Command-line reference

Version 0.5.0.

The ocura-oss command records trusted local command attempts, creates metadata branches, compares branch evidence, and verifies project-local state.

ocura-oss COMMAND [OPTIONS]

Commands run against one project root. Unless --root PATH is supplied, the root is the current working directory. State is stored below that root in .ocura-oss/.

Command summary

Run ocura-oss COMMAND --help for command-specific help.

Conventions

Project root

--root PATH identifies the directory that contains .ocura-oss/. Relative paths and ~ are resolved before use. The command does not change the parent process working directory.

init and demo create state. All other commands require initialized state.

Declared parameters

--param KEY=VALUE records a string label. The option is repeatable. Keys must begin with a letter or underscore and may then contain letters, digits, underscores, periods, or hyphens. Keys and values must not be empty. A key may appear only once in one invocation.

Declared parameters do not configure the child process. Pass process arguments after -- in run. To declare a value once and also pass it, use run --substitute and write {KEY} in the command, quoted in PowerShell.

JSON output

Every command accepts --json. JSON mode writes one result document to standard output, with Unicode escaped so it also works on legacy Windows encodings. Diagnostic messages go to standard error.

run --json retains child stdout and stderr in their logs without streaming them. A recorded command failure, interruption, or launch failure still returns a JSON result with its existing nonzero exit status. Invalid input or a state error returns no result document.

Summary data

Default summaries and listing output omit command arguments, environment values, and log contents. run streams child output unless --quiet or --json is present, so streamed output is separate from the final summary.

Raw atom records retain command arguments, and log files retain command output. Keep secrets out of command arguments, declared parameters, branch reasons, and output. When a run cannot avoid one, run --mask-arg keeps a command token out of the records and run --no-capture keeps output off disk; see keeping sensitive values out of records.

init

Create one den and one default pathway.

ocura-oss init [--root PATH] [--name NAME] [--json]

Options

Behavior

init creates .ocura-oss/, one den record, and one unbranched default pathway. Initialization fails if .ocura-oss/ already exists, including when the directory contains incomplete state.

The text response identifies the den, default pathway, and state directory.

JSON output

Exit status

Example

ocura-oss init --root ./experiment --name "batch study"

run

Run one trusted local command and record terminal evidence.

ocura-oss run [--root PATH] [--pathway ID] [--param KEY=VALUE] [--quiet] [--json]
              [--no-capture] [--mask-arg POSITION] [--substitute]
              [--context] [--context-file PATH] -- COMMAND...

The -- separator is required. Ocura OSS options belong before it. Every token after it is passed to the child command as one argument token.

Arguments and options

Execution

The command runs with shell=False and the project root as its working directory. It inherits the invoking process environment. Environment keys and values are not serialized.

Stdout and stderr are captured as separate files under .ocura-oss/logs/. Unless --quiet or --json is present, the same bytes are also streamed to the terminal.

With --no-capture, no log files are written. Output still streams to the terminal unless --quiet or --json is present, and is otherwise discarded.

--mask-arg POSITION counts COMMAND tokens from zero, so position 0 is the executable. The command receives the real token; the attempt and atom records store <masked> there and list the position. Masking does not alter output, so a command that prints the value still writes it to a captured log. A position outside COMMAND is rejected before anything runs.

With --substitute, each {KEY} in a COMMAND token is replaced by that parameter's value before the command launches. A value comes from this run's --param declarations first and then from the pathway's effective parameters, so a run on a branch can use the branch's values without restating them. Every parameter used this way is recorded as a declared parameter of the run, and the recorded command is the substituted one. Write {{ or }} for a literal brace. A placeholder with no value, or an unbalanced brace, is rejected before anything runs. Without --substitute, braces are passed through untouched. Quote a placeholder, as in "{batch}", when the shell is PowerShell: it reads bare braces as a script block and does not pass them to the command.

--context and --context-file add an optional context object to the record; see optional launch context. Neither runs or reads anything unless it is present.

One run produces:

• one atom containing timing, outcome, declared parameters, command arguments, and log metadata
• one stdout log and one stderr log, unless --no-capture is present
• one branchable terminal chokepoint

The attempt is journaled under .ocura-oss/attempts/ before the command launches, and that entry is removed once the atom and chokepoint are written.

