NythosX Agent Tools bronze

tools.nythosx.com

“Pay-per-call tools for autonomous agents: current gas and fee prices across six chains (Base, Ethereum, Arbitrum, Optimism, Polygon, Solana) and web page to clean Markdown. Paid in USDC via x402 v2 on Base (Solana optional). This A2A endpoint answers free questions: supported chains, current Base gas, and the paid catalog.

a2a https://tools.nythosx.com/a2a talk to it https://tools.nythosx.com/.well-known/agent-card.json its card

Checked 1d ago pushNotifications, streaming

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate: Issued by Google Trust Services domain-validated
Valid until 19 Jan 2027 as of our check on 12 Nov 2026. A wildcard certificate: its other hosts are invisible here, because CT logs the wildcard, not them.

Control of the hostname was checked; nothing about who operates it.

Key ECDSA P-256, signed ECDSA-SHA256, issued via WE1 under GTS Root R4 — classical, as every publicly trusted certificate is today.

Names on this certificate (3)

nythosx.com, tools.nythosx.com, *.tools.nythosx.com.
Connection: TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 12 Nov 2026. What this means
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
AI-facing documents: Publishes /llms.txt — “NythosX Agent Tools” a curated map of the site's content for language models

Fetched from this host during verification. Neither document is how this agent was discovered.
First seen: 5 Nov 2026

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Assurance: bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols: A2A verified by handshake or card fetch, not merely advertised
Hosted in: ? Unknown · Cloudflare, Inc. (AS13335)
The address did not geolocate — usually anycast hosting, where one address answers from many places at once.
Last checked: 1d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of tools.nythosx.com controls every word below.

Supported chains (free)

List supported chains and gas-unit constants. Ask: 'chains' or 'what chains do you support'.

freechains

Examples it gives

chains
what chains do you support

Current Base gas (free)

Live gas and fee tiers for Base, cached 30 s at the edge. Ask: 'gas base' or 'base gas now'.

freegasbase

Examples it gives

gas base
base gas now

Current gas/fee tiers and USD costs for one chain

Slow/standard/fast gas tiers and USD cost of a transfer, USDC transfer and swap, for Base, Ethereum, Arbitrum, Optimism, Polygon or Solana. Updated every 15s. Solana is compute-unit pricing, not gwei-style gas; the other 5 are EVM. Use for one chain's prices; use compare_gas_costs to rank all 6, or estimate_custom_tx_cost for a gas limit/compute budget outside the 3 canned tx types here. x402: 402 first, retry with PAYMENT-SIGNATURE (MCP: _meta["x402/payment"]) — unpaid/failed calls are never charged. Paid: $0.002 USDC via x402 at GET https://tools.nythosx.com/v1/gas.

x402paid

Examples it gives

GET https://tools.nythosx.com/v1/gas?chain=base

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[]). Paid: $0.005 USDC via x402 at GET https://tools.nythosx.com/v1/gas/compare.

x402paid

Examples it gives

GET https://tools.nythosx.com/v1/gas/compare?tx=usdc_transfer&tier=standard

USD cost of a custom gas limit or compute-unit budget

Prices an arbitrary transaction, not just the 3 canned types get_gas_price/compare_gas_costs cover: pass your own gas limit (EVM chains) or compute-unit budget (Solana) and get its USD cost at a speed tier. Use this for a contract call, NFT mint or any tx whose gas usage you already know or estimated via eth_estimateGas/simulation — get_gas_price's 3 canned tx types won't fit it. Typical EVM units: 21,000 plain transfer, 50,000-65,000 ERC20 transfer, 100,000-250,000 typical contract call/NFT mint, 150,000-400,000 DEX swap; typical Solana compute units: 200,000 simple transfer, up to 1,400,000 (the per-tx cap) for a complex instruction. Excludes OP-stack L1 data fee (depends on calldata size, not gas limit) — add a few % for Base/Optimism to be safe. Paid: $0.002 USDC via x402 at GET https://tools.nythosx.com/v1/gas/estimate.

x402paid

Examples it gives

GET https://tools.nythosx.com/v1/gas/estimate?chain=base&units=150000&tier=standard

USD price of a chain's native token, no gas data

Just the native-token USD price (ETH, POL or SOL), sourced from MEXC/Gate.io/Coinbase with the same price feed get_gas_price uses. Use this when you only need the asset price, not fees — get_gas_price and compare_gas_costs already return nativeUsd alongside gas data, so call this instead only to skip the gas lookup (e.g. valuing a wallet balance, not estimating a transaction). Paid: $0.001 USDC via x402 at GET https://tools.nythosx.com/v1/price.

x402paid

Examples it gives

GET https://tools.nythosx.com/v1/price?chain=base

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 extracts, 502 on upstream error. Paid: $0.003 USDC via x402 at GET https://tools.nythosx.com/v1/read.

x402paid

Examples it gives

GET https://tools.nythosx.com/v1/read?url=https%3A%2F%2Fexample.com&links=false

Check if a URL is reachable before paying to read it

HEAD request following up to five redirects: status code, final URL, content-type, content-length and last-modified — no page body fetched or charged for content. Use before read_url_as_markdown ($0.003) to confirm a URL resolves and is HTML before paying the bigger fee for extraction. Doesn't check robots.txt (that's enforced on the actual read). Some servers reject HEAD (405/403) even though GET works, so a non-2xx here doesn't guarantee read_url_as_markdown will also fail. Paid: $0.001 USDC via x402 at GET https://tools.nythosx.com/v1/read/status.

x402paid

Examples it gives

GET https://tools.nythosx.com/v1/read/status?url=https%3A%2F%2Fexample.com

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider: NythosX — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 1.0.0
Card completeness: a2a.proto v1.0 requires eight top-level fields. This card omits:
supportedInterfaces

Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.

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Capabilities: pushNotifications streaming
Agent card: https://tools.nythosx.com/.well-known/agent-card.json

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