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Availability: Reviews is a Beta feature available on Enterprise and Cloud Pro plans. It is off by default and must be enabled by an organization admin.
Reviews scans every AI agent turn for signs that the answer was probably wrong — a missing metric, an ambiguous field, a gap in your project context — and groups the findings by root cause so you can fix them in one place. For each finding, Reviews proposes the smallest change that would have prevented it:
  • Semantic layer fixes open a pull request against your dbt project (rename a field, add a description, add a metric).
  • Project context fixes add a short note that your agents read before answering future questions.

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When to use it

Turn Reviews on once you have agents in regular use and want a feedback loop that improves them without manually reading thread transcripts. It’s most useful when:
  • Users ask the same kind of question repeatedly and the agent struggles
  • You want to keep dbt metadata and agent instructions tight as your data model evolves
  • You’re rolling agents out to a wider audience and want admin-level visibility into quality
If you’re still setting your first agent up, start with agent setup and evaluations first — Reviews works best once there’s real usage to learn from.

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Enabling Reviews

Reviews is opt-in. Until an admin enables it, no agent turns are processed and no findings are collected.
  1. Go to Settings → Ask AI → General.
  2. Toggle Review AI agent turns on.
Once enabled, future agent turns are reviewed in the background. Existing threads are not back-filled. To stop collecting findings, toggle the setting off. Previously collected findings remain visible until you act on or dismiss them.

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Reviewing findings

Open Settings → Ask AI → Reviews to see what Reviews has surfaced. Findings are grouped by root cause so you can fix the underlying issue once instead of replying to threads one by one.
Finding typeWhat it meansHow to fix
Semantic layerA field, metric, or description is missing, ambiguous, or wrong in your dbt project.Apply the suggested fix to open a pull request against your dbt repository.
Project contextYour agents are missing background knowledge to answer reliably (e.g. which table to use for “active users”).Apply the suggested fix to add a note your agents read before answering.
Each finding links back to the original agent turn so you can see the question, the answer, and the evidence Reviews used to flag it.

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The lightdash.project_context.yml file

Project context fixes don’t touch your dbt models. Instead, they write to a separate file — lightdash.project_context.yml — that lives next to lightdash.config.yml inside your dbt project directory. Your AI agents read it before they answer, so notes you add here change future behavior without changing the semantic layer. The file is committed to your dbt repo and travels with the rest of your project metadata. The first time Reviews applies a project context fix, it creates the file (with a header explaining what it’s for) and opens a pull request. Subsequent fixes add or update entries in the same file. The full JSON Schema is published at lightdash-project-context-1.0.json — point your editor at it for autocomplete and validation.

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File shape

lightdash.project_context.yml
version: 1
entries:
  - id: mau
    kind: definition
    content: "MAU means monthly active users — distinct users with at least one session in the last 30 days."
    terms: ["MAU", "monthly active users"]
    objects: []
  - id: active-users-table
    kind: context
    content: "Use `fct_user_activity` for active-user questions; `dim_users` is a slowly-changing dimension and double-counts churned users."
    terms: ["active users"]
    objects: ["fct_user_activity", "dim_users"]
The top-level document is { version, entries }. A bare array of entries is also accepted for backward compatibility, but new files are written in the canonical shape.

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Top-level properties

PropertyTypeRequiredDescription
versionnumberyesSchema version. Currently always 1. Bumping this is the escape hatch for a future breaking change.
entriesarrayyesThe list of context entries. May be empty.

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Entry properties

Each item in entries is a single self-contained fact your agents should know.
PropertyTypeRequiredDescription
kind"definition" | "context"yesHow the entry is retrieved. Use definition for term-triggered facts (acronyms, vocabulary, “X means Y”). Use context for object-scoped guidance (routing rules, join rules, durable facts about a model).
contentstringyesOne self-contained sentence. This is what the agent reads. Keep it short and unambiguous.
idstringnoStable identifier used to update the entry later. Optional — Lightdash derives one from terms[0] (or content) at ingest if you omit it, suffixing on collision. Provide an explicit id if you want to hand-edit later without worrying about churn.
termsstring[]noPrompt-facing trigger words and phrases. Used to surface definition entries when a user’s question mentions one of them. Defaults to [].
objectsstring[]noSemantic objects (models, fields, joins) this entry concerns. Used to surface context entries when the agent is reasoning about one of these objects. Defaults to [].
Unknown keys on an entry are preserved on round-trip, so a field a newer Lightdash version adds won’t be silently dropped if you edit the file by hand.

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Editing the file

You can edit lightdash.project_context.yml directly — it’s a normal file in your dbt repo. The Reviews flow is designed to coexist with manual edits: writeback uses the GitHub API to merge a single entry at a time, preserving comments, quoting, and key order in the rest of the file, so the resulting diff is just the changed entry. If you do edit by hand, the same validation rules apply: invalid files surface schema-backed errors at ingest time.

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Project context vs. semantic layer fixes

Both kinds of fix open a pull request, but they change different things and have different review costs.
Semantic layer fixProject context fix
What it changesYour dbt model YAML — renames a field, adds a description, adds a metric, fixes a join.A single entry in lightdash.project_context.yml.
Who else sees the changeEveryone querying the model, in Lightdash and downstream.AI agents only.
How the PR is builtA writeback agent runs in a sandbox against your dbt project and proposes the edit.Deterministic merge into the YAML file via the GitHub API — no sandbox.
When to use itThe data model itself is wrong, ambiguous, or under-described. The fix would help SQL users too, not just the agent.The data model is fine, but the agent is missing background knowledge — terminology, which table to prefer, business rules that aren’t expressible as dbt metadata.
ReversibilitySame as any dbt change — revert the PR.Delete or edit the entry in lightdash.project_context.yml.
A rule of thumb: if a new analyst joining the team would also benefit from the change, it’s probably a semantic layer fix. If only the agent needs to know it, it’s project context.

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Privacy and data handling

  • Reviews runs against agent turns inside your organization only.
  • Findings are stored in Lightdash alongside your other agent data and respect your existing project and admin permissions.
  • Disabling the toggle stops new collection immediately; it does not delete previously collected findings.
  • Evaluations — run a fixed set of prompts against your agent and grade the answers.
  • AI writeback — let an agent open a dbt pull request from chat.
  • Autopilot — scheduled agent that cleans up content and flags issues for review.