Probative legal-market research

Legal-marketing open data

Published by Probative Growth, a marketing agency for US law firms (SEO and ads, at published monthly prices). Prices: probativegrowth.com/pricing · About: probativegrowth.com/about

Open, citable datasets on US law-firm marketing, maintained by Probative Growth: lawyer advertising rules for all 50 states and DC, bar ad filing and fees, ethics opinions, ad-platform policies, attorney fee caps, federal MDL dockets, Spanish-language demand, and official court, complaint, crash, price and wage statistics.

Every record quotes its primary source and the date it was checked. Each dataset has a DOI on Zenodo. Not legal advice: check the source and your own counsel before you rely on a rule.

Each folder holds the full CSV and JSON, a README.txt with the fields, changes.json (the change log), openapi.json, CITATION.cff and starter.ipynb (a notebook that loads the data and works through example questions; on Kaggle, import it from its GitHub link). Found a wrong value? Report it here. The root has a CITATION.cff (GitHub's "Cite this repository" button) and a Frictionless datapackage.json that describes every CSV and its fields. Each dataset version has a tagged release.

Live API and MCP server

• JSON API: https://probativegrowth.com/data/v1/index.json (the same records, sharded by state, metro or topic).
• MCP server (read-only, no auth): https://probativegrowth.com/mcp. Listed in the official MCP Registry as com.probativegrowth/legal-marketing-data.
• Docs: https://probativegrowth.com/resources/rules-api/

Install the MCP server

Streamable HTTP, no key, no sign-in. Step-by-step setup for AI agents is in llms-install.md.

One click: Add to VS Code · Add to Cursor (each opens the app and asks you to confirm).

• Claude (web and desktop): Customize, then Connectors, then add a custom connector with the URL https://probativegrowth.com/mcp and no sign-in.
• Claude Code: claude mcp add --transport http probative https://probativegrowth.com/mcp, or install this repo as a plugin: /plugin marketplace add ops864/legal-marketing-data then /plugin install legal-marketing-data@probative
• ChatGPT: in developer mode, create a connector with the URL above and no authentication.
• VS Code (.vscode/mcp.json): {"servers": {"probative": {"type": "http", "url": "https://probativegrowth.com/mcp"}}}, or code --add-mcp '{"name":"probative","type":"http","url":"https://probativegrowth.com/mcp"}'
• Cursor (mcp.json): {"mcpServers": {"probative": {"url": "https://probativegrowth.com/mcp"}}}. Cursor also reads .cursor-plugin/ in this repo.
• Windsurf (Cascade, MCP config file): {"mcpServers": {"probative": {"serverUrl": "https://probativegrowth.com/mcp"}}}
• Cline (cline_mcp_settings.json): {"mcpServers": {"probative": {"type": "streamableHttp", "url": "https://probativegrowth.com/mcp"}}} (without type, Cline assumes the older SSE transport)
• Gemini CLI: gemini mcp add --transport http probative https://probativegrowth.com/mcp, or gemini extensions install https://github.com/ops864/legal-marketing-data (reads gemini-extension.json)
• OpenAI Codex: in ~/.codex/config.toml, [mcp_servers.probative] with url = "https://probativegrowth.com/mcp"

Each dataset also has its own smaller server:

