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Customer Success AI agent · Sales handoff

Sales Handoff AI Agent

Recover the commitment that lives in no document — the call it was made in, who made it, what was said — and put it to a named delivery owner to accept or decline.

4–6 weeksTypical delivery
Your stackDeployment
Promises firstNamed owner
Agent CareAfter launch

What this agent does

Records the commitment, never accepts it

In
01

A deal closes, and the brief is drawn from the deal record, the call notes and the correspondence behind them.

02

A commitment is made in the last call before signature, and it is recorded with the call it was made in.

Reason
03

A promise appears in no contract and no order form, and the brief carries it rather than losing it.

04

A commitment is written down, and writing it down is not the company agreeing to it.

05

A reason the customer bought sits in the head of one rep, and it crosses over with the paperwork or not at all.

Decide
06

A worry the customer raised quietly is carried into the brief, where the delivery team can see it early.

07

An expansion is handed over as new business, and the history the previous team learned is pulled back in.

Out
08

A commitment cannot be corroborated anywhere, and it is marked unverified rather than quietly dropped.

09

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

Product statement

Assembling the brief, surfacing the commitments and marking what could not be corroborated belong to the agent. Acceptance belongs to a named delivery owner, who takes the handover on and answers for it.

Example workflow

One handover, closed deal to accepted brief

AgentHuman
1Closed deal receivedOpportunity records, call notes, meeting summaries, email threads or signed order forms
2Commitments and context fixedThe commitments found, where each was made, the account context and whoever must decide on them
3Brief assembled per handoverThe commitments surfaced, the ones nothing corroborates, the context carried and confidence
4Controls appliedSource checks, deal-binding checks, duplication checks and matching confidence
No human action required

Stages 1 to 4 run unaided, and nothing is promised at any of them — the agent is assembling, and the delivery owner lane opens at the acceptance gate.

5DecisionSplits at the acceptance gate
Commitments corroborated

Goes to the named delivery owner to accept.

Anything uncorroborated

Adds a sales lead read first.

Delivery owner review

The brief is held with its commitments, their sources and what nothing could corroborate.

Accept brief · Decline commitment · Send to sales review
Accepted — by the named delivery owner
6CRM and delivery records updatedOnly where write access and records policy allow it
7Outcome evaluatedCommitment coverage, decisions taken, owner corrections and what review found
Corrections

Each delivery owner correction is counted in the evaluation.

What should not run autonomously

Human approval stays in control

Outside the boundary — human approval required8 items
Agreeing a commitment on behalf of the company.
Deciding that something promised will be delivered.
Closing a handover between sales and delivery.
Committing a delivery date to a customer.
Automation boundaryAgent acts unaided
Assemble the brief from the deal record and its calls.
Surface each commitment beside the place it was made.
Mark the commitments that no record anywhere on file corroborates.
Carry the account history into a renewal or expansion handover.
No commitment is agreed except by a named delivery owner, inside the agreed boundaries.
Judging whether a commitment can be honoured.
Telling a customer what they were promised holds.
Choosing which commitments a brief may drop.
Changes to the brief, the owners or the acceptance rules.

Example output

One handover commitment, annotated

This serves a delivery team who may be asked in month three what was promised before signature; below is one commitment exactly as the agent leaves it.

Handover brief · single closed dealIllustrative example
Commitment
Recorded as
Deal
Evidence of record
Confidence
Held for
Integration ready in the second quarter
Said in the call, in no document
Pre-signature call
Call note, 3 August 2026
Held undecided
The named delivery owner, by name
As receivedTaken from the call note and the thread that followed it, and it claims nothing beyond them.
What the record holds Call note Email thread Deal record
Why no acceptance hereAgreeing to a commitment is a call the named delivery owner makes.
ActionAccept briefDecline commitmentSend to sales review
What the score decidesBelow the configured threshold a brief gets a sales read before the owner 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 handoverFrom the deal that closed it
03Commitments

Where each commitment was made

Handover names a shift change in operations and an escalation in support; this is neither. It is the transfer from sales to delivery after signature, and what was promised on the way to it.

