Assemble the monitoring records a review needs, carry each reading with the limit it was read against, and hold the packet for the qualified individual who reviews it and signs.
✓Assemble the review packet from the entries already recorded.
✓Carry each reading forward with the limit it was read against.
✓Test entries for completeness against the site's own clock.
✓Flag what a qualified individual should weigh, and hold.
Any write happens inside the boundaries agreed at implementation, never ahead of the reviewer.
Reviewing monitoring and corrective-action records.
Justifying record review beyond seven working days.
Reanalysing the food safety plan after a change.
Determining reanalysis may run past ninety days.
Example output
One monitoring entry, annotated
Everything the agent assembles is attached to the entry it was read from.
Review-packet output · single entryIllustrative example
Record
Entry as made
Observed value
Limit it was read against
Confidence
Who made the entry
Chill-step CCP log
Chill step held inside its limit for the whole of the run
38.2 °F
Chill-step critical limit
91%
Line operator, initialled on entry
As receivedTaken from the plant's own monitoring entries — nothing on this side is written by the agent.
Source records usedCCP monitoring logDeviation entryCalibration record
Why it stops hereThe reading is a fact; whether the lot is sound is a judgement the rule reserves to a person.
ActionSignCorrectSend to quality review
What the score decidesBelow the configured threshold the packet picks up a quality read before it.
Value
Where AI adds value
The same four claims, placed at the point in the workflow where each one applies.
Where the value landsValue 01 – 04
Every recordFrom the plant's own entries
03Assembly
Assemble from the entries
Draw on the entries already made, the limits in the plan and the rule set configured for the site.
01Approved path
Prepare it, the PCQI signs
Routine monitoring records arrive assembled, sourced and checked for gaps.
02Human review
Send the reviewer to the deviations
When a wrong entry surfaces after the lot has left, the retained trail shows what was read, what was flagged and who signed — corrective action and reanalysis start from there, with the same names on them.
04Build an evidence trail
The record, the limit it was read against and the qualified individual who reviewed it stay together.
Integrations
Typical integrations
Five system groups connect to the same agent. Which of them are in scope is decided in discovery.
Quality and food-safety systemsSafetyChain · Intelex TraceGains · SafetyCulture
Plant floor and historianOSIsoft PI · Ignition SCADA · line data historians
ERP and productionSAP · Infor · NetSuite Batch and MES records
Agent
QA and HACCP assistance
Reads the entries Assembles the packet Holds for the reviewer
Documents and recordsDocument capture · e-forms Record archives · retention sets
Integration availability depends on the client's existing systems and API access.
Agent controls
Six layers between the model and the signature
Each control wraps the one inside it. What a layer does not catch is named in the map below it.
L6 · Outermost — last line of defenceInward → L1 · closest to the model
L6Rollback / safe modeDrop the agent to data assembly when evaluation or production signals degrade.Roll back
L5Version monitoringTrack model, prompt, rule-set and plan-version changes.Track
L4TraceabilityRecord the entries, the limits, the flags, the corrections and the signature.Record
L3Qualified reviewHold the packet for a named qualified individual; the hold governs release, not whether the review was right.Gate
L2Scope guardrailsTest outputs against the held-act list and the site's rule set; a failure returns the packet. Author and reviewer are kept apart here, not merely advised apart.Restrict
L1Confidence thresholdsRoute low-confidence packets to a quality read before the reviewer sees them.Require review
Model corePacket prepared — entries, open gaps, flagged readings and confidence
L1 – L2Test whether a packet may stand
L3Puts the signature in a qualified person's hands
L4 – L5Keep the record and the limit behind it
L6Drops the agent to data assembly when signals degrade
How Nestack evaluates it
Evaluate the assembly workflow — not only the packet handed over.
Coverage runs the whole depth of the workflow, and every layer is cut by slice.
Surface — the packet the reviewer signs
Depth of coverage ▼
E1Final-output evaluationDid every assembled entry match the record it was read from?
E2Step-level evaluationDid the agent use the right plan version, rule set and review clock?
E3Tool evaluationDid it read and write the correct record and the correct field?
E4Confidence calibrationDo low-confidence packets actually attract more reviewer corrections?
E5Slice evaluationHow does performance change across specific record types?
E6Business outcomeHow many packets needed a reviewer correction, or a finding after shipment?
Floor — the record the plant answers for
Failure modes
Where each failure originates in the agent
Seven ways a packet goes wrong, placed by stage.
Agent lifecycleDirection of processing →
01 · Retrieval1 mode
AA-03
Superseded limit read
A limit is taken from a plan version that was later replaced.
Stage gathersMonitoring entries, limits, plan version and rule set
02 · Reasoning2 modes
AA-04
Wrong review clock
A seven-working-day window is applied at a plant that reviews before shipment.
AA-06
Boundary reading smoothed
A reading sitting on the limit is summarised as conforming.
Stage proposesAssembled entries, flagged readings and confidence
03 · Tool / write2 modes
AA-02
Packet released early
A packet moves on with flagged readings still unresolved.
AA-05
Duplicate packet
The same production record is assembled and routed twice.
Stage writesOnly where write access and approval policy allow it
04 · Output1 mode
AA-01
Reviewer is the author
The identity that made an entry is offered as its reviewer.
Stage returnsThe packet the qualified individual reviews and signs
05 · Change / Version1 mode
AA-07
Silent threshold drift
A model or rule change widens what the agent will assert.
