Edge / per-tenant SQLite for agents

Scores as of 2026-09-14 (43 days old; Depot marks scores stale after 30 days). The pick is still Depot's current editorial pick; it has not been re-reviewed since. Prices below carry their own dates.

Depot Pick

Turso · 8.22/10 for this job (curated estimate, high confidence)

pricePerf + dx for numerous small DBs. Distinct from serverless-db (Postgres) and agent-memory-kv (Redis).

Runner-up

Cloudflare Workers · 8.53/10

Scores higher than the pick on: Capability fit, Price / performance, Latency / reliability, Maturity / track record.

When not to use the pick

Want shared serverless Postgres branching — Neon; Auth+Storage suite — Supabase; sub-ms shared KV — Redis.

Lock-in / migration

The pick has lower stored lock-in risk than runner-up Cloudflare Workers (3.6 vs 5.5). Self-host fallback listed for this job: SQLite, sqlite-vec.

Sourced price (no comparable unit)

Pick: no sourced price in this job's unit (no_sourced_price).

No cheapest SKU (no_comparable_unit_for_job). No price was invented.

Free option

• Cloudflare D1 on Workers Free (free) — source, as of 2026-10-21
• SQLite (oss) — source, as of 2026-10-25
• sqlite-vec (oss) — source, as of 2026-10-25

Failure modes to watch

• Schema drift: Validate every tool call and every loaded table against the current schema. Quarantine mismatches instead of coercing them.
• Identity confusion: Bind every tool call to a user or tenant id. Refuse the call if that id changed mid-task. For a public bot, the operator owns the words the bot shows.
• Context overflow: If the input exceeds the window, say so and retrieve a narrower slice. Do not answer from a truncated head as if it were the whole source.
• Lost in the middle: Ask the agent to name the passage it used. Spot-check questions whose only support sits in the middle of the context, not only at the edges.
• Non-determinism: Run the task more than once and compare the end state, not a single transcript. Record the trial count next to any success rate you cite.
• Silent truncation: Tools must return whether the payload was truncated and how long the original was. Fail the task if the answer depends on the missing span.

Reported outcomes (submitted reports only)

This job: loading… JSON · reports never change scores · seed/test records excluded

Depot Pick (Turso) on this job: loading… JSON · reports never change scores · seed/test records excluded

Cite: Agent Provider Depot, Depot Pick for edge-sqlite-agent-db: turso, scores as of 2026-09-14. Agents: GET /api/decide?jtbd=edge-sqlite-agent-db