Every agent-payable API.

Look up Australian company data from the Australian Business Register (ABR). Accepts an ABN (11 digits). Returns entity name, status, type, GST registration, and address details. Free government API — fast and reliable.

Look up Belgian company data from the KBO/BCE Crossroads Bank for Enterprises via the CBEAPI.be JSON wrapper. Accepts enterprise number (10 digits, e.g. 0404.616.494), VAT-prefixed form (BE0404170701), or fuzzy company name. Returns name, status, juridica…

Look up Canadian company data from Corporations Canada. Accepts corporation number or fuzzy company name.

Look up EU customs duty rates by HS code and origin country. Returns duty rate, preferential rates, anti-dumping status.

Look up HTTP status-code meanings for $0.001 USDC or retrieve the common-code reference.

Look up UK beneficial ownership (UBO / PSC) information for a company. Returns individuals who ultimately own or control the entity, their ownership percentage, and the ownership chain. Uses Companies House Persons of Significant Control. UK-only — non-GB…

Look up UK charities via the Charity Commission API. Search by registration number or name. Returns status, income, activities.

Look up a 20-char Legal Entity Identifier via GLEIF for $0.002 USDC with status and legal name. 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.

Look up a Base transaction by hash (optional receipt) for $0.001 USDC via live JSON-RPC. 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.

Look up a common MIME type from extension/filename for $0.001 USDC.

Look up a static chain id to network name table without live RPC — call when mapping a static chain id to a network name (no tip). Use for chain input hygiene without live RPC—adjacent to OneSource-class small chain reads, but static/local only so rights and margin stay clear. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain tip, web…

Look up known vulnerabilities for a package+version via OSV API. Supports npm, PyPI, Maven, Go, Cargo, NuGet. Returns CVEs with severity and fix versions.

Look up product information by UPC/EAN barcode. Uses Open Food Facts and UPC ItemDB. Returns product name, brand, nutrition, images.

Look up supported blockchain network metadata and chain IDs for $0.001 USDC. Static first-party registry only—no live RPC, balances, blocks, receipts, gas, or contract reads.

Search the federal banking compliance rules database. 56 rules across Reg DD, Reg Z, UDAAP, ECOA, BSA/AML, and more.

Look up a person by name, email, LinkedIn URL, or other identifiers. Returns professional profile and contact information. Consumes 1 export credit.

Look up a person and their associated company data in a single request.

Who is this prescriber, and what do they prescribe most in Medicare Part D? Look up a prescriber by NAME (or exact NPI): NPPES identity — specialty, location — plus that NPI's latest-year Part D summary (top drug, total claims, distinct drugs, and which tracked classes GLP-1/SGLT2/DPP-4/Statin they write). Optionally narrow by state and specialty. Observational public CMS/NPPES records — never a clinical recommendation. Cross-gateway via the Healthparse Part D API.

Lookup country name from a static ISO3166-1 alpha-2 table subset. Call when labeling country codes offline. Returns name and code as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Loopable Bazaar category-heat change feed with added, removed, rank-change and price-change records, stable cursors and feed timestamps

Luhn check for digit strings (cards/IDs). Call when you reject obviously invalid card-shaped numbers before payment UI. Returns valid boolean and digit count for $0.001 USDC via x402 on Base. Checksum only—not issuer, funds, or PAN storage. No network, no keys, no retention. Results are advisory; the caller owns budgets, auth, and production controls.

Luhn checksum validation for digit strings 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.

Did the MCP server you approved change since you pinned it? Re-fetches the live tool manifest and returns a signed diff (added/removed/modified tools) against the stored pin. $0.01 USDC per check.

Signed drift history for one MCP server: pins over time, every detected drift event, and a current verdict (stable, changed, or poisoning-suspect). $0.05 USDC per report.

MCP server readiness API for agents: audit tools/list, schemas, manifests, discovery, and integration readiness for $0.01 USDC before publishing or connecting a client.

MCPFax markets crypto

MCPFax markets stablecoin

MCPFax markets — Chain TVL ranking (defi_chains). Price: $0.001 USDC per call on Base.

MCPFax markets — On-chain token prices (defi_token_prices). Price: $0.001 USDC per call on Base.

MCPFax markets — Polymarket markets (polymarket_markets). Price: $0.001 USDC per call on Base.

