# Agent Exchange X402 API

**Canonical:** https://apis.io/apis/agentexchange-work/agentexchange-work-x402-api/  
**Provider:** Agent Exchange — https://apis.io/providers/agentexchange-work/  
**Base URL:** https://store.agentexchange.work  
**Documentation:** https://store.agentexchange.work/

Agent Exchange X402 API is one of 25 APIs that [Agent Exchange](https://apis.io/providers/agentexchange-work/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include x402. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and a getting-started guide.

The x402 API from Agent Exchange — 63 operation(s) for x402.

## Operations (60 of 63)

| Method | Path | Summary |
|---|---|---|
| GET | `/brands/check` | Live brand AI-visibility audit: score 0-100, mention rate, competitors AI names… |
| GET | `/sales/qualify` | Sales lead qualifier: AI-visibility gap -> HOT/WARM/COLD tier + evidence +… |
| GET | `/brands/visibility-index` | AI Visibility Index: scores for 25 major brands across 5 industries |
| GET | `/signal` | Live AI-visibility demand feed: which brands/categories are being checked now |
| GET | `/macro/risk-spread` | DeFi stablecoin yields vs official US T-bill rate: spread + verdict |
| GET | `/crypto/liquidations` | Liquidation pressure read: which side of the perp market is over-leveraged… |
| GET | `/macro/regime` | US macro regime read (not a rate lookup): classifies the Treasury curve into a… |
| GET | `/social/sentiment` | Real-time crypto social sentiment: scans public communities and feeds for a… |
| GET | `/property/valuation` | US residential property valuation: estimated value with a confidence band… |
| GET | `/gov/treasury` | US Treasury average interest rates + total public debt (live, official) |
| GET | `/defi/yields` | Top DeFi pools by chain/TVL (live) |
| GET | `/crypto/prices` | Spot/historical token prices by ticker, CoinGecko id, or chain:address… |
| GET | `/web/search` | Multi-source web & developer search in one call: Hacker News + GitHub + Stack… |
| GET | `/web/wikipedia` | Wikipedia knowledge lookup: titles + extract snippets + URLs for any topic… |
| GET | `/github/trending` | Top trending GitHub repos by stars (day/week/month, optional language) |
| GET | `/npm/downloads` | npm package download counts (day/week/month) |
| GET | `/hn/top` | Hacker News top stories with score, author, comments, links |
| GET | `/crypto/ai-visibility` | Does AI recommend this crypto token/protocol/chain in its category? |
| GET | `/crypto/launches` | New & trending token launches (Dexscreener): newest + most-boosted tokens… |
| GET | `/crypto/wave-radar` | Base Wave Radar: new/boosted Base token discovery fused with live liquidity… |
| GET | `/crypto/crosschain-radar` | Cross-chain attention radar: compares live discovery flow across Solana… |
| GET | `/crypto/wallet` | Wallet portfolio / bagcheck (Blockscout): any wallet's token holdings with live… |
| GET | `/crypto/security` | Token security / rug-check (GoPlus): honeypot, buy/sell tax, mintable… |
| GET | `/crypto/address-risk` | Wallet address risk & sanctions screening (AML/KYT, GoPlus address security)… |
| GET | `/crypto/dex` | Live DEX token data (Dexscreener): price, 24h volume, liquidity, buy/sell flow… |
| GET | `/crypto/whales` | Whale transfer alerts (Blockscout): largest recent USDC/WETH/cbBTC/USDT/WBTC… |
| GET | `/crypto/smart-money` | Smart-money wallet activity (Blockscout): any wallet's recent net token flows… |
| GET | `/chain/balance` | On-chain native balance (Blockscout): any address's native coin balance with… |
| GET | `/connect/token` | Token Intelligence Connector: ONE call fuses GoPlus rug-check + Dexscreener… |
| GET | `/crypto/pretrade-pack` | Pre-Trade Full Report ($0.09): rug-check + whale-concentration (top-holder % of… |
| GET | `/connect/company` | Company/Domain Enrichment Connector: RDAP domain age + registrar, DNS email… |
| GET | `/intel/opportunities` | Opportunity Intelligence Signals (scored): turns US federal spending into… |
| GET | `/intel/eu-tenders` | EU Tender Intelligence (official EU TED): live public procurement tenders… |
| GET | `/gov/contracts` | Federal Contract Opportunity Intelligence (USAspending.gov): recent federal… |
| GET | `/chain/chain-id` | EIP-155 chain ID (eth_chainId) for any of 6 chains — confirm which chain an RPC… |
| GET | `/chain/estimate-gas` | Estimate gas a tx will use (eth_estimateGas) across 6 chains — the pre-send… |
| GET | `/chain/storage` | Read a raw contract storage slot (eth_getStorageAt) across 6 chains — inspect… |
| GET | `/chain/gas` | Live gas price (Blockscout): slow/average/fast in gwei for any chain — the… |
| GET | `/chain/tx` | Transaction status & receipt (Blockscout): confirm any tx landed… |
| GET | `/chain/tx-explain` | Transaction explainer (Blockscout): plain-English decode of any tx — what… |
| GET | `/chain/supply` | Token supply & holders (Blockscout): total supply, holder count, decimals +… |
| GET | `/chain/ens` | ENS resolver, either direction on Ethereum: an ENS name (vitalik.eth) → its 0x… |
| GET | `/chain/erc20-balance` | ERC-20 token balance: any wallet's balance of any token (USDC/USDT/DAI/any… |
| GET | `/chain/code` | Contract or wallet? |
| GET | `/chain/block-number` | Latest block number (current chain tip) via eth_blockNumber — the freshness… |
| GET | `/chain/block` | Full block header via eth_getBlockByNumber — timestamp and age, transaction… |
| GET | `/chain/logs` | Event logs by contract address and/or indexed topics over a block range via… |
| GET | `/chain/fee-history` | EIP-1559 fee history via eth_feeHistory: base-fee trend over N blocks… |
| GET | `/chain/token` | ERC-20 identity read straight off the contract — name, symbol, decimals, total… |
| GET | `/chain/confirmations` | Transaction finality: status, block, current tip, confirmation count, gas used… |
| GET | `/chain/l1-fee` | The OP-stack L1 data-availability fee paid on top of L2 execution gas — usually… |
| GET | `/chain/nft` | ERC-721 owner and metadata in one call — ownerOf, tokenURI, collection name and… |
| GET | `/chain/batch` | Up to TEN on-chain reads for a single payment, run in parallel: native balance… |
| GET | `/chain/heartbeat` | One pre-action chain heartbeat: EIP-155 identity, latest block height/header… |
| GET | `/chain/allowance` | ERC-20 allowance: how much of a token a spender is approved to move from an… |
| GET | `/chain/nonce` | Account nonce / outgoing transaction count via eth_getTransactionCount — the… |
| GET | `/chain/call` | Simulate any read-only contract call via eth_call — pass a contract address +… |
| GET | `/markets/prediction` | Live Polymarket prediction-market odds: implied probabilities, 24h volume… |
| GET | `/category/ranking` | Live AI category ranking: the ranked brands AI recommends in any category, by… |
| GET | `/macro/country` | Country economic indicators (200+ countries): GDP, growth, inflation… |

