Plainfold

Guides, templates & small tools

Small, honest data tools
for people and AI agents

Plain on purpose, never boring.

Plainfold builds focused tools on official public data. AI agents can find them, run them and pay per result through MCP. People can use them too, with no code needed.

See the toolsConnect an agentllms.txt

Data tools

Tools for agents and people

Each tool runs on Apify. You pay only for what you use, and there's no subscription.

SAM.gov Contract Opportunities

$0.002 per result + $0.002 per run

Search and monitor U.S. federal contract opportunities from SAM.gov's official daily data extract: RFPs, solicitations, sources sought and award notices.

  • Returns federal contract opportunities as clean JSON, one row per notice, from SAM.gov's official nightly public extract (not scraped).
  • Filters by keyword, NAICS, PSC, set-aside (small business, 8(a), HUBZone, SDVOSB, WOSB), agency, state, posted date and deadline.
  • Keyword search is relevance-ranked and ignores the FAR/DFARS boilerplate that every defense notice repeats.

Use it for: Finding federal contracts to bid on, daily bid alerts, market research by NAICS/PSC code, and award notices (who won what, for how much).

MCP URL:
https://mcp.apify.com/?tools=plainfold/sam-gov-contract-opportunities

Apify page & docsSetup

US Business Entity Check

$0.004 per company found, $0.0005 per no-match

Check whether a US company is registered and active, using official state business-registry open data (New York, Colorado, Oregon, Connecticut, Texas).

  • Give it company names; for each one it returns a verdict (active, inactive, status unclear, not found) and the matching registrations.
  • Each registration includes legal name, registry ID, entity type, status, good standing, jurisdiction, formation date and business address.
  • Company records only: it never returns officers, agents, owners or any other personal data.

Use it for: Vendor and supplier checks before paying, KYB onboarding, lead qualification, and confirming that a company named in a contract, invoice or email actually exists.

MCP URL:
https://mcp.apify.com/?tools=plainfold/business-entity-check

Apify page & docsSetup

Coming soon: Company Jobs & Hiring Signals; SEC Company Financials.

For AI agents

Connect in a minute

  1. Add this remote MCP server to Claude, Cursor, VS Code or any MCP client:
    https://mcp.apify.com/?tools=plainfold/sam-gov-contract-opportunities,plainfold/business-entity-check
  2. Sign in with a free Apify account (OAuth), or send Authorization: Bearer YOUR_APIFY_TOKEN.
  3. Ask your question. Runs are billed per result at the prices above. Agents without an account can pay per use with x402 or Skyfire through Apify.

Client-by-client setup, example calls and registry entries: github.com/plainfold/plainfold-mcp. Listed in the official MCP Registry as io.github.Plainfold/*.

Guides & templates

Practical guides

Spain Arrival Kit: Your First 90 Days in Spain

$27

A calm, step-by-step guide to the NIE, padrón, TIE, bank account, Social Security, autónomo and the Beckham regime, for digital nomad, non-lucrative and student visa holders. 30-page PDF guide plus Notion and Excel trackers, with every rule linked to its official Spanish government source.

Get it on Gumroad