MD5 hex digest of text. Call when you match legacy content hashes (not for security). Returns hex digest for $0.001 USDC via x402 on Base. Legacy checksum only—not password hashing. No network, no keys, no retention. Results are advisory; the caller owns budgets, auth, and production controls.

Is this Minneapolis rental property licensed and in compliance? Query any street address in Minneapolis, Minnesota (Hennepin County) and get the active rental license -- status, tier, licensed unit count, expiration -- plus violation and code-enforcement case history, and whether the property is condemned or boarded. For tenant screening, landlord and property-manager due diligence, real-estate and lending checks. Input: address string. Output: JSON, live City of Minneapolis open data. (US ne...

Is this Minneapolis Minnesota (Hennepin) rental licensed and code-compliant? GET ?address= (street 1-120 chars). Returns compliance_verdict (licensed_clean|licensed_with_violations|unlicensed|condemned_or_boarded), active rental license status/tier/units/expiration, violation cases, condemned/boarded flag. Live City open data JSON. Jobs: tenant screening, landlord DD, lending. Free sample: /mn/property-check/sample.

MPP-native catalog-first task router: paid top-three shortlist with prices, payment methods, MCP schemas, health metadata and operator source attribution

Get a sourced, versioned medical procedure price corridor with an Ed25519 evidence receipt.

Analyse supplied CFD convergence, continuity, mass-flow and provenance evidence against declared v1 acceptance criteria. Returns calculated measurements, reasons, hashes and limitations; no formal engineering certification.

Durable asynchronous GPU-job submission. Settlement means the job was accepted and a job_id was returned; it does not mean the eventual PINN result converged or passed validation.

Reviews Polymathica's governed experiment memory and returns advisory dream candidates, review decisions, and solver/PINN recommendations without running solvers, mutating registries, exposing raw source runs, or applying MEMORY.md changes.

Search the full US Treasury OFAC Specially Designated Nationals (SDN) list -- name, sanctions programme, and entity type -- for compliance/denied-party screening. Complete 19,199-entry list, not a bounded sample.

Aggregate transaction patterns across this marketplace's payment rails -- volume, success rate, and task-state breakdowns by rail and time window. Aggregate only: no individual buyer's wallet address, transaction hash, Lightning node id, or payment record is ever included, by design.

Retrieve a bounded evidence report for a validated Polymathica solver, including validation state/version, implementation source, evidence location, scope summary and registry-snapshot provenance.

Search a bounded snapshot of the UK Companies House register -- company name, number, status, category, registered address, and SIC code. Published under the Open Government Licence v3.0, which explicitly permits commercial reuse.

Search recent UK property sale prices from HM Land Registry -- property type, price, town, district, and county. Published under the Open Government Licence v3.0. Address-line fields (postcode, street, house name/number) are deliberately excluded, since Land Registry's own licensing note flags those as carrying a separate Royal Mail restriction beyond the OGL grant on the transaction data itself.

Metadata about the GPU/LLM pricing feed's tracked targets: source URL, last-fetch time, content hash, and parse status per provider. No pricing values themselves -- use the pricing listing for that. No outbound network on purchase; read from the local feed database.

Per-target pricing change events -- whether the latest scraped snapshot differs from the previous one, with fetch times and content hashes for both. No outbound network on purchase; read from the local feed database populated by the scraper on a 6-hour cadence.

Real-time GPU and LLM API pricing data scraped from public cloud provider websites. Structured, parsed pricing with per-provider plan details, source URLs, content hashes, and freshness. No outbound network on purchase — data is read from the local feed database populated by the scraper on a 6-hour cadence.

Search a bounded snapshot of NVD (NIST) CVE records merged with the complete CISA Known Exploited Vulnerabilities list -- description, CVSS severity, and whether the CVE is known to be actively exploited in the wild.

Returns reproducible aggregate statistics for the sanitized Polymathica archive census: 77,053 source rows, unique hashes, domains, file types, readiness and quarantine counts.

Search a bounded, normalized snapshot of significant recent earthquake events with magnitude, time, depth, location, stable USGS links and provenance. Event-level reuse rights remain unknown because ComCat includes contributing seismic networks.

Search macroeconomic indicator values (GDP, inflation, unemployment, population) across eight major economies and multiple recent years. Published under CC BY 4.0, explicit commercial reuse permitted.