Agent402.Tools — pay-per-call web tools MCP Server

[free, no wallet] Base64 encode or decode text. mode: encode (default) or decode. Handles URL-safe base64 on decode. Returns { mode, result }.

[free, no wallet] Convert a datetime from one IANA timezone to another. Accepts ISO 8601, Unix timestamps (seconds or milliseconds), or natural date strings. Returns the converted time in both timezones with UTC offset. ?datetime=2026-06-23T14:00:00&from=America/New_York&to=Asia/Tokyo. Returns { input, from, to, utc }.

[free, no wallet] Convert a value between units of length, mass, temperature, volume, area, speed, time, data, pressure, energy, power, angle, frequency - every unit the retired convert-* endpoints handled (e.g. miles, kilograms, us-gallons, fahrenheit, psi, kilowatt-hours). Returns { result, from, to }.

[free, no wallet] Cryptographic hash of a text string. Algorithms: sha256 (default), sha512, sha1, md5. Returns hex and base64 digests. Returns { algo, hex, base64 }.

[free, no wallet] Generate a QR code PNG from any text or URL. ?text=…&size=256 (128-1024). Returns { contentType, body }.

[free, no wallet] Generate UUIDs. ?version=4 (default, random) or 7 (time-ordered), ?count=1..100. Returns { version, uuids }.

[wallet-required, $0.002/call] All token balances for any address in one call, from Coinbase's indexed data API - ERC-20 + native on EVM, SPL on Solana; no per-token contract calls, no RPC wrangling. Networks: base, ethereum, base-sepolia, solana, solana-devnet. Symbols/decimals populated for whitelisted tokens (USDC always included). Returns { address, network, balances, count }. This hosted connector holds no wallet, so calling it here returns paid-access setup; run it with a funded wallet via npx agent402-mcp or any x402 client.

[wallet-required, $0.002/call] Return the most recent asset transfers (incoming + outgoing) for a wallet address - native coin, ERC-20, ERC-721, ERC-1155 - already merged and sorted newest first. Each row carries the block, tx hash, counterparty, asset, and decimal value. Cap is 100 per direction; widen the window via `fromBlock` if you need deeper history. Returns { address, network, limit, transfers }. This hosted connector holds no wallet, so calling it here returns paid-access setup; run it with a funded wallet via npx agent402-mcp or any x402 client.

[free] What this connector is and how to pay for the tools it fronts: catalog size, the free compute tier and its limits, the payment rails accepted, and the machine-readable discovery URLs. Call this first if you need to know whether a wallet is required.

Run an Agent402 tool by slug (discover slugs with search_tools or find_tool; params must match that tool's inputSchema). The 222 pure-CPU tools execute free on this hosted connector (rate-limited, no wallet - proof-of-work covers them) and return the tool's JSON result. Wallet-only tools (live market data like stock-quote at $0.003, live search, browser rendering, PDFs, durable memory) return a paid-access setup guide instead - this connector holds no wallet. An unknown slug returns an error pointing back to search_tools.

[free, no wallet] Decode a JWT without verification: header, payload, expiry status, and time remaining. (Decoding only - signatures are NOT verified.) Returns { header, payload, expired }.

[free, no wallet] Validate, pretty-print, or minify JSON. Returns parse errors with position when invalid. Returns { valid, formatted }.

[free, no wallet] Parse CSV (quoted fields supported) into a JSON array of objects, using the first row as headers (header=false for arrays). Returns { rows, count }.

How paying for Agent402 tools works and how to manage a wallet. This hosted connector holds NO wallet: 222 pure-CPU tools run free here (or solve a proof-of-work puzzle), the rest - including the /v1 OpenAI-compatible LLM gateway (chat nano $0.003, embeddings $0.002; no API key, wallet = account) - settle in USDC via x402. Covers: the free vs paid split, how to configure a funded wallet + per-call and budget spend caps, the rails (USDC on Base, Solana, Polygon, Arbitrum, Monad, Celo, Avalanche, Sei, Optimism, Stellar, or Algorand - or USDG on Robinhood Chain), and checking a wallet's balance/transaction history via the wallet-balances / wallet-transactions tools. Returns { connector, freeTier, pay, spendControls, balanceAndHistory }.

DECIDE, don't browse: resolve a plain-language task to the single best-matching Agent402 tool, returned call-ready - slug, price, input schema, and a worked example (its counterpart search_tools returns a list of candidates to compare - search explores, find decides). Returns { task, matches } with the top pick first; then run call_tool with the chosen slug + params.

BROWSE the catalog: keyword search over Agent402's 527 pay-per-call web tools, returning a LIST of candidates to compare (its counterpart find_tool resolves a task to ONE ready-to-run pick - search explores, find decides). Categories: live market data (stock-quote at $0.003), encoding, crypto, text, time, math, validation, unit conversions, network, browser, PDF, search, memory. 222 pure-CPU tools run free here (proof-of-work - no wallet needed); the rest need a USDC wallet. There is also an OpenAI-compatible LLM gateway at https://agent402.tools/v1 - flat per-call (chat nano $0.003, auto $0.01, embeddings $0.002), no API key: a funded wallet is the account. Beyond this catalog, Agent402 can ROUTE-AND-EXECUTE against the OPEN x402 ecosystem: POST https://agent402.tools/api/route/execute with { task, include:"external" } resolves a PROVEN external seller (real settled volume), pays it on your behalf, and relays the result (marked untrustedContent) - one call to reach thousands of outside tools, from a $0.01 flat fee. That path is wallet-only, so run it with your own wallet via the HTTP API or the stdio agent402-mcp package's route_and_execute tool (this hosted connector holds no wallet). Returns { results, workflows } - each result has slug, price, access, description, inputSchema; run one with call_tool.

[free] Ranked x402 sellers from the on-chain settlement leaderboard: settled call counts, USDC totals and distinct buyers per seller. Use it to find other services in the open x402 ecosystem. This host's own wallet is excluded unless include is set to all.