x402 Toolbox

Install

Pick the AI app you use, then copy the settings.

Passed 3/3 checks · What you ask goes through the maker’s server (x402-toolbox.swiftbotlab.workers.dev) · ✓ Commands checked Nov 13, 2026

claude mcp add --transport http --scope user x402-toolbox https://x402-toolbox.swiftbotlab.workers.dev/mcp

{
  "mcpServers": {
    "x402-toolbox": {
      "url": "https://x402-toolbox.swiftbotlab.workers.dev/mcp"
    }
  }
}

{
  "servers": {
    "x402-toolbox": {
      "type": "http",
      "url": "https://x402-toolbox.swiftbotlab.workers.dev/mcp"
    }
  }
}

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Connect over the internet in

ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast

All apps, with pros and cons →

What it can do

Tool names and descriptions exactly as the server reported them on Nov 12, 2026. The maker wrote them, not us; we show them as plain text.

• dns_lookup

  DNS lookup for any record type over DNS-over-HTTPS. Resolve A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, SRV, PTR, DS, DNSKEY, HTTPS, SVCB, TLSA or NAPTR records for a name. Returns answers with TTLs, the DNS status and whether DNSSEC validated. TXT strings are joined. Price: $0.005 US

• dns_mx

  Mail servers (MX) of a domain, sorted, with the mail provider. MX records sorted by priority, null-MX detection (RFC 7505), the implicit-MX fallback (A/AAAA) when no MX exists, and the detected mail provider (Google Workspace, Microsoft 365, Zoho, Proton, ...). Price: $0.005 USDC

• dns_reverse

  Reverse DNS (PTR) for an IPv4 or IPv6 address, with forward confirmation. Looks up the PTR name of an IP address and checks forward-confirmed reverse DNS (FCrDNS): whether the PTR hostname resolves back to the same IP. Price: $0.005 USDC per call via x402 (eip155:8453).

• dns_spf

  SPF record check: full include tree, DNS lookup count, problems. Fetches the SPF record, expands include: and redirect= recursively, counts DNS-querying mechanisms against the RFC 7208 limit of 10, lists ip4/ip6 ranges and flags problems (multiple records, +all, ?all, missing inc

• dns_dmarc

  DMARC record check and parsed policy. Reads _dmarc. (falling back to the organizational domain), parses p, sp, pct, rua, ruf, adkim, aspf and fo, and lists weaknesses (p=none, pct<100, no reporting address, duplicates). Price: $0.005 USDC per call via x402 (eip155:8453).

• email_validate

  E-mail address check: syntax, MX, disposable, role, free provider, typos. Validates an address without sending mail: RFC syntax, normalized IDN domain, MX (or implicit A) records, null-MX, disposable-domain list, role accounts (info@, admin@), free providers and typo suggestions

• email_security

  E-mail security audit of a domain: MX, SPF, DMARC, DKIM, MTA-STS, TLS-RPT, BIMI, grade. One call audits a domain's mail setup: MX + provider, SPF tree and lookup count, DMARC policy, DKIM keys at common selectors, MTA-STS record and policy file, TLS-RPT, BIMI. Returns a 0-100 sco

• domain_rdap

  Domain registration data (RDAP/WHOIS): registrar, created, expires, age, status. Looks up the registry RDAP server for the TLD (IANA bootstrap) and returns the registrar, registration / expiry / last-changed dates, domain age in days, days until expiry, EPP status codes, nameserv

• web_extract

  Fetch a web page and return clean main text and Markdown plus title and metadata. Fetches a public URL (redirects followed and re-checked) and converts the HTML to clean text and Markdown: main/article content first, navigation/footers/scripts removed, links made absolute. Also r

• web_metadata

  Page metadata for link previews and SEO: title, description, OpenGraph, Twitter card, JSON-LD, favicon. Fetches a URL and returns title, meta description, canonical, language, robots, OpenGraph and Twitter-card tags, JSON-LD blocks, favicon, RSS/Atom feeds, hreflang alternates an

• web_links

  All links on a page, absolute, de-duplicated, split into internal and external. Fetches a page and returns every as an absolute URL with its anchor text and rel, de-duplicated, marked internal or external (same registrable host), plus counts of nofollow links, mailto/tel links an

• web_headers

  HTTP status, response headers, redirect chain, timing and a security-header audit. Requests a URL (HEAD or GET) and returns the final status, every redirect hop, response headers, latency and an audit of security headers (HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referr

• web_robots

  Is a URL allowed for a crawler by robots.txt? Rules, crawl-delay and sitemaps. Fetches the site's /robots.txt and evaluates a URL path for a user-agent with RFC 9309 matching (longest match wins, * and $ wildcards). Returns allowed/disallowed, the deciding rule, crawl-delay, decl

