Cogni

situational

MCP memory server that connects facts in an entity graph so agents reason over what they remember.

Visit getcogni.io →Add to kit Open in Noemium

ledger entry · observed by @whysanesanders

Exposes memory tools over MCP with deterministic graph traversal rather than pure vector similarity, which helps with multi-hop questions that share no vocabulary with the answer. The free tier is genuinely useful, and it works with any model. Hosted-only for now; self-hosted deployments are on the roadmap.

Strengths

Deterministic entity-graph traversal reaches connected facts a vector search misses.
Works with any model over MCP; no model lock-in.
Free personal tier is genuinely useful.
No vector database or separate model to run.

Known limitations

Hosted service; memory text leaves your machine unless you wait for the self-hosted tier.
Effectiveness depends on the agent consistently calling recall before answering.
Pro and team pricing is not published transparently on the site.

Use it when

Agents that need multi-hop reasoning across disconnected facts.
Users who want persistent memory across sessions and clients.

Skip it when

You cannot use a hosted service; self-hosted deployment is still on the roadmap.
Your agent will not consistently call recall before answering.
Published Pro/Team pricing is required before you buy.

Buy-check

·Price — freemium, Free personal tier; Pro for higher limits and graph inspection; Team/Enterprise custom as of 2026-08-19. Open the pricing page, not a screenshot.
·Free tier — Free tier exists — burn it first.
·Cancel fallout — What happens to your data/projects on cancel — check the ToS, not the FAQ.
·Seat math — Per-seat pricing multiplies quietly. Count seats before the annual plan.
·Who skips it — Also skipped when: You cannot use a hosted service; self-hosted deployment is still on the roadmap.; Your agent will not consistently call recall before answering..

Price trailchangelog →

No price move in this repo yet.

Facts

pricing: freemium¹
price note: Free personal tier; Pro for higher limits and graph inspection; Team/Enterprise custom
free tier: yes
open source: no
api: yes
self-host: no
category: agents
evidence: source-verified