A passing command records passed. A nonzero return code records failed. A launch error records launch_failed. The first Ctrl+C records interrupted with partial output retained. A second Ctrl+C exits immediately; so does a killed run process. Either leaves the attempt unfinished until recover closes it as abandoned. The command itself may still be running at that point: Ocura OSS does not stop it.

Text output

The final text summary includes the atom, chokepoint, pathway, outcome, duration, log paths, and the return code or launch category when available. With --no-capture, it states output: not captured in place of the log paths. It does not repeat command arguments.

JSON output

Use returned IDs to continue the automated workflow. The training example provides an executable client.

Exit status

Examples

ocura-oss run -- python script.py --epochs 4

ocura-oss run --pathway pathway-<id> --param batch=4 --quiet -- python script.py --batch 4

Declare a value once and pass it to the command:

ocura-oss run --param batch=4 --substitute -- python train.py --batch "{batch}"

Record the revision, the platform, and the digest of a lock file with the run:

ocura-oss run --context --context-file requirements.lock -- python train.py

Keep a token out of the records and its output off disk. Position 3 is the value after --token:

ocura-oss run --no-capture --mask-arg 3 -- python upload.py --token <value>

pathways

List structurally valid pathway records in creation order, oldest first.

ocura-oss pathways [--root PATH] [--json]

Options

Output

Each entry contains:

JSON mode returns {"pathways": [...]}.

The listing is fail-closed. A malformed or misnamed record causes exit status 2 instead of producing a partial list. This command does not verify pathway relationships or logs; use verify for complete state verification.

Exit status

chokepoints

List structurally valid terminal chokepoint records in reverse creation order, newest first.

ocura-oss chokepoints [--root PATH] [--json]

Options

Output

Each entry contains:

JSON mode returns {"chokepoints": [...]}. Command arguments and log contents are not included.

The listing is fail-closed. A malformed or misnamed record causes exit status 2. This command does not verify atom relationships or logs; use verify for complete state verification.

Exit status

branch

Create a metadata-only child pathway from verified terminal evidence.

ocura-oss branch --from CHOKEPOINT_ID --reason TEXT [--param KEY=VALUE] [--root PATH] [--json]

Arguments and options

Verification and state effects

Before writing, branch validates the chokepoint, its atom, its pathway, their relationships, and the logs the atom recorded. Missing, checksum-mismatched, nonterminal, nonbranchable, or otherwise unverifiable sources are rejected.

The child inherits the parent's effective parameters and applies the supplied overrides. The operation records the parent pathway, source chokepoint, reason, creation time, and effective parameters.

It does not copy a workspace, process, memory image, checkpoint, artifact, source atom, or external state. It does not run a command. Use run --pathway CHILD_ID to attach later evidence.

JSON output

JSON mode returns the fields documented for a pathway listing. has_terminal_evidence is false for the new child.

Exit status

Example

ocura-oss branch --from chokepoint-<id> --reason "increase batch" --param batch=4

compare

Compare one verified source run with the newest recorded run on each child pathway created from its chokepoint.

ocura-oss compare [--from CHOKEPOINT_ID] [--root PATH] [--json]

Options

Source selection

With --from, comparison verifies the selected source and the child evidence used in the result.

It also reads and validates every pathway record to discover children, and every atom record when the selected source has children. An unrelated malformed or checksum-invalid pathway or atom record can therefore block an explicit comparison. This does not verify every unrelated log or relationship.

Without --from, the complete state must pass verification before Ocura OSS selects the newest chokepoint referenced by a child pathway. A state with no child pathways selects its newest terminal chokepoint and reports no_branch. A malformed record, broken reference, unverified log, orphaned log file, unexpected log directory, atom without a chokepoint, or abandoned attempt anywhere in state blocks automatic selection. Attempts that another process is still recording do not.

Comparison state

For a child with multiple atoms, comparison uses the newest atom by start time and identifier. It reports pathway parameter differences and, when child evidence exists, run-level declared parameter differences.

Parameter deltas contain inherited, added, and changed values. Removed parameters are outside the comparison schema.

Comparison reads stored records and logs. It does not rerun commands.

