Rotate pages by 90/180/270°. Body: {"url":"https://…/file.pdf","degrees":90,"pages":"1-3"?}. Omit "pages" to rotate all. Returns the new PDF as base64.

Live currency conversion using European Central Bank reference rates (via Frankfurter). Converts an amount between two currencies and returns the rate and date. ?from=USD&to=EUR&amount=100

Resolve a lat/lon to a structured postal address: road, house number, city, state, postcode, country (with ISO code). OpenStreetMap/Nominatim, no key. ?lat=38.8977&lon=-77.0365.

Decode a barcode or QR code from an image. Send a base64 PNG or JPEG (or a data: URL); returns the decoded text and the symbology. Reads QR, DataMatrix, and 1D barcodes (EAN/UPC/Code39/Code128/ITF/Codabar). Deterministic, no network, no model.

Resolve a free-form address or place name to coordinates: lat/lon, display name, bounding box, place type. OpenStreetMap/Nominatim, no key. ?q=1600+Pennsylvania+Ave+Washington+DC&limit=1.

Read the USDC balance of any address on Base, Polygon, Arbitrum, Optimism, or Ethereum. Read-only on-chain call. ?address=0x…&network=base

Multi-period weather forecast for a US location from api.weather.gov (NWS, public domain). Give latitude and longitude; returns the place plus upcoming forecast periods (temp, wind, conditions). US coverage only. ?lat=40.71&lon=-74.01

Search OpenStreetMap for places by keyword, optionally restricted to a bounding box or country. Returns ranked hits with coordinates and place type — e.g. coffee shops in a city, airports in a region. ?q=coffee&viewbox=-122.52,37.81,-122.35,37.70&bounded=1.

Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON — what an agent needs to decide whether/how to pay. Read-only; does not pay. ?url=https://api.example.com/paid&method=GET

Fetch and validate a domain's DMARC policy at _dmarc.<domain> (RFC 7489). Surfaces the enforcement policy (none/quarantine/reject), reporting addresses, alignment modes, and common misconfigs (no rua, p=none stuck for months, percent <100). Pair with SPF and DKIM for full Feb-2024 sender-rule compliance.

Look up the Autonomous System (ASN), prefix, country, registry, and allocation date for an IPv4 address — or for a hostname (which is resolved first). Uses Team Cymru's free DNS-based IP→ASN mapping; no HTTPS upstream, no auth, no rate-limit headaches.

Fetch and validate a domain's SPF record (RFC 7208). Parses mechanisms (ip4/ip6/include/a/mx/all), counts DNS lookups against the famous 10-lookup limit, and flags the qualifier on `all` (-/fail, ~/softfail, ?/neutral). The first stop when an email is hitting the spam folder.

Historical foreign-exchange rate for a specific date using European Central Bank reference rates (via Frankfurter). Returns the rate that was published on (or rolled forward to) the requested date. ?from=USD&to=EUR&date=2024-01-02

Fetch and parse a DKIM public-key record at <selector>._domainkey.<domain> (RFC 6376). Returns the parsed key params (algorithm, length, flags) so you can verify rotation status or key strength. Caller must know the selector — use email-deliverability if you don't.

Parse an IPv4 CIDR block: network address, broadcast, first/last host, netmask, and host count. Optionally test if an IP is inside it.

Flesch Reading Ease score and Flesch–Kincaid grade level for English text, plus word/sentence/syllable counts.

Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan).

Convert CSV into a GitHub-flavored Markdown table (first row is the header).

Flatten an OpenAPI 3.x or Swagger 2.x spec into a structured list of callable endpoints — one row per operation with method, path, operationId, summary, tags, parameters (name / in / required / type), JSON-body flag, and documented response codes. Includes per-method and per-tag counts so an agent can pick what to call next without parsing the full spec. Output is sorted by path then method for stable, agent-friendly grouping. Pure CPU — deterministic, no network, no $ref dereferencing.

Mask emails, phone numbers, credit-card-like numbers, IPs, and SSNs in text. Returns the redacted text and counts by type.