Palace MCP Server

A local-first memory retrieval engine for coding agents, implemented in Rust. This project stores verbatim project and conversation memory, embeds it locally, and retrieves source-grounded context through MCP. It is built for coding agents that need to remember decisions, prior fixes, commands, project conventions, and user preferences across sessions without running a separate vector database.

People who work with embeddings, knowledge graph and local first and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Rust.

VERIFIED ACTIVE

LAST COMMIT 2026-09-27 · ★ 8 · #201 OF 250 MAINTAINED CODING AGENT · VERIFIED 2026-09-30

MIT · Rust servers · how we verify → /methodology

01 · Install Palace

Claude Desktop

Settings → Extensions → Install, then select the https://github.com/AncientiCe/palace-rs/releases/download/v0.15.0/palace-0.15.0.mcpb .mcpb bundle

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as Claude Desktop extension (.mcpb bundle)

license MIT - declared in the repository

registry namespace io.github.AncientiCe is GitHub-verified and matches the repo owner

03 · What Palace can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.15.0 · 2026-09-27

[0.15.0] - 2026-09-27 · Added · Prompt-time recall hook. palace install now registers a · UserPromptSubmit hook for Claude Code and Codex that searches Palace with · the submitted question and injects the relevant…

v0.14.2 · 2026-09-23

[0.14.2] - 2026-09-23 · Security · Bumped rustls to 0.23.45 for RUSTSEC-2026-0285 (TLS 1.3 handshake · messages accepted across encryption level boundaries). · Bumped anyhow to 1.0.104 for RUSTSEC-2026-0190…

v0.14.1 · 2026-09-01

[0.14.1] - 2026-09-01 · Fixed · palace_diary_read, palace_diary_search, and palace_recall_check MCP · tool schemas didn't document agent_name as required, even though the · server enforces it - a client generating…

04 · Who maintains Palace

Palace is maintained by ancientice. It's the only MCP server we track from this author; the repo dates to Apr 2026.

05 · Facts

repository
github.com/ancientice/palace-rs
category
coding agent - ranked #201 of 250 actively-maintained coding agent servers as of 2026-09-30.
release cadence
9 releases in the last 90 days (latest 2026-09-27)
registry
io.github.AncientiCe/palace-rs (active, first published 2026-07-02 · 9 versions)
packages
mcpb:https://github.com/AncientiCe/palace-rs/releases/download/v0.15.0/palace-0.15.0.mcpb

06 · Palace FAQ

What is Palace?

A local-first memory retrieval engine for coding agents, implemented in Rust. This project stores verbatim project and conversation memory, embeds it locally, and retrieves source-grounded context through MCP. It is built for coding agents that need to remember decisions, prior fixes, commands, project conventions, and user preferences across sessions without running a separate vector database.

Is Palace still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-27 and it shipped 9 releases in the last 90 days. We re-verify nightly.

07 · Alternatives to Palace

Alternatives to Palace

Maintained coding agent servers if Palace isn't the fit.

  1. Serena A powerful toolkit for coding, providing semantic retrieval and editing capabilities. ★ 29,914 · 2026-09-29
  2. Desktop Commander MCP server for terminal commands, file operations, and process management ★ 9,842 · 2026-09-29
  3. Ouroboros Pins an acceptance spec; the verify command and expected output never enter the success contract. ★ 6,151 · 2026-09-29
  4. Socraticode MCP server for enterprise local codebase indexing, semantic search, and code dependency graphs. ★ 3,327 · 2026-09-28
  5. Omnara Deploy durable AI agents with Omnara, an open-source managed-agent platform. ★ 2,880 · 2026-09-30
  6. MATLAB MCP Server Connect AI coding agents to MATLAB. Run code, tests, and analysis via MCP. ★ 1,594 · 2026-09-25

Pairs well with

Servers that cover what Palace doesn't - only shown when the pairing reason fits the companion.

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  3. Xcode Build MCP → developer tools companion developer tools · ★ 6,443
  4. Sentry MCP → developer tools companion developer tools · ★ 871
  5. Server Filesystem → filesystem companion filesystem · ★ 39,168
  6. Pdf MCP → filesystem companion filesystem · ★ 145

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