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Sediment is an open-source, self-hosted evidence store for coding agents. Capture model calls, code changes, developer decisions, and check results on your infrastructure.
  • Evaluate agent work: compare models by recorded decisions, code retention, and automated checks.
  • Reuse context: give agents selected messages, tool calls, and results from a previous Session.
  • Build training datasets: export examples for fine-tuning, preference training, and reinforcement learning.

Quickstart

Capture your first agent session on one machine in about five minutes.

How it works

One evidence store for evaluation, agent context, and training datasets.

Evaluate agent work

Compare model outcomes, code retention, and rework.

Reuse context

Select captured evidence for an agent continuing a task.

Deploy

Gateway capture, forge webhooks, per-machine setup, and verification.

Build training datasets

DPO, SFT, diff-SFT, Recovery, and RLVR rows.