Stacker

Stacker is a no-code platform that enables organizations to build custom business applications, internal tools, and customer portals on top of their existing data sources — including Airtable, Google Sheets, SQL databases, and Salesforce — without writing code. Its drag-and-drop interface, role-based access controls, and Open API enable teams to create data-driven portals, automate workflows, and integrate with third-party services.

Stacker publishes 4 API contracts indexed on the APIs.io network, including Accounts API, Hello API, Objects API, and 1 more. Tagged areas include Application Development, Low-Code, No-Code, Portal, and Workflow Automation.

The Stacker catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Stacker’s developer surface includes authentication, documentation, getting-started guide, pricing, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

36.1/100 thin ▬ flat Agent 21/100 agent aware Heartbeat 34/100 slowing saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Application Development Low-Code No-Code Portal Workflow Automation

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 36.1/100 · thin

Contract Quality 10.2 / 19

Developer Ergonomics 5.4 / 15

Access Clarity 3.8 / 15

Operational Transparency 0.7 / 10

Contract Governance 0.9 / 9

Discoverability 5.5 / 8

Regulatory Posture 1.6 / 15

Create-or-Update Ergonomics 2.2 / 10

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 25.5 — up to +14.9 composite points Ask about this →
Developer Ergonomics scores 35.7 — up to +12.9 composite points Ask about this →
Operational Transparency scores 7.1 — up to +12.1 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/stacker/apis.yml: open an issue on github.com/api-evangelist/stacker to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

Stacker Accounts API

Manage Stacker accounts

Stacker Hello API

Health check and connectivity test

Stacker Objects API

Manage objects (tables) within a stack

Stacker Records API

CRUD operations on records within an object

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Stacker Accounts API

OPEN COLLECTION

Stacker Accounts Hello API

OPEN COLLECTION

Stacker Accounts Objects API

OPEN COLLECTION

Stacker Accounts Records API

OPEN COLLECTION

Stacker API

OPEN COLLECTION

Stacker API pricing

Not yet checked against Stacker's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Stacker's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Stacker Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Stacker Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Stacker Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Stacker Context

10 classes · 3 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Stacker — jsonschema rules

5 rules · 4 warn-severity 1 info-severity

SPECTRAL

Stacker API Rules

7 rules · 3 error-severity 4 warn-severity

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

Stacker Record

1 properties

JSON SCHEMA

Stacker Search Request

7 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Stacker Record Structure

0 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

Stacker Create Record Example

4 fields

EXAMPLE

Stacker Search Records Example

4 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Stacker Authentication

apiKey · 1 scheme

SECURITY

Stacker Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

Stacker Agentic Access

10 operations · 4 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Pricing

Pricing

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: stacker
name: Stacker
description: Stacker is a no-code platform that enables organizations to build custom business applications, internal tools,
  and customer portals on top of their existing data sources — including Airtable, Google Sheets, SQL databases, and Salesforce
  — without writing code. Its drag-and-drop interface, role-based access controls, and Open API enable teams to create data-driven
  portals, automate workflows, and integrate with third-party services.
url: https://raw.githubusercontent.com/api-evangelist/stacker/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/stacker.png
x-docs-platform: gitbook
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-17
tags:
- Application Development
- Low-Code
- No-Code
- Portal
- Workflow Automation
tags_raw:
- Application Development
- Low-Code
- No-Code
- Portals
- Workflow Automation
- Workflow-Automation
type: Index
access: 3rd-Party
created: '2025-01-01'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: stacker:stacker-accounts-api
  name: Stacker Accounts API
  description: Manage Stacker accounts
  humanURL: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview
  baseURL: https://api.go.stackerhq.com
  tags:
  - Account
  tags_raw:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/stacker-accounts-api-openapi.yml
  - type: Documentation
    url: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview
  - type: Authentication
    url: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview/authentication
- aid: stacker:stacker-hello-api
  name: Stacker Hello API
  description: Health check and connectivity test
  humanURL: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview
  baseURL: https://api.go.stackerhq.com
  tags:
  - Hello
  properties:
  - type: OpenAPI
    url: openapi/stacker-hello-api-openapi.yml
  - type: Documentation
    url: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview
  - type: Authentication
    url: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview/authentication
- aid: stacker:stacker-objects-api
  name: Stacker Objects API
  description: Manage objects (tables) within a stack
  humanURL: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview
  baseURL: https://api.go.stackerhq.com
  tags:
  - Objects
  properties:
  - type: OpenAPI
    url: openapi/stacker-objects-api-openapi.yml
  - type: Documentation
    url: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview
  - type: Authentication
    url: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview/authentication
- aid: stacker:stacker-records-api
  name: Stacker Records API
  description: CRUD operations on records within an object
  humanURL: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview
  baseURL: https://api.go.stackerhq.com
  tags:
  - Records
  properties:
  - type: OpenAPI
    url: openapi/stacker-records-api-openapi.yml
  - type: Documentation
    url: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview
  - type: Authentication
    url: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview/authentication
common:
- type: Plans
  url: plans/stacker-plans-pricing.yml
- type: RateLimits
  url: rate-limits/stacker-rate-limits.yml
- type: FinOps
  url: finops/stacker-finops.yml
- type: AgenticAccess
  url: agentic-access/stacker-agentic-access.yml
- type: DomainSecurity
  url: security/stacker-domain-security.yml
- type: Authentication
  url: authentication/stacker-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/stackermedia
- type: Website
  url: https://stacker.ai/
  name: Stacker - No-Code Platform
- type: Documentation
  url: https://docs.stackerhq.com/
  name: Stacker Documentation
- type: GettingStarted
  url: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview
  name: Open API Overview
- type: Authentication
  url: https://docs.stackerhq.com/stacker/ai-and-automations/open-api-overview/authentication
  name: API Authentication
- type: Pricing
  url: https://stacker.ai/pricing
  name: Stacker Pricing
- type: Blog
  url: https://stacker.ai/blog
  name: Stacker Blog
- type: Login
  url: https://app.stackerhq.com/
  name: Stacker App Login
- type: LlmsText
  url: https://api.go.stackerhq.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Stacker API — frequently asked questions

Does Stacker have an API?

Yes. APIs.io lists 4 APIs from Stacker, including Stacker Accounts API, Stacker Hello API and Stacker Objects API, and 1 more.

Is there an OpenAPI specification for the Stacker API?

Yes. APIs.io indexes 4 OpenAPI specifications for Stacker, each linked for download from this page.

How do I authenticate with the Stacker API?

Stacker uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Stacker Authentication.

How much does the Stacker API cost?

APIs.io lists 3 pricing plans for Stacker, with each plan's price, limits and inclusions under Pricing on this page.

Is the Stacker API ready for AI agents?

Stacker has a Kin Score of 36.1 out of 100 (thin) and an Agent Readiness score of 21.3 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

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Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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How their score was established

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