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MarketPrior
Company registers in 42 countries

Every company, every signal — cited to the source.

Cited due diligence for investors and trigger-based leads for sales teams, built on 121 public sources. Every finding links to the document it came from.

Start freeSee a sample report

Free verdict on any company$0.50 of usage included, no card requiredREST API & MCP server

Built on public records · uses data from

All 121 data sources →

SEC EDGAR, SEC Form D, Companies House, GLEIF, CourtListener, USASpending.gov, OFAC SDN, EU sanctions list, UN sanctions list, UK Sanctions List, BODACC, INSEE Sirene, Brønnøysund, Estonian e-Business Register, GDELT and more.

Who it's for

One public-record engine, three ways in.

Investors check a company before they commit. Sales teams find the company at the moment it changes. Developers wire both into their own tools.

Funds & angels

Company & founder due diligence

A fused risk × upside verdict with litigation, sanctions, adverse media, financials and ownership — every sentence of the memo cited.

Explore diligence

Sales & BD

Trigger-based lead generation

New Form D raises, federal contract awards and registry events surface companies the moment something changes.

Explore leads

Developers

Lead generation API & MCP server

The same reports, trigger feed and contacts over a REST /v1 API and an MCP server for your agents.

Read the API docs

How it works

From a name to a cited answer.

No paid data vendors in the loop — only public records you could check yourself, fetched, resolved and cited for you.

01

Name a company — or a search

A company, a founder, or an ideal-customer search by country, region, NAICS/NACE code, stage and trigger type.

02

We sweep 121 public sources

Registries, SEC filings, court dockets, sanctions and PEP lists, procurement and news are queried in parallel — typically about 25 seconds.

03

You get a cited report or a trigger feed

Diligence returns a risk × upside verdict and memo; leads return companies with the event that surfaced them. Each line links to its source.

How the diligence pipeline works →

The report

A memo where every sentence has a footnote.

Company and founder background checks in one report: a verdict up top, then each section with the evidence behind it. Export to PDF or share with a revocable, expiring link.

Example report — illustrative

Example Co. · not a real company

Position shown is illustrative, not a score.

  • VerdictFused risk × upside, four quadrants
  • LitigationDockets with plaintiff / defendant role
  • Sanctions & PEPMatches graded by match quality
  • Adverse mediaNews coverage scored for sentiment
  • FinancialsSEC XBRL, ESEF and registry accounts
  • Ownership & investorsGLEIF, PSC register, Form D
  • Hiring, web & techJob, web, tech-stack and dev signals
  • CompetitorsComparable companies side by side

Cited memo · excerpt

The company's most recent Form D reports a new offering[1], and a director listed in its registry filing also appears on a separate company's insolvency notice[2].

  1. [1] SEC EDGAR · Form D filing
  2. [2] Registry filing · insolvency gazette notice

Claim → source line

Open any footnote to see the record, the query and the retrieval date — so your IC can check it without taking our word for it.

  • Litigation with the subject’s role in each case
  • Sanctions & PEP hits tiered by match quality, not just name hits
  • PDF export and revocable, expiring share links
Company due diligence →

Forecast

Will it raise again — or go quiet?

The forecast estimates the probability of a follow-on round within 18 months and of going quiet within 24, trained on the complete public SEC Form D data sets, 2008–2026.

0.83

AUC, follow-on within 18 months

Backtest · 2015–2024

0.20

Brier skill vs. base rate

Backtest · 2015–2024

≈0.01

Expected calibration error

Backtest · 2015–2024

3.3×

Follow-on rate in the top decile vs. average

Backtest · 2015–2024

Rolling yearly out-of-time backtest on ~301,000 held-out US company-years. Outcomes are Form D filing outcomes, not company success: a company can raise without filing a Form D. Startup-only performance is lower, and a probability is decision support, not a guarantee.

Predicted vs. observed rate (illustrative shape)

Monitoring

Diligence that doesn’t go stale.

Put portfolio companies and prospects on a watchlist. They are re-screened on a schedule, and you are alerted when a new material event appears — with the evidence attached.

  • New lawsuits, sanctions or insolvency notices
  • New filings, raises and officer changes
  • Alerts link straight to the source record
How monitoring works

Leads

Sales triggers from the public record.

