Starbridge

Starbridge is an AI-powered go-to-market and sales-intelligence platform for vendors selling to the public sector and education — government agencies, K-12 school districts, and higher-education institutions. It surfaces early buying signals (RFPs, board meetings, purchases, conferences, contact and job changes), scores and enriches target accounts, and drafts personalized outbound and RFP responses. Starbridge exposes an external REST API (Bearer API keys), Ed25519-signed webhooks, and a hosted OAuth MCP server, plus published Agent Skills, so buyer intelligence can be pulled into CRMs (Salesforce, HubSpot), Slack, Zapier, and AI agents. Backed by Craft Ventures.

Starbridge publishes 5 API contracts indexed on the APIs.io network, including Bridges API, Buyer API, Columns API, and 2 more. Tagged areas include Company, Artificial Intelligence, Sales Intelligence, Go-To-Market, and Public Sector.

The Starbridge catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Starbridge’s developer surface includes authentication, changelog, documentation, API reference, getting-started guide, engineering blog, signup flow, and 31 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

56.4/100 strong ▬ flat Agent 62/100 agent ready Front door AI 3/6 light Heartbeat 91/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 MCP Servers 10 Agent Skills

Company Artificial Intelligence Sales Intelligence Go-To-Market Public Sector Education Government Procurement Buyer Intelligence MCP A2A

Kin Score

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

Composite quality — 56.4/100 · strong

Contract Quality 11.9 / 19

Developer Ergonomics 8.2 / 15

Access Clarity 7.5 / 15

Operational Transparency 4.1 / 10

Contract Governance 2.9 / 9

Discoverability 5.6 / 8

Regulatory Posture 5.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 62/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector 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):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Pagination +5 pts — share of collection GETs (an array, or one wrapped in data/items/results ...) that declare a page/limit/offset/cursor parameter, a Link header or a next/cursor field; na with no collection GETs
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter
Well-Known Catalog +4 pts — common[].type includes WellKnown, APICatalog, or api-catalog

1 more unmet check in the Agent Readiness table above.

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

Access Clarity scores 50.0 — up to +10.0 composite points
Contract Quality scores 63.5 — up to +9.1 composite points
Developer Ergonomics scores 54.8 — up to +9.0 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/starbridge/apis.yml: open an issue on github.com/api-evangelist/starbridge 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
Government Cloud (FedRAMP, GovRAMP, G-Cloud)	long-tail	2.5 (thin)	-	1
Procurement and B2B Buying (source-to-pay suites, spend management)	long-tail	2.5 (thin)	-	1

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 6

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.

Agent2Agent

measured — observed by APIs.io (conformant)

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

Agent Skills

measured — observed by APIs.io (published)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 5

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

Starbridge Bridges API

The Bridges API from Starbridge — 4 operation(s) for bridges.

Starbridge Buyer API

The Buyer API from Starbridge — 4 operation(s) for buyer.

Starbridge Columns API

The Columns API from Starbridge — 1 operation(s) for columns.

Starbridge External MCP API

The External MCP API from Starbridge — 11 operation(s) for external mcp.

Starbridge Signal API

The Signal API from Starbridge — 2 operation(s) for signal.

Open Collections 6

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

Starbridge External Public Bridges API

OPEN COLLECTION

Starbridge External Public Bridges Buyer API

OPEN COLLECTION

Starbridge External Public Bridges Columns API

OPEN COLLECTION

Starbridge External Public Bridges External API API

OPEN COLLECTION

Starbridge External Public Bridges External MCP API

OPEN COLLECTION

Starbridge External Public Bridges Signal API

OPEN COLLECTION

MCP Servers 1

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

Starbridge MCP

Official hosted, remote Model Context Protocol server that brings a Starbridge organization's bridges, feed, signals, and buyer research into any MCP client. Installs as a Claud...

MCP SERVER

Agent Skills 10

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

bridges

AGENT SKILL

bulk-request-scoping

AGENT SKILL

buyer-attributes

AGENT SKILL

buyer-identification

AGENT SKILL

buyer-signals

AGENT SKILL

buyer-summary

AGENT SKILL

contact-search

AGENT SKILL

document-research

AGENT SKILL

general-outbound-email

AGENT SKILL

Starbridge

AGENT SKILL

Scroll for all 10

Starbridge API pricing

Pricing Plans 1

Published pricing tiers and plan structures.

Starbridge Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Starbridge Rate Limits

0 limits

RATE LIMITS

FinOps 1

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

Starbridge Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Starbridge Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Starbridge API Rules

58 rules · 54 errors 3 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.