• web_sitemap

  Read a sitemap.xml (or a site's default sitemap): URLs with lastmod, child sitemaps. Fetches a sitemap URL, or for a bare site URL tries the sitemaps declared in robots.txt and then /sitemap.xml. Returns page URLs with lastmod/changefreq/priority, or the child sitemaps of a sitem

• html_extract

  Convert HTML you already have to clean text / Markdown and extract its metadata and links. Same engine as web-extract, without fetching: send up to 2 MB of HTML (and an optional base URL for resolving links) and get Markdown and/or plain text, title, description, OpenGraph, headi

• url_parse

  Parse, normalize and clean a URL (components, query params, punycode, tracking params removed). Splits a URL into scheme, host (Unicode and punycode), port, path, query parameters and fragment; returns a normalized form (lowercase host, default port dropped, sorted query) and a c

• evm_address

  Validate an EVM address and return its EIP-55 checksum form. Checks the 0x + 40 hex format, verifies a mixed-case EIP-55 checksum (flags typos), and returns the checksummed and lowercase forms and whether it is the zero address. No network access. Price: $0.003 USDC per call via

• evm_contract

  Is an address a contract or a wallet? Code size, EIP-1967 proxy implementation/admin/beacon, EIP-7702 delegation. Reads the bytecode of an address on a chain: EOA vs contract, code size and hash, EIP-7702 delegated EOAs, minimal-proxy (EIP-1167) targets, EIP-1967 implementation/a

• evm_selector

  Function selector and event topic for a Solidity signature. Normalizes a function/event/error signature (drops parameter names, expands uint to uint256, handles tuples and arrays) and returns the 4-byte selector and the 32-byte event topic. No network access. Price: $0.003 USDC p

• evm_selector_lookup

  Reverse-lookup 4-byte function selectors and 32-byte event topics to signatures. Looks up up to 20 selectors (0x + 8 hex) and event topics (0x + 64 hex) in the public openchain signature database (4byte.directory fallback) and returns candidate signatures, verified-contract ones

• abi_encode

  ABI-encode values (or full calldata for a function signature). Encodes values per the Solidity ABI: all integer sizes (range-checked), address, bool, bytesN, bytes, string, fixed and dynamic arrays and tuples (nested). With a function signature, returns calldata with the selector

• abi_decode

  ABI-decode calldata, return data or log data with known types or a signature. Decodes hex data with a list of ABI types or a function signature (the 4-byte selector is stripped and checked when present). Strict: every offset and length is bounds-checked and dirty padding is rejec

• calldata_decode

  Decode unknown transaction calldata: find the function signature and decode the arguments. Looks up the selector (built-in list, then openchain / 4byte), tries each candidate signature and keeps the first one that decodes and re-encodes to exactly the same bytes, so collisions ar

• evm_tx

  Explain an EVM transaction: status, fee, decoded method, ERC-20/721 transfers. Fetches a transaction and its receipt from a public RPC: from/to, value, status, block and time, gas used, effective gas price and fee in native currency, the decoded method call, and every Transfer ev

• evm_token

  ERC-20 token metadata: name, symbol, decimals, total supply (on-chain). Reads name(), symbol(), decimals() and totalSupply() directly from the token contract on the chosen chain (handles bytes32 names), and formats the supply with the token's decimals. Price: $0.005 USDC per call

• evm_balance

  Native and ERC-20 balances of an address. Native coin balance plus the balance of up to 10 ERC-20 tokens (raw and formatted with decimals and symbol) for an address on the chosen chain, read at the latest block. Price: $0.005 USDC per call via x402 (eip155:8453).

• evm_gas

  Current gas price, base fee and priority fee on an EVM chain. Latest block number, base fee, suggested priority fee and gas price in gwei, plus the cost in native currency of a 21,000-gas transfer and a 65,000-gas ERC-20 transfer at the current price. Price: $0.003 USDC per call

• ens_resolve

  ENS: resolve a name to an address, or an address to its primary name (verified). Give "name" (vitalik.eth) to get its Ethereum address, resolver and namehash; give "address" to get its primary ENS name via reverse resolution, verified by resolving the name forward again. Reads th

• evm_units

  Exact conversion between wei, gwei, ether or any token decimals. Converts an amount between wei / gwei / ether (or any decimals 0-36, e.g. 6 for USDC) with exact integer arithmetic (no floating-point rounding), and refuses conversions that would drop digits. Price: $0.003 USDC pe

• evm_verify_message

  Recover the signer of an EIP-191 personal_sign message and check it against an address. Computes the EIP-191 message hash and recovers the signing address from a 65-byte signature (v = 27/28 or 0/1), optionally comparing it with an expected address. Works for Sign-In-With-Ethereu

