Follow Up Boss

Follow Up Boss is a real estate CRM and lead management platform helping agents and teams capture leads from any source, automate follow-up via texts, emails, and calls, manage pipelines and deals, and track team performance. The Follow Up Boss REST API exposes resources such as people, notes, tasks, deals, calls, text messages, events, and webhooks, secured with HTTP Basic authentication using an API key obtained from the application's admin settings.

Follow Up Boss publishes 9 API contracts indexed on the APIs.io network, including Calls API, Deals API, Events API, and 6 more. Tagged areas include Real Estate, CRM, Lead Management, Sales Automation, and Follow Up.

The Follow Up Boss catalog on APIs.io includes 1 Spectral governance ruleset.

Follow Up Boss’ developer surface includes authentication, documentation, pricing, signup flow, support, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

23.0/100 emerging ▬ flat Agent 23/100 agent aware Front door AI 3/6 light Heartbeat 0/100 dormant saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract

Real Estate CRM Lead Management Sales Automation Follow Up Pipeline Management

What this lets a business do 3

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Sales Management

BC-410

DealsEvents

POST /deals POST /events

Customer Relationship Management

BC-420

People

GET /people GET /people/checkDuplicate

Developer Platform & API Ecosystem Management

BC-4270

Webhooks

POST /webhooks DELETE /webhooks/{id}

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 23.0/100 · emerging

Contract Quality 0.6 / 19

Developer Ergonomics 5.2 / 15

Access Clarity 2.9 / 15

Operational Transparency 2.1 / 10

Contract Governance 1.2 / 9

Discoverability 5.5 / 8

Regulatory Posture 2.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 23/100 · 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 0 / 7

Typed Event Surface 6 / 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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/follow-up-boss/"><img src="https://apis.io/badge/follow-up-boss/card.svg" alt="Follow Up Boss on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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 Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →

9 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 3.4 — up to +24.2 composite points Ask about this →
Access Clarity scores 19.1 — up to +16.2 composite points Ask about this →
Developer Ergonomics scores 34.5 — up to +13.1 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/follow-up-boss/apis.yml: open an issue on github.com/api-evangelist/follow-up-boss 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
IFTTT Services (service publishers)	long-tail	5.9	-	-

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 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 9

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

Follow Up Boss API

REST API for managing real estate leads, contacts, deals, notes, tasks, calls, text messages, events, and webhooks in Follow Up Boss. Authenticated with HTTP Basic using an API ...

Follow Up Boss Calls API

The Calls API from Follow Up Boss — 2 operation(s) for calls.

Follow Up Boss Deals API

The Deals API from Follow Up Boss — 2 operation(s) for deals.

Follow Up Boss Events API

The Events API from Follow Up Boss — 2 operation(s) for events.

Follow Up Boss Notes API

The Notes API from Follow Up Boss — 2 operation(s) for notes.

Follow Up Boss People API

The People API from Follow Up Boss — 5 operation(s) for people.

Follow Up Boss Tasks API

The Tasks API from Follow Up Boss — 2 operation(s) for tasks.

Follow Up Boss TextMessages API

The TextMessages API from Follow Up Boss — 2 operation(s) for textmessages.

Follow Up Boss Webhooks API

The Webhooks API from Follow Up Boss — 2 operation(s) for webhooks.

Scroll for all 9

Open Collections 9

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

Follow Up Boss Calls API

OPEN COLLECTION

Follow Up Boss Calls Deals API

OPEN COLLECTION

Follow Up Boss Calls Events API

OPEN COLLECTION

Follow Up Boss Calls Notes API

OPEN COLLECTION

Follow Up Boss Calls People API

OPEN COLLECTION

Follow Up Boss Calls Tasks API

OPEN COLLECTION

Follow Up Boss Calls TextMessages API

OPEN COLLECTION

Follow Up Boss Calls Webhooks API

OPEN COLLECTION

Follow Up Boss API

OPEN COLLECTION

Scroll for all 9

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Follow Up Boss API Rules

47 rules · 45 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 3

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

Follow Up Boss Authentication

http · 1 scheme

SECURITY

Follow Up Boss Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Follow Up Boss Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

