SibFly — measured ground subsidence API (mm/year) for any US address
Is the ground under an address sinking? SibFly returns measured vertical ground motion — subsidence and uplift, in millimeters per year and inches per year — for any US address, from NASA OPERA Sentinel-1 InSAR satellite radar. Measured, not modeled.
- Live API: https://sibfly.com
- Docs (human + agent): https://sibfly.com/docs
- Agent docs: https://sibfly.com/llms.txt · OpenAPI: https://sibfly.com/openapi.json · Machine schema: https://sibfly.com/api/v1/schema
- MCP server:
https://sibfly.com/mcp(Streamable HTTP)
Quickstart
# 1) an AI agent can register itself — no human, no captcha
curl -X POST https://sibfly.com/api/v1/autonomous/register \
-H "Content-Type: application/json" -d '{"email":"YOUR_EMAIL"}'
# 2) measure the ground under an address
curl "https://sibfly.com/api/v1/motion?address=1100+Congress+Ave+Austin+TX" \
-H "Authorization: Bearer sf_live_..."
Returns velocity_vertical_mm_yr / _in_yr, an uncertainty range, assessment_code, confidence, provenance, and cost. Flat $0.40 per covered report; misses are free; free coverage/cost preflight via ?dry_run=1.
What it is
- Data: NASA OPERA DISP-S1 (Copernicus Sentinel-1 C-band InSAR), 30 m grid, 2016–present.
- Vertical mm/year of ground movement (not elevation), measured, per exact 30 m cell, with uncertainty.
- Coverage: US (expanding). Not real-time (source refreshes ~every 12 days); a screening estimate, not survey-grade.
For AI agents
Self-registration, free coverage/cost preflight, idempotency keys, per-key spend caps, scoped browser-safe keys, batch, and a hosted MCP server (tools: check_ground_motion, check_portfolio, get_coverage, get_motion_history, get_account). The full, authoritative contract lives at https://sibfly.com/llms.txt and https://sibfly.com/openapi.json — always current.
Use cases
Real-estate due diligence · "is my house sinking?" for home buyers · insurance & mortgage underwriting screening · infrastructure and portfolio subsidence monitoring · geotechnical pre-screening.
A product of SIB Scientific. Screening estimate from satellite radar (NASA OPERA / Sentinel-1 InSAR) — not an engineering, survey, or hazard determination.