First Street

First Street models use validated and proven methodologies to ensure model accuracy. We measure and predict the impact of a peril based on the underlying physics of how an actual event would transpire. First Street exposes Climate Risk, Enterprise, and Raster Map APIs for property-level climate risk data.

First Street publishes 3 APIs on the APIs.io network: Enterprise API, Graphql API, and Maps API. Tagged areas include Environment, Modeling, Risk, and Climate.

First Street’s developer surface includes authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

28.2/100 thin ▬ flat Agent 20/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Environment Modeling Risk Climate

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 28.2/100 · thin

Contract Quality 11.5 / 23

Developer Ergonomics 3.9 / 18

Access Clarity 4.3 / 18

Operational Transparency 1.2 / 12

Contract Governance 0.0 / 11

Discoverability 5.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · 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 0 / 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

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.

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 github.com/api-evangelist/first-street: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 6

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

First Street Climate Risk API

The Climate Risk API provides physical climate risk data globally, delivering property-level insights into hazards including flood, wildfire, heat, wind, and air quality.

First Street Enterprise API

The Enterprise API offers aggregated climate risk views for portfolios, enabling enterprise users to assess risk across multiple properties and geographic regions.

First Street Raster Map API

The Raster Map API delivers visual raster layers of climate perils for mapping and visualization use cases.

First Street Enterprise API

The Enterprise API from First Street — 1 operation(s) for enterprise.

First Street Graphql API

The Graphql API from First Street — 1 operation(s) for graphql.

First Street Maps API

The Maps API from First Street — 1 operation(s) for maps.

Open Collections 5

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

API Collection

OPEN COLLECTION

First Street Enterprise API

OPEN COLLECTION

First Street Enterprise Graphql API

OPEN COLLECTION

First Street Enterprise Maps API

OPEN COLLECTION

First Street API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

First Street Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

First Street Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

First Street Finops

FINOPS

Security Posture 4

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

First Street Authentication

apiKey/http · 2 schemes

SECURITY

First Street Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

First Street Vulnerability Disclosure

disclosure policy published

SECURITY

First Street Trust Center

SOC 2

SECURITY

Agentic Access 1

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

First Street Agentic Access

3 operations · 2 acting

AGENTIC

Resources

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

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Company 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: first-street
name: First Street
description: First Street models use validated and proven methodologies to ensure model accuracy. We measure and predict the
  impact of a peril based on the underlying physics of how an actual event would transpire. First Street exposes Climate Risk,
  Enterprise, and Raster Map APIs for property-level climate risk data.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/first-street.png
access: 3rd-Party
created: '2025-03-01'
modified: '2026-04-28'
position: Consuming
tags:
- Environment
- Modeling
- Risk
- Climate
url: https://raw.githubusercontent.com/api-evangelist/first-street/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: first-street:climate-risk
  name: First Street Climate Risk API
  tags:
  - Environment
  - Modeling
  - Risk
  - Climate
  humanURL: https://docs.firststreet.org/api
  properties:
  - url: https://firststreet.org/
    type: Website
  - url: https://docs.firststreet.org/api
    type: Documentation
  description: The Climate Risk API provides physical climate risk data globally, delivering property-level insights into
    hazards including flood, wildfire, heat, wind, and air quality.
- aid: first-street:enterprise
  name: First Street Enterprise API
  tags:
  - Environment
  - Modeling
  - Risk
  - Climate
  humanURL: https://docs.firststreet.org/api
  properties:
  - url: https://firststreet.org/
    type: Website
  - url: https://docs.firststreet.org/api
    type: Documentation
  description: The Enterprise API offers aggregated climate risk views for portfolios, enabling enterprise users to assess
    risk across multiple properties and geographic regions.
- aid: first-street:raster-map
  name: First Street Raster Map API
  tags:
  - Environment
  - Modeling
  - Risk
  - Climate
  - Mapping
  humanURL: https://docs.firststreet.org/api
  properties:
  - url: https://firststreet.org/
    type: Website
  - url: https://docs.firststreet.org/api
    type: Documentation
  description: The Raster Map API delivers visual raster layers of climate perils for mapping and visualization use cases.
- aid: first-street:first-street-enterprise-api
  name: First Street Enterprise API
  description: The Enterprise API from First Street — 1 operation(s) for enterprise.
  humanURL: https://docs.firststreet.org/api
  tags:
  - Enterprise
  properties:
  - type: OpenAPI
    url: openapi/first-street-enterprise-api-openapi.yml
- aid: first-street:first-street-graphql-api
  name: First Street Graphql API
  description: The Graphql API from First Street — 1 operation(s) for graphql.
  humanURL: https://docs.firststreet.org/api
  tags:
  - GraphQL
  tags_raw:
  - Graphql
  properties:
  - type: OpenAPI
    url: openapi/first-street-graphql-api-openapi.yml
- aid: first-street:first-street-maps-api
  name: First Street Maps API
  description: The Maps API from First Street — 1 operation(s) for maps.
  humanURL: https://docs.firststreet.org/api
  tags:
  - Maps
  properties:
  - type: OpenAPI
    url: openapi/first-street-maps-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/first-street-agentic-access.yml
- type: TrustCenter
  url: security/first-street-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/first-street-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/first-street-domain-security.yml
- type: Authentication
  url: authentication/first-street-authentication.yml
- type: GitHubOrganization
  url: https://github.com/FirstStreet
- type: LinkedIn
  url: https://www.linkedin.com/company/first-street-foundation
- type: Website
  url: https://firststreet.org/
- type: Documentation
  url: https://docs.firststreet.org/api
- type: LlmsText
  url: https://firststreet.org/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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