placestack-com

Placestack provides a comprehensive parcel, permit, and zoning data API for U.S. addresses. It offers an Explorer UI, a RESTful API, and an MCP server designed for AI agents, delivering property ownership, sales history, building permits, zoning regulations, and decision records.

placestack-com publishes 12 API contracts indexed on the APIs.io network, including Account API, Case API, Event API, and 9 more. Tagged areas include Company, Real Estate, Data, API, and Geospatial.

The placestack-com catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

placestack-com’s developer surface includes authentication, documentation, API reference, getting-started guide, support, pricing, signup flow, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

53.5/100 developing Agent 52/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 2 Agent Skills

Company Real Estate DataAPIGeospatial Property

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 53.5/100 · developing

Contract Quality 12.6 / 21

Developer Ergonomics 10.4 / 17

Access Clarity 7.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 8.1 / 10

Discoverability 5.6 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 52/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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):

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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

4 more unmet checks in the Agent Readiness table above.

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

Operational Transparency scores 0.0 — up to +13.0 composite points
Access Clarity scores 44.7 — up to +11.1 composite points
Contract Quality scores 59.4 — up to +10.2 composite points

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.

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/placestack-com/apis.yml: open an issue on github.com/api-evangelist/placestack-com 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 →

APIs 12

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

placestack-com Account API

The credential making the request, its scopes and its credit balance.

placestack-com Case API

Zoning and development cases: rezonings, variances, special uses, subdivisions and site plans, with their decisions.

placestack-com Event API

Permits and cases filed on monitored places, as events. Each is also sent to webhooks subscribed to its type.

placestack-com Jurisdiction API

States, counties, cities and towns, with their identifiers, boundaries and data coverage.

placestack-com List API

Named lists of saved places: sites, towns and counties, ZIP codes and areas.

placestack-com Monitor API

Monitors on lists, which produce events about the places on a list.

placestack-com Parcel API

Parcels, with owners, assessed values, buildings, sales and boundaries. Search by address, parcel number, point or area.

placestack-com Permit API

Building and trade permits, with their decisions.

placestack-com Suggestion API

Matches for typed text, for search-as-you-type: jurisdictions, addresses and parcel numbers.

placestack-com Usage API

Requests, credits spent and the credit balance.

placestack-com Webhook API

Webhooks, their deliveries and test events.

placestack-com Zoning API

Zoning classifications, with the uses each allows and its dimensional standards, cited to the ordinance.

Scroll for all 12

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

parcel-management

AGENT SKILL

saved-list

AGENT SKILL

Semantic Vocabularies 1

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

Placestack Com Context

120 classes · 302 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

placestack-com API Rules

17 rules · 14 errors 2 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Placestack Com Openapi Overlay

0 actions · update

UNRECORDED

JSON Schema 6

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

Case

19 properties

JSON SCHEMA

Delivery

18 properties

JSON SCHEMA

Parcel

20 properties

JSON SCHEMA

Permit

19 properties

JSON SCHEMA

SavedListItem

19 properties

JSON SCHEMA

Zoning

22 properties

JSON SCHEMA

Security Posture 2

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

Placestack Com Authentication

http · 1 scheme

SECURITY

Placestack Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Placestack Com Agentic Access

