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supramal1

Cornerstone MCP Server

by supramal1
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Python
Remote

Cornerstone MCP Server

MCP server providing 17+ tools for Claude Code, Claude Desktop, and any MCP-compatible client to interact with Cornerstone memory.

Quick Start

  1. Clone and set up:

    git clone https://github.com/supramal1/cornerstoneMCP.git
cd cornerstoneMCP
bash setup.sh

  2. Edit .env with your API URL and key

  3. Add to Claude Code settings

  4. Start using it:

    • "Remember that the project deadline is March 15" → saves to memory

    • "What do we know about the Google pitch?" → recalls from memory

    • "Forget the old project deadline" → removes from memory

Related MCP server: Claude Memory MCP Server

Deploy

Deployed to Google Cloud Run (europe-west2). See cornerstone repo for deploy scripts.

Auth

OAuth 2.1 with JWT principal-based access control. Falls back to legacy API key auth.

Configuration

Required env vars: CORNERSTONE_URL, CORNERSTONE_API_KEY, OAUTH_JWT_SECRET, MCP_PUBLIC_URL.

Optional: DISABLE_OAUTH=true skips OAuth advertisement entirely (no /.well-known/oauth-*, no WWW-Authenticate: Bearer ...). Use when this MCP is fronted by a gateway (e.g. obot) that owns user auth and proxies inbound traffic without an Authorization header. Backend calls still authenticate via CORNERSTONE_API_KEY.

Tools

Simple (start here)

Tool

Purpose

Example

remember

Save anything to memory

remember("The budget is $50K")

recall

Search memory

recall("client's email?")

forget

Remove from memory

forget("old_deadline", confirm=True)

Workspace

Tool

Purpose

list_workspaces

See available workspaces

switch_workspace

Change active workspace

get_current_workspace

See which workspace is active

set_default_workspace

Set default workspace

Advanced

Tool

Purpose

get_context

Full context retrieval with metadata

add_fact

Save a structured key-value fact

add_note

Save a freeform note

search

Search across all memory types

list_facts

List recent facts

get_recent_sessions

See recent conversations

list_threads

See conversation threads

report_context_feedback

Rate retrieval quality

Review (MC-2 propose-then-approve)

Tool

Purpose

mc_list_proposals

List agent-proposed facts awaiting human review

mc_promote_facts

Promote proposed facts to current memory

mc_reject_facts

Reject proposed facts (reason required, stored verbatim)

Promote/reject relay the gateway-injected X-Forwarded-User-Email header on the outbound API call so the decision is attributed to the human reviewer. Absent the header (e.g. stdio), the decision is recorded without a forwarded identity.

Most users only need remember and recall. The advanced tools give you more control when you need it.

This server cannot be installed

F
license - not found
-
quality - not tested
B
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

Resources

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Looking for Admin?

If you are the server author, to access and configure the admin panel.

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