> ## Documentation Index
> Fetch the complete documentation index at: https://docs.prbe.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Glossary

> Every term Probe uses, in one sentence each.

## Structure

| Term | Means |
| - | - |
| **Workspace** | A shelf for projects. Every team member reads every workspace; writes can be restricted |
| **Computer's workspace** | Where a computer files its new projects, set by the wizard or `probe workspace use` |
| **Project** | A body of work, with a declared kind (`training`, `evaluation`, `research`, `general`) |
| **Subproject** | A phase of a bigger effort, nested under its parent |
| **Reference** | A lateral link between projects, for when containment would claim something false |
| **Experiment** | One question, and the runs that answer it. Stored as a project of kind `experiment`. The question is first-write-wins |
| **Conclusion** | An experiment's answer to its question, shown beside its header |
| **Run** | One execution: metrics, files, spans, a code snapshot, a lifecycle outcome |
| **Project-direct run** | A run with no experiment — the honest home for work with no hypothesis |
| **Run group** | Peer runs: a sweep, an ensemble, the ranks of a distributed job |
| **Child / fork** | A sub-run under a parent / a new run continuing a source from a step |
| **Version** | An immutable manifest pinning an experiment's run set at a moment |

## Data

| Term | Means |
| - | - |
| **Series** | One metric stream, identified by `(kind, key, dimensions)` |
| **Kind** | The rail a metric lives on — `model` by default, `hardware` for `log_hw` |
| **Dimension** | A low-cardinality grouping axis. **Widens the series** |
| **Label** | Per-sample identity on a point. Does *not* widen the series |
| **Coordinate** | The catalog of axes a run actually logged on |
| **Derived series** | Values computed after the fact, with stored rows and a **derived** chip |
| **View** | A read-time formula over logged series. Stores the formula, never data. Marked **ƒ** |
| **Span** | A typed interval inside a run: rollout, turn, tool call. Spans nest |
| **Trajectory** | A run's span tree |
| **Trial** | One rollout's on-disk output, captured into a run and keyed to a step |

## Files

| Term | Means |
| - | - |
| **Artifact** | A file with an anchor — run, experiment, project or Shared |
| **Dataset** | A team-wide name with versions (`dataset:c4-clean@3`), each made by a run; see [Datasets](/tracking/datasets.md) |
| **Source** | Where outside data came from: a Hub dataset or model, a bucket, a URL, a repo |
| **Checkpoint** | A saved model state from a run. It remembers what the run had trained on when it was saved |
| **Data catalog** | The dashboard's **Data** page: datasets, checkpoints and sources; see [Data](/dashboard/data.md) |
| **`hash` level** | A `.probe.config` level: runs over a path are recorded, its files only by hash and row count |
| **Anchor** | Which entity an artifact belongs to |
| **Reference** | An artifact recorded as a pointer, with the bytes left where they are |
| **Shared** | The team-owned folder, home of the team's datasets. One per team; every member sees all of it |
| **Snapshot** | Code, environment and hardware captured at run start |
| **Execution record** | The server-assembled record a reproduction reads from |

## Prose

| Term | Means |
| - | - |
| **description** | The short identity line |
| **Summary** | A project's or experiment's teammate-facing page (its Overview page), written by the recorders; see [Summaries](/tracking/summaries.md) |
| **Recorder** | Whoever records a session: the Probe daemon's writer, or the agent itself working inline |
| **Notes** | The operational briefing agents read and write. Append, merge-on-push, sub-notes |
| **Sub-note** | A titled document beside an entity's main note |
| **Team note** | One shared document injected into every agent session. Has a render budget |

## Clients

| Term | Means |
| - | - |
| **`probe`** | The CLI and Python SDK, one package |
| **`probe-research`** | The tracking plugin: skills plus the read-only MCP server |
| **`probe-research-tap`** | The session-capture plugin |
| **The wizard** | `npx probe-research` — install, import, configure, diagnose |
| **The switch** | Per-conversation state: `on`, `read`, `off`, `inline` |
| **Probe daemon** | A process beside your coding agent that records the session and reads the team's work for it; see [the daemon](/agents/daemon.md) |
| **Agent sign-in** | A coding agent signing its person up or in; the person signs in with Google and types the agent's 6-digit code |
| **The outbox** | The durable local write queue |
| **Context** | A named local account: endpoint, credentials, anchors |

## Platform

| Term | Means |
| - | - |
| **Session** | A coding-agent conversation, captured or imported |
| **Digest** | A condensed reading of a workspace's recent activity |
| **Workspace canvas** | The board **Projects** opens on: every project, its experiments and runs, and the links between them |
| **Knowledge** | The one search index over documents, sessions, code and notes |
| **Exact channel** | The search channel that matches identifiers, names and paths |
| **Semantic channel** | The search channel that matches meaning |
| **Engine-off** | A self-hosted install without the knowledge engine — exact results only |
| **Backfill** | Importing work already done, from a folder or saved transcripts |
| **Live sync** | A connector keeping new upstream content flowing in |


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