# Dexter x402 Marketplace — API Categories

The marketplace is continuously growing and re-verified. Statistics update in real-time as endpoints are crawled, verified, and scored.

- Prices range from $0.001 to $8.00+ per call
- All endpoints AI-verified with quality scores 75+
- Re-tested every 24 hours, re-indexed every 2 hours
- Run `./scripts/x402.sh categories` for current counts by network

---

## DeFi & On-Chain Analytics

Token pricing, smart money tracking, wallet profiling, and protocol data.

**Premium providers:** Nansen, Allium, CoinGecko

| Provider | Endpoint | What it does |
|----------|----------|-------------|
| Nansen | `/api/v1/smart-money/dex-trades` | DEX trades made by smart money wallets |
| Nansen | `/api/v1/smart-money/holdings` | Current holdings of smart money wallets |
| Nansen | `/api/v1/smart-money/netflow` | Where smart money is moving |
| Nansen | `/api/v1/tgm/who-bought-sold` | Find who bought or sold a specific token |
| Nansen | `/api/v1/token-screener` | Screen and filter tokens by criteria |
| Nansen | `/api/v1/profiler/address/pnl` | Detailed profit/loss for any wallet |
| Allium | `/api/v1/developer/prices` | Token prices across all chains |
| Allium | `/api/v1/developer/wallet/pnl` | Portfolio holdings PnL |
| CoinGecko | `/x402/simple/price` | Price and market data for coins by ID |
| CoinGecko | `/x402/onchain/search/pools` | Search liquidity pools across networks |

**Typical use cases:**
- "What are smart money wallets buying right now?"
- "Show me the PnL for this wallet"
- "Screen tokens with high smart money inflows"

---

## AI & LLM

Chat completions, embeddings, image generation, and semantic search.

**Premium providers:** OpenRouter, Gemini, Exa

| Provider | Endpoint | What it does |
|----------|----------|-------------|
| OpenRouter | `/chat/completions` | Chat completions with any supported LLM model |
| OpenRouter | `/embeddings` | Generate text embeddings |
| OpenRouter | `/messages` | Anthropic-compatible messages API |
| Gemini | `/v1beta1/models/gemini-2.0-flash-exp:generateContent` | AI image generation from text prompts |
| Exa | `/search` | Semantic web search for natural language queries |
| Exa | `/answer` | Direct AI answer using search and reasoning |
| Exa | `/research/v1/start` | Start a deep research task |

**Typical use cases:**
- "Run this prompt through Claude via OpenRouter"
- "Generate an image of a sunset over Solana beach"
- "Research the latest developments in x402 protocol"

---

## Prediction Markets

Polymarket, Kalshi, and sports betting odds data.

**Premium provider:** Dome

| Provider | Endpoint | What it does |
|----------|----------|-------------|
| Dome | `/polymarket/markets` | Search and list Polymarket prediction markets |
| Dome | `/polymarket/events` | List Polymarket events |
| Dome | `/polymarket/orderbooks` | Polymarket orderbook data |
| Dome | `/kalshi/markets` | List Kalshi prediction markets |
| Dome | `/kalshi/trades` | Kalshi trade history |

**Typical use cases:**
- "What are the odds on the next presidential election?"
- "Show me Polymarket orderbooks for crypto markets"

---

## Intelligence & Prospecting

Person and company enrichment, contact data, and social profiles.

**Premium providers:** Nyne, Apollo

| Provider | Endpoint | What it does |
|----------|----------|-------------|
| Nyne | `/person/enrichment` | Enrich person data by email, phone, or social URL |
| Nyne | `/company/search` | Search companies by industry, keyword, location |
| Nyne | `/company/funding` | Company funding and investment data |
| Apollo | `/api/v1/mixed_people/search` | Search people database |
| Apollo | `/api/v1/mixed_companies/search` | Search companies database |

**Typical use cases:**
- "Find the CEO of this company and their LinkedIn"
- "What funding has this startup received?"

---

## Blockchain Infrastructure

Multi-chain RPC, NFT data, token balances, and transaction history.

**Premium providers:** Alchemy, Quicknode

| Provider | Endpoint | What it does |
|----------|----------|-------------|
| Alchemy | `/prices/v1/tokens/by-address` | Token prices by network and contract |
| Alchemy | `/data/v1/assets/tokens/by-address` | Token balances with metadata across chains |
| Alchemy | `/data/v1/transactions/history/by-address` | Transaction history across networks |
| Alchemy | `/{chain}/nft/v3/getNFTsForOwner` | Get all NFTs owned by an address |
| Quicknode | `/{network}` | JSON-RPC gateway for 79+ blockchain networks |

**Typical use cases:**
- "What tokens does this wallet hold across all chains?"
- "Get the transaction history for this address"

---

## Security

Token contract scanning and risk detection.

**Premium provider:** Quick Intel

| Provider | Endpoint | What it does |
|----------|----------|-------------|
| Quick Intel | `/v1/scan/full` | Scan token contracts across 60+ chains for honeypots, tax abuse, proxy risks |

**Typical use cases:**
- "Is this token safe to buy? Scan the contract"
- "Check for honeypot or hidden mint functions"

---

## Payments & Finance

Prepaid cards, Venmo/PayPal, and exchange rates.

**Premium providers:** Laso Finance, Auor

| Provider | Endpoint | What it does |
|----------|----------|-------------|
| Laso Finance | `/send-payment` | Send Venmo or PayPal payment with USDC |
| Laso Finance | `/get-card` | Order a prepaid card (US only) |
| Auor | `/v1/rates/today/v1/rates` | Current exchange rates |
| Auor | `/amadeus/v1/search` | Flight search |

**Typical use cases:**
- "Send $50 to john@example.com via Venmo"
- "Order a prepaid card with $100"

---

## Documents & Parsing

AI-powered document extraction and parsing.

**Premium provider:** Reducto

| Provider | Endpoint | What it does |
|----------|----------|-------------|
| Reducto | `/parse` | Parse PDFs, images, and spreadsheets |
| Reducto | `/extract` | Extract structured data from documents |

**Typical use cases:**
- "Extract the data from this PDF invoice"
- "Parse this spreadsheet into structured JSON"

---

## Browsing the Marketplace

To get the latest endpoints, use the search command:

```bash
# All endpoints
./scripts/x402.sh search

# Filter by keyword
./scripts/x402.sh search "token price"
./scripts/x402.sh search "twitter"
./scripts/x402.sh search "swap"

# Get network breakdown
./scripts/x402.sh categories
```

The bazaar is always current — the Dexter crawler re-indexes every 2 hours and the AI verifier re-tests every 24 hours. Quality scores below 75 are automatically delisted.