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Customer Success AI agent · Expansion signals

Expansion Signal AI Agent

Name what an account did — usage measured against the entitlement it actually holds — and let the motive stay unnamed, then hand the signal to the growth manager who qualifies it.

4–6 weeksTypical delivery
Your stackDeployment
Usage firstGrowth manager
Agent CareAfter launch

What this agent does

Raises the signal, never qualifies it

In
01

A signal is raised, and the usage under it travels with it rather than being summarised away.

02

Usage crosses a line, and the line it crossed is named beside the entitlement record it came from.

Reason
03

A signal says what was observed, and it stops there instead of guessing at why anyone did it.

04

Usage climbs on retries, and the signal says so rather than reading a failing job as appetite.

05

An entitlement record is old, and the signal carries the day it was read instead of implying it is live.

Decide
06

A signal is raised on a trial, and the terms the customer was actually given are carried beside it.

07

Usage lands under a subsidiary, and the signal names the legal entity it was measured on.

Out
08

A signal cannot be attributed to anyone, and that is written up as a gap rather than assigned to a team.

09

Execute write actions only inside the approval boundaries agreed during implementation.

Product statement

Watching entitlement against use, raising the signal and showing the unknowns belong to the agent. Deciding an account is ready to buy belongs to a named growth manager, who qualifies it and owns that call.

Example workflow

One signal, usage to qualification

AgentHuman
1Usage and entitlement receivedProduct telemetry, seat and API records, entitlement terms, order forms and billing history
2Entitlement fixed and datedThe limits the contract sets, the limits the system enforces and the day each record was read
3Signal raisedThe observation, the usage under it, the entitlement it was measured against and confidence
4Controls appliedEntitlement checks, retry checks, attribution checks and signal confidence
No human action required

Stages 1 to 4 run unaided, and no customer is approached at any of them — the agent is observing, and the growth manager lane opens at the entitlement gate.

5DecisionSplits at the entitlement gate
Entitlement current

Goes to the named growth manager to qualify.

Anything stale

Adds a senior growth read first.

Growth manager review

The signal is held with its usage, the entitlement it was measured against and what it cannot say.

Accept · Annotate · Send to senior review
Accepted — by the named growth manager
6Account and expansion records updatedOnly where write access and records policy allow it
7Outcome evaluatedEntitlement accuracy, attribution quality, manager corrections and what review found
Corrections

Each growth manager correction is counted in the evaluation.

What should not run autonomously

Human approval stays in control

Outside the boundary — human approval required8 items
Qualifying a signal as an opportunity.
Pricing anything an account might buy.
Contacting a customer about their usage.
Deciding an account is ready to buy more.
Automation boundaryAgent acts unaided
Raise the signal and carry the usage under it.
Separate usage that came from retries from usage that came from people.
Mark the day each entitlement record was read.
State plainly what the signal cannot say about why usage moved.
No customer is approached except by a named growth manager, inside the agreed boundaries.
Judging why usage actually moved.
Telling a seller an account will expand.
Choosing which limit an account is sold up to.
Changes to the thresholds, terms or entitlements.

Example output

One expansion signal, annotated

This serves a growth team who may have to explain to an account team why a signal was raised at all; below is one signal exactly as the agent leaves it.

Expansion signal · single accountIllustrative example
Account
Recorded as
Usage
Evidence of record
Confidence
Held for
Mid-market, seat-based plan
Raised, entitlement dated
Usage carried
Entitlement read 3 August 2026
Held unqualified
The named growth manager
As receivedTaken from the usage recorded and the entitlement it was measured on, and it concludes nothing beyond that.
What the record holds Seat records API call volume Entitlement terms
Why no approach hereCalling a signal an opportunity is a judgement the manager makes.
ActionAcceptAnnotateSend to senior review
What the score decidesBelow the configured threshold a signal gets a senior read before the manager sees 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 signalFrom the usage under it
03Evidence

Where the entitlement comes from

An ancillary-offer agent in travel and hospitality presents an offer to a guest at the point of sale. This raises a signal for an internal team and presents nothing to anyone.

01Approved path

Usage is not intent

An account near a limit may be buying more, leaving, hearing from its own procurement team or refactoring what it built, and the usage reads alike in all four.

