The AI Toolchain — issue -064, June 16, 2026

Copilot CLI v1.0.63 adds deferTools MCP config, alphabetic --help sorting, per-session agent mode, and an experimental /rewind overhaul.

$ git clone --branch v1.0.63 https://github.com/github/copilot-cli.git
# already have the repo? check out this version:
$ git checkout v1.0.63

{
  "mcpServers": {
    "my-server": {
      "command": "npx",
      "args": ["my-mcp-server"],
      "deferTools": true
    }
  }
}

• ›Adds deferTools option to MCP server config to keep a server's tools always available even when tool search is enabled.
• ›PostToolUse hook matchers (e.g. Edit|Write) are now honored so formatters and linters run only after the tools they target.
• ›Options in --help output now sort alphabetically, including options with two long flags.
• ›Press w in /diff to hide whitespace-only changes.
• ›Blocked image attachments now explain actionable next steps: enable vision via the 'Editor preview features' policy, switch to a vision-capable model, or try a different image.

AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI

Pi v0.79.5 adds provider-scoped API key env overrides, a global HTTP proxy setting, and Vercel AI Gateway attribution headers.

$ git clone --branch v0.79.5 https://github.com/earendil-works/pi.git
# already have the repo? check out this version:
$ git checkout v0.79.5

# In Pi global settings (e.g. ~/.config/pi/settings.json)
{
  "httpProxy": "http://proxy.corp.example.com:8080"
}

# In auth.json
{
  "apiKeys": [
    {
      "provider": "amazon-bedrock",
      "env": {
        "AWS_ACCESS_KEY_ID": "AKIA...",
        "AWS_SECRET_ACCESS_KEY": "secret",
        "AWS_REGION": "us-east-1"
      }
    }
  ]
}

• ›Adds provider-scoped env overrides in auth.json API key entries for Cloudflare, Azure OpenAI, Google Vertex, Amazon Bedrock, cache retention, and proxy settings — scoped to Pi without touching the project shell.
• ›Adds a global httpProxy setting that propagates HTTP_PROXY and HTTPS_PROXY to all Pi-managed HTTP clients.
• ›Adds http-referer and x-title attribution headers to Vercel AI Gateway requests by default.
• ›Adds an xp footer marker in the UI when experimental features are enabled.

Your own personal AI assistant. Any OS.

OpenClaw v2026.6.8 adds GLM-5.2 and Claude Haiku 4.5 support, Telegram rich-message delivery, WhatsApp ACP bindings, /btw CLI command, and built-in usage footer rendering.

$ git clone --branch v2026.6.8 https://github.com/openclaw/openclaw.git
# already have the repo? check out this version:
$ git checkout v2026.6.8

• ›Adds GLM-5.2 and Claude Haiku 4.5 catalog entries with normalized provider-qualified model IDs across OpenRouter and Google Vertex paths.
• ›Adds Telegram rich-message delivery: tables, lists, expandable blockquotes, preserved intentional line breaks, and CLI-backed replies.
• ›Adds WhatsApp ACP binding support so configured ACP bindings are honored on delivery.
• ›Adds /btw command support in CLI-backed sessions.
• ›Adds built-in full footer renderer for /usage and reply payload hooks, including a default footer template, per-turn usage state, credential-aware limits, and fixed-decimal formatting for usage-bar templates.

llama.cpp b9669 adds backend sampling support for Eagle3 speculative decoding.

$ git clone --branch b9669 https://github.com/ggml-org/llama.cpp.git
# already have the repo? check out this version:
$ git checkout b9669

• ›Adds backend sampling support for Eagle3, enabling hardware-accelerated speculative decoding with the Eagle3 draft model architecture.

$ git clone --branch b9665 https://github.com/ggml-org/llama.cpp.git
# already have the repo? check out this version:
$ git checkout b9665

$ llama-bench --offline

$ git clone --branch b9664 https://github.com/ggml-org/llama.cpp.git
# already have the repo? check out this version:
$ git checkout b9664

Phoenix 17.7.0 adds token detail metrics charts, agent session context, and shareable trace time range URLs.

$ git clone --branch arize-phoenix-v17.7.0 https://github.com/Arize-ai/phoenix.git
# already have the repo? check out this version:
$ git checkout arize-phoenix-v17.7.0

• ›Adds token detail metrics charts to visualize granular token usage breakdowns in the UI.
• ›Adds session context for agents, enabling richer tracking of agent sessions across traces.
• ›Makes trace time range URLs shareable so practitioners can link directly to a specific time window in a trace view.

Langfuse v3.187.0 adds evaluator deletion via UI/API/MCP, reapply-after-delete support, and resource URLs in agent/MCP context.

$ git clone --branch v3.187.0 https://github.com/langfuse/langfuse.git
# already have the repo? check out this version:
$ git checkout v3.187.0

• ›Adds ability to delete evaluators through the UI, API, and MCP interfaces.
• ›Supports re-applying evaluator deletion, enabling recovery workflows after an evaluator is removed.
• ›Includes resource URLs in agent and MCP context for richer tracing of tool calls.
• ›Allows the agent window to be resized and repositioned in the UI.