Hookbridge

Hookbridge provides a webhook delivery service that ensures reliable event transmission with automatic retries, signature verification, and flexible delivery modes including send, receive, and pull. The platform offers developer tools, a GitHub Action for CI testing, comprehensive documentation, pricing plans, and a blog with engineering guides. It targets SaaS products needing robust webhook infrastructure, simplifying integration and improving reliability for customers.

Hookbridge publishes 2 API contracts indexed on the APIs.io network, including API API, and 1 more. Tagged areas include Company, Webhook, Software-as-a-Service, and Integration.

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

Hookbridge’s developer surface includes CLI, authentication, documentation, API reference, getting-started guide, pricing, engineering blog, and 19 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

41.0/100 developing ▼ -8.1 Agent 21/100 agent aware Heartbeat 94/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract

Company Webhook Software-as-a-Service Integration

Kin Score

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

Composite quality — 41.0/100 · developing

Contract Quality 10.1 / 19

Developer Ergonomics 6.3 / 15

Access Clarity 2.4 / 15

Operational Transparency 3.3 / 10

Contract Governance 2.0 / 9

Discoverability 4.6 / 8

Regulatory Posture 3.1 / 15

Create-or-Update Ergonomics 2.8 / 10

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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 15.8 — up to +16.8 composite points
Developer Ergonomics scores 41.7 — up to +11.7 composite points
Contract Quality scores 53.7 — up to +11.6 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/hookbridge/apis.yml: open an issue on github.com/api-evangelist/hookbridge 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 2

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

HookBridge API

Webhook delivery reliability platform API

HookBridge API API

HookBridge is a webhook delivery reliability platform that provides:

Hookbridge API pricing

Rate limits

per-endpoint-rate_limit_rps: maximum requests per second to this endpoint (rate_limit_rps)
per-endpoint-burst: burst limit for short spikes (burst)
project-level-burst: project-level burst ceiling, 429 response with error code BURST_LIMIT_EXCEEDED and retry_after_ms

Rate-limit details →

Rate Limits 1

Documented rate limits and quota policies.

Hookbridge Rate Limits

3 limits

RATE LIMITS

Semantic Vocabularies 1

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

Hookbridge Context

100 classes · 149 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Hookbridge API Rules

15 rules · 11 errors 3 warnings 1 info

SPECTRAL

JSON Schema 6

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

CreateInboundEndpointRequest

20 properties

JSON SCHEMA

CreateInboundEndpointResponse

2 properties

JSON SCHEMA

GetSubscriptionResponse

2 properties

JSON SCHEMA

ListenInboundEndpointResponse

2 properties

JSON SCHEMA

MessageSummary

14 properties

JSON SCHEMA

UpdateInboundEndpointRequest

18 properties

JSON SCHEMA

Security Posture 2

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

Hookbridge Authentication

1 scheme

SECURITY

Hookbridge Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Idempotency

Conventions

Conformance

DataModel

ErrorCatalog

Scroll for all 8

Build 4

SDKs, sample code, and the tooling you integrate with

CLI

CLI

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: hookbridge
name: Hookbridge
description: Hookbridge provides a webhook delivery service that ensures reliable event transmission with automatic retries,
  signature verification, and flexible delivery modes including send, receive, and pull. The platform offers developer tools,
  a GitHub Action for CI testing, comprehensive documentation, pricing plans, and a blog with engineering guides. It targets
  SaaS products needing robust webhook infrastructure, simplifying integration and improving reliability for customers.
url: https://raw.githubusercontent.com/api-evangelist/hookbridge/refs/heads/main/apis.yml
x-type: company
x-source: harvest:g2-catalog
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-18 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-10-17'
modified: '2026-10-17'
tags:
- Company
- Webhook
- Software-as-a-Service
- Integration
tags_raw:
- Company
- Webhooks
- SaaS
- API
- Integration
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/hookbridge-rules.yml
- type: JSONLD
  url: json-ld/hookbridge-context.jsonld
- type: Vocabulary
  url: vocabulary/hookbridge-vocabulary.yml
- type: Idempotency
  url: conventions/hookbridge-conventions.yml
- type: Conventions
  url: conventions/hookbridge-conventions.yml
- type: Conformance
  url: conformance/hookbridge-conformance.yml
- type: RateLimits
  url: rate-limits/hookbridge-rate-limits.yml
- type: DataModel
  url: data-model/hookbridge-data-model.yml
- type: CLI
  url: cli/hookbridge-cli.yml
- type: Authentication
  url: authentication/hookbridge-authentication.yml
- type: ErrorCatalog
  url: errors/hookbridge-problem-types.yml
- type: LLMsTxt
  url: llms/hookbridge-llms.txt
- type: Hosts
  url: hosts/hookbridge-hosts.yml
- type: Vendors
  url: vendors/hookbridge-vendors.yml
- type: SDKs
  url: packages/hookbridge-packages.yml
- type: Packages
  url: packages/hookbridge-packages.yml
- type: GitHubOrganization
  url: https://github.com/hookbridge
- type: DomainSecurity
  url: security/hookbridge-domain-security.yml
- type: Website
  url: https://hookbridge.io/
- type: Documentation
  url: https://docs.hookbridge.io/
- type: APIReference
  url: https://docs.hookbridge.io/api/
- type: GettingStarted
  url: https://docs.hookbridge.io/getting-started/introduction/
- type: Pricing
  url: https://www.hookbridge.io/pricing.html
- type: Blog
  url: https://www.hookbridge.io/blog.html
- type: TermsOfService
  url: https://www.hookbridge.io/terms.html
- type: PrivacyPolicy
  url: https://www.hookbridge.io/privacy.html
apis:
- name: HookBridge API
  description: Webhook delivery reliability platform API
  humanURL: https://docs.hookbridge.io/api/
  baseURL: https://api.hookbridge.io
  aid: hookbridge:hookbridge-api
- aid: hookbridge:hookbridge-api-api
  name: HookBridge API API
  description: 'HookBridge is a webhook delivery reliability platform that provides:'
  humanURL: https://docs.hookbridge.io/llms.txt
  baseURL: https://api.hookbridge.io
  properties:
  - type: OpenAPI
    url: openapi/_original/hookbridge-api-openapi.yml
  - type: JSONSchema
    url: json-schema/hookbridge-create-inbound-endpoint-request-schema.json
  - type: JSONSchema
    url: json-schema/hookbridge-listen-inbound-endpoint-response-schema.json
  - type: JSONSchema
    url: json-schema/hookbridge-create-inbound-endpoint-response-schema.json
  - type: JSONSchema
    url: json-schema/hookbridge-update-inbound-endpoint-request-schema.json
  - type: JSONSchema
    url: json-schema/hookbridge-get-subscription-response-schema.json
  - type: JSONSchema
    url: json-schema/hookbridge-message-summary-schema.json
x-enrichment:
  date: '2026-10-18'
  status: enriched
  artifacts_added: 18
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Hookbridge API — frequently asked questions

Does Hookbridge have an API?

Yes. APIs.io lists 2 APIs from Hookbridge, including HookBridge API and HookBridge API API.

Is there an OpenAPI specification for the Hookbridge API?

Yes. APIs.io indexes 1 OpenAPI specification for Hookbridge, each linked for download from this page.

How do I authenticate with the Hookbridge API?

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

Is the Hookbridge API ready for AI agents?

Hookbridge has a Kin Score of 41.0 out of 100 (developing) and an Agent Readiness score of 21.2 (agent-aware), scored by API Evangelist on 2026-11-06.

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