Every agent-payable API.

Hot multifamily real estate deals: listings clearing an 8.5%+ advertised cap rate with computed DSCR — the top tier of the multifamily deals feed. Every field typed; if nothing currently clears the bar the call returns free — you never pay for a blank.

Returns comprehensive hourly precipitation data for the given time range and location(s). Each hour includes precipitation amount, type (rain/snow/mixed), probability (for forecasts), and data source. Seamlessly combines historical observations with forecast data depending on the requested time range. | ERROR: Unable to calculate price.

Hourly near-surface air temperature in Celsius (°C) | ERROR: Unable to calculate price.

Hourly relative humidity as a percentage (0-100%) | ERROR: Unable to calculate price.

Hourly specific humidity (kg/kg) | ERROR: Unable to calculate price.

Hourly wind direction in compass degrees (0-360) | ERROR: Unable to calculate price.

Hourly wind gust speed in meters per second (m/s) | ERROR: Unable to calculate price.

How long a WETH leadership call actually holds — same contract as the USDC persistence route. Where the lead has not changed in the observed window, the duration is reported as a floor with a censoring flag, never as a median. Observed history with sample sizes, never a forecast. Verified per-asset accuracy is free at /accuracy.json; raw on-chain attestations at /track-record.

How often keywords are asked inside AI assistants (ChatGPT, Perplexity & co) — AI search volume with 12-month history, up to 1000 keywords

2026 HSA or health-FSA contribution limit and income-tax savings — HSA self/family limits + age-55 catch-up + HDHP deductible/OOP bounds, or the FSA salary-reduction limit + carryover.

Html Canonical Link Check: Html Canonical Link Check compares document and canonical URLs after deterministic normalization from bounded caller-supplied values without an external provider. Call Html Canonical Link Check before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Html Canonical Link Check as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base.…

Html Meta Refresh Parse: Html Meta Refresh Parse parses bounded meta-refresh delay and target URL from bounded caller-supplied values without an external provider. Call Html Meta Refresh Parse before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Html Meta Refresh Parse as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memor…

Human-readable analyst brief: BLUF, key judgments, and ICD-203 confidence assessment for a threat actor (optionally scoped to a sector). Same fan-out data as /ot/report (actor, campaign, malware, advisory) but DeepSeek-synthesised into a short decision-ready brief instead of a full report. Pass actor (required), sector (optional).

Human verification for AI agents — proof of humanity, sybil resistance, and 'is this wallet a real person' answers in one paid call. Returns two ZK-style outputs about any EVM wallet: (1) total humanity score 0-255 (15 = baseline reCAPTCHA, 45 = + Google OAuth, 70 = + Apple ID, 105 = + 2FA, 255 = full stack), with optional `min_score=N` for a yes/no `passes` verdict; (2) per-method verification check via `check=telegram,apple,g2fa,...` — buyer must NAME the methods to ask about, we never enumerate the full set. Backed by 141,871 Twin Matrix Soulbound Tokens on BNB Chain plus the canonical humanity registry off-chain. The underlying verification list never leaves Twin3 — only verdicts.

Human-readable byte sizes. Call when presenting file sizes, cache usage, or download progress to users. Returns a human string like 1.5 KB from a byte count. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

[3-LEG] Hurricane chain, one basin (?entity=atlantic|epacific|cpacific): leading NHC official 2-day and 7-day genesis probability, QUOTED from NHC, never our forecast -> current active storms - category, wind, pressure, position -> realized official watches, warnings, landfall (confirmation gate). A sequential chain, not one reading - confidence = how many legs are lit, in order. Sources: NOAA NHC. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed.

Paid machine-readable Hydrothermal Ecosystems registry connecting hydrothermal systems, water circulation, mineral-rich waters, microbial communities, extremophile ecosystems, mineral deposition, ecosystem succession, and Earth systems relationships.

Paid compressed relationship map connecting hydrothermal vents, black smokers, white smokers, giant tube worms, vent mussels, vent crabs, chemosynthetic food webs, origins of life, astrobiology, Europa, and Enceladus analogs.

Hyperliquid funding rate extremes: live perpetual funding APR outliers and which side collects. Use for funding-rate and carry trade signals.

IANA timezone lookup for agents: offset, abbreviation, DST and local time for $0.002 USDC—stdlib zoneinfo, no API key. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

ISO 13616 mod-97 IBAN validation with per-country length rules, plus SWIFT/BIC structure validation and country/bank-code extraction.

Resolve a BIC/SWIFT code (8 or 11 chars) into the underlying bank: name, country, city, LEI, and registered head-office address (where available). Use only when you already have the BIC — for IBAN inputs, prefer /v1/iban/validate which resolves the BIC for you. Production · server processing <5ms (network excluded — measure your own round trip on GET /ping) · 121,000+ BICs (39,000+ LEI-enriched via GLEIF, refreshed monthly) · v1.4.3.

