Autonomous in the loop. Accountable at the gates. An agentic offering by Plainsight

Autonomous in the loop. Accountable at the gates.

The agents document, design, build, test and operate on their own, but a named person signs off before each new stage begins. Three human gates turn an autonomous fleet into an accountable migration: assessment, design, and promotion.

Where the gates sit

Five stages. Three gates. One inner loop.

Each gate sits between two stages: the agents can't start the next stage until a person signs off the last one. Inside Build → Test → Operate, the agents iterate on their own, the gate comes once the suite is green.

01

Document

Documenters reconstruct the functional behavior of every legacy asset into the knowledge base; the Surveyor scores complexity and prioritizes the backlog.

Gate 1 Assessment
02

Architect

The Architect turns the knowledge base into a Target Design Spec, applying your naming, error-handling and orchestration standards.

Gate 2 Design
iterates until green
03

Build

Builders generate the assets for the chosen platform and flavor.

04

Test

Test agents and the Reconciler verify the generated assets against the documented legacy behavior.

05

Operate

Operators deploy and run in DEV; failures go back to the builders and the loop repeats until the suite is green.

Gate 3 Promotion → DEV · ACC · PRD
Gate 1 · Assessment
Reviewsthe knowledge base + complexity scorecard
Signed byyour data & migration leads
Unlocksthe Architect designs the target
Gate 1 approved · Assessment
The three gates

What each gate reviews, and what it unlocks.

Every gate gives a person a prepared artifact, a clear set of criteria, and a single decision: sign off, or send it back.

1GATE

Assessment sign-off

after the Document stage · signed by Your data & migration leads
Artifact reviewedthe knowledge base + complexity scorecard
What they're judgingcompleteness and accuracy of the documented behavior, the risk scores and drivers, and the prioritized migration backlog
  • Every in-scope asset is documented in the knowledge base
  • Documented behavior matches what the legacy assets actually do
  • Risk scores and drivers reflect reality
  • The backlog priority is agreed
Once signed, the Architect designs the target.
2GATE

Design sign-off

after the Architect stage · signed by Your architects & platform owners
Artifact reviewedthe Target Design Spec
What they're judgingworkload placement (Warehouse vs Lakehouse, SQL vs Spark), medallion mapping, naming, error handling, orchestration and security & governance grants
  • Workload placement fits your platform strategy
  • Naming, medallion and error-handling standards are yours
  • Security and governance grants are correct
  • The spec is approved as the build contract
Once signed, the builders generate the assets.
3GATE

Promotion sign-off

after the Operate stage · signed by Your data owners & release managers
Artifact reviewedthe validation report + iteration log
What they're judgingbenchmarks, the number of failure iterations, the severity of issues, the test suite and expectations, and the reconciliation delta
  • Tests and expectations pass
  • Reconciliation delta is zero or explained
  • The iteration count and issue severity are acceptable
  • Sign-off is recorded for DEV → ACC → PRD promotion
Once signed, promotion through your existing DevOps process.
Automated incremental improvement

Inside Gate 3: the loop that fixes itself.

Between the design gate and the promotion gate, there's no human in the inner loop. The Operator runs the build in DEV, the Test agents and the Reconciler flag what doesn't match the documented behavior, and the builders patch it: over and over, until the suite is green. Every iteration is logged.

Operator runs

Deploys to DEV and runs the pipelines for real, reading every failure.

Tests flag

Test agents and the Reconciler compare the output against the documented legacy behavior.

Builders patch

The fix is generated and the loop re-runs, no human in the inner loop.

Re-run until the suite is green, every iteration logged in the knowledge base
dwh_load_dimcustomer · iteration log build-test-operate
iter 1 row-count delta in SCD backfill: 1,284 rows short
iter 2 effective-dating off by one on late-arriving keys
iter 3 reconciler delta 0 · schema parity 124/124 · all expectations pass

Green on iteration 3: the human reviews the iterations, severity and tests at Gate 3.

What the human signs off at promotion

The loop is automatic. The verdict isn't.

When the suite is green, a person reviews the validation report before anything is promoted. They're not re-running the work, they're judging the evidence the loop produced:

  • Benchmarks and the reconciliation delta: zero, or explained
  • How many iterations it took to reach green
  • The severity of what failed along the way
  • The test suite and the data-quality expectations

Only then does it promote through your existing DEV → ACC → PRD process. Every iteration is recorded in the knowledge base, so the verdict is informed and auditable.

Validation report

run #0428 · for Gate 3 sign-off
Schema parity (source vs target) 124/124
Row-count reconciliation delta 0
Data-quality expectations all pass
SCD Type 2 effective dating ok
Dynamic SQL block review
Iterations to green 3
Awaiting Gate 3 sign-off, 1 item flagged for review
Why it matters

Speed from the agents. Accountability from your experts.

Nothing ships unsigned

No design is built and no asset is promoted without a named person's sign-off. The autonomy stops at the gate.

Auditable by design

Each asset's gates block records who approved what and when, a trail your governance and auditors can follow.

Cheap to correct

Issues surface at a gate, not in production. Sending a stage back early costs minutes, not a release.

See which agents work each stage →
Good questions

The validation gates, answered.

Who signs off at each gate?

Your people. The assessment is signed by your data and migration leads, the design by your architects and platform owners, and promotion by your data owners and release managers. The agents prepare the evidence; your experts make the call.

What happens if we reject at a gate?

Nothing proceeds. The stage re-runs with your feedback (re-document a misread asset, adjust the design, or send a build back into the loop) until you're satisfied. Catching it at a gate is far cheaper than catching it in UAT or production.

Are the sign-offs recorded?

Yes. Every knowledge-base entry carries a gates block recording the state (approved or pending) at each gate, so the trail is auditable and you always know what has been signed and what has not.

Does adding gates slow the migration down?

The agents do the heavy lifting continuously and autonomously inside the loop; the gates are decision points, not queues. You review prepared evidence (a scorecard, a design spec, a validation report) rather than reverse-engineering what happened.

Can we map gates to our own governance?

Yes. The three gates align to assessment, design and production promotion, and the reviewers and approval steps map to your existing roles and DevOps process: the fleet fits your governance; it doesn't replace it.

Let's talk

Keep your experts in control.

See the gates on your own estate: the assessment fills the knowledge base for a representative slice, and your team signs off Gate 1 before anything else begins.

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