StackOne
StackOne is an AI-powered embedded integration platform as a service (iPaaS) designed to simplify and accelerate how SaaS vendors and AI agents connect with enterprise software. It combines a proprietary LLM-based agent with a real-time execution engine to automate and manage integrations no need for manual API wiring or data syncing.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles StackOne the way a machine reads it — 274 machine-readable artifacts across 33 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — StackOne scores 52.8/100 (developing), with a separate agent-readiness read of 37/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
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How we profile StackOne
Each block below is one kind of artifact we hold for StackOne. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 33
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
StackOne Unified HRIS API
StackOne Unified HRIS API provides a single, standardized interface to interact with multiple HR information system providers, normalizing data models for employee data, shifts,...
StackOne Unified ATS API
StackOne Unified ATS API standardizes recruitment workflows across applicant tracking system providers, providing consistent data models for candidates, job postings, applicatio...
StackOne Unified CRM API
StackOne Unified CRM API provides a standardized interface for managing customer contacts, accounts, and opportunities across multiple CRM platforms, ensuring a consistent view ...
StackOne Unified LMS API
StackOne Unified LMS API standardizes learning management across platforms, streamlining course delivery, user progress tracking, content management, and assignments with consis...
StackOne Unified IAM API
StackOne Unified IAM API provides a standardized interface for identity and access management across providers, with comprehensive user management, role and permission mapping, ...
StackOne Unified Documents API
StackOne Unified Documents API provides a standardized interface for file and knowledge management across platforms like Google Drive, SharePoint, Dropbox, and Box, with consist...
StackOne Unified Marketing API
StackOne Unified Marketing API standardizes campaign management across platforms, streamlining messages (SMS, Email, Push), campaigns, templates, and more with consistent endpoi...
StackOne Unified Ticketing API
StackOne Unified Ticketing API standardizes support workflows across helpdesk platforms, with consistent data models for ticket management, comments, and status tracking.
StackOne Unified Messaging API
StackOne Unified Messaging API standardizes communication workflows across platforms, with consistent data models for conversations, message delivery, and participant management.
StackOne Unified Screening API
StackOne Unified Screening API standardizes candidate verification across platforms, streamlining background checks, assessments, and screening workflows with consistent data mo...
StackOne Platform API
StackOne Platform API serves as the control plane for managing accounts, executing actions, controlling integrations, discovering connectors, monitoring and debugging via logs, ...
StackOne Accounts API
The Accounts API from StackOne — 5 operation(s) for accounts.
StackOne Applications API
The Applications API from StackOne — 4 operation(s) for applications.
StackOne Campaigns API
The Campaigns API from StackOne — 2 operation(s) for campaigns.
StackOne Candidates API
The Candidates API from StackOne — 4 operation(s) for candidates.
StackOne Companies API
The Companies API from StackOne — 2 operation(s) for companies.
StackOne Connect Sessions API
The Connect Sessions API from StackOne — 2 operation(s) for connect sessions.
StackOne Contacts API
The Contacts API from StackOne — 2 operation(s) for contacts.
StackOne Departments API
The Departments API from StackOne — 2 operation(s) for departments.
StackOne Employees API
The Employees API from StackOne — 4 operation(s) for employees.
StackOne Employments API
The Employments API from StackOne — 2 operation(s) for employments.
StackOne Interview Stages API
The Interview Stages API from StackOne — 2 operation(s) for interview stages.
StackOne Interviews API
The Interviews API from StackOne — 2 operation(s) for interviews.
StackOne Job Postings API
The Job Postings API from StackOne — 2 operation(s) for job postings.
StackOne Jobs API
The Jobs API from StackOne — 2 operation(s) for jobs.
StackOne Lists API
The Lists API from StackOne — 2 operation(s) for lists.
StackOne Locations API
The Locations API from StackOne — 4 operation(s) for locations.
StackOne Offers API
The Offers API from StackOne — 2 operation(s) for offers.
StackOne Proxy API
The Proxy API from StackOne — 1 operation(s) for proxy.
StackOne Rejected Reasons API
The Rejected Reasons API from StackOne — 2 operation(s) for rejected reasons.
StackOne Templates API
The Templates API from StackOne — 6 operation(s) for templates.
StackOne Time Off API
The Time Off API from StackOne — 2 operation(s) for time off.
StackOne Users API
The Users API from StackOne — 2 operation(s) for users.
Scroll within the panel for all 33 ·
Postman Collections 22
A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.
Ready-to-run Postman collections for exercising this provider's APIs.
