# hamilton - Doramagic AI Context Pack > Purpose: pre-work context for the user's host AI. This pack does not prove that the project has been installed, run, or validated. ## Project - canonical_name: `apache/hamilton` - capability: Apache Hamilton helps data scientists and engineers define testable, modular, self-documenting dataflows, that encode lineage/tracing and metadata. Runs and scales everywhere python does. - expected_user_outcome: Apache Hamilton helps data scientists and engineers define testable, modular, self-documenting dataflows, that encode lineage/tracing and metadata. Runs and scales everywhere python does. ## Operating Boundaries - Do not claim that the project has been installed, run, called through an API, or used on local files unless separate evidence proves it. - Project facts must come from repo evidence, Claim Graph, or explicit source references. - When a capability is not verified, mark it as unverified instead of completing it as fact. - publish_status: `publishable` - blocking_gaps: none --- ## Doramagic Context Augmentation The following sections strengthen the repository context for a host AI. Human Manual data is a reading route, and pitfall notes become operating constraints. ## Human Manual Outline Usage rule: this is only a reading route and salience signal, not factual authority. Concrete claims must still return to repo evidence or Claim Graph. Host AI hard rules: - Do not treat page titles, section order, summaries, or importance values as factual project evidence. - When explaining the Human Manual outline, state that it is only a reading route or salience signal. - Capability, installation, compatibility, runtime state, and risk claims must cite repo evidence, source paths, or Claim Graph. - **Core Architecture: Driver, Nodes & DAGs**: importance `high` - source_paths: hamilton/driver.py, hamilton/node.py, hamilton/graph.py, hamilton/base.py, hamilton/htypes.py - **Function Modifiers, Lifecycle Hooks & Plugins**: importance `high` - source_paths: hamilton/function_modifiers/base.py, hamilton/function_modifiers/configuration.py, hamilton/function_modifiers/expanders.py, hamilton/lifecycle/base.py, hamilton/lifecycle/api.py - **Graph Adapters, Execution & Caching**: importance `high` - source_paths: hamilton/execution/graph_functions.py, hamilton/execution/executors.py, hamilton/execution/grouping.py, hamilton/async_driver.py, hamilton/caching/adapter.py - **Hamilton UI, SDK & Data Tracking**: importance `high` - source_paths: ui/sdk/src/hamilton_sdk/adapters.py, ui/sdk/src/hamilton_sdk/driver.py, ui/sdk/src/hamilton_sdk/tracking/runs.py, ui/backend/server/server/settings.py, ui/backend/server/trackingserver_run_tracking/api.py ## Repo Inspection Evidence - repo_clone_verified: true - repo_inspection_verified: true - repo_commit: `bfc68552568b8a537a9a8772615d69476e60a041` - inspected_files: `README.md`, `pyproject.toml`, `docs/README.md`, `docs/code-comparisons/_dagster_snippets/dagster_dataflow.py`, `docs/code-comparisons/_dagster_snippets/dagster_execution.py`, `docs/code-comparisons/_dagster_snippets/hamilton_dataflow.py`, `docs/code-comparisons/_dagster_snippets/hamilton_execution.py`, `docs/code-comparisons/_kedro_snippets/hamilton_assemble.py`, `docs/code-comparisons/_kedro_snippets/hamilton_definition.py`, `docs/code-comparisons/_kedro_snippets/hamilton_execution.py`, `docs/code-comparisons/_kedro_snippets/kedro_assemble.py`, `docs/code-comparisons/_kedro_snippets/kedro_definition.py`, `docs/code-comparisons/_kedro_snippets/kedro_execution.py`, `docs/code-comparisons/langchain_snippets/hamilton_anthropic.py`, `docs/code-comparisons/langchain_snippets/hamilton_async.py`, `docs/code-comparisons/langchain_snippets/hamilton_batch.py`, `docs/code-comparisons/langchain_snippets/hamilton_completion.py`, `docs/code-comparisons/langchain_snippets/hamilton_fallbacks.py`, `docs/code-comparisons/langchain_snippets/hamilton_invoke.py`, `docs/code-comparisons/langchain_snippets/hamilton_logging.py` Host AI hard rules: - Without repo_clone_verified=true, do not claim that the source code has been read. - Without repo_inspection_verified=true, do not write README, docs, or package-file conclusions as facts. - Without quick_start_verified=true, do not claim that the Quick