1/manifold/{market_id}/prices — price/ticker history
  • GET /api/v1/manifold/{market_id}/tradehistory — trade history
New: Gemini Exchange
  • GET /api/v1/gemini/{market_id}/market — market details
  • GET /api/v1/gemini/markets — list all markets
  • GET /api/v1/gemini/{market_id}/orderbook — orderbook snapshots
  • GET /api/v1/gemini/{market_id}/prices — price/ticker history
  • GET /api/v1/gemini/{market_id}/tradehistory — trade history
New: Opinion Labs Exchange
  • GET /api/v1/opinion/{market_id}/market — market details
  • GET /api/v1/opinion/markets — list all markets
  • GET /api/v1/opinion/{market_id}/orderbook — orderbook snapshots
  • GET /api/v1/opinion/{market_id}/prices — price/ticker history
  • GET /api/v1/opinion/{market_id}/tradehistory — trade history
Docs: Test tickers added for all new exchanges
  • Opinion Labs: 10014
  • ForecastEx: ACD_1226_429.0
  • Gemini: GEMI-BTC15M2603170230-HI75245D64
  • Manifold: 0AqEut9qzZ
  • PredictIt: 34088
  • Delphi ID: delphi_0016d5d59aae
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Initial
Starting changelog
Initial tracking of API and documentation updates.