…and 3 more operations. They are listed in full on the page.

## Machine-readable artifacts (12)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/agentexchange-work/refs/heads/main/openapi/agentexchange-work-x402-api-openapi.yml
- **Documentation** — https://store.agentexchange.work/llms.txt
- **APIReference** — https://store.agentexchange.work/docs
- **GettingStarted** — https://store.agentexchange.work/samples
- **X-X402Discovery** — https://store.agentexchange.work/.well-known/x402
- **StatusPage** — https://store.agentexchange.work/status
- **AgentCard** — https://raw.githubusercontent.com/api-evangelist/agentexchange-work/refs/heads/main/a2a/agentexchange-work-a2a.yml
- **AgentCard** — https://planets.agentexchange.work/.well-known/agent-card.json
- **Documentation** — https://planets.agentexchange.work/llms.txt
- **LLMsTxt** — https://raw.githubusercontent.com/api-evangelist/agentexchange-work/refs/heads/main/llms/agentexchange-work-planets-llms.txt
- **X-X402Discovery** — https://planets.agentexchange.work/.well-known/x402
- **X-X402Discovery** — https://agentexchange.work/.well-known/x402

## Other Agent Exchange APIs (12)

- [Agent Exchange MCP Server](https://apis.io/apis/agentexchange-work/mcp-server/)
- [The Agent Exchange Clearing House](https://apis.io/apis/agentexchange-work/clearing-house/)
- [Agent Exchange Agents API](https://apis.io/apis/agentexchange-work/agentexchange-work-agents-api/)
- [Agent Exchange Billing API](https://apis.io/apis/agentexchange-work/agentexchange-work-billing-api/)
- [Agent Exchange Claim API](https://apis.io/apis/agentexchange-work/agentexchange-work-claim-api/)
- [Agent Exchange Crawl API](https://apis.io/apis/agentexchange-work/agentexchange-work-crawl-api/)
- [Agent Exchange Crypto API](https://apis.io/apis/agentexchange-work/agentexchange-work-crypto-api/)
- [Agent Exchange Directory API](https://apis.io/apis/agentexchange-work/agentexchange-work-directory-api/)
- [Agent Exchange Enrichment API](https://apis.io/apis/agentexchange-work/agentexchange-work-enrichment-api/)
- [Agent Exchange Enterprise API](https://apis.io/apis/agentexchange-work/agentexchange-work-enterprise-api/)
- [Agent Exchange Handshakes API](https://apis.io/apis/agentexchange-work/agentexchange-work-handshakes-api/)
- [Agent Exchange Human Checkout API](https://apis.io/apis/agentexchange-work/agentexchange-work-human-checkout-api/)

## Tags

x402

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/agentexchange-work/agentexchange-work-x402-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/agentexchange-work/.