How to Get BUFF Gamma Doppler Prices

GET /v1/market/buff/latest returns separate current BUFF markets for Gamma Doppler Phase 1 through Phase 4 and Emerald. Each variant has phase-wide and float-range buckets with prices and active market counts.

Gamma Doppler variants should be addressed by their stable version: p1, p2, p3, p4, and emerald. Emerald remains its own market instead of being averaged into the four ordinary phases.

Current BUFF Gamma Doppler fields#

The dedicated BUFF response nests each variant under the base item's variants object. Every variant carries display_name, the full variant name, its stable version, and a buckets array.

Use the base bucket to read the whole phase:

• ask is the lowest active listing in USD.
• avg_ask is the average active listing ask.
• bid is the highest buy order.
• ask_volume counts active listings in the phase bucket.
• bid_volume counts active buy orders against the phase bucket.

Use a float bucket when the exact wear value belongs to a narrower BUFF market. The range includes float.min and excludes float.max. A bucket such as variant:emerald|float:0.00:0.01 therefore means both Emerald and that specific float range.

Read phase-wide or float-specific prices#

Fetch the complete BUFF range snapshot, select the base Gamma Doppler market_hash_name, and locate the variant by version. Choose its base bucket for a phase comparison. Match an exact float to a returned float bucket for a float-aware valuation.

The endpoint refreshes every 10 minutes. updated_at records BUFF's source update and collected_at records when cs2.sh fetched the bucket.

GET /v1/prices/latest also returns current per-source Gamma Doppler variants for cross-marketplace comparisons. It does not expose BUFF's range buckets or avg_ask; use the dedicated BUFF endpoint when those fields are required.

Applicable endpoints#

Reading a thin Emerald market#

• A low ask_volume makes the floor sensitive to one listing. Keep avg_ask and active counts beside the ask instead of treating the floor as a complete description of the book.
• bid_volume is the number of active buy orders for the bucket. It is not the quantity available at the single highest bid.
• A phase-wide bucket and a low-float bucket answer different questions. Mixing both in one phase table double-counts the variant and overstates its ordinary price.
• Use BUFF Gamma Doppler history to determine whether a current phase or float premium persisted.