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Parse any CSS color (hex, rgb(), hsl()) and emit all three formats plus relative luminance. Compute WCAG contrast ratios against a background with AA/AAA pass-fail for normal and large text, and lighten, darken, or mix colors. Built for agents generating accessible UI themes. POST a JSON body like: {"color":"#3498db","background":"#ffffff"}

Validate and parse phone numbers in international E.164 form: extract the country calling code and region, the national number, and the canonical +E.164 string. Single number or a batch of up to 50. Format validation, not a line-in-service check. POST a JSON body like: {"phone":"+14155552671"}

Validate a JSON value against a JSON Schema and coerce common LLM-output mistakes (numbers as strings, stringified booleans, scalars where arrays are expected, missing defaults, extra properties). Returns the coerced value plus a structured error report. Built for cleaning up LLM tool-call arguments and structured outputs. POST a JSON body like: {"schema":{"type":"object","required":["name","age"],"properties":{"name":{"type":"string"},"age":{"type":"integer"}}},"data":{"name":"Ada","age":"36"}}

IPv4 and IPv6 address inspection and subnet math. Inspect an address (version, normalized form, classification: private/loopback/link-local/multicast/global, integer), compute a CIDR block (network, netmask, broadcast, host range, counts), or test whether an address falls inside a range. Deterministic, no lookups. POST a JSON body like: {"cidr":"192.168.1.0/24"}

Generate cryptographic secrets with CSPRNG randomness and honest entropy accounting: random bytes (hex/base64/base64url), passwords with character-class guarantees, pronounceable strings, UUIDs, prefixed API keys, TOTP seeds (base32), and asymmetric keypairs (Ed25519, ECDSA P-256, RSA-2048) as PEM + JWK. Unbiased rejection sampling. Secrets are never stored or logged. POST a JSON body like: {"type":"password","length":24,"symbols":true,"count":2}

Exact computation LLMs cannot do reliably: evaluate arithmetic expressions (trig, logs, powers, factorials, constants), convert between 80+ units across 11 dimensions (length, mass, temperature, data, speed, energy, pressure...), and compute descriptive statistics (mean, median, stdev, percentiles) over up to 100k numbers. Deterministic, no hallucinated arithmetic.

Validate International Bank Account Numbers: ISO 13616 country/length check plus the ISO 7064 mod-97 checksum. Returns the country, check digits, and the BBAN. Single IBAN or a batch of up to 50. Validates structure and checksum, not that the account is open. POST a JSON body like: {"iban":"DE89 3704 0044 0532 0130 00"}

Compute cryptographic digests and HMACs deterministically: MD5, SHA-1, SHA-256, SHA-384, SHA-512, output as hex, base64, or base64url. Add a "key" for HMAC. Built for checksums, content addressing, and signature verification. Inputs are hashed and discarded. POST a JSON body like: {"text":"hello world","algorithm":"sha256","encoding":"hex"}

Encode and decode text across base64, base64url, hex, URL-encoding, and HTML entities (UTF-8 safe). Also decodes (does not verify) JWTs into header and payload with human-readable exp/iat times. Built for wrangling tokens, data URIs, and escaped strings. POST a JSON body like: {"text":"hello world","codec":"base64","operation":"encode"}

Repair malformed JSON text into valid parsed JSON: markdown code fences, single quotes, smart quotes, unquoted keys, trailing commas, comments, Python literals (True/None), raw newlines in strings, and truncated output (auto-closes strings, arrays and objects). Returns the parsed value plus a log of every repair applied. Built for LLM output that almost parses. POST a JSON body like: {"text":"```json\n{name: 'Ada', age: 36, tags: ['x',], active: True"}

Lee 2012 EHMRG 7-day ED model (Table 3 integer score): 2*age + 60 if EMS transport - min(SBP,160) + clamp(HR,80-120) - 2*min(SpO2,92) + 20*creatinine_mg_dl + K (<=3.9: +5; 4.0-4.5: 0; >=4.6: +30) + 60 if troponin>ULN + 45 if active cancer + 60 if home metolazone + 12. Groups 1/2/3/4/5a/5b. Dialysis-dependent excluded. Not EHMRG30-ST, not ADHERE CART, not a discharge or admission order.

