Make No Mistakes

Public data, on one schema, with the gaps written down.

We turn scattered public sources into clean APIs and datasets: building permits from US city open-data portals and job postings from the public job-board APIs of nine applicant tracking systems. Pay per result, no subscription, and every known limit is in the docs.

APIs

Run them on Apify from the web, the API, Python, n8n, Make, Postman or any MCP client.

US Building Permits API

16 US cities$0.008 per permitDelta mode

Newly issued building permits from Austin, San Antonio, New York City, Los Angeles, Chicago, Philadelphia, Boston, Seattle, San Francisco, Cincinnati, Baton Rouge, Washington DC, Denver, Nashville, Raleigh and Louisville, normalized into one record: address, ZIP, work description, valuation and contractor. Contractor phone numbers are published by Austin and Raleigh only, and we say so.

Multi-ATS Job Board API

9 ATS platforms$0.004 per jobAuto-detects the ATS

Every open role from a company's careers feed on Greenhouse, Lever, Ashby, Workday, SmartRecruiters, Workable, Recruitee, Personio or Rippling, on one schema. Give it company names or domains and it finds the board itself (about 90% of companies on our test set).

Company ATS Detector

Free9 ATS platforms

Which job board does a company use? Paste domains or company names and get the platform, the board URL, the public API endpoint and the number of open roles.

Open datasets

Free snapshots under CC BY 4.0. For fresh data, run the APIs above.

US building permits, 16 cities, 30 days

43,119 permitsCSV + ParquetSep 2026

Tech job postings across 9 ATS platforms

7,516 jobs284 companiesCSV + Parquet

Use from an AI agent (MCP)

All three tools are available as MCP tools through Apify's MCP server. Bring your own Apify token.

https://makenomistakesllc.com/mcp?tools=make_no_mistakes/us-building-permits-scraper,make_no_mistakes/multi-ats-job-board-api,make_no_mistakes/company-ats-detector
Authorization: Bearer <your Apify API token>

That endpoint forwards to mcp.apify.com unchanged; you can also call Apify's server directly with the same ?tools= list. Config examples for Claude, Cursor and other clients are in the GitHub repo.

How we work