• https://probativegrowth.com/mcp/rules: Lawyer advertising rules for all 50 states and DC, each with its source and status.
• https://probativegrowth.com/mcp/ad-costs: Google search-ad top-of-page bid bands and competition for lawyer searches, for the whole US, all 50 states and DC.
• https://probativegrowth.com/mcp/attorneys: Attorneys by county for OH, CA, MI, ID, AZ, WA and PA from each bar's public counts, per 10,000 residents, with status and as-of date.
• https://probativegrowth.com/mcp/aviation-accidents: NTSB civil aviation accidents by state and year, 2008 to 2026: accidents, deaths, injuries and type of operation.
• https://probativegrowth.com/mcp/bankruptcy: Bankruptcy filings by chapter, court district, state and county, quarterly from U.S. Courts tables F-5A, F-2 and F.
• https://probativegrowth.com/mcp/bar-pipeline: New lawyers by jurisdiction: bar exam pass rates and admissions, 2025.
• https://probativegrowth.com/mcp/benchmarks: Probative's law-firm marketing benchmarks, approximate and shown as ranges.
• https://probativegrowth.com/mcp/boating-accidents: USCG recreational boating incidents by state and year, 2019 to 2024: incidents, deaths, injuries and damage in dollars.
• https://probativegrowth.com/mcp/business-applications: Census new business applications by county, 2005-2025: latest count, change over a year and since 2019, state sums.
• https://probativegrowth.com/mcp/ca-courts: Cases filed in each California county's superior court, by case type.
• https://probativegrowth.com/mcp/certified-specialists: Board-certified lawyer counts by practice area and state from official state lists (Tennessee, Minnesota).
• https://probativegrowth.com/mcp/charge-deadlines: Deadlines to file an employment-discrimination charge, federal and by state, with the statute and verbatim quote.
• https://probativegrowth.com/mcp/civil-filings: Federal civil filings by nature of suit and district since 2018.
• https://probativegrowth.com/mcp/consumer-complaints: CFPB complaints about debt collection, credit reporting and debt management, by state and month since 2018.
• https://probativegrowth.com/mcp/consumer-sentinel: FTC Consumer Sentinel reports by state: fraud, identity theft and imposter scams per 100,000 people (2024 Data Book).
• https://probativegrowth.com/mcp/county-income: IRS income and migration by county: returns, adjusted gross income, change per return, net moves in and out of other states.
• https://probativegrowth.com/mcp/court-fees: Small-claims dollar limits by state, with the statute or court page and the verbatim quote.
• https://probativegrowth.com/mcp/crime-data: FBI violent and property crime, DUI and drug arrests by county and state, five years, with how many agencies reported.
• https://probativegrowth.com/mcp/criminal-filings: Federal criminal defendants by offense and district, U.S. Courts Tables D-1 to D-3, every half-year since 2017.
• https://probativegrowth.com/mcp/crosswalks: Join keys for every dataset: practice areas, federal case codes, states, federal districts and counties.
• https://probativegrowth.com/mcp/demand-per-law-office: Demand per law office by state: residents, bankruptcies, fatal crashes, divorces, Spanish speakers and evictions per law office, in thirds.
• https://probativegrowth.com/mcp/deserts: Law offices and lawyers per resident in every US county (legal deserts).
• https://probativegrowth.com/mcp/device-events: FDA medical device adverse event reports by product code and quarter: reports, deaths, injuries, malfunctions (top 300 codes).
• https://probativegrowth.com/mcp/disability-hearings: SSA disability hearing waits, cases pending and processing times by hearing office.
• https://probativegrowth.com/mcp/drug-events: FDA FAERS drug adverse event reports by active ingredient and quarter: serious, deaths, top reactions, MDL tags.
• https://probativegrowth.com/mcp/eeoc-charges: EEOC workplace-discrimination charges by state and basis, FY2009 to FY2025.
• https://probativegrowth.com/mcp/eviction-laws: Eviction laws of every state, DC and five territories (Jan. 2021): notice, cure, just cause, late fees, timing, with the statute.
• https://probativegrowth.com/mcp/evictions: Eviction filings by county and year from LSC's Civil Court Data Initiative, with filings per 100 renter households.
• https://probativegrowth.com/mcp/fair-housing: HUD fair housing cases filed 2006 to June 2020 by state, county and basis (race, disability, familial status and more).
• https://probativegrowth.com/mcp/fatal-crashes: NHTSA fatal crashes by county since 2019: trucks, motorcycles, pedestrians and bicyclists.
• https://probativegrowth.com/mcp/federal-filings-county: Federal civil cases filed by plaintiff county, state, district and case type, ten years, with out-of-state totals.
• https://probativegrowth.com/mcp/fees: Attorney fee caps and contingency-fee limits by state and federal program, plus a fee-cap calculator.
