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HBAR
For developers

The SentX API

Every listing, sale, floor and trait on SentX is reachable over REST. Four ways in, from anonymous market data to earning commission on trades you route.

Read the docs Get a key

OpenAPI 3 spec at api.sentx.io/openapi.json. Agents start at api.sentx.io/llms.txt.

Pick your lane

Four ways in

Same API underneath. The key you hold decides what it will do for you.

Public data

Listings, sales activity, collection stats, floor prices, trait rarity and wallet holdings over plain GET requests. A free key from your settings page unlocks it.

Your account, scripted

The same key can act for your wallet, one permission at a time. Collection offers are live today: place, top up and cancel order-book bids from a script while your NFTs and HBAR never leave your wallet. Each capability is a switch in your settings, off until you flip it.

Affiliate

List, buy and mint for your users from your own app and earn a share of the marketplace fee on every trade you route. Commission settles on chain, straight to your wallet, at the moment of sale. One rule: trading goes through the API end to end.

AI agents

Built for Claude and any MCP client. A key costs nothing and takes one request, no account needed. The MCP server exposes eight market tools and is read-only by design: an agent can research the whole market and never spend a tinybar.

Three steps

Connect an agent

1

Create a key

One request. The sxagent- key is shown once, so store it. Unused keys expire after 7 days; the first call makes a key permanent. Prefer one you can see and revoke later? Create it from the agent keys card in your settings instead. 

curl -X POST https://api.sentx.io/v1/agent/keys \
  -H "content-type: application/json" \
  -d '{"label": "my research agent"}'
2

Point your client at the MCP server

Works with Claude Desktop, Claude Code and anything that speaks MCP over Streamable HTTP. 

{
  "mcpServers": {
    "sentx": {
      "url": "https://mcp.sentx.io/mcp",
      "headers": { "x-api-key": "sxagent-..." }
    }
  }
}
3

Ask it something real

The tools cover collections, floors, listings, trait rarity, sales activity, single NFTs, wallet holdings and open offers. "What is the cheapest Laser Eyes on the floor" is now a one-liner. Plain REST is always there too, documented for machines at api.sentx.io/llms.txt.

Rate limits answer 429 with a retryAfter you should honor. Stuck? Ask on Discord.