AnchorGrid API

Construction documents. Structured for your software.

AnchorGrid extracts structured information from architectural drawings and construction specifications, so your applications and the AI workflows your developers configure can work with it as data.

Explore API Docs Try the Playground

Ready to integrate? Connect to the API

Drawing · sheet A-101

Structured data · Detect rooms

{
  "rooms_found": 12,
  "pages_analyzed": 1,
  "rooms": [
    {
      "id": "room_101",
      "page": 1,
      "bbox": {
        "x1": 165,
        "y1": 175,
        "x2": 561,
        "y2": 445
      },
      "confidence": 0.97,
      "class_label": "room",
      "room_number": "101",
      "label": "OPEN OFFICE"
    },
    {
      "id": "room_104",
      "page": 1,
      "bbox": {
        "x1": 561,
        "y1": 175,
        "x2": 741,
        "y2": 445
      },
      "confidence": 0.96,
      "class_label": "room",
      "room_number": "104",
      "label": "CONFERENCE"
    }
    // …
  ]
}

Illustrative Sample sheet from the AnchorGrid homepage. Output is trimmed and follows the documented response fields.

Who it's for

For teams building software on construction documents.

Send a PDF, choose an analysis, and get JSON back. What you build with it is up to your product and your team.

Construction software teams
Add drawing and specification data to estimating, takeoff, project management or review products.
In-house technology teams
Build internal tools that work across your firm's drawing sets and project manuals.
Teams building AI agents
Give an agent a tool that calls the REST API and returns structured results it can reason over.

Capabilities

Drawing intelligence and specification intelligence.

Every capability below is a documented endpoint. Each runs as a job and returns JSON.

Drawing intelligence

Find elements on architectural drawing pages, index a drawing set and pull out the schedules printed on it.

Specification intelligence

Read a specification's structure, then extract the full content of the sections you need.

How it fits your software

Upload, analyze, retrieve.

Three calls from your application. Authentication and parameters are covered in the docs.

01Upload a document
Send a drawing set or specification PDF. You get back a document ID that every analysis uses.
POST /v1/documents
02Start an analysis
Choose an analysis such as door detection or schedule extraction. The API accepts the job and returns a job ID.
POST /v1/drawings/…
03Retrieve the results
Check the job until it's complete and read the structured results, or, on eligible plans, have them sent to a webhook.
GET /v1/jobs/{job_id}

Connect to the API API reference

Output

Results your code can use directly.

Each analysis returns JSON with a consistent shape: what was found, where it is in the document, and how confident the model is where that applies.

Illustrative Trimmed from the documented example responses. Field names follow the documented schema; values are sample data.

POST /v1/drawings/classifyFull schema

{
  "pages_analyzed": 133,
  "by_drawing_type": {
    "FLOOR_PLAN": [1, 2, 3, 4],
    "ELEVATION": [5, 6, 7],
    "SCHEDULE": [12, 13]
  },
  "pages": [
    {
      "page_number": 1,
      "drawing_number": "A-101",
      "title": "FIRST FLOOR PLAN",
      "drawing_type": "FLOOR_PLAN",
      "division": {
        "code": "09",
        "name": "Finishes"
      },
      "scope": ["walls", "doors", "room labels"],
      "floor": "Level 1"
    }
  ]
}

Evaluate, then integrate

Try it by hand. Run it in software.

The Playground and the API use the same analyses. They serve different stages of your work.

Playground · manual evaluation

See how AnchorGrid reads your documents.

Upload a drawing or specification, choose an analysis and inspect the results.
No code or API key needed.
Best for checking results on your own documents before you build.

Try the Playground

API · production integrations

Let your software do the work.

Your application or AI agent sends each document and collects results automatically.
No one uploads files or clicks through the Playground for each request.
Requires an API key.

Connect to the API

Use cases

What teams build with the API.

AnchorGrid supplies the data. Your application and your team decide what to do with it. All use cases

Not building software? Revision Impact Analysis and Scope Conflict Analysis are ready-to-use tools for construction teams.

Explore Workflow Tools

Start with the docs.

Run a quick test in the Playground, then connect your software when you're ready.