Stage tracksModel, prompt, rule sets and limit configuration
Sev-1 · a held act was carried outSev-2 · a wrong entry reaches the reviewerSev-3 · source degrades, packet routes to review
Split the correction rate by record type before you rely on it — a headline that reads steady is usually a few cohorts carrying most of the rework. Nestack reports it by slice, not only in total.
Slice performance — reported separately, not only in aggregateIllustrative example
Slice
Failure rate
Lift
Lift vs. threshold
Status
Deviation and corrective actions
9.4%
3.6×
Review
New product, first production run
6.2%
2.4×
Review
Sites under more than one rule set
4.7%
1.8×
Watch
Routine monitoring records
1.8%
0.7×
Normal
Bar: reviewer-correction-rate lift vs. routine-record baseline · scale 0–4.0× · tick marks the 2.0× review threshold2 of 4 slices over threshold
Evidence-linked improvement
Every cycle closes by adding a test
A cycle closes when the failure is a regression case the next release has to pass. That suite is what the next record through review is measured against.
Improvement cycle · five stagesSwitchback — the path turns at Improve and returns at Learn
01Detect
Reviewer-correction rate rises in a record slice.
02Diagnose
The packets and the entries beneath them are read together until one cause is left standing.
03Improve
The change ships against a version, with the records that exposed it attached.
04Verify
Release is blocked until the affected regression cases pass again.
05Learn
The case joins the permanent suite and the plan's own notes.
Learn → DetectThe return edge. Next time, detection starts from a suite one case longer.
Typical build scope
Twelve workstreams across six weeks
The build scope read against the delivery timeline. Week structure follows the six-week plan — discovery, sources, review workflow, evaluation, integration, then production validation and handover.
WorkstreamWeek 1Week 2Week 3Week 4Week 5Week 6
01Review workflow discovery and boundary definition with your quality team.
02Quality, MES and plant source assessment.
03Rule set, plan version and review-clock mapping per site.
04Record ingestion and normalisation.
05Packet assembly and entry binding.
06Confidence scoring and deviation routing.
07Qualified-individual review workflow.
08Quality-system and record integration.
09Deviation and review-clock cases.
10Guardrails and signature controls.
11Record-trail instrumentation.
12Deployment, documentation and Agent Care handover.
12 workstreams · 6 weeks · bar shows the weeks a workstream is active — several run in parallelFinal scope and sequence confirmed in discovery
Engagement tiers
What each tier includes
Rows are the capabilities named in each tier's scope. Higher tiers include everything below them.
Capability✓ in scope · — not at this tierPilotOne plant, one lineProductionProduction quality systemsAdvancedMultiple plants / rule sets
Introduced at Pilot
Assembly to your plan and records✓✓✓
Qualified-individual review✓✓✓
Review-quality baseline✓✓✓
Introduced at Production
Reporting by process line—✓✓
Review workflow in your systems—✓✓
Approved write-back—✓✓
Quality-system integration—✓✓
Introduced at Advanced
More than one rule set——✓
Multi-stage quality approvals——✓
High record volume——✓
Multi-plant review controls——✓
Build priceFrom $5,000From $8,000Custom quote
Final build priceConfirmed after discovery based on integrations, workflow complexity, record volume, approval controls and deployment requirements.
Separate from buildBuild pricing is separate from recurring Agent Care, which covers managed monitoring, evaluations, incidents and verified improvements after launch.
What we need from you
What you bring, and what we build with it
Each input maps to a piece of build scope and a week in the delivery timeline.
You bringWe build with it
01Your record set and the fields a review needs→Record ingestion and field mappingWeek 1
02Representative signed record sets→Assembly baseline, limit extraction and entry bindingWeek 2
03Your plan versions, rule sets and review clocks→Rule set, plan version and review-clock mappingWeek 1
04Access to relevant APIs, feeds or exports→Quality, MES and plant assessment, then integration setupWeek 2
05Records you would not want signed→Deviation cases and failure-mode testingWeek 4
06What only a qualified individual may do→Confidence scoring, deviation routing, guardrails and signature controlsWeek 3
07Named qualified individuals to review packets→Review workflow, then pilot and production validationWeeks 5–6
Nothing else is requiredDeployment, documentation and Agent Care handover are ours.
Delivery timeline
Four phases across six weeks
Each phase sits on the weeks it actually occupies, and week 5 carries both evaluation and launch work.
PhaseW1W2W3W4W5W6
DiscoveryW1
BuildW2 – W3
EvaluateW4 – W5
Pilot & LaunchW5 – W6
Week focusW1Review workflow discovery, rule-set mapping and the automation boundaryW2Source integration and the assembly baselineW3Assembly workflow, confidence logic and review controlsW4Evaluation suite, held-act guardrails and failure-mode testingW5Quality-system integration, pilot records and targeted correctionsW6One production cycle reviewed under the PCQI, then Agent Care handover
Reading the bandBars are drawn over the weeks the work occupies. The fifth doubles because evaluation and launch overlap.
At the end of W6Validation closes on live records, and Agent Care picks up monitoring.
DurationSix-week plan shown · typical delivery 4–6 weeks depending on scope confirmed in discovery.
Next step · Food & Beverage AI agent
Build a QA and HACCP agent around your plant's review chain.
Show us your records, your plan versions and your rule sets. Your qualified individual reviews and your owner, operator or agent in charge signs — the agent only prepares what those two names go on.