LACE (van Walraven 2010 CMAJ Table 3) from length of stay in days (<1 0; 1 1; 2 2; 3 3; 4-6 4; 7-13 5; >=14 7), acute (emergent) admission (true 3), caller-supplied Charlson comorbidity index (0-3 identity; >=4 5), and ED visits in the previous 6 months (0-3 identity; >=4 4). Score 0-19 only; no unpublished high-risk class. Not a discharge order. magent does not compute Charlson.

timestamp-oracle: Fresh Unix timestamp (seconds since epoch) as signed integer JSON.

Add-on, precipitation for one location: daily rainfall plus 30-day accumulated wet-dry drought context from ERA5. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. Every record carries an offline-recomputable record_hash.

ICS malware encyclopedia. Pass ?name=PIPEDREAM. Returns capabilities, targeted OT protocols, attributed actor, affected vendors, detection signatures, and MITRE ATT&CK ICS techniques. Covers PIPEDREAM, TRITON, INDUSTROYER2, CRASHOVERRIDE, FROSTYLOOP, BLACKENERGY.

Norwegian company legal events from the official Enhetsregisteret (Brreg, NLOD 2.0) for insolvency and credit risk monitoring: bankruptcy (konkurs, with the registered date), voluntary or compulsory liquidation, and strike-off, plus current flags checked live. 9-digit organisasjonsnummer. A live-verified company with no flag gets an explicit positive answer. Coarser than France's BODACC: no ruling text, no court; undated events carry an upper-bound date. Legal persons only, never individuals.

Generates JSON schema definitions from provided data structures or specifications.

Curated shelf: Sexuality & Erotica — 9 public-domain books including The Romance of Lust: A classic Victorian erotic novel, The Kama Sutra of Vatsyayana Translated From the Sanscrit in Seven Parts With Preface, Introduction and Concluding Remarks, Memoirs of Fanny Hill A New and Genuine Edition from the Original Text (London, 1749). Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

three.ws Skill Marketplace — list active skill listings with pricing across all three.ws agents. Optionally filter by skill name to find the cheapest provider for a specific capability (e.g. inspect_model, render_avatar). Returns price atomics, chain, currency, trial offer, and time-pass terms when set by the agent owner. Use to route paid work to the cheapest agent.

Curated reading list on American wit and humor for tutoring agents, quiz generators, and reading apps — 133 public-domain books (e.g. Comic History of the United States, Jokes For All Occasions Selected and Edited by One of America's Foremost Public Speakers, Fables in Slang). Full-text retrieval with drill-down routes for chapters, quotes, and citations. No license, no API key required.

Batch KYB and bulk company lookup: full Know Your Business files for 2 to 100 French companies in one call (comma-separated sirens parameter) — bulk due diligence, compliance and onboarding screening of a whole portfolio, each file with per-block provenance (official register + as-of date). Billed per company at $0.105 (30% off the $0.15 unit price); the amount is quoted from the number of SIREN. A SIREN with no diffusible company is returned as trouve=false and billed as one lookup.

Jade Plant (Prosperity) — Meditation on slow growth and fortune for long-term value accumulation.

Company comparison: compare 2 to 5 French companies side by side in one call on official company data — identity, deterministic default-risk score, latest filed accounts (statutory scope) and BODACC insolvency alerts. Benchmarking for supplier selection and vendor shortlist: per-axis rankings, never an overall winner, plus a comparabilite block that flags NOT comparable companies (different sectors, sizes, a holding in the batch). Billed PER COMPANY: signed quote = $0.12 x number of SIREN.

Kerne's hourly EOA-signed proof-of-reserves attestation for kUSD: PSM backing ratio, aggregate USD solvency, delta, all cryptographically bound to an EIP-191 signature you can verify yourself. Same signed blob served free to humans; metered here for agents.