Formspree website screenshot

Formspree

Formspree is a form backend for static and Jamstack sites. Two API surfaces matter: (1) the public form-submission endpoint (formspree.io/f/{hashid}) that accepts POST submissions and returns JSON when the Accept header is set, and (2) the Forms API (formspree.io/api/0/...) for programmatic submission retrieval, export and form management. Plugins and the Formspree CLI extend the surface.

Formspree publishes 1 API on the APIs.io network: Forms API. Tagged areas include Forms, Backend, Static Sites, Email, and Webhooks.

Formspree’s developer surface includes authentication, documentation, pricing, GitHub presence, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub
45.2/100 developing ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
3 APIs
FormsBackendStatic SitesEmailWebhooksJAMstackCLI

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 45.2/100 · developing
Contract Quality 15.5 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 11.6 / 20
Operational Transparency 6.8 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/formspree: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

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

Formspree Form Submission Endpoint

Public POST endpoint per form. Accepts standard HTML form posts and cross-origin AJAX (Accept: application/json) and returns JSON. No auth for the submission itself; per-form sp...

Formspree Forms API

REST API for retrieving submissions and managing forms. Endpoints under /api/0/forms//. Bearer auth using a public read-only API key or a Master API key (paid plans only...

Formspree Forms API

The Forms API from Formspree — 1 operation(s) for forms.

Open Collections 1

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

Formspree Form Submissions API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Formspree Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Formspree Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Formspree Finops

FINOPS

Security Posture 4

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

Formspree Authentication

http · 1 scheme

SECURITY

Formspree Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Formspree Vulnerability Disclosure

disclosure policy published

SECURITY

Formspree Trust Center

SOC 2, GDPR

SECURITY

Agentic Access 1

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

Formspree Agentic Access

1 operation

1 operations · 0 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

GitHub
GitHub

Access & Security 4

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: formspree
url: https://raw.githubusercontent.com/api-evangelist/formspree/refs/heads/main/apis.yml
name: Formspree
kind: company
description: 'Formspree is a form backend for static and Jamstack sites. Two API surfaces matter: (1) the public form-submission
  endpoint (formspree.io/f/{hashid}) that accepts POST submissions and returns JSON when the Accept header is set, and (2)
  the Forms API (formspree.io/api/0/...) for programmatic submission retrieval, export and form management. Plugins and the
  Formspree CLI extend the surface.'
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/formspree.png
tags:
- Forms
- Backend
- Static Sites
- Email
- Webhooks
- JAMstack
- CLI
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.19'
apis:
- aid: formspree:submission
  name: Formspree Form Submission Endpoint
  description: 'Public POST endpoint per form. Accepts standard HTML form posts and cross-origin AJAX (Accept: application/json)
    and returns JSON. No auth for the submission itself; per-form spam controls.'
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://help.formspree.io/hc/en-us/articles/360015233153-Form-Submissions-API
  baseURL: https://formspree.io/f/<hashid>
  tags:
  - REST
  - Submissions
  - AJAX
  properties:
  - type: Documentation
    url: https://help.formspree.io/hc/en-us/articles/360015233153-Form-Submissions-API
- aid: formspree:forms-api
  name: Formspree Forms API
  description: REST API for retrieving submissions and managing forms. Endpoints under /api/0/forms/<hashid>/. Bearer auth
    using a public read-only API key or a Master API key (paid plans only). Supports since/limit/offset.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://help.formspree.io/sections/the-forms-api/
  baseURL: https://formspree.io/api/0
  tags:
  - REST
  - Submissions
  - Management
  - Pagination
  properties:
  - type: Documentation
    url: https://help.formspree.io/sections/the-forms-api/
  - type: APIKeys
    url: https://help.formspree.io/articles/the-forms-api/api-keys/
- aid: formspree:formspree-forms-api
  name: Formspree Forms API
  description: The Forms API from Formspree — 1 operation(s) for forms.
  humanURL: https://help.formspree.io/hc/en-us/articles/360015233153-Form-Submissions-API
  baseURL: https://formspree.io/f/<hashid>
  tags:
  - Forms
  properties:
  - type: OpenAPI
    url: openapi/formspree-forms-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/formspree-agentic-access.yml
- type: TrustCenter
  url: security/formspree-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/formspree-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/formspree-domain-security.yml
- type: Authentication
  url: authentication/formspree-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/formspree
- type: Website
  url: https://formspree.io/
- type: Documentation
  url: https://help.formspree.io/
- type: Pricing
  url: https://formspree.io/plans
- type: GitHub
  url: https://github.com/formspree
- type: StatusPage
  url: https://www.formspreestatus.com/
- type: Plans
  url: plans/formspree-plans-pricing.yml
- type: RateLimits
  url: rate-limits/formspree-rate-limits.yml
- type: FinOps
  url: finops/formspree-finops.yml
- type: LlmsText
  url: https://formspree.io/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com