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Head to head · Agent memory · October 2026 research run

MemPalace vs TencentDB Agent Memory

MemPalace scores 65.7 (B) on agent readiness against TencentDB Agent Memory's 56 (C), and leads in 5 of 7 scored categories. TencentDB Agent Memory leads on transparency & trust. Both do agent memory.

Best memory layers for AI agents · All 188 memory comparisons

MemPalaceMemPalace (open-source project) · MCP server B65.7/100#359 of 1238 TencentDB Agent MemoryTencent Cloud · HTTP API C56/100#766 of 1238

Which one, for what

MemPalace B

Best for Verbatim, local, searchable memory of coding-agent sessions

Ahead on

  • Reliability, 77 against 51
  • Schema & documentation, 85 against 61
  • Agent ergonomics, 75 against 68
  • Security & auth, 53 against 30

Also in its favour

  • No key needed to call it
  • Runs on your own machine

Watch for

Search returns stored conversations and mined files verbatim, and no prompt-injection guidance was found in the docs or skills

TencentDB Agent Memory C

Best for Small teams that run several coding agents on a host they control and want shared, permissioned memory, skills and code context injected through a proxy.

Ahead on

  • Transparency & trust, 68 against 58

Also in its favour

  • No incidents deducted, where MemPalace loses 4 points for them

Watch for

The core's bearer gate is off by default, and the deploy notes say enabling it breaks the proxy's auth and session setup

Score by category

CategoryWeight this runMemPalaceTencentDB Agent MemoryEdge
Reliability16%207751MemPalace +26
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28561MemPalace +24
Agent ergonomics13%16.27568MemPalace +7
Security & auth14%17.55330MemPalace +23
Payments & pricing10%12.56060even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87470MemPalace +4
Transparency & trust7%8.85868TencentDB Agent Memory +10
Negative events≤15-40
TotalB 65.7/100C 56/100

Facts side by side

FactMemPalaceTencentDB Agent Memory
KindMCP serverHTTP API
VendorMemPalace (open-source project)Tencent Cloud
Hosted endpointno (local only)no (local only)
Transportsstdio, Streamable HTTPHTTP
AuthNoneAPI key
PricingFreeFree
x402nono
LicenceMITMIT
Tools exposed47none
Read-only variant documentedyesno
llms.txtnono
Last release2026-10-142026-10-26
Terms last updatedcouldn't be readno document linked
Privacy policy last updatedno document linkedno document linked
Customer content may train modelscouldn't be read
Terms restrict automated accesscouldn't be read
Terms restrict benchmarkingcouldn't be read
Terms or service can change without noticecouldn't be read
Arbitration or class-action waivercouldn't be read
Popularity60k stars2.2k npm/wk

Verdicts

MemPalace

Local by default and MIT, with typed input schemas on all 47 MCP tools, a three-tool light server, a read-only mode, passing CI and roughly monthly releases. Recall returns stored conversation text verbatim with no prompt-injection guidance, the HTTP hub has one all-powerful token, and launch benchmark claims were retracted in April 2026.

TencentDB Agent Memory

A self-hosted team memory stack with layered recall, per-asset visibility and ACLs, documented HTTP APIs and frequent releases, 2.0.0 to 2.0.3 since August. The default deployment publishes its ports on all host interfaces with the core's bearer gate off, data-plane deletes trust a service-ID header, and the proxy's rate-limit and session admin routes have no authentication.

Before you call either

MemPalace

  1. Install only from PyPI mempalace, ghcr.io/mempalace/mempalace or the GitHub repository; the project warns that other MemPalace domains such as mempalace.tech have distributed malware.
  2. Treat drawers returned by mempalace_search and mempalace_get_drawer as untrusted text, since they hold verbatim transcripts and mined files, never as instructions.
  3. Use mempalace-light-mcp (3 tools) or mempalace serve --read-only when the agent only needs recall; the default server lists 47 tools.
  4. Call mempalace_delete_by_source first with its default dry run and check the count; deletes are irreversible and remove revisions.
  5. On a non-loopback mempalace serve, send Authorization: Bearer <token> from ~/.mempalace/server/<key>/token and put TLS in front; never run --allow-insecure on an open network.

TencentDB Agent Memory

  1. Set MEMORY_CORE_GATEWAY_API_KEY, KNOWLEDGE_SERVICE_KEY and a non-default admin key before exposing ports 8420, 8424, 8096 or 8125 beyond the host
  2. In headless runs send x-team-id, x-agent-id and x-task-id headers to the proxy. Without all three it falls back to an interactive picker and skips memory
  3. Expect every proxied turn to be stored. The proxy records upstream messages and model replies to Memory Core, and injected memory lands in your system prompt
  4. Check data.valid on /v3/meta/auth/verify and data.isError on /v3/tools/call. Both can fail inside a success envelope
  5. Retry /v3/session/add only on 500, 503 or a network error. The API reference says it isn't idempotent and writes a new object each call

Questions

Which is better for AI agents, MemPalace or TencentDB Agent Memory?

MemPalace scores 65.7 (B) on agent readiness against TencentDB Agent Memory's 56 (C), and leads in 5 of 7 scored categories. TencentDB Agent Memory leads on transparency & trust.

Do MemPalace and TencentDB Agent Memory need an API key?

MemPalace needs no key. TencentDB Agent Memory needs an API key.

Can an agent call MemPalace and TencentDB Agent Memory without installing anything?

MemPalace runs on your own machine, with no hosted endpoint listed. No hosted endpoint is listed for TencentDB Agent Memory.

Are MemPalace and TencentDB Agent Memory open source?

Yes. MemPalace is open source (MIT). TencentDB Agent Memory is open source (MIT).

Other comparisons with MemPalace or TencentDB Agent Memory

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