Marketing Accounts API
POSTMANMarketing Accounts Jobs API
POSTMANMarketing Accounts Lists API
POSTMANMarketing Accounts Proxy API
POSTMANMarketing Accounts Users API
POSTMANScroll within the panel for all 22 ·
Open Collections 24
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONMarketing Accounts API
OPEN COLLECTIONMarketing Accounts Applications API
OPEN COLLECTIONMarketing Accounts Campaigns API
OPEN COLLECTIONMarketing Accounts Candidates API
OPEN COLLECTIONMarketing Accounts Companies API
OPEN COLLECTIONMarketing Accounts Connect Sessions API
OPEN COLLECTIONMarketing Accounts Contacts API
OPEN COLLECTIONMarketing Accounts Departments API
OPEN COLLECTIONMarketing Accounts Employees API
OPEN COLLECTIONMarketing Accounts Employments API
OPEN COLLECTIONMarketing Accounts Interview Stages API
OPEN COLLECTIONMarketing Accounts Interviews API
OPEN COLLECTIONMarketing Accounts Job Postings API
OPEN COLLECTIONMarketing Accounts Jobs API
OPEN COLLECTIONMarketing Accounts Lists API
OPEN COLLECTIONMarketing Accounts Locations API
OPEN COLLECTIONMarketing Accounts Offers API
OPEN COLLECTIONMarketing Accounts Proxy API
OPEN COLLECTIONMarketing Accounts Rejected Reasons API
OPEN COLLECTIONMarketing Accounts Templates API
OPEN COLLECTIONMarketing Accounts Time Off API
OPEN COLLECTIONMarketing Accounts Users API
OPEN COLLECTIONMarketing
OPEN COLLECTIONScroll within the panel for all 24 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Stackone Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Stackone Finops
FINOPSFeatures 34
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
Unified APIs
Platform APIs
Integration Hub
Authentication Links
API Keys
Request Logs
Webhooks
Manage Integrations
Manage Projects
Manage Organizations
Custom Unified Fields
Liberaries
SDKs
Advanced Parameters
Pagination
StackOne Identifiers
Rate Limiting
OpenAPI Tools
Tool Filtering
Artificial Intelligence
RAG
SLA Guaranteed Integrations
Native Webhooks
Synthetic Webhooks
Authentication UI
Multi-Region
Hybrid Deployment
No PII Stored
MCP Server
A2A Protocol
Actions API
Connector Builder
Proxy Requests
Sandbox Environments
Scroll within the panel for all 34 ·
Semantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Stackone Context
JSON-LDSpectral Rules 2
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
StackOne API Rules
SPECTRALStackOne API Rules
SPECTRALJSON Schema 139
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
Account
JSON SCHEMAAccountAddress
JSON SCHEMAAccountResult
JSON SCHEMAAccountsPaginated
JSON SCHEMAAnswer
JSON SCHEMAAnswerEnum
JSON SCHEMAApplication
JSON SCHEMAApplicationAttachment
JSON SCHEMAApplicationCandidate
JSON SCHEMAApplicationResult
JSON SCHEMAApplicationsPaginated
JSON SCHEMAApplicationStatusEnum
JSON SCHEMAAtsCreateApplicationRequestDto
JSON SCHEMAAtsCreateCandidateRequestDto
JSON SCHEMAAtsCreateNotesRequestDto
JSON SCHEMAAtsCreateOfferRequestDto
JSON SCHEMAATSLocation
JSON SCHEMAATSLocationResult
JSON SCHEMAATSLocationsPaginated
JSON SCHEMAAtsUpdateApplicationRequestDto
JSON SCHEMAAtsUpdateCandidatesRequestDto
JSON SCHEMAAttachmentType
JSON SCHEMACampaign
JSON SCHEMACampaignResult
JSON SCHEMACampaignsPaginated
JSON SCHEMAStackOne Candidate
JSON SCHEMACandidateEmail
JSON SCHEMACandidateResult
JSON SCHEMACandidatesPaginated
JSON SCHEMACompaniesPaginated
JSON SCHEMACompany
JSON SCHEMACompanyResult
JSON SCHEMACompensation
JSON SCHEMAConnectSession
JSON SCHEMAConnectSessionAuthenticate
JSON SCHEMAConnectSessionCreate
JSON SCHEMAConnectSessionToken
JSON SCHEMAContact
JSON SCHEMAContactResult
JSON SCHEMAContactsPaginated
JSON SCHEMAContent
JSON SCHEMACountryCodeEnum
JSON SCHEMACreateCandidateNoteResult
JSON SCHEMACreateEmployeeResult
JSON SCHEMACreateOfferResult
JSON SCHEMACreateResult
JSON SCHEMACreateTemplateResult
JSON SCHEMACreateTimeOffResult
JSON SCHEMACrmCreateContactRequestDto
