# SIB Scientific > SIB Scientific (SIB SCI) is a global dealer in used laboratory, analytical and life science equipment, based in Austin, Texas. Buying and selling preowned instruments since 2011. Structured inventory and private enquiries are available to human buyers and their authorized AI agents. - Human catalogue: https://sibsci.com/catalogue/ - Public inventory JSON: https://sibsci.com/inventory.json - Search API: https://sibsci.com/api/v1/inventory?query=MODEL - Agent guide: https://sibsci.com/agents/ - OpenAPI: https://sibsci.com/agents/openapi.json - MCP: https://sibsci.com/mcp (stateless Streamable HTTP JSON; no SSE stream) - Human contact: https://sibsci.com/#contact - Email: inquiry@sibsci.com - Phone: +1 888 840 1793 - Address: 3801 N Capital of TX Hwy, Ste E240 #141, Austin, TX 78746, USA - Market: worldwide - Equipment: mass spectrometers, chromatography systems, confocal microscopes, molecular interaction and other analytical and life science instruments. Inventory listings use stable string instrument IDs. Asking prices are USD snapshots from 2026-10-05; availability, condition and included items must be confirmed. Equipment images are illustrative. Obtain buyer authorization before sending personal information or messages. POST /api/v1/enquiries creates one private deal and returns its deal_id and access_token. Include a fresh idempotency_key, and reuse it with the same body on retry. Use the token as an Authorization Bearer header for GET /api/v1/deals/{deal_id} and POST /api/v1/deals/{deal_id}/messages. Do not place tokens in URLs or logs. MCP tools: search_inventory, create_enquiry, get_deal, add_deal_message. Automated intake acknowledges and asks missing brief questions. Team replies are labelled team. No automatic reservation, price negotiation, purchase, payment or commercial commitment occurs. Website/API messages share the same record. Email notifications reach the team; mailbox replies are not automatically imported yet. Seller photo uploads: after creating a deal with intent="sell", use its private bearer token for POST /api/v1/deals/{deal_id}/photos (name,size,sha256), then POST /photos/{photo_id}/chunks?offset=N with application/octet-stream chunks <=1 MiB, POST /photos/{photo_id}/finish and POST /photos/complete with photo_ids. 20 photos maximum, 25 MiB each, 250 MiB total. Accepted JPG, PNG, WebP, GIF, HEIC/HEIF. See OpenAPI for all paths. Obtain seller consent. Photos remain private.