# Assay > Sybil filtering for Solana. Live today: a launch-risk check for any Solana token, read from mainnet on every call: top holders, wallets linked by direct transfers, mint and freeze authority, flags and a verdict. Free in beta, no key, no account. List assays, appeals and paid plans are planned. ## Live API - `GET https://www.assayonsol.io/api/launch-risk?mint=`: JSON, no key, free in beta, cached 5 minutes per mint - [API docs](docs.html): every field, errors, how the check works - [OpenAPI](agents/openapi.yaml): the live endpoint; planned paths carry `x-status: planned` ## For agents - [Agent quickstart](agents.html): one HTTP call, the fields an agent acts on, the rules - [SKILL.md](agents/SKILL.md): when to call the live endpoint, and the rules - [MCP card](agents/mcp.json): planned. Use the HTTP API today (curl / fetch); the MCP server and skill package ship when the API leaves beta. ## For people - [Try it](index.html#try): the live check, no sign-up - [App](app/index.html): Sign in with Solana; launch-risk checks with this tab's history; a demo workspace shows list assays and appeals - [Planned pricing](index.html#pricing): everything is free in beta ## Trust - [Security model](security.html): read-only, no keys, no signatures, no custody, no payments - [Changelog](changelog.html) - X: https://x.com/Assay_sol ## Payment - Beta: calls are free; the x402 flow is the planned paid tier and is not enforced.