• https://probativegrowth.com/mcp/filing: What each state bar charges and requires to file or review lawyer ads.
• https://probativegrowth.com/mcp/findings: Headline US legal-market counts, each with its denominator, limits and source dataset DOI.
• https://probativegrowth.com/mcp/firm-web-census: US law firms by state, county and practice: firms per practice, Spanish pages, 24/7 intake, coverage vs Census counts.
• https://probativegrowth.com/mcp/flood-claims: FEMA NFIP flood insurance claims and dollars paid by county, state and year of loss, 1978-2026, with the top storm since 2016.
• https://probativegrowth.com/mcp/green-cards: New green cards (lawful permanent residents) in the top 200 counties by class of admission and country of birth, with state totals.
• https://probativegrowth.com/mcp/hospital-safety: CMS Care Compare hospital patient-safety (PSI 90) and infection ratings by state and county, rated against the national benchmark.
• https://probativegrowth.com/mcp/idb-civil: Federal civil case outcomes (FJC IDB): time to disposition, how cases end, class actions and pro se share, by district and type.
• https://probativegrowth.com/mcp/immigration-courts: Immigration court backlog, representation and asylum outcomes by state and court, from EOIR workload statistics and case data.
• https://probativegrowth.com/mcp/irs-databook: IRS Data Book by state, fiscal years 2019 to 2025: returns filed, gross collections and refunds issued.
• https://probativegrowth.com/mcp/language: Spanish speakers with limited English per Spanish-speaking lawyer, by state and metro.
• https://probativegrowth.com/mcp/law-firm-ai-readiness: US law-firm websites by state and market: rules for 8 AI crawlers and controls, text before JavaScript, FAQ markup, Spanish pages.
• https://probativegrowth.com/mcp/law-firm-economy: Law firms by size and state (Census SUSB, Nonemployer Statistics, Economic Census): firm counts, receipts and solo practices.
• https://probativegrowth.com/mcp/law-firm-websites: US law-firm website census: Spanish pages, booking, chat, schema and HTTPS by state and practice, with Spanish demand per website.
• https://probativegrowth.com/mcp/law-offices: Law offices, jobs and pay by county, with solo-practice counts (BLS, Census).
• https://probativegrowth.com/mcp/lawyer-wages: Lawyer and paralegal pay by state and metro from BLS OEWS: employment, mean and median wages and percentiles.
• https://probativegrowth.com/mcp/legal-aid-orgs: Legal-aid, public-interest-law and civil-rights nonprofits per county, state and US, by type and revenue band (IRS EO BMF).
• https://probativegrowth.com/mcp/legal-hiring-demand: Pay bands and headcounts for law-firm marketing, web and intake roles by state, plus monthly legal services employment and openings.
• https://probativegrowth.com/mcp/legal-need: Who may need a lawyer in every US county (Census ACS): 65+, 75+, 85+, living alone, noncitizens, LEP, divorced, veterans, renters.
• https://probativegrowth.com/mcp/legal-prices: Legal-services prices and jobs, monthly from BLS: the CPI and PPI legal-services indexes and legal-services employment.
• https://probativegrowth.com/mcp/legal-profession-figures: Legal profession figures: BLS lawyer and paralegal jobs and pay, LSC justice gap, each re-read at source with its quote.
• https://probativegrowth.com/mcp/limitations: Statutes of limitations by state for five kinds of civil claim, quoted from the code.
• https://probativegrowth.com/mcp/marriage-divorce: CDC NCHS divorce and marriage rates per 1,000 residents by state, 1990-2024, and national divorce and marriage counts since 2000.
• https://probativegrowth.com/mcp/mdl: Pending actions in every federal MDL, monthly since 2019.
• https://probativegrowth.com/mcp/mine-accidents: MSHA mine accident, injury and illness reports by state, county and degree of injury, 2000 to 2026, coal and metal/nonmetal.
• https://probativegrowth.com/mcp/mortgage-delinquency: CFPB share of mortgages 90+ and 30-89 days delinquent by county and state, monthly since 2008, with the change and the 2008-2025 high.
• https://probativegrowth.com/mcp/mortgage-lending: HMDA home-purchase and refinance applications, loans, dollars and denial rates by county, state and US.
• https://probativegrowth.com/mcp/noncitizen-population: Noncitizen and naturalized-citizen residents by state and county from Census ACS table B05001, with margins of error.
• https://probativegrowth.com/mcp/nursing-homes: Nursing home fines, harm and abuse citations by county and state, from CMS, monthly.
• https://probativegrowth.com/mcp/ny-attorneys: New York attorneys by county of office, registration status and admission decade, per 10,000 residents, from the court registry.
• https://probativegrowth.com/mcp/ny-workers-comp: New York workers' compensation claims by county and accident year: attorney share, controverted, hearings, permanent disability.
• https://probativegrowth.com/mcp/opinions: State and ABA ethics opinions on lawyer advertising and marketing, 2015 to 2026.
