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Changelog

0.5.0 — 2025-10-18

Added

  • Cross-Agent Communication (in-process) with cross_agent.py.
  • CrossAgent, make_cross_agent_tools, ask_agent_<name>, and broadcast_to_agents.
  • build_deep_agent(..., cross_agents=...) to attach peers as tools.
  • Example examples/use_cross_agent.py.
  • Cross-Agent documentation section.

Changed

  • Pydantic v2 config via model_config = ConfigDict(extra="forbid").

Fixed

  • Clearer trace output for cross-agent tool calls.
  • Better errors for unknown peers in broadcast_to_agents.
  • Implemented sync _run on tools to satisfy BaseTool.

0.4.1 — 2025-10-17

Added

  • No new features.

Changed

  • Updated runtime compatibility for environments without deepagents installed (graceful fallback to ReAct agent).
  • Minor code cleanup and improved defensive checks in the agent builder.

Fixed

  • Fixed TypeError when falling back to create_react_agent() with langgraph>=0.6.
  • Agent builder now dynamically detects supported parameters and omits deprecated ones for smooth operation across LangGraph versions.
  • Improved _after() trace hook to skip None values when trace_tools=True, correctly displaying tool results.

0.4.0

Added

  • CLI now supports pretty console output, --trace/--no-trace, and --raw modes.
  • HTTP server specs fully supported with block string syntax (--http "name=... url=...").
  • Tool tracing hooks (on_before, on_after, on_error) integrated into the agent layer.
  • Richer agent streaming output: shows invoked tools, arguments, and results.
  • Added __version__ export via package metadata.
  • Basic PyTests

Changed

  • Updated runtime dependencies:
  • langgraph and langgraph-prebuilt pinned to >=0.6,<0.7.
  • langchain bumped to >=0.3.27.
  • fastmcp bumped to >=2.12.2.
  • CLI and agent examples polished for consistency and usability.
  • Development extras modernized (latest ruff, mypy, pytest, etc.).

Fixed

  • Multiple Ruff issues (imports, Optional → X | None, try/except cleanups).
  • Validation errors in CLI argument parsing.
  • Tool discovery now handles None or empty results gracefully.
  • Safer error handling in _FastMCPTool when tool callbacks raise.
  • CI workflow stabilized for PyPI publishing with setuptools-scm dynamic versioning.

0.3.0

Added

  • Improved JSON Schema → Pydantic mapping:
  • Carries through defaults and descriptions via Field.
  • Generates per-tool arg models (Args_<tool>).
  • Sanitizes model names for Pydantic compatibility.
  • CLI improvements:
  • Added --version flag.
  • Simplified option parsing.
  • Updated documentation.
  • PyPI Trusted Publishing workflow (publish on tag).
  • CI improvements: Ruff formatting, mypy fixes, skip deep extra on Python 3.10.

Fixed

  • Type errors in CLI, agent, tools, and clients.
  • CLI annotation options adjusted to satisfy Ruff rules.

Changed

  • Project license clarified to Apache-2.0.
  • Project metadata aligned with license notice.

0.1.0

  • Initial FastMCP client edition.