Relay App

Relay.app is an AI-powered workflow automation platform that converts plain language into reliable visual workflows across 200+ app integrations. It supports webhook triggers, custom HTTP requests, scheduled automation, human-in-the-loop approval workflows, and MCP server tooling for AI agent integration. Developer features include API-triggered workflows, custom JavaScript execution, and integration with OpenAI, Anthropic, and other AI providers.

Relay App publishes 3 API contracts indexed on the APIs.io network: Runs API, Webhooks API, and Workflows API. Tagged areas include Automation, Workflows, Integration, No-Code, and Artificial Intelligence.

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

Relay App’s developer surface includes authentication, documentation, engineering blog, and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

32.0/100 thin ▬ flat Agent 32/100 agent ready Front door AI 4/6 moderate Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 MCP Servers

Automation Workflows Integration No-Code Artificial Intelligence Webhook Workflow Automation

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 32.0/100 · thin

Contract Quality 11.2 / 19

Developer Ergonomics 3.2 / 15

Access Clarity 1.2 / 15

Operational Transparency 0.8 / 10

Contract Governance 2.5 / 9

Discoverability 5.6 / 8

Regulatory Posture 2.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 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

Pagination 5 / 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):

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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
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)

7 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 21.4 — up to +15.7 composite points
Operational Transparency scores 7.9 — up to +12.0 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/relay-app/apis.yml: open an issue on github.com/api-evangelist/relay-app 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Workflow Automation (iPaaS bridges)	builds-on	51.8	-	-
Zoom App Marketplace and Partner Ecosystem (builders and partners on Zoom)	builds-on	51.8	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 2

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OpenAPI

measured — observed by APIs.io (published)

APIs 3

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

Relay App Runs API

Operations for managing and inspecting workflow run instances

Relay App Webhooks API

Webhook trigger endpoints for initiating workflow runs

Relay App Workflows API

Operations for managing and triggering workflow runs

Open Collections 4

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

Relay App Automation Runs API

OPEN COLLECTION

Relay App Automation Runs Webhooks API

OPEN COLLECTION

Relay App Automation Runs Workflows API

OPEN COLLECTION

Relay App Automation API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Relay App MCP Server

Remote MCP server at mcp.relay.app over HTTP.

MCP SERVER

Relay App API pricing

Not yet checked against Relay App'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 Relay App's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Relay App Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Relay App Rate Limits

5 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Relay App

SLA

FinOps 1

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

Relay App Finops

FINOPS

Semantic Vocabularies 1

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

Relay App Context

0 classes · 22 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.

Relay App — jsonschema rules

5 rules · 3 warn-severity 2 info-severity

SPECTRAL

Relay App API Rules

10 rules · 2 error-severity 7 warn-severity 1 info-severity

SPECTRAL

JSON Schema 2

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

Relay App Workflow Run

7 properties

JSON SCHEMA

Relay App Workflow

7 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Relay App Workflow Structure