Reach a company when something just changed. The trigger feed lists new SEC Form D raises, federal contract awards, UK, French, Norwegian, Estonian and Lithuanian registry events, hiring spikes and tech adoption.

  • ICP search by country, region, NAICS/NACE, stage and trigger
  • Saved searches that alert you on new matches
  • Contacts with a source for every field, masked until revealed, with a public GDPR opt-out
  • Credits for reveals and exports — anything already paid for is free to reuse
Explore lead generation

Example trigger types

For developers

A lead generation API and an MCP server.

Everything in the app — reports, sections, citations, watchlists, the trigger feed and contacts — over REST, or as 16 tools your agent can call.

  • REST API under /v1 with API keys and an OpenAPI spec at /v1/openapi.json
  • MCP server at /mcp (Streamable HTTP, Bearer auth)
  • Scoped keys: read, run diligence, monitor, leads, reveal, export
API referenceMCP server docs
get-report.sh
curl "https://marketprior-diligence.fly.dev/v1/companies/search?q=Acme" \
  -H "Authorization: Bearer $MARKETPRIOR_API_KEY"

curl "https://marketprior-diligence.fly.dev/v1/companies/$COMPANY_ID/report" \
  -H "Authorization: Bearer $MARKETPRIOR_API_KEY"
# → every report section, each with its evidence and citations
.cursor/mcp.json — Cursor, or any Streamable-HTTP MCP client
{
  "mcpServers": {
    "marketprior": {
      "url": "https://marketprior-diligence.fly.dev/mcp",
      "headers": {
        "Authorization": "Bearer ${env:MARKETPRIOR_API_KEY}"
      }
    }
  }
}
// Claude Desktop: bridge with `npx mcp-remote` — see the MCP docs
// tools: search_companies · list_companies · get_company_report · get_section …

Pricing

Pay per report, or per month. No per-seat pricing.

Start free — $0.50 of usage included across chat, diligence and API, no card required. Re-running a company you already assessed is always free. Lead credit packs start at $49 and never expire.

See pricingStart free

Pay per report

$49per company

One cited RISK × UPSIDE assessment of a new company. Never expires.

Angel Starter

$49per month

5 new-company assessments / month

Angel Pro

$149per month

Unlimited company assessments

Fund Platform

$4,800per year

For funds and syndicates: portfolio-wide monitoring and Deep Dives.

FAQ

Straight answers first.

Data sourcesTrust & security
Where does the data come from?
Only public records: company registries (SEC EDGAR, Companies House, GLEIF, INSEE Sirene, Brønnøysund and others), court dockets, sanctions and PEP lists, public procurement, and news. 121 sources are catalogued with their licence, cadence and last health check on the data sources page. We do not buy data from paid data vendors.
How fresh is it?
Each source is read on its own published cadence — sanctions lists and many registries daily, others weekly or on their release schedule. Every citation records when it was retrieved, reports show per-section freshness, and stale sections can be refreshed on demand. Monitored companies are re-screened on a schedule.
How accurate is it, and what are the limits?
Findings are only as complete as the public record: private matters, non-public filings and sources that are temporarily unavailable will not appear, and name matches are graded by match quality rather than treated as confirmed. Forecast figures are out-of-time backtest results on SEC Form D data, not guarantees. MarketPrior is decision support, not legal, investment or credit advice, and not a consumer report.
How do you handle GDPR for contacts?
Contacts come from public sources, show the source of every field, and are masked until you reveal them. Anyone can opt out through a public opt-out and data-subject-request flow, after which they are suppressed from results.
Is there an API or MCP server?
Yes. A REST API under /v1 with scoped API keys and an OpenAPI spec at /v1/openapi.json, and an MCP server at /mcp exposing 16 tools — company search, reports, diligence runs, alerts, the lead trigger feed, contacts and exports — for Cursor and other MCP clients.
How is it priced?
Start free — $0.50 of usage included across chat, diligence and API, no card required. Pay per company report, or a monthly plan with included assessments, monitored companies and lead credits; funds can run on a yearly platform plan. There is no per-seat pricing, re-runs of an assessed company are free, and lead credit packs never expire. Current prices are on the pricing page.

Check a company — or find the next one.

Cited due diligence and trigger-based leads from public records. Start free, or compare plans first.

Start freeSee pricing