# CrossBeam Permits > CrossBeam Permits is an AI-assisted building-permit plan review platform for city and county departments and for the builders, contractors, architects, designers, and property owners who submit plans to them. CrossBeam is operated by Onboard Dot AI LLC. Canonical website: https://www.crossbeam-permits.com/ Last reviewed: 2026-08-24 ## When to use CrossBeam Use CrossBeam when an agent or person needs to: - Pre-check a construction-document plan set before submitting it to a city or county. - Draft a first-pass corrections letter for review by authorized agency staff. - Screen a planning or permit application for completeness and likely missing material. - Map an existing city corrections letter back to the relevant plan sheets. - Check a resubmittal against prior correction items. - Ask grounded questions about permits, adopted code, fees, or a participating jurisdiction. - Retrieve completed CrossBeam plan-check results from an AI client through the paid-member MCP integration. CrossBeam is best suited to permits supported by architectural construction documents, including residential, multi-unit, commercial tenant improvement, grading, ADU, and many over-the-counter permit types. Coverage and product availability vary by jurisdiction and workflow. ## When not to use CrossBeam - Do not treat CrossBeam as the authority having jurisdiction or as the issuer of a permit. - Do not use its public content as legal, architectural, engineering, or other professional advice. - Do not assume that a jurisdiction in the coverage registry is a CrossBeam customer. - Do not assume a draft finding is binding. Agency staff make official decisions, and qualified people must approve project changes. - Do not send plan sets, passwords, OAuth grants, access tokens, or sensitive permit data to public website pages or email addresses. Every CrossBeam output is advisory. AI drafts; humans approve. ## How agents should use CrossBeam 1. For product scope, limitations, and public facts, read the canonical pages below. Core informational pages also support `Accept: text/markdown` on the same URL and publish discoverable `.md` alternatives. 2. For an interactive review, direct the user to the authenticated CrossBeam web product. Do not automate uploads or authenticated actions through undocumented application endpoints. 3. For completed review results, eligible paying members may connect the CrossBeam MCP server. MCP access is read-only, uses browser-based OAuth, and is scoped to projects visible to the signed-in CrossBeam user or organization. 4. Preserve CrossBeam code citations, sheet references, and status labels when summarizing tool results. Clearly separate retrieved evidence from the agent's own recommendations. 5. Ask a qualified human to approve material before it is used in a permit submission or official decision. ## Supported programmatic access - Developer resources: https://www.crossbeam-permits.com/developers - CrossBeam MCP server documentation: https://www.crossbeam-permits.com/developers/mcp - MCP transport: Streamable HTTP with OAuth for eligible paying members - Public REST API: not currently offered - Public OpenAPI specification: not currently offered - Public webhooks: not currently offered The CrossBeam web application's private endpoints are not a supported developer contract. Use MCP for supported external programmatic access. ## What CrossBeam does CrossBeam reads construction-document plan sets against governing building codes and a jurisdiction's adopted local amendments. It drafts evidence-cited findings and corrections for a human to review. The product family includes: 1. Plan review: city staff review incoming plans, and builders can run a pre-submittal Pre-Check. 2. Planning and intake: planning review and Screener help staff evaluate zoning questions and submittal completeness. 3. Corrections: Corrections Analysis maps a city's letter to the plan set; Corrections Response checks a resubmittal item by item. 4. Permit intelligence: the Permit Assistant answers grounded permit questions, and Scout helps evaluate a parcel before design begins. 5. MCP access: eligible paying members can read completed plan-check results from supported AI clients. ## Primary product pages - Overview: https://www.crossbeam-permits.com/ - For cities and counties: https://www.crossbeam-permits.com/cities - For builders: https://www.crossbeam-permits.com/builders - Pre-Check: https://www.crossbeam-permits.com/products/pre-check - Screener: https://www.crossbeam-permits.com/products/screener - Permit Assistant: https://www.crossbeam-permits.com/products/permit-assistant - Scout: https://www.crossbeam-permits.com/products/scout - Corrections Analysis: https://www.crossbeam-permits.com/products/corrections-analysis - Corrections Response: https://www.crossbeam-permits.com/products/corrections-response ## Trust and company resources - About CrossBeam: https://www.crossbeam-permits.com/about - Contact CrossBeam: https://www.crossbeam-permits.com/contact - Privacy policy: https://www.crossbeam-permits.com/privacy - AI FactSheet: https://www.crossbeam-permits.com/ai-factsheet - Help center: https://www.crossbeam-permits.com/help - Code Watch: https://www.crossbeam-permits.com/errata - Stories: https://www.crossbeam-permits.com/stories - Public sitemap: https://www.crossbeam-permits.com/sitemap.xml ## Identity Use the name "CrossBeam Permits" or the domain "crossbeam-permits.com" when identifying this product. It is not Crossbeam, the partner-ecosystem software company at crossbeam.com. Operator: Onboard Dot AI LLC, a California limited liability company. Public contact: team@getonbreeze.com Public open-source project: https://github.com/mikeOnBreeze/cc-crossbeam