01Approved path

A promise travels with the deal

The contract crosses over cleanly. The promise made in a call, the politics inside the account and the reason they bought do not, unless somebody writes them down first.

02Human review

What was checked, and not found

Checked and not found in any document on file: the integration date a rep gave in the last call before signature. The customer onboarding agent owns the plan and the milestones on it; this agent owns what was promised and who accepted it.

04Build an evidence trail

The brief, the commitment recorded in it and the owner who accepted it stay together.

Integrations

Typical integrations

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

CRM and deal recordsSalesforce · HubSpot · Dynamics
Opportunity records and owners
Calls and meeting notesGong · Chorus · Fireflies
What was said before signature
Contracts and order formsDocuSign · Ironclad · order forms
What the signed paperwork sets out

Agent

Sales-to-delivery handover

Reads the deal
Assembles the brief
Holds for the owner

CorrespondenceMailboxes · shared threads
The exchanges either side of signature
Observability & evaluationOpenTelemetry · Langfuse
Supported monitoring/evaluation sources

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

Agent controls

Six relays between the model and the owner

Six relays along one wire, the last the surest. What carries on is drawn in the map below.

L6 · Outermost — last line of defenceInward → L1 · closest to the model
L6Rollback / safe modeNarrow the agent to commitment listing when evaluation or production signals degrade.Roll back
L5Version monitoringTrack model, prompt and acceptance rules, and note the version each brief was assembled under.Track
L4TraceabilityRecord each brief, the commitments in it, the source under each and every read of the file.Record
L3Handover releaseHold the brief for a named delivery owner; the hold governs release, not whether a commitment is sound.Gate
L2Source guardrailsTest each commitment against the record it was drawn from, and return any that names no source.Restrict
L1Confidence thresholdsRoute an uncorroborated commitment to a sales read before it reaches the owner.Require review
Model coreBrief assembled — the commitments, their sources, what is uncorroborated and confidence
L1 – L2Test whether a brief may stand
L3Leaves the acceptance to a named delivery owner
L4 – L5Keep the brief and the commitment behind it
L6Holds the brief unsent when signals degrade

How Nestack evaluates it

Evaluate the whole handover — not only the brief that comes out of it.

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

Surface — the brief a delivery team works from
Depth of coverage ▼
E1Final-output evaluationDid the brief record the source of each commitment it carries?
E2Step-level evaluationDid the agent read the right deal, the right calls and the current records?
E3Tool evaluationDid it read and write the correct deal and the correct handover?
E4Confidence calibrationDo low-confidence commitments actually attract more owner corrections?
E5Slice evaluationHow does performance change across specific handover types?
E6Business outcomeHow many briefs needed a correction before the owner accepted?
Floor — the deal a brief rests on

Failure modes

Where each failure originates in the agent

Seven failure modes, set at the stage each one first shows itself.

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

Pre-signature call unread

The call carrying the promise sits outside the read.

Stage gathersThe deals, the calls, the threads and the terms
02 · Reasoning2 modes
NZ-04

Expansion read as new business

Account history is left behind at the handover.

NZ-06

Contract restated as brief

The brief repeats the paperwork and adds nothing.

Stage proposesThe commitments, the sources and the confidence
03 · Tool / write2 modes
NZ-02

Uncorroborated brief passed on

A brief moves on without the sales read.

NZ-05

Commitment bound to wrong deal

The promise is filed against another deal.

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

Surfaced, never decided

A commitment sits with nobody accepting or declining it.

Stage returnsThe brief a delivery team opens and works from
05 · Change / Version1 mode
NZ-07

Silent owner departure

The owner who accepted the brief has since left.

Stage tracksModel, prompt, source rules and brief owners
Sev-1 · a commitment agreed by the agent Sev-2 · a promise lost between the teams Sev-3 · sources degrade, brief held back

Affected slices

Verbal-only commitments absorb the corrections

A handover-level commitment-coverage figure can read clean while verbal-only commitments carry most of the rework. Nestack reports the correction rate by handover, not only in total.