0 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

Relay App Approve Workflow Step Example

4 fields

EXAMPLE

Relay App Trigger Webhook Example

4 fields

EXAMPLE

Security Posture 2

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

Relay App Authentication

apiKey · 1 scheme

SECURITY

Relay App Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

Relay App Agentic Access

8 operations · 3 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

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

JSONLDContext

JSONLDContext

Vocabulary

Vocabulary

SpectralRules

SpectralRules

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: relay-app
name: Relay App
description: Relay.app is an AI-powered workflow automation platform that converts plain language into reliable visual workflows
  across 200+ app integrations. It supports webhook triggers, custom HTTP requests, scheduled automation, human-in-the-loop
  approval workflows, and MCP server tooling for AI agent integration. Developer features include API-triggered workflows,
  custom JavaScript execution, and integration with OpenAI, Anthropic, and other AI providers.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  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
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/relay-app.png
tags:
- Automation
- Workflows
- Integration
- No-Code
- Artificial Intelligence
- Webhook
- Workflow Automation
tags_raw:
- Automation
- Workflow
- Integration
- No-Code
- AI
- Webhooks
- Workflow-Automation
url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/apis.yml
created: '2026-03-16'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: relay-app:relay-app-runs-api
  name: Relay App Runs API
  description: Operations for managing and inspecting workflow run instances
  humanURL: https://docs.relay.app/
  baseURL: https://api.relay.app
  tags:
  - Runs
  properties:
  - type: OpenAPI
    url: openapi/relay-app-runs-api-openapi.yml
  - type: Documentation
    url: https://docs.relay.app/
  - type: Webhook Documentation
    url: https://docs.relay.app/triggers/webhook-trigger
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/json-schema/relay-app-workflow-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/json-schema/relay-app-workflow-run-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/json-structure/relay-app-workflow-structure.json
- aid: relay-app:relay-app-webhooks-api
  name: Relay App Webhooks API
  description: Webhook trigger endpoints for initiating workflow runs
  humanURL: https://docs.relay.app/
  baseURL: https://api.relay.app
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/relay-app-webhooks-api-openapi.yml
  - type: Documentation
    url: https://docs.relay.app/
  - type: Webhook Documentation
    url: https://docs.relay.app/triggers/webhook-trigger
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/json-schema/relay-app-workflow-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/json-schema/relay-app-workflow-run-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/json-structure/relay-app-workflow-structure.json
- aid: relay-app:relay-app-workflows-api
  name: Relay App Workflows API
  description: Operations for managing and triggering workflow runs
  humanURL: https://docs.relay.app/
  baseURL: https://api.relay.app
  tags:
  - Workflows
  properties:
  - type: OpenAPI
    url: openapi/relay-app-workflows-api-openapi.yml
  - type: Documentation
    url: https://docs.relay.app/
  - type: Webhook Documentation
    url: https://docs.relay.app/triggers/webhook-trigger
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/json-schema/relay-app-workflow-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/json-schema/relay-app-workflow-run-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/json-structure/relay-app-workflow-structure.json
common:
- type: Plans
  url: plans/relay-app-plans-pricing.yml
- type: RateLimits
  url: rate-limits/relay-app-rate-limits.yml
- type: FinOps
  url: finops/relay-app-finops.yml
- type: AgenticAccess
  url: agentic-access/relay-app-agentic-access.yml
- type: DomainSecurity
  url: security/relay-app-domain-security.yml
- type: Authentication
  url: authentication/relay-app-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/tryrelayapp
- type: Website
  url: https://www.relay.app
- type: Documentation
  url: https://docs.relay.app/
- type: Integrations
  url: https://www.relay.app/apps
- type: Blog
  url: https://www.relay.app/blog
- type: Features
  url: https://www.relay.app/features
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/json-ld/relay-app-context.jsonld
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/vocabulary/relay-app-vocabulary.yml
- type: SpectralRules
  url: https://raw.githubusercontent.com/api-evangelist/relay-app/refs/heads/main/rules/relay-app-rules.yml
- type: LlmsText
  url: https://docs.relay.app/llms.txt
integrations:
- name: Leave a review
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Relay App API — frequently asked questions

Does Relay App have an API?

Yes. APIs.io lists 3 APIs from Relay App, including Relay App Runs API, Relay App Webhooks API and Relay App Workflows API.

Is there an OpenAPI specification for the Relay App API?

Yes. APIs.io indexes 3 OpenAPI specifications for Relay App, each linked for download from this page.

How do I authenticate with the Relay App API?

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

How much does the Relay App API cost?

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

Does Relay App have an MCP server?

Yes. APIs.io lists 1 MCP server for Relay App: Remote MCP server at mcp.relay.app over HTTP.

Is the Relay App API ready for AI agents?

Relay App has a Kin Score of 32.0 out of 100 (thin) and an Agent Readiness score of 32.2 (agent-ready), scored by API Evangelist on 2026-11-06.

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