Start path has run successfully. ## Doramagic Pitfall Constraints These rules come from Doramagic discovery, validation, or compilation findings. The host AI must treat them as operating constraints, not background notes. ### Constraint 1: Capability evidence risk requires verification - Trigger: Project evidence flags a capability evidence risk. Review the linked source before relying on this workflow. - Host AI rule: Reproduce the official install and quickstart path in an isolated environment. - Why it matters: May increase setup, validation, or first-run risk for the user. - Evidence: community_evidence:github | https://github.com/apache/hamilton/issues/1043 - Hard boundary: Do not present this pitfall as solved, verified, or ignorable unless later evidence explicitly closes it. ### Constraint 2: Installation risk requires verification - Trigger: Project evidence flags a installation risk. Review the linked source before relying on this workflow. - Host AI rule: Reproduce the official install and quickstart path in an isolated environment. - Why it matters: May increase setup, validation, or first-run risk for the user. - Evidence: community_evidence:github | https://github.com/apache/hamilton/issues/1649 - Hard boundary: Do not present this pitfall as solved, verified, or ignorable unless later evidence explicitly closes it. ### Constraint 3: Capability evidence risk requires verification - Trigger: README/documentation is current enough for a first validation pass. - Host AI rule: Reproduce the official install and quickstart path in an isolated environment. - Why it matters: May increase setup, validation, or first-run risk for the user. - Evidence: capability.assumptions | https://github.com/apache/hamilton - Hard boundary: Do not present this pitfall as solved, verified, or ignorable unless later evidence explicitly closes it. ### Constraint 4: Maintenance risk requires verification - Trigger: Project evidence flags a maintenance risk. Review the linked source before relying on this workflow. - Host AI rule: Reproduce the official install and quickstart path in an isolated environment. - Why it matters: May increase setup, validation, or first-run risk for the user. - Evidence: evidence.maintainer_signals | https://github.com/apache/hamilton - Hard boundary: Do not present this pitfall as solved, verified, or ignorable unless later evidence explicitly closes it. ### Constraint 5: Security or permission risk requires verification - Trigger: no_demo - Host AI rule: Reproduce the official install and quickstart path in an isolated environment. - Why it matters: May increase setup, validation, or first-run risk for the user. - Evidence: downstream_validation.risk_items | https://github.com/apache/hamilton - Hard boundary: Do not present this pitfall as solved, verified, or ignorable unless later evidence explicitly closes it. ### Constraint 6: Security or permission risk requires verification - Trigger: no_demo - Host AI rule: Reproduce the official install and quickstart path in an isolated environment. - Why it matters: May increase setup, validation, or first-run risk for the user. - Evidence: risks.scoring_risks | https://github.com/apache/hamilton - Hard boundary: Do not present this pitfall as solved, verified, or ignorable unless later evidence explicitly closes it. ### Constraint 7: Maintenance risk requires verification - Trigger: issue_or_pr_quality=unknown。 - Host AI rule: Reproduce the official install and quickstart path in an isolated environment. - Why it matters: May increase setup, validation, or first-run risk for the user. - Evidence: evidence.maintainer_signals | https://github.com/apache/hamilton - Hard boundary: Do not present this pitfall as solved, verified, or ignorable unless later evidence explicitly closes it. ### Constraint 8: Maintenance risk requires verification - Trigger: release_recency=unknown。 - Host AI rule: Reproduce the official install and quickstart path in an isolated environment. - Why it matters: May increase setup, validation, or first-run risk for the user. - Evidence: evidence.maintainer_signals | https://github.com/apache/hamilton - Hard boundary: Do not present this pitfall as solved, verified, or ignorable unless later evidence explicitly closes it.