• https://probativegrowth.com/mcp/osha-enforcement: OSHA inspections, violations and current penalties by state and industry from the DOL enforcement files, latest year and ten-year window.
• https://probativegrowth.com/mcp/platforms: Ad-platform policies that touch law-firm ads: Google, Microsoft, Meta, LinkedIn, YouTube, ChatGPT.
• https://probativegrowth.com/mcp/population-change: Census county deaths, births, international and domestic migration, and residents 65+, 75+ and 85+, Vintage 2025 (years 2020 to 2025).
• https://probativegrowth.com/mcp/practice-official: Official statistics (U.S. Courts, EEOC, EOIR, NHTSA FARS) quoted on the practice x state pages, one sourced sentence per record.
• https://probativegrowth.com/mcp/product-recalls: CPSC consumer product recalls by year and hazard class, with the notices that report an injury or a death.
• https://probativegrowth.com/mcp/rail-casualties: Railroad casualties, crossing incidents and train accidents by county from FRA Forms 55a, 57 and 54, by who was hurt.
• https://probativegrowth.com/mcp/referral: Referral-fee and fee-splitting rules for lawyers, by state.
• https://probativegrowth.com/mcp/robocall-complaints: FCC complaints about unwanted calls and texts, by state and month.
• https://probativegrowth.com/mcp/search-demand: Monthly Google lawyer searches by practice, EN and ES, for the whole US, all 50 states and DC, with suggestions and searches per firm.
• https://probativegrowth.com/mcp/serp-landscape: Google search landscape for legal searches: directories, videos, People Also Ask and concentration, by practice, search type and language.
• https://probativegrowth.com/mcp/state-civil-rights: State civil-rights agency complaint and charge counts with the source document and quote for each figure.
• https://probativegrowth.com/mcp/state-courts: State trial-court case filings by county and case type (TX WA MD IN WI VA PA OR WV NE ME CA LA HI), by practice area, with county FIPS.
• https://probativegrowth.com/mcp/state-wage-claims: State labor agency wage claim counts with the source document and quote for each figure.
• https://probativegrowth.com/mcp/toxic-releases: EPA TRI toxic chemical releases by county: facilities, pounds on site, carcinogens, PFAS, benzene, lead, ethylene oxide.
• https://probativegrowth.com/mcp/truck-crashes: FMCSA truck and bus crashes by county, state and year: fatal and injury crashes, deaths and injuries, ten years.
• https://probativegrowth.com/mcp/tx-nonsubscribers: Texas employers with no workers' compensation coverage (DWC Form-005 filings), counted by county, 2024 to 2026.
• https://probativegrowth.com/mcp/unemployment: BLS county and state unemployment rate, unemployed and labor force, annual averages and the latest month.
• https://probativegrowth.com/mcp/union-membership: BLS union members and workers represented by unions by state, 2024-2025: thousands and percent of employed wage and salary workers.
• https://probativegrowth.com/mcp/uscis-offices: USCIS naturalization (N-400) and green card (I-485) applications received, decided and pending, by field office and quarter.
• https://probativegrowth.com/mcp/va-compensation: VA disability compensation recipients by county and combined rating (0-20% to 100%), age, sex, FY2025 vs FY2024.
• https://probativegrowth.com/mcp/va-spending: VA compensation, pension and survivor benefit dollars by county, FY2025, with the year-earlier change.
• https://probativegrowth.com/mcp/vehicle-complaints: NHTSA vehicle safety complaints by state, make, model year and component: crashes, fires, injuries, deaths, recalls.
• https://probativegrowth.com/mcp/veterans-representation: VA-accredited attorneys and claims agents per veteran by state, county counts, and appeals outcomes by representation.
• https://probativegrowth.com/mcp/wage-enforcement: DOL wage-and-hour back wages and OSHA inspections, violations and penalties by county, state, law and industry, ten years.
• https://probativegrowth.com/mcp/warn-layoffs: WARN layoff and closure notices and employees by county and month for California and Texas.
• https://probativegrowth.com/mcp/wc-benefits: Workers' compensation maximum weekly benefit by state, with the period, the agency source and the verbatim quote.
• https://probativegrowth.com/mcp/work-injuries: Workplace injuries and fatal work injuries by state and industry, from BLS SOII and CFOI: rates, case counts and the riskiest sectors.

Mirrors

• Hugging Face: https://huggingface.co/datasets/ProbativeGrowth/legal-marketing-data (CSV and JSON, one config per dataset)
• Kaggle: https://www.kaggle.com/datasets/probativeoperations/legal-marketing-open-data-us (CSV and JSON, with the data dictionaries)

License

CC BY 4.0. Credit "Probative Growth" and link the dataset page. See LICENSE.

Updates

This repository mirrors the published files. The site is the source of truth; each dataset's changes.json and its Zenodo versions record what changed and when.