upsert

DE//AGENT currently lists 2 resources under upsert: 1 skill, 1 pattern. Everything below is derived from the live registry — counts, capabilities, verification state and security posture come from the curated records, never from marketing copy.

Documented learning objectives across these resources:

• Order change events deterministically — via CDC Merge Designer
• Handle deletes (tombstones) without losing history — via CDC Merge Designer
• Make the merge idempotent under replay — via CDC Merge Designer

These resources map to stage: Streaming (2). Follow the four-phase roadmap to place this topic inside a progression instead of learning it in isolation.

Every entry, its shape and its trust state — sorted by the registry's composite score. This table is the honest version of a marketing comparison: no sponsored placements, no unverifiable claims.

How scores are computed: source quality score.

Highest composite score first:

1. CDC Merge Designer score 39.5 — advanced
2. Streaming Dedup and Upsert score 31.75 — advanced

Scores rank provenance, completeness and trust — read how verification works before adopting anything.

Reach for these with production experience: CDC Merge Designer, Streaming Dedup and Upsert.

Security-flagged entries: CDC Merge Designer (1 flag), Streaming Dedup and Upsert (2 flags). Flags mean the record declares capabilities like credential use or write access — read the security posture on each page before connecting.

Known limits: Pure append-only event log with no dedup need (Streaming Dedup and Upsert)

• CDC Merge Designer — Produces a MERGE (or Delta/Iceberg merge) that applies inserts, updates and deletes from a CDC stream correctly, including out-of-order events and tombstones. details

Real install commands from the registry — read the source before running any of them:

npx de-agent-platform add cdc-merge-designer

CDC Merge Designer — review first

Study path: the roadmap places this topic in a progression · the scoring model explains the numbers · the trust rule catalog shows every security check these entries passed through.