Resolve a Swiss BC-Nummer / IID (1-5 digits) into institution name, type, address, BIC, the full payment-rail participation (SIC, RTGS CHF, Instant Payments CHF, euroSIC, LSV+/BDD) and the QR-IID allocation. Backed by 1,100+ SIX BankMaster entries (refreshed monthly) — the canonical Swiss banking source. Production · server processing <5ms (network excluded — measure your own round trip on GET /ping) · 1,100+ SIX BankMaster entries, refreshed monthly · v1.4.3.

Validate up to 100 IBANs in one call at $0.002 per IBAN (2.5x cheaper per IBAN than single calls at $0.005, and one settlement instead of N). Use for CSV cleanup, customer DB dedup, or pre-flight payout list triage. Production · server processing <5ms (network excluded — measure your own round trip on GET /ping) for a 100-IBAN batch · 121,000+ BICs · v1.4.3.

Validate a European IBAN and enrich it with bank, compliance and routing data. Use whenever the user mentions an IBAN, a bank account, a SEPA payment or asks who the bank is. Returns: valid, country, BIC/SWIFT, bank name, EMI/vIBAN flag, SEPA + VoP reachability, risk score, Swiss bc_nummer for CH/LI. Production · server processing <5ms (network excluded — measure your own round trip on GET /ping) · 121,000+ BICs (39,000+ LEI via GLEIF) + 1,100+ SIX · v1.4.3.

Pre-flight compliance triage on an IBAN before a SEPA / cross-border payment: sanctions screening (OFAC), FATF jurisdiction flag, SEPA Instant reachability, VoP (EU 2024/886) participant. Returns risk_score 0-100. Informational, not a regulated AML/CFT product. Production · server processing <5ms (network excluded — measure your own round trip on GET /ping) · OFAC + FATF + SEPA + VoP · weekly refresh · v1.4.3.

ICP fit score and recommendation for a company profile

CIDR math for IPv4/IPv6: network, broadcast, netmask, wildcard, prefix, usable host range and count, mask<->prefix, plus optional contains check and subnet split.

Classify an IPv4/IPv6 address: version, public/private/loopback/link-local flags, integer and hex forms, reverse-DNS pointer, and optional CIDR membership test.

Country, city, region, ISP/org, and lat/lon for an IPv4/IPv6 address (ipwho.is, keyless).

IP geolocation API - country, region, city, postcode, coordinates, timezone and network for any public IPv4 or IPv6 address, plus the field that decides whether to believe any of it. Datacentre, VPN, proxy and Tor detection is returned first, and when the upstream does not supply it the answer says unknown rather than clean - a missing signal is never reported as a negative one. ASN, org, ISP and domain are included so a hosting provider stays visible.

IP geolocation, ASN, and proxy/VPN detection. Pass ?ip=x.x.x.x or omit for caller IP.

Get geolocation and security intelligence for an IP address including VPN, proxy, Tor, and abuse detection.

IP geolocation — IP address → location, ASN, ISP.

Full EDGAR offering timeline for one issuer — registration, amendments, EFFECT, 8-A12B and 424(b) with parsed terms

IPO registration withdrawals (Form RW) with time-in-registration — the market risk-sentiment tape

Recently priced IPOs with parsed 424(b) terms — price per share, share counts, gross proceeds, exchange and ticker, each with source evidence

Imminent IPO listings inferred from SEC EFFECT notices and 8-A12B exchange registrations — strongest signals first

US IPO pipeline — companies currently in registration (S-1/F-1), filterable by stage, recency, SIC and domestic/foreign

Lookup the requester IP as seen by IPstack. Useful for quick agent self-location checks, request debugging and coarse geofencing.

Lookup a specific IPv4 or IPv6 address. Append the IP to the path, for example /134.201.250.155. Use fields to limit the response to only the metadata an agent needs.

ISBN-10/ISBN-13 checksum validation for $0.001 USDC. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

Convert a date to its ISO 8601 week-date (year, week number, weekday), ordinal day-of-year, quarter, and days remaining in the year.

ISO week number. Call for weekly reporting buckets and standup cadence keys. Returns ISO week number (and year context) for a date. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

IXS Real world asset vaults — 6% yields, BlackRock exposure, tokenized on-chain

Validate an IBAN offline against the ISO 13616 registry: country and length check, ISO 7064 MOD-97-10 checksum, BBAN extraction, durable audit receipt.

Validate an IBAN and check whether a bank account number is valid. Verifies the ISO 13616 MOD-97 checksum, structure and country length against the IBAN registry, and returns validity, the country, the BBAN and a formatted IBAN. Instant, deterministic bank account number validation and verification for any European or international IBAN.

Validate an IBAN and retrieve associated bank details, country, and check digits.

ICD-10-CM search — Search ICD-10-CM diagnosis codes by term or code.

Broad person lookup returning up to 20 candidate matches with confidence scores. Useful when you have partial info and want multiple possible matches.