Census housing-stock context for an area. Perfect for: 'housing stock for an area', 'how old are the homes / median year built', 'owner vs renter share', 'housing units and vacancy for a place'. Returns cited ACS housing-stock characteristics (units, age, tenure, vacancy) for the resolved county/area. National. Area-level context, not a parcel record. Charge-free when the housing-stock lookup fails.

Crypto Fear & Greed index — the current market-sentiment score (0-100) and its label (Extreme Fear … Extreme Greed), as a clean snake_case envelope.

News attention & tone timeline by GDELT — coverage-volume and average-tone time series for any query, merged from GDELT's two timeline feeds into one series.

Crypto perpetual-futures funding-rate scanner — the top funding rates ranked across ~100 Binance perp markets (rate, 8h %, who-pays-who direction, mark price, next funding time). Spot funding arbitrage and crowded positioning in one call.

Qualified Opportunity Zone status for an address. Perfect for: 'is this address in an Opportunity Zone', 'is this property in a QOZ', 'Opportunity Zone for an address', 'is this parcel in a qualified opportunity zone', 'OZ tract lookup'. Returns the QOZ designation at a US point: designated true/false, designation status, census tract GEOID, state, and a rural flag. National, no key. A 'not designated' result is the real covered answer. Charge-free only when the lookup fails.

USDA soil suitability at an address. Perfect for: 'soil type for a property', 'is the soil good for a septic system / foundation / drainage', 'USDA SSURGO soil at an address', 'soil context for a parcel'. Returns dominant soil component suitability ratings (septic, foundation, drainage) at the point via USDA Soil Data Access, with caveats. National. Not an engineering or perc-test determination. Charge-free when soil is out of coverage or the source is unavailable.

Legislative districts for an address. Perfect for: 'what congressional district is this address in', 'state legislative districts for a location', 'who represents this address', 'voting districts lookup'. Returns US congressional, state senate, and state house districts from Census TIGERweb. National. Not local districts (county/municipal wards/school boards). Charge-free when geocoding fails or TIGERweb errors.

EPA cleanup + Superfund/NPL sites near an address. Perfect for: 'Superfund sites near a property', 'EPA cleanup sites nearby', 'NPL sites near an address', 'brownfields near a parcel', 'contaminated site lookup'. Returns EPA Cleanups in My Community + Superfund/NPL records near a point with program/status fields and EPA profile links; brownfields carry a candidate flag. National by lat/lng or address. Awareness only. Charge-free when the lookup fails.

FEMA disaster history for an area. Perfect for: 'FEMA disaster declarations for a county', 'disaster history for an address', 'flood / hurricane / wildfire declarations near a place', 'NFIP claims history'. Returns cited FEMA disaster declarations plus NFIP flood-insurance claim history for the resolved county. National. Historical record context, not a forecast or a risk score. Charge-free when the FEMA lookup fails.

Supported perpetual-futures trading pairs — the list of symbols (BTCUSDT, ETHUSDT, …) the funding-rate scanner and signals cover, as a clean snake_case envelope.

Nearby places of interest for an address. Perfect for: 'what is near this address', 'nearby schools / parks / grocery / transit', 'points of interest around a property', 'amenities near an address'. Returns categorized nearby features from OpenStreetMap with distance and direction from the point. National. Not a walkability score or a quality rating. Charge-free when nothing maps near the address.

EPA radon zone for an address or county. Perfect for: 'radon zone for an address', 'EPA radon potential for a county', 'is this a high radon area', 'radon zone 1 2 or 3 lookup'. Returns the EPA Map of Radon Zones county designation (1/2/3) for a point or explicit state+county, with a Zone 1 high-potential watch item and provenance. National. County-potential context only -- not a measured indoor radon reading. Charge-free when geocoding fails or the county is not matched.

County unemployment rate for an address. Perfect for: 'unemployment rate for an area', 'county jobless rate', 'BLS unemployment stats for an address', 'local labor market data'. Returns recent BLS Local Area Unemployment Statistics (county-level, not seasonally adjusted) with a 6-month trend for the resolved county. National. A reported statistic only - not an economy verdict. Charge-free when the address fails to resolve or the BLS fetch fails.

Delete a human profile from the vault. Near-free pricing maintains consistent x402 payment flow for wallet identification.

Independent proof-of-execution notary: send a payload, get back a signed {hash, timestamp, signature, keyId} receipt provable against the public key at /pubkey.

Per-block base-fee + blob-fee history export — the top-requested feed on the Seneschal data board. Up to 1024 blocks per call (?blocks=, default 300) straight from consensus via eth_feeHistory, as CSV or JSON lines (?format=csv|jsonl). Columns: block, base fee (wei + gwei), gas_used_ratio, blob base fee, blob_gas_used_ratio. Page backwards with ?newest=<block>; headers carry the consensus next-block projection. Live "gas right now" fact: GET /v1/q/base-fee ($0.001).

Puzzle / bounty contract risk feed: the annotated watchlist of puzzle/CTF/bounty contracts classified as locked_no_payout (funded but value can never leave — solving pays nothing), frontrun_bait (pays msg.sender on a calldata condition — broadcast the solution and you WILL be front-run; submit privately), owner_only_payout, claimable, indeterminate or unfunded. Each entry ships payout-path evidence, front-run verdict and ETH at stake. Filters: ?classification=&funded_only=1&limit=.

Email authentication posture check: parses SPF, DMARC and DKIM plus MX for any domain and grades deliverability/anti-spoofing gaps (SPF +all, SPF >10 lookups, DMARC p=none, missing DKIM). Clean JSON for deliverability and security-ops automation.

EPA public water systems for an address, place, point, or state+county. Returns active SDWIS systems with type, population served, and ECHO violation links. National, no key; explicit state+county remains supported. Zero systems can be the real EPA answer. Charge-free when the lookup fails.

Single-fact: what does Ethereum mainnet gas cost RIGHT NOW? Returns the latest block’s base fee + blob base fee AND the consensus-computed next-block projection (not a guess — the protocol’s own EIP-1559/4844 arithmetic), straight from eth_feeHistory. Fields: {block, base_fee_gwei, blob_base_fee_gwei, gas_used_ratio, next_base_fee_gwei, next_blob_base_fee_gwei}. Bulk per-block history: /v1/premium/fee-history.csv ($0.05, up to 1024 blocks/call).