Starbridge Openapi Overlay

3 actions · update · starbridge-openapi.json

GENERATED

Security Posture 3

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

Starbridge Authentication

http · 1 scheme

SECURITY

Starbridge Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Starbridge Trust Center

SOC 2 Type II

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Starbridge Scopes

1 scope · authorization_code/device_code

1 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 3

Reference material describing how the API behaves

OpenAPI

OpenAPI

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

LLMsTxt

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Webhooks

Conventions

Idempotency

Lifecycle

ErrorCatalog

DataModel

Conformance

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

OAuthScopes

TrustCenter

Compliance

Authentication

DomainSecurity

Operate 7

Status, limits, changes, and where to get help

RateLimits

ChangeLog

ChangeLog

StatusPage

StatusPage

HelpCenter

Support

Scroll for all 7

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

AgentCard

AgentCard

Overlay

Overlay

Source (apis.yml)

aid: starbridge
name: Starbridge
description: Starbridge is an AI-powered go-to-market and sales-intelligence platform for vendors selling to the public sector
  and education — government agencies, K-12 school districts, and higher-education institutions. It surfaces early buying
  signals (RFPs, board meetings, purchases, conferences, contact and job changes), scores and enriches target accounts, and
  drafts personalized outbound and RFP responses. Starbridge exposes an external REST API (Bearer API keys), Ed25519-signed
  webhooks, and a hosted OAuth MCP server, plus published Agent Skills, so buyer intelligence can be pulled into CRMs (Salesforce,
  HubSpot), Slack, Zapier, and AI agents. Backed by Craft Ventures.
url: https://raw.githubusercontent.com/api-evangelist/starbridge/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- craft-ventures
x-tier: provider
x-tier-reason: public-rest-api-mcp-webhooks
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: contact-sales
  onboarding: demo-gated
  trial: false
  try_now: false
  public: false
  label: Book a demo / contact sales
  confidence: high
  source:
  - plans/starbridge-plans-pricing.yml
  - authentication
  note: Corrected 2026-08-14. starbridge.ai/pricing and /plans both 404 and the marketing sitemap carries no pricing page;
    the only commercial path is https://starbridge.ai/book-demo. auth.starbridge.ai/login signs in provisioned accounts —
    there is no public self-serve signup.
  generated: '2026-08-14'
  method: searched
image: https://cdn.prod.website-files.com/68a834f29776727eae1bc0f6/694fa319b9cd6a197c7be433_1_Starbridge%20Homepage%20OpenGraph.webp
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-14'
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-17
x-docs-hosting: vercel
tags:
- Company
- Artificial Intelligence
- Sales Intelligence
- Go-To-Market
- Public Sector
- Education
- Government
- Procurement
- Buyer Intelligence
- MCP
- A2A
tags_raw:
- Company
- Ai
- Sales Intelligence
- Go To Market
- Public Sector
- Education
- Government
- Procurement
- Buyer Intelligence
- MCP
- A2A
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: starbridge:starbridge-bridges-api
  name: Starbridge Bridges API
  description: The Bridges API from Starbridge — 4 operation(s) for bridges.
  humanURL: https://hc.starbridge.ai/api-reference/rest/overview
  baseURL: https://dashboard.starbridge.ai
  tags:
  - Bridge
  tags_raw:
  - Bridges
  properties:
  - type: OpenAPI
    url: openapi/starbridge-bridges-api-openapi.yml
  - type: ErrorCatalog
    url: errors/starbridge-problem-types.yml
  - type: DataModel
    url: data-model/starbridge-data-model.yml
- aid: starbridge:starbridge-buyer-api
  name: Starbridge Buyer API
  description: The Buyer API from Starbridge — 4 operation(s) for buyer.
  humanURL: https://hc.starbridge.ai/api-reference/rest/overview
  baseURL: https://dashboard.starbridge.ai
  tags:
  - Buyer
  properties:
  - type: OpenAPI
    url: openapi/starbridge-buyer-api-openapi.yml
  - type: ErrorCatalog
    url: errors/starbridge-problem-types.yml
  - type: DataModel
    url: data-model/starbridge-data-model.yml
- aid: starbridge:starbridge-columns-api
  name: Starbridge Columns API
  description: The Columns API from Starbridge — 1 operation(s) for columns.
  humanURL: https://hc.starbridge.ai/api-reference/rest/overview
  baseURL: https://dashboard.starbridge.ai
  tags:
  - Columns
  properties:
  - type: OpenAPI
    url: openapi/starbridge-columns-api-openapi.yml
  - type: ErrorCatalog
    url: errors/starbridge-problem-types.yml
  - type: DataModel
    url: data-model/starbridge-data-model.yml