JSON output

The top-level document contains:

Each child contains its pathway ID, reason, source chokepoint, pathway parameter delta, source run, optional child run, optional run parameter delta, and missing_evidence flag.

A run summary contains id, pathway_id, outcome, started_at, duration_seconds, and return_code. duration_seconds is null for an abandoned run, and the text view prints abandoned (duration unknown).

Exit status

verify

Recheck every state record and every log referenced by a recorded run.

ocura-oss verify [--root PATH] [--json] [--against FILE]

Options

Checks

Verification covers:

• record envelopes, kinds, schema versions, and canonical checksums
• payload identifiers and agreement between identifiers and filenames
• required fields and outcome invariants
• den, pathway, atom, and chokepoint references
• pathway lineage cycles and source-parent agreement
• that every atom has exactly one chokepoint
• referenced log containment, existence, byte count, and SHA-256 digest
• unreferenced files and unexpected directories under .ocura-oss/logs/
• unfinished attempts
• with --against, that every retained manifest entry is still present with the same checksum

logs_checked counts individual logs that passed verification. A valid atom normally contributes two logs, and none when it was recorded without capture.

Verification may run while other processes record runs under the same root. An attempt that a live process is still recording is listed under attempts.running and is not a problem; its logs are not checked until it is finalized. An abandoned attempt is a problem until recover closes it.

JSON output

The text view prints the digest on its own line when the state is intact.

Verification establishes consistency among local records and logs. It does not establish authorship or reproduce external execution conditions. Checksums kept inside the state cannot show that a record was rewritten together with its checksum; --against with a manifest kept elsewhere can.

Exit status

manifest

Verify the complete state, then print one checksum line for every record.

ocura-oss manifest [--root PATH] [--json]

Options

Output

Each line is KIND ID CHECKSUM, where KIND is den, pathway, atom, or chokepoint and CHECKSUM is that record's stored SHA-256. Lines are sorted. JSON mode returns {"digest": "...", "entries": [...]}; the digest is the SHA-256 of the lines, each terminated by a newline.

Keep the output where this state's writers cannot change it and pass it to verify --against later. See retained manifests for what that detects and its limits.

A manifest is printed only for a state that verifies completely. Attempts still being recorded are not records yet and are not listed.

Exit status

attempts

List runs that have started and are not yet finalized, oldest first.

ocura-oss attempts [--root PATH] [--json]

Options

Output

Each entry contains:

JSON mode returns {"attempts": [...]}. Command arguments and log contents are not included. A finalized run is an atom and is not listed, so the list is empty when nothing is running and nothing was abandoned.

Exit status

recover

Close every attempt whose recording process stopped before finalizing it.

ocura-oss recover [--root PATH] [--json]

Options

Behavior

Each abandoned attempt is closed according to how far its recorder got:

An abandoned atom has no finish time, duration, or return code; none is invented. Output captured before the recorder stopped is retained and measured, so it verifies afterward.

Running attempts are left alone, so recover is safe to call while other runs are in flight. Run it only after the abandoned command itself has stopped: a command that outlived its recorder can keep writing to logs that recovery has already measured.

JSON output

JSON mode returns {"recovered": [...]}. Each entry contains:

The text view prints one line per closed attempt and a final recovered: N count.

Exit status

demo

Run the complete workflow in a new retained directory.

ocura-oss demo --root PATH [--json]

Options

Behavior

The demonstration performs:

• initialization
• a passing baseline run with declared batch=1
• selection of the resulting terminal chokepoint
• a metadata branch with an explicit reason and effective batch=4
• a passing run explicitly attached to the child pathway
• complete state verification
• a ready comparison

Both commands must pass and verification must report no problems before the demonstration reports completion.

The destination is retained on success and failure. An existing destination produces exit status 2. If a stage fails, the diagnostic names that stage.

JSON output

The document contains the resolved root, an ordered steps array, and the complete comparison object.

Exit status

Exit status summary

Argument parsing errors also use status 2.

Security and execution boundary

run executes command tokens directly with shell=False. Ocura OSS does not sandbox commands, restrict network access, contain hostile code, or guarantee process-tree isolation.

Use owner-authorized workloads inside an execution environment with suitable permissions and isolation. See state and verification and Python API reference for the corresponding programmatic contract.