"How to add MCP to the Firefox browser" matching MCP servers:

Enables AI assistants to look up US census tract, block group, block, county FIPS, and legislative districts from a street address or latitude/longitude via the Census Geocoder, and to decode census GEOIDs offline.

MCP server for consulting vehicle data from DETRAN TO official source. Read-only, pay-per-use, works with any MCP-compatible client.

Enables users to query IPVA (vehicle property tax) data from the official SEFAZ TO source via a read-only MCP tool.

Enables searching government awards through the Sell to State API by proxying JSON-RPC to the live HTTP MCP endpoint, requiring an API key.

Enables querying SINTEGRA TO (state tax information) through a read-only MCP server, using natural language.

Enables AI assistants to query the official DETRAN TO source for CRLV printing via a read-only, hosted MCP server with pay-per-query prepaid credit.

Read-only MCP server for querying SEFAZ Tocantins (SEFAZ TO) NFC-e (electronic consumer invoice) data from official government sources via natural language, working with any MCP-compatible client such as Claude, Cursor, VS Code, and more.

Enables lookup of licensed US real estate agents on official state license registers by license number or name, returning the brokerage of record along with its active agent count, size band, and the agent's license status and expiry. It also lists every active agent at a given brokerage or every brokerage office in a zip code across 19 states.

Enables querying of a locally pinned snapshot of the Education-to-Workforce Indicator Framework — 99 indicators and 11.8M observations — to browse questions, describe metrics, resolve places, and fetch or rank data across national, state, county, and district levels.

Provides a read-only MCP tool to consult official SEFAZ TO negative debt certificates via a hosted, prepaid API.

Enables consultation of negative debt certificates (Certidão Negativa de Débitos) from the Palmas, TO city government through an official source.

MCP server for querying negative certificates of court proceedings (Certidão Negativa de Feitos) from MPT DF e TO via official sources, with prepaid credit and read-only access.

Enables natural language queries to official dental council registration data in Tocantins, Brazil. Read-only, hosted, and works with any MCP client.

Enables searching and retrieving UK research grants, award values, institutions, and publications from the UKRI Gateway to Research API without authentication.

Enables read-only lookups of state septic licensing agencies with their official verification URLs, searches of license-matched septic contractors by state, city, county, zip or service, and retrieval of sourced septic cost guides. Every response carries a thesepticguide.com source link, requires no API key, and reports its snapshot date.

Provides real, official public holiday data for ~100 countries with tools to list holidays for a year and check if a specific date is a holiday. Free, no API key required, powered by Nager.Date.

Exposes India's open government data (data.gov.in) APIs via the Model Context Protocol, enabling agentic AI data exploration.

This MCP server enables interaction with the Punjab State Board of Technical Education and Industrial Training API, allowing access to technical education services and information through natural language.

MCP server for the Canton of Bern tax portal TaxMe/BE-Login that reads account statements and tax returns via Playwright browser automation.

Enables AI assistants to check whether a quote from the EU AI Act matches the right version on a given date, compare provisions across the 2024 and 2026 texts, and emit evidence records that anyone can recompute in a browser against signed corpus releases.

Enables natural language, read-only access to the SPA system of the Prefeitura Municipal de Teresina, allowing users to query process boxes, urgent deadlines, recent entries, triage briefings, and judicial documents via pure HTTP without a browser.

Enables users to create, read, and add photo evidence to environmental notices, search contextual channels, prepare referrals, and add receipts via stateless MCP tools with private credentials and gateway identity.

A high-performance MCP server for the USPTO Patent File Wrapper API with context reduction, smart field mapping, and secure browser-accessible downloads.

Enables AI agents to research U.S. companies and associated people using official state registries and free regulatory datasets, with normalized evidence and optional browser automation.

Exposes read-only tools for querying USDA FAS PSD Online commodity supply and distribution data, with every response carrying release metadata such as source, endpoint, retrieval time and vintage. Results are capped by row count and size, with guidance returned on how to narrow a query.

Enables US import compliance by providing CBP customs ruling letter searches and antidumping/countervailing duty order lookups, answering how Customs has classified products and whether trade-remedy duties apply.

Enables AI agents to look up how each U.S. House member voted on individual House Clerk roll calls, to retrieve a member's attendance and party-line voting shares with explicit denominators and exclusions, and to list every member's position on a given roll call. Keyless, covering the 119th Congress (sessions 1 and 2), with unsupported chambers and Congresses returning a stated reason.

Converts natural-language questions into ranked recommendations of authoritative primary data sources, complete with authority levels, access URLs, API details, and traceable evidence chains. Also provides step-by-step site navigation guides that pinpoint exactly how to reach the target data on complex government, international organization, and market disclosure websites.

Enables users and AI agents to resolve tickers, CIKs, or company names to official SEC entity data and retrieve recent EDGAR filings, XBRL financial facts, and optional filing-text excerpts. It delivers structured, source-linked rows for research and tooling, with schema-versioned output and machine-readable error codes.

Enables agents to fuzzy-screen person and company names against the OFAC SDN/Consolidated, EU, UK and UN sanctions lists downloaded fresh from official sources, returning potential-match statuses, 0–100 scores and listing details via a billed screening tool, plus a free local tool that lists covered sources, score scale and disclaimer.