Agent Margin Router
https://agent-margin-router-production.up.railway.app/mcp ↗
Description
18 x402 pay-per-call tools for AI agents (USDC/USDT, Base): web, crypto, DeFi, FX, geo-IP, RSS, ENS
What our measurements say
Agent Margin Router is a remote MCP server published at agent-margin-router-production.up.railway.app. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 1,669 ms, a delay an agent will notice. It exposes a broad tool surface of 18 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names are generally descriptive and indicate their primary function.
- Descriptions include use cases (e.g., 'live gas fees', 'DeFi pool yields') and payment methods.
Weaknesses
- Some parameters (e.g., 'schema', 'x_payment') lack clear explanations or constraints.
- Tool overlap exists (e.g., 'web_search' vs. 'seo_check' for web content).
extract_clean— Parameter 'schema' is optional but lacks definition of expected format.market_spread— Parameter 'size_usd' is optional but unclear how it affects output.gas_fees— 'chain' is optional but no default value is specified.payment_info— No error handling described for invalid 'tool' inputs.
Verdict
Event narrative
Sign up free to generateRaw observations
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 126ms → warm 127ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
extract_cleanStructured JSON extraction from any public URL (HTML, PDF, JS-rendered pages). Multi-provider routing with license-aware caching. Pay per call with USDC or USDT on Base via x402 – no API key, no signup. 3 free calls per wallet.
urlstringrequiredschemaobjectinstructionsstringwalletstringapi_keystringx_paymentstring
market_spreadLive cross-exchange crypto spread with slippage-adjusted net edge for a given trade size. Covers major CEX venues. Pay per call with USDC or USDT on Base via x402 – no API key, no signup. 3 free calls per wallet.
assetstringrequiredbuy_venuestringrequiredsell_venuestringrequiredsize_usdnumberquotestringmax_age_secondsintegerwalletstringapi_keystringx_paymentstring
gas_feesLive EIP-1559 gas fees (slow/standard/fast tiers) plus USD cost per transaction type (transfer, ERC-20 transfer, swap, NFT mint) for Base, Ethereum, Arbitrum, Optimism and Polygon. Aggregated from public RPC nodes – no API key. Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
chainstringmax_age_secondsintegerwalletstringapi_keystringx_paymentstring
token_priceMulti-venue median spot price for any major crypto asset (Binance, Coinbase, Kraken, CoinGecko) with min/max, deviation and confidence score – one call instead of four. No API key. Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
assetstringrequiredquotestringvenuesarraymax_age_secondsintegerwalletstringapi_keystringx_paymentstring
wallet_balanceNative + stablecoin balances (ETH, USDC, USDT, DAI, WETH) of any EVM wallet with USD valuation, read directly from public RPC nodes on Base, Ethereum, Arbitrum, Optimism or Polygon. No API key. Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
addressstringrequiredchainstringtokensarraywalletstringapi_keystringx_paymentstring
web_searchLive web search results (title, URL, domain, snippet) for any query, key-less, region-aware. Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
querystringrequiredmax_resultsintegerregionstringwalletstringapi_keystringx_paymentstring
email_validateValidate an email address: RFC syntax, MX/A records via DNS-over-HTTPS, disposable and free-provider detection, role-account flag, deliverability score and verdict. Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
emailstringrequiredcheck_mxbooleanwalletstringapi_keystringx_paymentstring
dns_whoisDNS records (A, AAAA, MX, NS, TXT, CNAME, SOA, CAA) via DNS-over-HTTPS plus RDAP/WHOIS registration data (registrar, created/expires, status, nameservers, DNSSEC). Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
domainstringrequiredrecord_typesarrayinclude_whoisbooleanwalletstringapi_keystringx_paymentstring
pdf_textExtract clean text (per page + full) and metadata from any public PDF URL up to 25 MB / 200 pages. Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
urlstringrequiredmax_pagesintegerpagesarraywalletstringapi_keystringx_paymentstring
seo_checkOn-page SEO audit of any URL: title, meta description, canonical, headings, images without alt, links, Open Graph, structured data, robots.txt/sitemap, prioritized issues and a 0-100 score with grade. Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
urlstringrequiredcheck_robotsbooleanwalletstringapi_keystringx_paymentstring
defi_yieldsLive DeFi pool yields (APY, TVL, stablecoin flag) across 100+ chains and protocols from DefiLlama. Filter by chain, asset, project, minimum TVL; sorted by APY. Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
chainstringassetstringprojectstringmin_tvl_usdnumberstablecoins_onlybooleanlimitintegerwalletstringapi_keystringx_paymentstring
currency_convertFiat currency conversion with ECB reference rates (30+ currencies): amount, source currency, one or many targets. Returns rates, converted amounts and rate date. Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
amountnumberfromstringrequiredtoarrayrequiredwalletstringapi_keystringx_paymentstring
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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