Slice performance — reported separately, not only in aggregateIllustrative example
SliceFailure rateLift Lift vs. thresholdStatus
Verbal-only commitments8.1%3.7× Review
Multi-team handovers5.8%2.6× Review
Expansions and renewals3.6%1.6× Watch
Standard new-business deals1.5%0.7× Normal
Bar: correction-rate lift vs. standard-new-business baseline · scale 0–4.0× · tick marks the 2.0× review threshold 2 of 4 slices over threshold

Evidence-linked improvement

What an unwritten promise costs

A loop ends when the commitment lost in handover is a standing case. That suite is what the next brief accepted is measured against.

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

Correction rate rises on verbal-only commitments.

02Diagnose

The thing promised in the last call before signature, appearing in no contract, no order form and no ticket, is worked backwards until one cause is left standing.

03Improve

The change goes out numbered, and the briefs that forced it travel attached.

04Verify

One brief case still failing holds the release where it is.

05Learn

The case stays on, and the acceptance rules are amended in the same commit.

Learn → DetectThe return edge. The next brief accepted runs 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, brief assembly, evaluation, integration, then production validation and handover.

Workstream Week 1Week 2Week 3Week 4Week 5Week 6
01Commitment-acceptance and boundary definition.
02Deal, call and correspondence sources.
03Commitment-to-source and deal-coverage mapping.
04Deal and call-note ingestion.
05Commitment, source and owner binding.
06Corroboration scoring and review routing.
07Delivery owner acceptance workflow.
08CRM-opportunity integration.
09Commitment and acceptance cases.
10Guardrails and transfer controls.
11Brief-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 team, one handover flow ProductionProduction handover workflow AdvancedMultiple teams / regions
Introduced at Pilot
Brief assembly to your deal record
Named delivery owner acceptance
Opportunity-record baseline
Introduced at Production
Reporting by handover
Owner review workflow in your systems
Approved write-back
CRM-opportunity integration
Introduced at Advanced
Multi-product handovers
Cross-team handover packs
Large deal volumes
Multi-team transfer controls
Build price From $5,000 From $8,000 Custom quote
Final build priceConfirmed after discovery based on integrations, workflow complexity, deal 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 closed deals and the team each one is handed to Commitment capture and source bindingWeek 1
02Representative handovers and the calls that preceded them Source binding, corroboration logic and the brief baselineWeek 2
03Your handover cadence and the delivery owners it names Commitment mapping, source rules and the automation boundaryWeek 1
04Access to relevant APIs, feeds or exports Deal, call and correspondence source assessment, then integration setupWeek 2
05Briefs you would not want reopened Acceptance cases and the evaluation roundWeek 4
06What no brief may guarantee Corroboration scoring, review routing, guardrails and release controlsWeek 3
07A named delivery owner who accepts the brief Release to the named owner, 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

Where a pair shares the fifth week, that pair really runs together; nothing here is filling space.

Phase W1W2W3W4W5W6
Discovery W1
Build W2 – W3
Evaluate W4 – W5
Pilot & Launch W5 – W6
Week focus W1Commitment discovery, source rules and the automation boundary W2Source integration and the opportunity-record baseline W3Brief assembly, corroboration logic and release controls W4Evaluation suite, commitment cases and failure-mode testing W5CRM integration, pilot handovers and targeted corrections W6One handover cycle run under the sales lead, then Agent Care handover
Reading the bandEach bar covers only the weeks its own work is named for, and week five is shared by design.
At the end of W6When the brief record validates, Agent Care picks the agent up.
DurationSix-week plan shown · typical delivery 4–6 weeks depending on scope confirmed in discovery.

Next step · Customer Success AI agent

Build a sales handoff agent around the promise your last contract never carried.

Show us one closed deal and the handover brief that followed it. If the delivery team learned what was promised only when the customer raised it months later, the handover cost you that whole stretch. A commitment recorded and declined beats one nobody wrote down.

Nestack Agents · Sales handoffAGT-CX-09 · Agent Care available after launch