# Agent Bits Machine-readable utilities and datasets for AI agents. https://agentbits.dev ## Capabilities ──────────────────────────────────────── base64_decode Decode a Base64 string into UTF-8 text and report invalid payloads as errors when recovering embedded credentials, tokens, or transport-encoded content. Free HTTP · MCP Docs: https://agentbits.dev/tools/base64-decode base64_encode Convert a UTF-8 string into standard Base64 when you need a portable text encoding for credentials, binary-safe transport, or embedding data in JSON/HTTP fields. Free HTTP · MCP Docs: https://agentbits.dev/tools/base64-encode countries_bulk Download the complete versioned countries dataset as JSON for caching, offline use, or multi-country analysis when a single country_lookup call is not enough. $0.001 USDC HTTP · MCP · x402 Docs: https://agentbits.dev/tools/countries-bulk country_lookup Resolve an ISO 3166-1 alpha-2 country code (for example CA, US, JP) to official name, region, currency, calling code, languages, and related country metadata when you already have the two-letter code. Free HTTP · MCP Docs: https://agentbits.dev/tools/country-lookup currency_lookup Resolve an ISO 4217 currency code such as USD, EUR, or JPY to its name, symbol, decimal places, and which countries use it when you need currency metadata rather than a live exchange rate. Free HTTP · MCP Docs: https://agentbits.dev/tools/currency-lookup http_status_lookup Explain what a numeric HTTP status code such as 404 or 429 means by returning its standard reason phrase and a short description for debugging or API responses. Free HTTP · MCP Docs: https://agentbits.dev/tools/http-status-lookup isbn_validate Verify whether an ISBN-10 or ISBN-13 passes checksum rules and return normalized digits when checking book identifiers before catalog or purchase flows. Free HTTP · MCP Docs: https://agentbits.dev/tools/isbn-validate json_validate Parse a string as JSON to confirm it is well-formed and return a normalized representation when possible before further processing or storage. Free HTTP · MCP Docs: https://agentbits.dev/tools/json-validate language_lookup Resolve an ISO 639-1 language code such as en, fr, or ja to its English name and native name when you need language metadata from a two-letter code. Free HTTP · MCP Docs: https://agentbits.dev/tools/language-lookup luhn_validate Run the Luhn checksum on a numeric string such as a payment-card-like identifier to verify the check digit before accepting or storing the value. Free HTTP · MCP Docs: https://agentbits.dev/tools/luhn-validate mime_lookup Map a file extension such as webp or png, or a MIME type string, to curated Content-Type metadata when setting headers, validating uploads, or choosing a media type. Free HTTP · MCP Docs: https://agentbits.dev/tools/mime-lookup timestamp_convert Convert Unix epoch seconds or milliseconds to ISO-8601, or an ISO-8601 datetime to Unix epoch values, when bridging APIs that disagree on time formats. Free HTTP · MCP Docs: https://agentbits.dev/tools/timestamp-convert timezone_convert Convert an ISO-8601 datetime from one IANA timezone to another while preserving the same instant, including daylight-saving-aware wall times such as Toronto to Tokyo. Free HTTP · MCP Docs: https://agentbits.dev/tools/timezone-convert tld_lookup Identify what a DNS top-level domain such as com, io, or ai is classified as and commonly used for when classifying domains or answering TLD questions. Free HTTP · MCP Docs: https://agentbits.dev/tools/tld-lookup unit_convert Convert a numeric value between supported length, mass, or temperature units—for example miles to kilometers or Celsius to Fahrenheit—when you need a deterministic unit conversion. Free HTTP · MCP Docs: https://agentbits.dev/tools/unit-convert url_decode Decode a percent-encoded URL component into plain text when reading query parameters, path segments, or form values that contain escaped characters. Free HTTP · MCP Docs: https://agentbits.dev/tools/url-decode url_encode Apply encodeURIComponent-style percent-encoding so query parameters, path segments, or form values are safe to place in a URL. Free HTTP · MCP Docs: https://agentbits.dev/tools/url-encode uuid_validate Check whether a string is a well-formed UUID and, when recognizable, report its version and variant so you can accept or reject identifier inputs confidently. Free HTTP · MCP Docs: https://agentbits.dev/tools/uuid-validate ## For agents ─────────── Catalog: https://agentbits.dev/catalog.json MCP: https://agentbits.dev/mcp OpenAPI: https://agentbits.dev/openapi.json Documentation: https://agentbits.dev/docs/ Agent guide: https://agentbits.dev/for-agents Official MCP registry: https://agentbits.dev/server.json llms.txt: https://agentbits.dev/llms.txt ## Payments Paid capabilities use x402 on Base with USDC. No account. No API key. No signup. Agents can pay programmatically. GitHub: https://github.com/rwaldman/agentbits