• x402_check

  Probe an x402 endpoint: alive? what does it charge, on which chain, to whom? Is its 402 valid?. Calls a paid URL without paying and inspects the 402 challenge: x402 version, every accepted payment option (scheme, network, asset, USDC price in dollars, payTo, timeout), resource de

• x402_search

  Search the x402 Bazaar catalogs for paid APIs by keyword, with prices. Searches the public discovery catalogs of the Coinbase CDP facilitator and the PayAI facilitator, merges and de-duplicates the results and returns each resource URL with its description, method, network and US

• ip_info

  Parse and classify an IPv4/IPv6 address (private, loopback, CGNAT, documentation, ...). Canonical and expanded forms, integer and hex values, version, scope per the IANA special-purpose registries (private, loopback, link-local, CGNAT, multicast, documentation, 6to4, NAT64, IPv4-

• cidr_info

  Subnet calculator for an IPv4/IPv6 CIDR block. Network and broadcast addresses, first/last usable host, netmask and wildcard, number of addresses and usable hosts, address class and scope. Notes when the input had host bits set. Price: $0.003 USDC per call via x402 (eip155:8453).

• cidr_contains

  Which of these IPs fall inside which CIDR ranges (allowlist / blocklist check). Checks up to 1,000 IPs against up to 1,000 CIDR blocks (IPv4 and IPv6) and returns, per IP, every matching range. Invalid entries are reported, not fatal. Price: $0.003 USDC per call via x402 (eip155:

• cidr_split

  Split a CIDR block into smaller subnets. Lists the subnets of a given prefix length inside a parent block (e.g. a /16 into /24s), up to 4,096 per call, with the total count. Price: $0.003 USDC per call via x402 (eip155:8453).

• cidr_aggregate

  Merge / summarize a list of CIDRs into the smallest equivalent set. Collapses overlapping and adjacent IPv4/IPv6 ranges (route summarization), returning the minimal CIDR list that covers exactly the same addresses. Price: $0.003 USDC per call via x402 (eip155:8453).

• ip_range_to_cidr

  Convert an IP range (start - end) to the minimal list of CIDR blocks. Exact conversion of an inclusive address range to CIDR blocks, IPv4 or IPv6, up to 1,000 blocks. Price: $0.003 USDC per call via x402 (eip155:8453).

• json_validate

  Validate JSON data against a JSON Schema (draft 2020-12 / draft-07). Checks data against a schema: types, enum/const, numeric and string limits, patterns, formats (email, date-time, uri, uuid, ipv4/6, hostname), arrays, objects, $ref (same document), allOf/anyOf/oneOf/not, if/the

• json_format

  Parse, pretty-print, minify or canonicalize JSON (sorted keys); locate syntax errors. Parses JSON and returns it pretty-printed (2/4 spaces or tabs), minified, or canonical with sorted keys, plus size, node count and depth. On invalid JSON, reports the error position with line an

• json_query

  Extract values from JSON with a JSON Pointer or a dotted path (a.b[0].c, items[*].id). Reads one value by RFC 6901 JSON Pointer (/a/b/0) or a dotted path with [index] and [*] wildcards. Up to 20 paths per call. Price: $0.003 USDC per call via x402 (eip155:8453).

• json_diff

  Structural diff of two JSON documents as JSON-Patch-style operations. Compares two JSON values key by key and index by index and returns add / remove / replace operations with JSON Pointer paths and old and new values (up to 2,000 operations). Price: $0.003 USDC per call via x402

• csv_to_json

  CSV / TSV to JSON (RFC 4180 quoting, delimiter auto-detect, type inference). Parses CSV with quoted fields, embedded newlines and doubled quotes; auto-detects comma, semicolon, tab or pipe. Returns an array of objects (using the header row) or of arrays, optionally inferring numb

• json_to_csv

  JSON array of objects to CSV (nested objects flattened to dot.keys). Converts an array of objects (or arrays) to CSV with a header row built from the union of keys. Nested objects become dot.separated columns, arrays are JSON-encoded, and cells starting with = + - @ are escaped a

• text_stats

  Text statistics: words, sentences, reading time, readability, top keywords. Counts characters, graphemes, words, sentences, paragraphs and lines; estimates reading and speaking time; computes Flesch reading ease and Flesch-Kincaid grade (English) and the most frequent keywords wi

• text_diff

  Line diff of two texts as a unified diff with added/removed counts. Computes a minimal line-based diff (LCS) between two texts and returns unified-diff hunks with configurable context, plus counts of added and removed lines. Up to 5,000 lines per side. Price: $0.003 USDC per call

• text_transform

  Slugify and case conversion (camel, snake, kebab, title, constant ...), trim, dedupe lines. Transforms text: slug, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, Sentence case, upper, lower, strip accents, collapse whitespace, sort or dedupe lines, remo