JSON SCHEMADepartment
JSON SCHEMADepartmentResult
JSON SCHEMADepartmentsPaginated
JSON SCHEMAEmailMessageContents
JSON SCHEMAEmailMessages
JSON SCHEMAStackOne Employee
JSON SCHEMAEmployeeCustomFields
JSON SCHEMAEmployeeCustomFieldTypeEnum
JSON SCHEMAEmployeeResult
JSON SCHEMAEmployeesPaginated
JSON SCHEMAEmployment
JSON SCHEMAEmploymentResult
JSON SCHEMAEmploymentScheduleTypeEnum
JSON SCHEMAEmploymentsPaginated
JSON SCHEMAEmploymentStatusEnum
JSON SCHEMAEmploymentTypeEnum
JSON SCHEMAEthnicityEnum
JSON SCHEMAGenderEnum
JSON SCHEMAHiringTeam
JSON SCHEMAHrisCreateEmployeeRequestDto
JSON SCHEMAHrisCreateTimeOffRequestDto
JSON SCHEMAHRISLocation
JSON SCHEMAHRISLocationResult
JSON SCHEMAHrisLocationsCreateRequestDto
JSON SCHEMAHRISLocationsPaginated
JSON SCHEMAImage
JSON SCHEMAInterview
JSON SCHEMAInterviewer
JSON SCHEMAInterviewPart
JSON SCHEMAInterviewsPaginated
JSON SCHEMAInterviewsResult
JSON SCHEMAInterviewStage
JSON SCHEMAInterviewStageResult
JSON SCHEMAInterviewStagesPaginated
JSON SCHEMAInterviewStatusEnum
JSON SCHEMAISO3166_2SubDivisionEnum
JSON SCHEMAJob
JSON SCHEMAJobPosting
JSON SCHEMAJobPostingResult
JSON SCHEMAJobPostingsPaginated
JSON SCHEMAJobResult
JSON SCHEMAJobsPaginated
JSON SCHEMAJobStatusEnum
JSON SCHEMALinkedAccount
JSON SCHEMALinkedAccountMeta
JSON SCHEMAList
JSON SCHEMAListResult
JSON SCHEMAListsPaginated
JSON SCHEMAListTypeEnum
JSON SCHEMALocation
JSON SCHEMALocationTypeEnum
JSON SCHEMAMaritalStatusEnum
JSON SCHEMAMarketingCreateEmailTemplateRequestDto
JSON SCHEMAMarketingCreatePushTemplateRequestDto
JSON SCHEMAMarketingCreateTemplateRequestDto
JSON SCHEMAMessage
JSON SCHEMAMessageTypeEnum
JSON SCHEMANote
JSON SCHEMANoteResult
JSON SCHEMANotesPaginated
JSON SCHEMANotesVisibilityEnum
JSON SCHEMAOffer
JSON SCHEMAOfferHistory
JSON SCHEMAOffersPaginated
JSON SCHEMAOffersResult
JSON SCHEMAOfferStatusEnum
JSON SCHEMAPayFrequencyEnum
JSON SCHEMAPayPeriodEnum
JSON SCHEMAProxyRequestBody
JSON SCHEMAPushMessageContents
JSON SCHEMAPushMessages
JSON SCHEMAQuestionnaire
JSON SCHEMARejectedReason
JSON SCHEMARejectedReasonResult
JSON SCHEMARejectedReasonsPaginated
JSON SCHEMARejectedReasonTypeEnum
JSON SCHEMASmsMessageContents
JSON SCHEMASocialLink
JSON SCHEMATemplate
JSON SCHEMATemplateResult
JSON SCHEMATemplatesPaginated
JSON SCHEMATimeOff
JSON SCHEMATimeOffPaginated
JSON SCHEMATimeOffResult
JSON SCHEMATimeOffStatusEnum
JSON SCHEMATimeOffTypeEnum
JSON SCHEMAUpdateResult
JSON SCHEMAUser
JSON SCHEMAUserResult
JSON SCHEMAUsersPaginated
JSON SCHEMAScroll within the panel for all 139 ·
JSON Structure 2
JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.
JSON Structure definitions describing this provider's data shapes.
Stackone Employee Structure
JSON STRUCTUREStackone Structure
JSON STRUCTUREExamples 1
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Use Cases 9
What developers actually build with this provider — captured so the catalogue answers 'what is this for', not just 'what does this expose'.
What developers build with this provider.
AI Agents
People Tech
Recruitment
Learning
Assessment & Background Check
Global Employment
Benefits
Fintech
Security & Compliance
Scroll within the panel for all 9 ·
Resources
Every other property we hold for StackOne — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 2
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Build 16
SDKs, sample code, and the tooling you integrate with
Scroll within the panel for all 16 ·
Access & Security 3
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 1
Pricing, plans, and the legal terms of use
Company 5
The organization behind the API
Other 4
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/stackone · machine-readable index on apis.io
This is an independent, third-party profile of StackOne, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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