- aid: starbridge:starbridge-external-mcp-api
  name: Starbridge External MCP API
  description: The External MCP API from Starbridge — 11 operation(s) for external mcp.
  humanURL: https://hc.starbridge.ai/api-reference/rest/overview
  baseURL: https://dashboard.starbridge.ai
  tags:
  - External MCP
  properties:
  - type: OpenAPI
    url: openapi/starbridge-external-mcp-api-openapi.yml
  - type: ErrorCatalog
    url: errors/starbridge-problem-types.yml
  - type: DataModel
    url: data-model/starbridge-data-model.yml
- aid: starbridge:starbridge-signal-api
  name: Starbridge Signal API
  description: The Signal API from Starbridge — 2 operation(s) for signal.
  humanURL: https://hc.starbridge.ai/api-reference/rest/overview
  baseURL: https://dashboard.starbridge.ai
  tags:
  - Signal
  properties:
  - type: OpenAPI
    url: openapi/starbridge-signal-api-openapi.yml
  - type: ErrorCatalog
    url: errors/starbridge-problem-types.yml
  - type: DataModel
    url: data-model/starbridge-data-model.yml
common:
- type: OpenAPI
  url: openapi/_original/starbridge-openapi.json
- type: MCPServer
  url: mcp/starbridge-mcp.yml
- type: ToolCrosswalk
  url: mcp/starbridge-tool-crosswalk.yml
- type: AgentCard
  url: a2a/starbridge-a2a.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Packages
  url: packages/starbridge-packages.yml
- type: OAuthScopes
  url: scopes/starbridge-scopes.yml
- type: Plans
  url: plans/starbridge-plans-pricing.yml
- type: RateLimits
  url: rate-limits/starbridge-rate-limits.yml
- type: TrustCenter
  url: security/starbridge-trust-center.yml
- type: Compliance
  url: security/starbridge-trust-center.yml
- type: LLMsTxt
  url: llms/starbridge-llms.txt
- type: Webhooks
  url: asyncapi/starbridge-webhooks.yml
- type: Authentication
  url: authentication/starbridge-authentication.yml
- type: Conventions
  url: conventions/starbridge-conventions.yml
- type: Idempotency
  url: conventions/starbridge-conventions.yml
- type: ChangeLog
  url: changelog/starbridge-changelog.yml
- type: ChangeLog
  url: https://hc.starbridge.ai/release-notes
- type: StatusPage
  url: https://starbridge.statuspage.io
- type: Lifecycle
  url: lifecycle/starbridge-lifecycle.yml
- type: StatusPage
  url: lifecycle/starbridge-lifecycle.yml
- type: ErrorCatalog
  url: errors/starbridge-problem-types.yml
- type: DataModel
  url: data-model/starbridge-data-model.yml
- type: Conformance
  url: conformance/starbridge-conformance.yml
- type: WellKnown
  url: well-known/starbridge-well-known.yml
- type: DomainSecurity
  url: security/starbridge-domain-security.yml
- type: Overlay
  url: overlays/starbridge-openapi-overlay.yaml
- type: Documentation
  url: https://hc.starbridge.ai
- type: APIReference
  url: https://hc.starbridge.ai/api-reference/rest/overview
- type: GettingStarted
  url: https://hc.starbridge.ai/api-reference/rest/generating-an-api-key
- type: HelpCenter
  url: https://hc.starbridge.ai
- type: Blog
  url: https://starbridge.ai/blog
- type: GitHubOrganization
  url: https://github.com/starbridge-ai
- type: SignUp
  url: https://auth.starbridge.ai/login
- type: TermsOfService
  url: https://starbridge.ai/terms-of-service
- type: PrivacyPolicy
  url: https://starbridge.ai/privacy-policy
- type: Website
  url: https://starbridge.ai
- type: Support
  url: mailto:support@starbridge.ai
x-enrichment:
  date: '2026-08-14'
  status: enriched
  artifacts_added: 9
  pass: local-v1
x-a2a:
  verified: true
  probed: '2026-09-26'
  url: https://hc.starbridge.ai/.well-known/agent-card.json
  grade: conformant
  protocol_version: '0.3'
  control: 404

Starbridge API — frequently asked questions

Does Starbridge have an API?

Yes. APIs.io lists 5 APIs from Starbridge, including Starbridge Bridges API, Starbridge Buyer API and Starbridge Columns API, and 2 more.

Is there an OpenAPI specification for the Starbridge API?

Yes. APIs.io indexes 5 OpenAPI specifications for Starbridge, each linked for download from this page.

How do I authenticate with the Starbridge API?

Starbridge documents its authentication (http · 1 scheme). The details are profiled on APIs.io as Starbridge Authentication.

Does Starbridge have an MCP server?

Yes. APIs.io lists 1 MCP server for Starbridge: Official hosted, remote Model Context Protocol server that brings a Starbridge organization's bridges, feed, signals, and buyer research into any MCP client. Installs as a Claude plugin or as a custom

Is the Starbridge API ready for AI agents?

Starbridge has a Kin Score of 56.4 out of 100 (strong) and an Agent Readiness score of 61.6 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

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get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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