• hash

  Hash text or bytes: SHA-1/2/3, Keccak-256, MD5, RIPEMD-160, BLAKE2/3. Computes one or all of md5, sha1, sha224, sha256, sha384, sha512, sha3-256, sha3-512, keccak256, ripemd160, blake2b-256/512, blake2s-256, blake3. Input as UTF-8 text, hex, base64 or base58; output hex or base64

• hmac

  HMAC (SHA-256/384/512/1, MD5), e.g. to check a webhook signature. Computes HMAC of a message with a key (text, hex or base64). Optionally compares against an expected signature in constant time and reports whether it matches. Keys are not stored or logged. Price: $0.003 USDC per

• encode

  Convert between UTF-8, hex, base64, base64url, base32, base58; URL and HTML escaping. Re-encodes data from one encoding to another (utf8, hex, base64, base64url, base32, base58), or applies url-encode / url-decode / html-escape / html-unescape. Reports invalid UTF-8 instead of gu

• uuid

  Generate UUIDs (v4 random, v7 time-ordered) or parse/validate one. With no "uuid" parameter: generates up to 100 UUIDs of version 4 or 7 using a CSPRNG. With "uuid": validates it and returns the canonical form, version, variant and embedded timestamp (v1, v6, v7). Price: $0.003 U

• jwt_decode

  Decode a JWT and check its times; optionally verify an HS256/384/512 signature. Decodes header and payload, converts exp/iat/nbf to ISO dates, reports whether the token is expired or not yet valid, and flags alg=none. If a shared secret is given, verifies HMAC signatures (HS256/3

• random

  Cryptographically secure random bytes, tokens and passwords. Generates random bytes (hex/base64/base64url/base58), passwords with chosen character classes, or numeric PINs, from a CSPRNG. Reports the entropy in bits. Nothing is stored. Price: $0.003 USDC per call via x402 (eip155

• unit_convert

  Convert between units: length, mass, volume, area, speed, time, data, pressure, energy, power, temperature, angle. Exact-factor conversion across 12 dimensions and 140+ units (SI, imperial, US customary, IEC binary data sizes). Temperature handles offsets (C, F, K, R). Pass to=al

• time_convert

  Convert a time between time zones and formats (ISO, unix, RFC 2822), with DST-aware offsets. Parses ISO 8601, unix seconds/ms or "now" (a bare local time is read in the "from" zone) and returns it in UTC and in each target IANA zone with offsets, weekday, ISO week, day of year, u

• time_diff

  Duration between two dates/times, calendar difference and business days. Exact duration (seconds, minutes, hours, days), calendar difference in years/months/days, and the number of weekdays (Mon-Fri) between two dates, evaluated in a chosen time zone. Optionally adds a duration t

• cron_next

  Explain a cron expression and list its next run times in any time zone. Parses a 5-field cron expression (lists, ranges, steps, month/day names, @daily/@hourly/... macros, Vixie day-of-month OR day-of-week rule) and returns the next N run times (up to 50) in UTC and in the given

• color

  Colour conversion (hex, RGB, HSL) and WCAG contrast ratio between two colours. Parses hex, rgb(), hsl() or CSS names and returns hex, RGB, HSL and relative luminance. With a second colour, returns the WCAG 2.x contrast ratio and AA / AAA pass/fail for normal and large text. Price

• currency_convert

  Currency conversion with official ECB euro reference rates (30 fiat currencies). Converts an amount between USD, EUR, GBP, JPY, CHF, CNY, INR, BRL, CAD, AUD and the other currencies the European Central Bank publishes daily (cross rates via EUR). Returns the rate, its date and so

• semver

  Semantic versions: parse, compare, sort, and check against npm-style ranges. Parses SemVer 2.0 versions; compares two (a vs b); sorts a list (invalid ones reported); checks versions against npm range syntax (^, ~, x-ranges, hyphen ranges, comparators, ||) with correct prerelease

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 13, 2026

• ✓ Pass

  Maker matches the repo

  The registry name was verified with the GitHub account swiftbotlab, which owns the repo

• … Not checked yet

  Still maintained

  We have not read this repo from GitHub yet

• … Not checked yet

  Has a licence

  We have not read this repo from GitHub yet

• ✓ Pass

  Endpoint responds

  Responded in 61 ms (HTTP 200)

• – Not applicable

  Sign-in with OAuth

  No sign-in needed

• ✓ Pass

  No hidden instructions in tool descriptions

  Read 60 tool descriptions and found no hidden instructions to the AI

User reviews

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Compared with others in Crypto & blockchaini

• More stars than 0% of the other 1668 servers in this category
• Published to the registry more recently than 76% of the other 1668 servers in this category
• Basic checks equal to or better than 100% of the other 1668 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

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Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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README from the maker

No README found in the repo