"Using Claude to Check the Current Weather Without an API Key" matching MCP servers:

Enables users to check whether a UK employer is licensed to sponsor a visa and whether a salary meets Skilled Worker thresholds, drawing on the official Home Office register of licensed sponsors and published GOV.UK salary rules. Exposes read-only tools for sponsor verdicts, fuzzy employer search, salary checks, and register metadata from Claude or the command line.

Enables users to validate contractor invoices against Article 4 of a framework contract with exact decimal calculations, generate Dutch draft letters, and review proposed approve, dispute, or hold verdicts in a local dashboard with an append-only decisions log.

Provides authoritative open source license answers: SPDX identification, copyleft classification, and compatibility checks of dependencies against your project's license.

Enables AI agents to validate a Japanese qualified invoice against the six required items, reduced-rate markings, per-rate totals, and once-per-invoice-per-rate tax rounding, while flagging the common line-by-line rounding mistake, and to normalize and verify T + 13-digit registration numbers. Read-only tools also compute expected consumption tax for a given amount, rate, price basis, and rounding method.

Enables an AI agent to verify its draft answer against supplied sources sentence by sentence, flagging unsupported figures, dates, citations, and must/may wording and offering source-backed corrections. An optional judge mode can additionally assess prose via a configured LLM endpoint, while default operation is deterministic and offline.

MCP server for verifying Russian counterparties (legal entities and individual entrepreneurs) via public Federal Tax Service data: EGRUL/EGRIP, bankruptcy registry (EFRSB), Transparent Business, bailiff service (FSSP), and arbitration courts (KAD).

Enables AI agents to perform counterparty due-diligence by Russian INN, aggregating open registries (EGRUL, FSSP, courts, bankruptcies, finances) into a risk traffic light with source-backed signals, sanctions screening, affiliate graph, and fragmentation indicators via read-only MCP tools.

Free wallet-OFAC SDN screening and trust-check preview for AI agents on Base. Single MCP tool call returns allow/block verdict against US Treasury OFAC SDN list.

Enables pay-per-call screening of individuals and entities against the HHS-OIG List of Excluded Individuals and Entities (LEIE), with x402 payment and an MCP interface for agents.

Enables AI agents to look up companies and their Legal Entity Identifiers (LEIs) worldwide from GLEIF open data, including best-match name searches, single-LEI lookups, and bulk queries of up to 500 entries with optional parent entities. Results come from the Global Company Check actor on Apify, billed to the user's own account with no charge for companies not found.

Enables automated company formation across multiple jurisdictions with REST and MCP interfaces. Supports jurisdiction listing, requirement details, cost estimation, and secure API key management.

An MCP server that enables patent creation and analysis, including regulation search, prior art discovery, claim compliance checks, and patent diagram generation, all within Claude Code.

Assesses event safety by providing prioritized actions, documentation needs, risk factors, and applicable regulations based on event conditions such as venue, crowd size, and setup.

MCP server for Azerbaijan's official legal-acts database (e-qanun.az), enabling search, metadata retrieval, and full-text access to legislative and judicial documents.

Enables users to search and vet US financial advisors, brokers, and firms using live FINRA BrokerCheck public records, returning registration status, disclosures, employment history, ranked plain-English red flags, and suggested questions to ask. Supports name-based searches and full profiles by CRD number for both individuals and firms.

Enables Claude Desktop and Claude Code to query Korean KIPRIS Plus and European EPO OPS patent data for bibliographic details, family members, legal status, claims, descriptions, abstracts, and search results using each user's own free API keys.

Enables users to search MPEP/USC/CFR patent rules, run prior-art searches across 100M+ patents via BigQuery, check 35 USC 112 compliance, and generate patent-style diagrams and draft application workflows.

Enables MCP-compatible clients to search patent rules and regulations with hybrid vector/lexical retrieval and citations, run prior art searches over 100M+ patents via BigQuery, check drafts for USPTO 35 USC 112 compliance, and generate patent-style diagrams. It exposes 20+ tools covering search, analysis, and diagram generation so users can go from an idea to a reviewable draft application.

Enables checking AI-drafted answers to US retirement-account questions, flagging wrong facts, personal recommendations, and promissory claims with IRS or FINRA sources before they reach customers.

Cross-checks company/entity records against 23 national commercial registries (GLEIF, SIRENE, VIES, TED, Companies House) to flag missing or inconsistent registrations. Free tier: 100 calls/month via hosted API.

Enables Claude-compatible clients to search MPEP/USC/CFR patent rules and 100M+ patents via BigQuery, run prior-art and 35 USC 112 compliance checks, and generate patent-style diagrams through programmatic tools.

Enables MCP-compatible clients to search patent rules and prior art across MPEP/USC/CFR and 100M+ patents, run automated 35 USC 112 compliance checks, and generate patent-style diagrams.

Exposes 20+ MCP tools that let clients query MPEP/USC/CFR rules through hybrid vector and lexical search, run prior-art searches across 100M+ patents via Google BigQuery, flag compliance problems in draft claims and applications, and generate patent-style diagrams. It works programmatically from any MCP-compatible client to support drafting and analysis workflows.

Exposes 20+ tools that let users search MPEP/USC/CFR patent rules via hybrid RAG, hunt prior art across 100M+ patents through Google BigQuery, run automated 35 USC 112 compliance checks on claims and applications, and generate patent-style diagrams.

Enables MCP-compatible clients to search MPEP/USC/CFR patent rules, perform prior-art searches across 100M+ patents via BigQuery, run 35 USC 112 compliance checks, and generate patent-style diagrams through programmatic tools.

Exposes 20+ programmatic tools that any MCP-compatible client can call to search patent rules and statutes with citations, hunt prior art across 100M+ patents via Google BigQuery, check drafts for examiner-style compliance problems, and generate patent-style diagrams. It serves as the underlying engine for patent research, analysis, and application drafting workflows.

Exposes tools for hybrid RAG search over MPEP/USC/CFR, BigQuery access to 100M+ patents, automated 35 USC 112 compliance checks, prior art search, and patent-style diagram generation through MCP-compatible clients.

Enables MCP-compatible clients to search MPEP/USC/CFR rules and 100M+ patents via BigQuery, run automated patent compliance and prior-art checks, generate diagrams, and assemble reviewable patent draft packages.

Exposes 20+ tools that let any MCP-compatible client answer patent-rule questions from MPEP/USC/CFR via hybrid vector, lexical, and reranked search, hunt prior art across 100M+ patents through Google BigQuery, run automated 35 USC 112 compliance and claim-definiteness checks, and generate patent-style diagrams. It also supports a guided idea-to-draft-application workflow covering claims, specification, and formatting review for US and European filing.

Exposes 20+ tools that let any MCP-compatible client search patent rules and statutes (MPEP, USC, CFR) with hybrid RAG retrieval, hunt prior art across 100M+ patents via Google BigQuery, run automated claims and application compliance checks, and generate patent-style diagrams. It also provides CLI-driven setup, GPU-accelerated indexing, and health reporting so users can move from a raw invention description to a reviewable draft application.