NythosX Agent Tools
Gas fees and USD tx costs on 6 chains, cheapest-chain ranking, URL to Markdown. Pay per call, x402.
| Endpoint | https://tools.nythosx.com/mcp (streamable-http) |
|---|---|
| Registry version | 1.0.0 |
| Now | 4 tools · grade A (98) · pin ts_f3ba645101790a83674b46129f6f8f38 · protocol 2025-06-18 |
| First / last listed | 2026-10-25 05:27 UTC / 2026-10-25 05:27 UTC |
| Grade over time | 2026-10-25: A (98), 4 tools |
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Tools: list_chains get_gas_price compare_gas_costs read_url_as_markdown
list_chains | List supported chains (Base, Ethereum, Arbitrum, Optimism, Polygon, Solana) and the gas-unit constants used by the paid tools (free). Always returns the full, unfiltered list of all 6 chains (no input/filter params). gasUnits.{transfer|usdc_transfer|swap} are plain integers: the gas units a typical transaction of that type costs on an EVM chain (evm) or in Solana compute units (svm) — multiply by params: none |
get_gas_price | Current gas and fee prices for one chain. Current gas and fee prices for Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: slow/standard/fast tiers and the USD cost of a transfer, USDC transfer and swap. Updated every 15 seconds. Paid via x402: the first call returns 402 with payment requirements; retry with a PAYMENT-SIGNATURE header (or, over MCP, with payment in _meta["x402/payment"]) to g params: chain* |
compare_gas_costs | Where is it cheapest to send this transaction right now?. Ranks all 6 supported chains (Base, Ethereum, Arbitrum, Optimism, Polygon, Solana) by USD cost for a transaction type (transfer, USDC transfer or swap) at a speed tier (slow/standard/fast). Returns the ranking, the cheapest chain, and any chains queried in parallel that didn't respond (in failed[]). Costs $0.005 USDC per call (x402). params: tx, tier |
read_url_as_markdown | Convert any web page into clean, readable Markdown. Fetches a public web page and returns clean Markdown: title, byline, site name, excerpt, word count and article body. Respects robots.txt, blocks private hosts, follows up to five redirects, caps the page at 3 MB. links=true adds outbound links. Not charged on failure: 403 if robots.txt disallows the path, 415 for non-HTML, 422 if no article text params: url*, links |
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