02Human review

What was checked, and not found

Checked and not found: no statute or published standard governs when a vendor may read its own telemetry for commercial ends, so there is no external rule to point at and this page claims none.

04Build an evidence trail

The signal, the usage under it and the manager who qualified it stay together.

Integrations

Typical integrations

Five system groups connect to the same agent. Which of them are in scope is decided in discovery.

Product telemetryPendo · Amplitude · Snowplow
Seat activity and API call volume
Entitlement and billingZuora · Chargebee · Stripe
Plan limits and overage terms
CRM and account recordsSalesforce · HubSpot · Gainsight
Contract terms and account tiering

Agent

Expansion signal detection

Reads the usage
Raises the signal
Holds for the manager

Support and ticketingZendesk · Statuspage · Jira
Throttling errors and limit complaints
Observability & evaluationOpenTelemetry · Langfuse
Supported monitoring/evaluation sources

Integration availability depends on the client's existing systems and API access.

Agent controls

Six assays between the model and the manager

Six assays in sequence, the last the sharpest. What assays clean is drawn in the map below.

L6 · Outermost — last line of defenceInward → L1 · closest to the model
L6Rollback / safe modeStop raising signals altogether when evaluation or production signals degrade.Roll back
L5Version monitoringTrack model, prompt and threshold rules, and note the version each signal was raised under.Track
L4TraceabilityRecord each signal, the usage under it, the entitlement it used and every read of the record.Record
L3Manager releaseHold the signal for a named growth manager; the hold governs release, not whether the signal is right.Gate
L2Entitlement checksTest each signal against the entitlement record it used, and refuse one measured on a stale record.Restrict
L1Confidence thresholdsRoute a thin signal to a senior growth read before it reaches a manager.Require review
Model coreSignal raised — the usage, the entitlement, the attribution and confidence
L1 – L2Test whether a signal may stand
L3Leaves the qualification to a manager
L4 – L5Keep the signal and the usage behind it
L6Raises no signal at all when signals degrade

How Nestack evaluates it

Evaluate the whole detection — not only the signal that comes out.

Coverage runs the whole depth of the workflow, and every layer is cut by slice.

Surface — the signal a manager works
Depth of coverage ▼
E1Final-output evaluationDid the signal record the usage and the entitlement it was actually built on?
E2Step-level evaluationDid the agent read the live entitlement, the right period and the right account?
E3Tool evaluationDid it read and write the correct account and the correct signal?
E4Confidence calibrationDo low-confidence signals actually attract more manager corrections?
E5Slice evaluationHow does performance change across specific product lines?
E6Business outcomeHow many signals needed a correction before the manager accepted?
Floor — the usage a signal rests on

Failure modes

Where each failure originates in the agent

Seven failure modes, each set at the stage where it first surfaces.

Agent lifecycleDirection of processing →
01 · Retrieval1 mode
NT-03

Stale entitlement read

The record read is not the one now in force.

Stage gathersThe usage, the terms, the seats and the dates
02 · Reasoning2 modes
NT-04

Signal raised on a retry storm

Usage climbs because a job keeps failing.

NT-06

Motive asserted, not observed

A signal states why, having seen only what.

Stage proposesThe usage, the entitlement and what is unknown
03 · Tool / write2 modes
NT-02

Thin signal passed forward

A signal moves on without the senior read.

NT-05

Signal bound to wrong entity

The usage is filed against another subsidiary.

Stage writesOnly where write access and approval policy allow it
04 · Output1 mode
NT-01

Ceiling hit, nobody was buying

One script against the API filled the seats.

Stage returnsThe signal a manager works and a seller acts on
05 · Change / Version1 mode
NT-07

Silent threshold drift

A limit moves while the stored signal keeps the old one.

Stage tracksModel, prompt, threshold rules and term changes
Sev-1 · the agent approaches a customer Sev-2 · a stale signal reaches a seller Sev-3 · usage degrades, no signal raised

Affected slices

API-driven accounts absorb the corrections

A product-level qualification figure can read clean while accounts driven by API use carry most of the corrections. Nestack reports the correction rate by product line, not only in total.

