Hindsight vs Weighted Compact

In-depth architectural comparison of the Hindsight and Weighted Compact 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 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.

Explore Hindsight Details

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.

Feature & Specification Comparison

Specification	Hindsight vectorize-io Knowledge & Memory	Weighted Compact zzallirog Knowledge & Memory
Summary	Hindsight: Agent Memory That Works Like Human Memory - Built for AI Agents to manage Long Term Memory	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).
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": {
    "vectorize-io-hindsight": {
      "command": "npx",
      "args": [
        "-y",
        "skills"
      ],
      "env": {
        "HINDSIGHT_API_LLM_API_KEY": "YOUR_HINDSIGHT_API_LLM_API_KEY_HERE"
      }
    }
  }
}

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

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