Probative MCP server

Which MCP servers are Probative's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-29

← Back to Probative

Whose server it is

Registry namecom.probativegrowth/legal-marketing-dataverified in the MCP registry

The registry name sits under probativegrowth.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-29

Stateanswerschecked 2026-10-29
Tools24
Server calls itselfcom.probativegrowth/legal-marketing-data
Server version1.4.0
Protocol version2025-06-18

On 2026-10-29 the server answered initialize and tools/list without a sign-in. First answer in 45 ms.

Should an agent connect itNot proven either way yet

Whether its tools do the product's job has not been judged yet.
Checked on 5 of the 7 days it takes to judge reliability.

Once connected

Parameters are untyped or undescribed in 22 of 24 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 5, the first on 2026-10-29

INITE MCP scoreafter a weeka score needs 7 daily checks: 5 so far
Answeredmeasuring5 of the 7 daily checks it takes to print a share
Median first answer133 ms
Space in an agent's context≈ 4,406 tokensthe definitions of all its tools (24), which an agent carries on every turn
Tool definitionsB · 85 of 100
Typed results24 of 24 toolsdeclared outputSchema: results come typed, read once

Parameters without a description: in 22 of 24

What an agent can do with it

cannot · Run Google ads that route calls to the firm's intake team
not sure · Track which calls became signed clients and their cost
not sure · Get the firm named in ChatGPT and Google answers

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers24 tools · read 2026-10-29

list_datasets
Every public dataset on this server: what it covers, its version, DOI, license (CC BY 4.0), credit line, last-checked date, the page to cite, its files and its tools.
cite
How to cite a dataset, a state or one record: the citation sentence, credit line, DOI and URL to cite. CC BY 4.0 asks for credit and a link.
data_lookup
Figures for one state, county or other key from one open dataset, e.g. limitation periods, lawyers per resident, bankruptcy filings, law firms, court backlogs. Results are not legal advice.
get_state_rules
Every lawyer advertising rule for one US state or DC in one call: filing, disclaimers, waiting periods, claims, referrals, language, recording, texting, privacy. Results are not legal advice.
whats_new
What changed lately in any of the datasets (or only the `datasets` named), newest first, with the date and source of each. Optional `since` (YYYY-MM-DD).
get_rule
One state's lawyer advertising rule on one topic, e.g. can a firm text leads, record intake calls, pay referral fees, what disclaimer every ad must include. Results are not legal advice.
list_mdl_dockets
Federal multidistrict litigation (MDL) dockets from the Judicial Panel on Multidistrict Litigation's monthly pending-dockets reports, largest first. Results are not legal advice.
get_spanish_demand_supply
Spanish speakers with limited English per Spanish-speaking lawyer in one US state, DC, the US or a metro area (Census ACS). Results are not legal advice.
compare_states
Which states do what: one ad-rule topic (e.g. the waiting period before contacting accident victims, texting, filing) side by side across states, or all 50 and DC. Results are not legal advice.
check_ad_elements
Which of one state's lawyer ad rules an ad touches, from what it contains (testimonials, past results, expert claims, actors, Spanish, AI) or its text. Results are not legal advice.
get_ad_filing_requirements
Whether a state's bar requires lawyers to file or submit ads for review, which ads, when. Results are not legal advice.
search_ethics_opinions
Bar ethics opinions (ABA and state) on lawyer marketing, e.g. pay-per-lead, Google reviews, AI chatbots, referral fees, social media. Results are not legal advice.
calculate_fee_cap
The most a lawyer may charge, in dollars, on one award, settlement or past-due benefit under a legal fee cap.
search_rules
Keyword search across all rule text, for a word or claim such as "expert" or "guaranteed results". Results are not legal advice.
list_rule_changes
Recent confirmed changes to state lawyer advertising rules only, newest first, with the date, state, rules touched and primary source of each.
get_attorney_fee_caps
The fee-cap rules (percent and dollar limits on attorney fees) for one state or federal program: workers' comp, med-mal, contingency, SSDI, FTCA, VA. Results are not legal advice.
get_benchmark
Published benchmark tables on law-firm intake and marketing, as bands, tiers and rounded values with the methods page to cite.
get_ad_platform_policies
What Google Ads, Local Services Ads, Microsoft, Meta, LinkedIn, YouTube and ChatGPT ads allow for law-firm ads: eligibility, verification, targeting, creative. Results are not legal advice.
get_ca_court_filings
California only: cases filed in one county's superior court (or CA for the whole state) in fiscal year 2024-25, by case type, with the prior year. Results are not legal advice.
data_search
Find records by words across the open datasets when you do not know the key, e.g. "nursing home abuse" or "legal services price index". Results are not legal advice.
data_compare
Compare up to 10 states, counties or other keys of one dataset side by side, e.g. lawyer pay or bar pass rates in two states. Results are not legal advice.
search
Id search for deep-research clients: returns ids, titles and URLs to read with fetch; the named tools answer one question directly.
get_state_market_brief
Every public number about marketing a law firm in one state or DC, joined from seven open datasets. Results are not legal advice.
fetch
The full text of one record found with search (ids like rules:TX:filing, opinions:ny-nysba-1306 or benchmarks:speed-to-sign). Not legal advice.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "legal-marketing-data": {
      "type": "http",
      "url": "https://probativegrowth.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http probativegrowth https://probativegrowth.com/mcp

Add to Cursor Add to VS Code

claude.ai, ChatGPT and other clients: add https://probativegrowth.com/mcp as a custom connector in the settings.

Other servers listed as Probative's

com.probativegrowth/legal-marketsanswers, 6 toolsverified in the MCP registry

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.