Weighted Compact vs Hindsight

In-depth architectural comparison of the Weighted Compact and Hindsight MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Weighted Compact when:

• You need dedicated capabilities in the Knowledge & Memory domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: Provably faithful recap with four invariants checked on all sessions, Local substrate of correction turns with multiple importance signals, Zero outbound network calls enforced by CI.

Explore Weighted Compact Details

Choose Hindsight when:

• You need dedicated capabilities in the Knowledge & Memory domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Free / Open Source).
• You have access to required keys: HINDSIGHT_API_LLM_API_KEY.
• Primary tools included: Long-term agent memory, Retain, recall, and reflect operations, Named memory banks.

Feature & Specification Comparison

Specification	Weighted Compact zzallirog Knowledge & Memory	Hindsight vectorize-io Knowledge & Memory
Summary	Inspectable memory substrate for Claude Code. Three read-only MCP tools (searchpairs, compactsession, substrateinfo) over a local-first, signal-scored parse of /.claude/projects/. Per-pair scores are numpy columns on disk, not opaque vectors in a service. Zero outbound calls (CI-enforced).	Hindsight: Agent Memory That Works Like Human Memory - Built for AI Agents to manage Long Term Memory
Category & Scope

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "zzallirog-weighted-compact": {
      "command": "npx",
      "args": [
        "-y",
        "zzallirog-weighted-compact"
      ]
    }
  }
}

{
  "mcpServers": {
    "vectorize-io-hindsight": {
      "command": "npx",
      "args": [
        "-y",
        "skills"
      ],
      "env": {
        "HINDSIGHT_API_LLM_API_KEY": "YOUR_HINDSIGHT_API_LLM_API_KEY_HERE"
      }
    }
  }
}

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