Slice performance — reported separately, not only in aggregateIllustrative example
SliceFailure rateLift Lift vs. thresholdStatus
Accounts with API-driven use8.6%3.7× Review
Multi-entitlement estates6.1%2.6× Review
Accounts inside a trial3.8%1.6× Watch
Established single-plan accounts2.1%0.9× Normal
Bar: correction-rate lift vs. single-plan-account baseline · scale 0–4.0× · tick marks the 2.0× review threshold 2 of 4 slices over threshold

Evidence-linked improvement

What a scripted seat ceiling costs

The loop shuts when the signal raised on nothing is a standing case. That suite is what the next signal qualified is measured against.

Improvement cycle · five stagesSwitchback — the path turns at Improve and returns at Learn
01Detect

Correction rate rises on accounts with API-driven use.

02Diagnose

The team that hit the seat ceiling because one person wrote a script against the API is worked backwards until one cause is left standing.

03Improve

A change goes out numbered, and the signals that forced it travel with it.

04Verify

Nothing ships while one signal case remains red.

05Learn

The case is kept, and the qualification rules are amended in that same commit.

Learn → DetectThe return edge. The next signal raised is measured against 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, signal detection, evaluation, integration, then production validation and handover.

Workstream Week 1Week 2Week 3Week 4Week 5Week 6
01Entitlement-inventory and automation-boundary work.
02Telemetry, entitlement and billing sources.
03Usage-to-entitlement and threshold-source mapping.
04Usage ingestion and entitlement checks.
05Entitlement, threshold and account binding.
06Attribution scoring and review routing.
07Growth manager review workflow.
08Entitlement-system integration.
09Signal and qualification cases.
10Guardrails and qualification controls.
11Signal-trail instrumentation.
12Deployment, documentation and Agent Care handover.
12 workstreams · 6 weeks · bar shows the weeks a workstream is active — several run in parallel Final 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 tier PilotOne product line, one quarter ProductionProduction growth workflow AdvancedMultiple products / regions
Introduced at Pilot
Signal detection to your entitlements
Named growth manager release
Entitlement-and-usage baseline
Introduced at Production
Reporting by product
Manager review workflow in your systems
Approved write-back
Entitlement-system integration
Introduced at Advanced
Multi-entitlement rule sets
Cross-product signal packs
Large account estates
Multi-entitlement signal controls
Build price From $5,000 From $8,000 Custom quote
Final build priceConfirmed after discovery based on integrations, workflow complexity, entitlement 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 live accounts and the entitlement each holds Usage capture and entitlement checksWeek 1
02Representative accounts, including ones that churned Entitlement binding, threshold logic and the signal baselineWeek 2
03Your expansion cadence and the managers it names Entitlement mapping, threshold review and the automation boundaryWeek 1
04Access to relevant APIs, feeds or exports Telemetry, entitlement and billing source assessment, then integration setupWeek 2
05Signals you would not want qualified Qualification cases and the evaluation runWeek 4
06What no signal may promise Attribution scoring, review routing, guardrails and release controlsWeek 3
07A named growth manager who qualifies it Release to the named growth manager, then pilot and production validationWeeks 5–6
Nothing else is required Deployment, documentation and Agent Care handover are ours.

Delivery timeline

Four phases across six weeks

Six weeks measured out rather than six columns ruled; the fifth doubles up because the work does.

Phase W1W2W3W4W5W6
Discovery W1
Build W2 – W3
Evaluate W4 – W5
Pilot & Launch W5 – W6
Week focus W1Entitlement discovery, threshold review and the automation boundary W2Source integration and the entitlement-and-usage baseline W3Signal detection, attribution logic and release controls W4Evaluation suite, signal cases and the qualification run W5Growth-platform integration, pilot signals and targeted corrections W6One expansion quarter run under the growth lead, then Agent Care handover
Reading the bandA bar covers only the weeks its own work is named for, and week five carries two by design.
At the end of W6When the signal record validates, Agent Care assumes the agent.
DurationSix-week plan shown · typical delivery 4–6 weeks depending on scope confirmed in discovery.

Next step · Customer Success AI agent

Build an expansion signal agent around the ceiling your last account hit without telling anyone.

Show us one product line and the entitlement each account on it holds. Which of them sits near a limit nobody has told them about — and if nobody can answer that today, the limit is being watched by you and not by them. A signal that names a motive comes back as a finding.

Nestack Agents · Expansion signalsAGT-CX-05 · Agent Care available after launch