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As Decided v0.25.0 — current MCP

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@tcballard tcballard released this 29 Jul 06:49
v0.25.0
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Learn about vigilant mode.

MCP 2026-07-28 shipped yesterday. AsDecided supports it less than 24 hours later.

Current MCP hosts can now discover decided-mcp through the new stateless lifecycle, while existing initialize-based clients continue to work through MCP 2025-11-25.

This release adds:

  • server/discover and per-request protocol metadata
  • standard MCP HTTP routing headers and error responses
  • explicit result types and cache hints
  • JSON Schema 2020-12-compatible tool schemas
  • current AsDecided package identity for new clients
  • frozen compatibility for existing MCP response bytes

The six read-only grounding tools are unchanged. Corpus freshness, response budgets, HTTP auditing, and proxy-owned authentication remain intact.

The compatibility work is governed inside AsDecided itself through ADR-121, a linked requirement, a wire-contract design, and executable verification paths.

No model calls. No embeddings. No protocol guesswork.

Install

brew install asdecided/tap/asdecided-core

Existing Homebrew installations can upgrade after the v0.25.0 formula lands:

brew update
brew upgrade asdecided-core

Native release archives for Linux, Apple Silicon macOS, and Windows are attached automatically after publication.

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