projects.py DOX

Purpose

• Own the projects.py helper module.
• This module owns project metadata, workspace creation, Git status, and project-scoped settings including per-project MCP server config.
• Keep this file-level DOX profile synchronized with projects.py because this directory is intentionally flat.

Ownership

• projects.py owns the runtime implementation.
• projects.py.dox.md owns durable notes about responsibilities, contracts, side effects, and verification for that implementation.
• Classes:
• FileStructureInjectionSettings (TypedDict)
• SubAgentSettings (TypedDict)
• BasicProjectData (TypedDict)
• GitStatusData (TypedDict)
• EditProjectData (BasicProjectData)
• Top-level functions:
• get_projects_parent_folder()
• get_project_folder(name: str)
• get_project_meta(name: str, *sub_dirs)
• validate_project_name(name: str | None) -> str
• delete_project(name: str)
• create_project(name: str, data: BasicProjectData)
• clone_git_project(name: str, git_url: str, git_token: str, data: BasicProjectData): Clone a git repository as a new A0 project. Token is used only for cloning via http header.
• load_project_header(name: str)
• _default_file_structure_settings()
• _normalizeBasicData(data: BasicProjectData) -> BasicProjectData
• _normalizeEditData(data: EditProjectData) -> EditProjectData
• _edit_data_to_basic_data(data: EditProjectData)
• _basic_data_to_edit_data(data: BasicProjectData) -> EditProjectData
• update_project(name: str, data: EditProjectData)
• load_basic_project_data(name: str) -> BasicProjectData
• load_edit_project_data(name: str) -> EditProjectData
• save_project_header(name: str, data: BasicProjectData)
• load_project_extended_data(name: str) -> ProjectExtendedData
• save_project_extended_data(name: str, project_data: ProjectExtendedData)
• _project_extended_data_for_save(data: object) -> ProjectExtendedData
• _merge_project_extended_data(data: EditProjectData, extended_data: object) -> None
• load_project_mcp_servers(name: str) -> str
• save_project_mcp_servers(name: str, mcp_servers: str)
• get_active_projects_list()
• _get_projects_list(parent_dir)
• activate_project(context_id: str, name: str, mark_dirty: bool=...)
• deactivate_project(context_id: str, mark_dirty: bool=...)
• reactivate_project_in_chats(name: str)
• deactivate_project_in_chats(name: str)
• build_system_prompt_vars(name: str)
• get_additional_instructions_files(name: str)
• get_project_instruction_files(name: str, include_agents_md: bool=...) -> list[tuple[str, str]]
• get_project_agents_md_instruction_file(name: str) -> tuple[str, str] | None
• _format_project_instruction_files(instruction_files: list[tuple[str, str]]) -> str
• _normalize_include_agents_md(value: object) -> bool
• Notable constants/configuration names: PROJECTS_PARENT_DIR, PROJECT_META_DIR, PROJECT_INSTRUCTIONS_DIR, PROJECT_KNOWLEDGE_DIR, PROJECT_SKILLS_DIR, PROJECT_HEADER_FILE, PROJECT_MCP_SERVERS_FILE, PROJECT_AGENTS_MD_FILES, DEFAULT_MCP_SERVERS_CONFIG, CONTEXT_DATA_KEY_PROJECT.

Runtime Contracts

• Helper modules own reusable framework APIs and must preserve public callers unless all callers, tests, and docs are updated together.
• Update this file whenever public functions, classes, persistence behavior, path/security assumptions, side effects, or cross-module contracts change.
• Per-project MCP server configuration is persisted as .a0proj/mcp_servers.json, exposed through load_edit_project_data(...), and saved during project create/clone/update flows.
• Additional project-edit payload sections are delegated through extensible load_project_extended_data(...) and save_project_extended_data(...); the project helper must stay storage-agnostic and plugin-specific config rules belong to the owning plugin.
• Project extension data may add named top-level sections such as llm, but it must not overwrite core project fields owned by EditProjectData.
• Project extension save payloads exclude core project fields and transient inputs such as git_token; plugins needing core metadata should load it by project name.
• Project metadata setup creates and repairs .a0proj/instructions, .a0proj/knowledge, and .a0proj/skills so settings surfaces can open those folders consistently.
• Project MCP config uses the same JSON string shape as global MCP settings: an object with mcpServers.
• Project MCP load/save paths validate project names as simple folder basenames before touching .a0proj/mcp_servers.json.
• Observed side-effect areas: filesystem reads, filesystem writes, filesystem deletion, plugin state, settings/state persistence, secret handling.
• Imported dependency areas include: helpers, helpers.print_style, os, typing.

Key Concepts

• Important called helpers/classes observed in the source: files.get_abs_path, files.delete_dir, deactivate_project_in_chats, files.create_dir_safe, create_project_meta_folders, _normalizeBasicData, save_project_header, save_project_mcp_servers, load_project_mcp_servers, save_project_extended_data, load_project_extended_data, _project_extended_data_for_save, _merge_project_extended_data, _PROJECT_CORE_EDIT_KEYS, _PROJECT_TRANSIENT_INPUT_KEYS, extension.extensible, files.basename, dirty_json.parse, FileStructureInjectionSettings, cast, _normalizeEditData, load_edit_project_data, _edit_data_to_basic_data, save_project_variables, save_project_secrets, save_project_subagents, reactivate_project_in_chats, load_basic_project_data.
• Keep request/response, tool, or helper semantics documented here at the same time as source changes.

Work Guidance

• Preserve public helper APIs used by core code and plugins unless every caller is updated.
• Keep path, auth, secret, persistence, network, and subprocess behavior explicit and bounded.
• Prefer adding cohesive helper functions here only when behavior is reused across modules.

Verification

• Run targeted tests for changed helper behavior; run security regressions for auth, filesystem, WebSocket, tunnel, upload, or secret-handling helpers.
• Related tests observed by source search:
  • tests/test_model_config_project_presets.py
  • tests/test_office_document_store.py
  • tests/test_plugin_activation_ui.py
  • tests/test_projects.py
  • tests/test_skills_runtime.py
  • tests/test_task_scheduler_timezone.py
  • tests/test_time_travel.py
  • tests/test_tool_action_contracts.py

Child DOX Index

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