Follow Up Boss Agentic Access

37 operations · 20 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Signup

Signup

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 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: follow-up-boss
name: Follow Up Boss
description: Follow Up Boss is a real estate CRM and lead management platform helping agents and teams capture leads from
  any source, automate follow-up via texts, emails, and calls, manage pipelines and deals, and track team performance. The
  Follow Up Boss REST API exposes resources such as people, notes, tasks, deals, calls, text messages, events, and webhooks,
  secured with HTTP Basic authentication using an API key obtained from the application's admin settings.
type: Index
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: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/follow-up-boss.png
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-03
tags:
- Real Estate
- CRM
- Lead Management
- Sales Automation
- Follow Up
- Pipeline Management
tags_raw:
- Real Estate
- CRM
- Lead Management
- Sales Automation
- Follow Up
- Pipeline Management
- Real-Estate
url: https://raw.githubusercontent.com/api-evangelist/follow-up-boss/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.23'
apis:
- aid: follow-up-boss:rest-api
  name: Follow Up Boss API
  description: REST API for managing real estate leads, contacts, deals, notes, tasks, calls, text messages, events, and webhooks
    in Follow Up Boss. Authenticated with HTTP Basic using an API key issued from the Follow Up Boss admin settings. HTTPS
    is required for all requests.
  humanURL: https://docs.followupboss.com
  baseURL: https://api.followupboss.com/v1
  tags:
  - Real Estate
  - CRM
  - Leads
  - Deals
  - Webhook
  tags_raw:
  - Real Estate
  - CRM
  - Leads
  - Deals
  - Webhooks
  - Real-Estate
  properties:
  - type: Documentation
    url: https://docs.followupboss.com/reference
  - type: GettingStarted
    url: https://docs.followupboss.com/reference/getting-started
  - type: Authentication
    url: https://docs.followupboss.com/reference/authentication
  - type: Webhooks
    url: https://docs.followupboss.com/reference/webhooks
- aid: follow-up-boss:follow-up-boss-calls-api
  name: Follow Up Boss Calls API
  description: The Calls API from Follow Up Boss — 2 operation(s) for calls.
  humanURL: https://docs.followupboss.com
  baseURL: https://api.followupboss.com/v1
  tags:
  - Calls
  properties:
  - type: OpenAPI
    url: openapi/follow-up-boss-calls-api-openapi.yml
- aid: follow-up-boss:follow-up-boss-deals-api
  name: Follow Up Boss Deals API
  description: The Deals API from Follow Up Boss — 2 operation(s) for deals.
  humanURL: https://docs.followupboss.com
  baseURL: https://api.followupboss.com/v1
  tags:
  - Deals
  properties:
  - type: OpenAPI
    url: openapi/follow-up-boss-deals-api-openapi.yml
- aid: follow-up-boss:follow-up-boss-events-api
  name: Follow Up Boss Events API
  description: The Events API from Follow Up Boss — 2 operation(s) for events.
  humanURL: https://docs.followupboss.com
  baseURL: https://api.followupboss.com/v1
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/follow-up-boss-events-api-openapi.yml
- aid: follow-up-boss:follow-up-boss-notes-api
  name: Follow Up Boss Notes API
  description: The Notes API from Follow Up Boss — 2 operation(s) for notes.
  humanURL: https://docs.followupboss.com
  baseURL: https://api.followupboss.com/v1
  tags:
  - Notes
  properties:
  - type: OpenAPI
    url: openapi/follow-up-boss-notes-api-openapi.yml
- aid: follow-up-boss:follow-up-boss-people-api
  name: Follow Up Boss People API
  description: The People API from Follow Up Boss — 5 operation(s) for people.
  humanURL: https://docs.followupboss.com
  baseURL: https://api.followupboss.com/v1
  tags:
  - People
  properties:
  - type: OpenAPI
    url: openapi/follow-up-boss-people-api-openapi.yml
- aid: follow-up-boss:follow-up-boss-tasks-api
  name: Follow Up Boss Tasks API
  description: The Tasks API from Follow Up Boss — 2 operation(s) for tasks.
  humanURL: https://docs.followupboss.com
  baseURL: https://api.followupboss.com/v1
  tags:
  - Task
  tags_raw:
  - Tasks
  properties:
  - type: OpenAPI
    url: openapi/follow-up-boss-tasks-api-openapi.yml
- aid: follow-up-boss:follow-up-boss-textmessages-api
  name: Follow Up Boss TextMessages API
  description: The TextMessages API from Follow Up Boss — 2 operation(s) for textmessages.
  humanURL: https://docs.followupboss.com
  baseURL: https://api.followupboss.com/v1
  tags:
  - Text Messages
  tags_raw:
  - TextMessages
  properties:
  - type: OpenAPI
    url: openapi/follow-up-boss-textmessages-api-openapi.yml
- aid: follow-up-boss:follow-up-boss-webhooks-api
  name: Follow Up Boss Webhooks API
  description: The Webhooks API from Follow Up Boss — 2 operation(s) for webhooks.
  humanURL: https://docs.followupboss.com
  baseURL: https://api.followupboss.com/v1
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/follow-up-boss-webhooks-api-openapi.yml
common:
- type: CapabilityMap
  url: capabilities/follow-up-boss-capability-edges.yml
  name: Follow Up Boss Business Capability Map
- type: AgenticAccess
  url: agentic-access/follow-up-boss-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/follow-up-boss-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/follow-up-boss-domain-security.yml
- type: Authentication
  url: authentication/follow-up-boss-authentication.yml
- type: GitHubOrganization
  url: https://github.com/FollowUpBoss
- type: LinkedIn
  url: https://www.linkedin.com/company/follow-up-boss
- type: Website
  url: https://www.followupboss.com
- type: Documentation
  url: https://docs.followupboss.com
- type: Pricing
  url: https://www.followupboss.com/pricing
- type: Signup
  url: https://www.followupboss.com/free-trial
- type: Support
  url: https://help.followupboss.com
- type: StatusPage
  url: https://status.followupboss.com
- type: LlmsText
  url: https://docs.followupboss.com/llms.txt
- url: https://www.followupboss.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Follow Up Boss API — frequently asked questions

Does Follow Up Boss have an API?

Yes. APIs.io lists 9 APIs from Follow Up Boss, including Follow Up Boss API, Follow Up Boss Calls API and Follow Up Boss Deals API, and 6 more.

Is there an OpenAPI specification for the Follow Up Boss API?

Yes. APIs.io indexes 8 OpenAPI specifications for Follow Up Boss, each linked for download from this page.

How do I authenticate with the Follow Up Boss API?

Follow Up Boss uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Follow Up Boss Authentication.

Is the Follow Up Boss API ready for AI agents?

Follow Up Boss has a Kin Score of 23.0 out of 100 (emerging) and an Agent Readiness score of 22.8 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
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.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/follow-up-boss"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/follow-up-boss/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/follow-up-boss/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.