Quietforge Family Tree Chart Layout Engine

x402

Quietforge Family Tree Chart Layout Engine is a paid API for AI agents from qf-api.quietforge-studio.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-11).

Generates verified family tree chart layouts (descendant, ancestor, or hourglass) from structured people/families data or a GEDCOM file, returning positioned node/edge JSON or print-ready poster PDFs.

Price / call$0.02

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StatusUnknown

How this service works

Pay-per-call document conversion, PDF text extraction, headless-browser rendering of a URL or HTML to PNG / JPEG / PDF, a health-probed directory of x402 pay-per-call endpoints, a sudoku generator (solver-verified, technique-graded puzzles as JSON or a print-ready A4/Letter book), a book typesetter (prose manuscript to a KDP-ready interior PDF + editable docx), a crossword generator (verified freeform grid from your clue/answer pairs as JSON or print-ready PDFs), a family tree chart layout engine (descendant / ancestor / hourglass charts from people+families JSON or a GEDCOM file, as verified layout JSON or print-ready poster and tiled PDFs), and a dataset quality audit tool (duplicates, missing values, type consistency, class imbalance, numeric outliers and PII-pattern counts for a CSV/JSON dataset, as JSON or a one-page PDF summary). Payment: x402 (USDC on Base). No signup, no API key.

Output

Returns a JSON object containing positioned nodes (id, name, dates, x/y coordinates, width/height, generation), connector edges (from/to with SVG-style point arrays and kind), overall chart width/height, generation count, couple count, people count, root name, title, a 'verified' boolean, and any warnings. For PDF routes, returns downloadable print-ready files in requested page sizes.

Example use cases

GEDCOM export to printable poster

“I just exported my family tree from FamilySearch as a GEDCOM file — can you turn it into a print-ready descendant chart poster? Use the earliest ancestor as root, go 6 generations, classic style, title it 'The Henderson Family Legacy', and give me both 24x36 and A3 PDFs.”

Ancestor pedigree from structured data

“I have a list of my grandparents, great-grandparents and their parents with birth and death years — can you generate an ancestor pedigree chart going back 4 generations from my grandfather John Murphy (id: P1), and return the node layout JSON so I can inspect the positions before printing?”

Hourglass chart for family reunion

“We're printing a family reunion banner and need a hourglass chart centered on my parents showing 3 generations up (ancestors) and 3 generations down (descendants). I'll give you the people and families as JSON — can you produce a letter-size PDF in elegant serif style with the title 'The Kowalski Family Reunion 2025'?”

Technical details

Endpoint

POSThttps://qf-api.quietforge-studio.workers.dev/v1/familytree?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need to compute a verified, positioned family tree chart layout from genealogy data (structured JSON or a GEDCOM file from Ancestry, FamilySearch, MyHeritage, or Gramps) and want either raw layout JSON for custom rendering or print-ready PDFs in multiple paper sizes. It is especially useful for genealogy applications, family reunion materials, or KDP/print publishing workflows where layout correctness is critical. It handles up to 400 people and supports descendant, ancestor, and hourglass chart orientations with a single pay-per-call USDC payment and no API key required.

Side effects

More than 400 people in the requested subtree — returns error indicating limit exceeded
GEDCOM file malformed or unsupported version — parse error returned
Fewer than 3 people provided — validation error on minItems
Conflicting family relationships (cycles in lineage) — may return warnings or error
Payment not completed via x402/USDC — 402 Payment Required response
Generation count outside 2–10 range — schema validation error
GEDCOM text exceeds 2,000,000 character limit — payload too large error

Input

Schema · Request body

Field	Type	Description
root	string	Person id the chart is built from; omitted = chosen automatically (earliest founder with the most descendants, or the person with the most ancestors)
chart	string	descendant (default): root and everyone below; ancestor: pedigree of the root; hourglass: both
sizes	array	PDF page sizes to build (PDF route only; default all four)
style	string	classic = sans-serif, elegant = serif (PDF only)
title	string	Printed above the chart
gedcom	string	Alternative to people/families: the text of a GEDCOM 5.5 / 5.5.1 / 7.0 file (as exported by Ancestry, FamilySearch, MyHeritage, Gramps); up to 2,000,000 characters and 400 people in the requested subtree
people	array	3-400 people; birth/death are years or GEDCOM-style dates ('abt 1850', '12 MAR 1901'); use with families
families	array	Couples and their children (GEDCOM FAM model); husband/wife optional, children a list of person ids
subtitle	string	Optional line under the title
generations	integer	Generations to include (default 5; hourglass counts each direction, max 5 each)
privatize_living	boolean	Show 'living' instead of dates for people with no death date born within the last 100 years (default true)

Output

Schema · Response

{
  "type": "json",
  "example": {
    "root": "I1",
    "chart": "descendant",
    "edges": [
      {
        "to": 2,
        "pts": [
          [
            240,
            356
          ],
          [
            240,
            388
          ],
          [
            130,
            388
          ],
          [
            130,
            420
          ]
        ],
        "from": 0,
        "kind": "child",
        "family": "F1"
      },
      "..."
    ],
    "nodes": [
      {
        "h": 41,
        "i": 0,
        "w": 100,
        "x": 1432,
        "y": 0,
        "id": "I1",
        "gen": 1,
        "full": "Tomás Alvarez",
        "name": "Tomás Alvarez",
        "role": "person",
        "dates": "1888 – 1961"
      },
      {
        "h": 41,
        "i": 1,
        "w": 100,
        "x": 1536,
        "y": 0,
        "id": "I2",
        "gen": 1,
        "name": "Rosa Delgado",
        "role": "spouse",
        "dates": "1892 – 1970"
      },
      "..."
    ],
    "title": "The Alvarez Family",
    "width": 3002,
    "height": 463,
    "people": 55,
    "couples": 21,
    "verified": true,
    "warnings": [],
    "root_name": "Tomás Alvarez",
    "elapsed_ms": 350,
    "widest_row": 25,
    "generations": 5
  }
}

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