43 operations · 14 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: placestack-com
name: placestack-com
description: Placestack provides a comprehensive parcel, permit, and zoning data API for U.S. addresses. It offers an Explorer
  UI, a RESTful API, and an MCP server designed for AI agents, delivering property ownership, sales history, building permits,
  zoning regulations, and decision records.
image: https://placestack.com/opengraph-image
url: https://artifacts.apis.io/placestack-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- Real Estate
- Data
- API
- Geospatial
- Property
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/placestack-com-agentic-access.yml
- type: Spectral
  url: rules/placestack-com-rules.yml
- type: JSONLD
  url: json-ld/placestack-com-context.jsonld
- type: Vocabulary
  url: vocabulary/placestack-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/placestack-com-data-model.yml
- type: ErrorCatalog
  url: errors/placestack-com-problem-types.yml
- type: Conformance
  url: conformance/placestack-com-conformance.yml
- type: LLMsTxt
  url: llms/placestack-com-llms.txt
- type: WellKnown
  url: well-known/placestack-com-well-known.yml
- type: Hosts
  url: hosts/placestack-com-hosts.yml
- type: DeveloperPortal
  url: https://console.placestack.com/developer/key
- type: Authentication
  url: authentication/placestack-com-authentication.yml
- type: DomainSecurity
  url: security/placestack-com-domain-security.yml
- type: Website
  url: https://placestack.com/
- type: Documentation
  url: https://placestack.com/docs
- type: APIReference
  url: https://placestack.com/api
- type: GettingStarted
  url: https://placestack.com/docs
- type: Support
  url: https://placestack.com/contact
- type: Pricing
  url: https://placestack.com/pricing
- type: TermsOfService
  url: https://placestack.com/terms
- type: PrivacyPolicy
  url: https://placestack.com/privacy
- type: SignUp
  url: https://placestack.com/contact
apis:
- aid: placestack-com:placestack-com-account-api
  name: placestack-com Account API
  description: The credential making the request, its scopes and its credit balance.
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - account
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-case-api
  name: placestack-com Case API
  description: 'Zoning and development cases: rezonings, variances, special uses, subdivisions and site plans, with their
    decisions.'
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - case
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-case-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-event-api
  name: placestack-com Event API
  description: Permits and cases filed on monitored places, as events. Each is also sent to webhooks subscribed to its type.
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - event
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-event-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-jurisdiction-api
  name: placestack-com Jurisdiction API
  description: States, counties, cities and towns, with their identifiers, boundaries and data coverage.
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - jurisdiction
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-jurisdiction-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-list-api
  name: placestack-com List API
  description: 'Named lists of saved places: sites, towns and counties, ZIP codes and areas.'
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - list
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-list-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-monitor-api
  name: placestack-com Monitor API
  description: Monitors on lists, which produce events about the places on a list.
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - monitor
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-monitor-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-parcel-api
  name: placestack-com Parcel API
  description: Parcels, with owners, assessed values, buildings, sales and boundaries. Search by address, parcel number, point
    or area.
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - parcel
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-parcel-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-permit-api
  name: placestack-com Permit API
  description: Building and trade permits, with their decisions.
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - permit
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-permit-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-suggestion-api
  name: placestack-com Suggestion API
  description: 'Matches for typed text, for search-as-you-type: jurisdictions, addresses and parcel numbers.'
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - suggestion
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-suggestion-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-usage-api
  name: placestack-com Usage API
  description: Requests, credits spent and the credit balance.
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - usage
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-usage-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-webhook-api
  name: placestack-com Webhook API
  description: Webhooks, their deliveries and test events.
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - webhook
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-webhook-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
- aid: placestack-com:placestack-com-zoning-api
  name: placestack-com Zoning API
  description: Zoning classifications, with the uses each allows and its dimensional standards, cited to the ordinance.
  humanURL: https://placestack.com/docs/api/reference
  baseURL: https://api.placestack.com
  tags:
  - zoning
  properties:
  - type: OpenAPI
    url: openapi/placestack-com-zoning-api-openapi.yml
  - type: JSONSchema
    url: json-schema/placestack-com-zoning-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-saved-list-item-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-permit-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-case-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-parcel-schema.json
  - type: JSONSchema
    url: json-schema/placestack-com-delivery-schema.json
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 24
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

placestack-com API — frequently asked questions

Does placestack-com have an API?

Yes. APIs.io lists 12 APIs from placestack-com, including placestack-com Account API, placestack-com Case API and placestack-com Event API, and 9 more.

Is there an OpenAPI specification for the placestack-com API?

Yes. APIs.io indexes 12 OpenAPI specifications for placestack-com, each linked for download from this page.

How do I authenticate with the placestack-com API?

placestack-com documents its authentication (http · 1 scheme). The details are profiled on APIs.io as Placestack Com Authentication.

Is the placestack-com API ready for AI agents?

placestack-com has a Kin Score of 53.5 out of 100 (developing) and an Agent Readiness score of 52.3 (agent-ready), scored by API Evangelist on 2026-10-31.

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