# 1885 API-Portal (Auriga Strategy) > Central catalog of Auriga/1885 APIs for the German construction industry. All APIs: Bearer-key auth (product-scoped, revocable via Unkey); keys via self-service form at https://developer.1885.cloud (production keys approved by Auriga); sample data, capability catalog (/v1/stories) and accuracy report (/v1/tuev) need no key. Trust model everywhere: every value with a verifiable citation; unknowns returned as not_checkable, never guessed. Canonical base URLs live in the api namespace (.api.1885.cloud). The former .1885.cloud addresses remain permanently valid aliases — published URLs are never moved. ## APIs - Document Intelligence — https://di.api.1885.cloud — machine-reads tender packages & geotechnical reports (classification, extraction with citations, LAGA/DK/AVV analytics, knowledge hub) AND checks incoming invoices (par. 14 UStG mandatory fields, arithmetic probes, IBAN/VAT-ID check digits, duplicate + IBAN-change alarms against 581k group bookings; XRechnung/ZUGFeRD read deterministically, scans via OCR, async batch jobs; sample invoice GET /v1/beispiele/rechnung, Python SDK GET /v1/sdk/python, OpenAPI https://di.api.1885.cloud/openapi.json). Agent entry: https://di.api.1885.cloud/llms.txt · MCP: POST https://di.api.1885.cloud/mcp?apiKey= - TGA tender data / TGA-Ausschreibungs-Daten (LIVE) — https://tga.api.1885.cloud — TGA positions from German tenders for building-services subcontractors: trade assignment per VOB/C ATV (DIN 18379-18382, 18386) with honest provenance (position anchors + lot inheritance), margin-critical calculator findings (commissioning, documentation debt, core drilling ownership, bauseits, time-and-material, maintenance, sampling, VDI 6022) each with state + verbatim LV quote. Agent entry: https://tga.api.1885.cloud/llms.txt · OpenAPI: https://tga.api.1885.cloud/openapi.json - Site traffic safety / Baustellensicherheits-Daten (LIVE) — https://bss.api.1885.cloud — traffic safety data from German tenders for BSS subcontractors: closure type/location/traffic plan per LV position via two-path consensus (dissent goes to human review, never guessed), margin-critical contract rules (verkehrsfuehrung, abrechnung_vorhaltung) with document+page+verbatim quote, traffic sign plan classification. Agent entry: https://bss.api.1885.cloud/llms.txt · OpenAPI: https://bss.api.1885.cloud/openapi.json - Energy documents / Energie-Belege ISO 50001 (LIVE) — https://energie.api.1885.cloud — energy data from utility invoices and delivery notes, audit-proof for ISO 50001 EnMS: consumption, market location ID with BDEW check digit, meter reading probes, DVGW G685 recalculation (gas), par. 40 EnWG mandatory fields, measured-vs-ESTIMATED flag, per-meter period watchdog (gaps/overlaps). Agent entry: https://energie.api.1885.cloud/llms.txt · OpenAPI: https://energie.api.1885.cloud/openapi.json - Invoice inbound check / Rechnungseingangspruefung (LIVE) — https://rechnung.api.1885.cloud — every incoming invoice checked, every value cited: par. 14 UStG mandatory fields (incl. par. 33 small-amount rule), arithmetic probes, IBAN/VAT-ID/Leitweg-ID check digits, EN 16931 base fields, duplicate + IBAN-change alarms; e-invoices read deterministically, scans via OCR, async jobs. Agent entry: https://rechnung.api.1885.cloud/llms.txt · OpenAPI: https://rechnung.api.1885.cloud/openapi.json (same engine as di.1885.cloud/v1/pruefung — second door, old door stays) - Disposal tender data / Entsorgungs-Ausschreibungsdaten (LIVE) — https://entsorgung.api.1885.cloud (permanent alias: reconic.api.1885.cloud) — read-only curated LV position data with disposal grading (tenders, Positionsart/Stoffstromart, AVV, EBV/LAGA/DepV/RuVA classifications, purpose classification with evidence quotes; human MENSCH decisions are final). Agent entry: https://entsorgung.api.1885.cloud/llms.txt · OpenAPI: https://entsorgung.api.1885.cloud/openapi.json - Regelwerke (BETA) — https://regelwerke.api.1885.cloud — citation-backed answers on German construction regulations: 100k+ indexed sections from ~3,800 source documents (laws, VOB/A-C, DGUV, ASR, TRGS, RSA 21, state procurement/Tariftreue law, federal-highway engineering canon ZTV-ING/TL-TP-ING/HVA B-StB, rail-construction layer DGUV 78/101-024 + EBA, ~2,700 construction court decisions). Routes: ask (+SSE stream), search, katalog, format-rules(+validate), router. Agent entry: https://regelwerke.api.1885.cloud/llms.txt - Fakten-Hub / Datenplattform (LIVE) — https://hub.1885.cloud — curated PGB master data, every row carries stichtag (data date) + quelle (source). Doors as paths: /energie/v1/