Token Sniffer is a great place for a person to paste an address and read an audit. But a trading bot or AI agent can't visit a website — it needs an API it can call before every trade. That's a different tool. Here's the agent-native one.
Paste a Base token — this is the same JSON verdict an agent gets from one call. Free, no account.
Powered by the free trial · for unlimited checks run npx @true402.dev/rugcheck 0x… or wire the API into an agent.
Token Sniffer is free, multi-chain, and genuinely useful: paste a token, get a contract audit — ownership, mint, fees, holder distribution, honeypot flags. For a human spot-checking one token in a browser, it does the job well. The friction shows up the moment you want to do that automatically.
An autonomous agent rug-checking every token before it trades needs a machine call that returns JSON — not a web page, and not an API gated behind a signup and a key it has to manage. Most rug-checkers are built for the human, not the agent. true402 inverts that: it's API-first, and the wallet is the account.
| Token Sniffer | true402 | |
|---|---|---|
| Built for | a human, in a browser | an agent / bot, programmatically |
| Integration | website (manual) | one call: API · MCP · SDK · CLI |
| Auth | account + key for the API | none — the wallet pays per call |
| Pricing | free web UI | ~$0.005–0.01/call + a free trial |
| The check | contract audit + heuristics | structural + liquidity + live buy/sell sim (2 sizes) |
| Coverage | many chains | Base (focused) |
Not better or worse — a person spot-checking a token vs. a bot that has to check every token it touches.
# One call, JSON verdict, no account, no API key. Free to try (a few/day, no wallet).
npx @true402.dev/rugcheck 0x<token> # terminal one-liner
curl -s -X POST https://true402.dev/api/v1/base/token-report \
-H 'content-type: application/json' -d '{"token":"0x<token>"}' # raw API (pay over x402)
# → { "verdict": { "rating": "avoid|caution|ok", "score": 0-100, "reasons": [...] } }Native packages for ElizaOS, LangChain, and the Vercel AI SDK, an MCP server, or the raw endpoint — all pay-per-call, no key.
Token Sniffer is primarily a website built for a person to paste a token address and read an audit. It has offered an API, but programmatic access means signing up and managing an API key, and it is not designed to be dropped into an autonomous agent that pays per call. If you are building a trading bot or an AI agent that needs to rug-check every token before it trades, you want an API-first tool with no account — which is the gap true402 fills.
true402. Where Token Sniffer is a human-facing web tool, true402 is API-first and agent-native: a single call (REST, MCP, an SDK, or a CLI) returns a rug/honeypot verdict for a Base token, paid per call over x402 in USDC — no account, no API key, the wallet is the identity. It runs the contract structure check, liquidity depth, and a live buy/sell simulation, and is built to be wired into a LangChain / Vercel AI SDK / ElizaOS / MCP agent in one line.
POST the token address to an API that returns a machine-readable verdict. true402's token-report endpoint returns JSON (avoid/caution/ok + score + reasons) from an on-chain honeypot simulation, liquidity, and structural analysis — pay-per-call over x402, no signup. For a terminal one-liner, `npx @true402.dev/rugcheck 0x…` does the same and is free to try (a few checks a day, no wallet).
Token Sniffer is a free, multi-chain web tool great for a human doing a manual check in a browser. true402 is agent-native: API / MCP / SDK / CLI, pay-per-call over x402 with no account or API key, focused on Base, returning a JSON verdict from a live buy/sell simulation plus structural and liquidity checks. They serve different jobs — a person spot-checking a token versus a bot or agent that has to check every token it touches, programmatically and at scale.