Bloomerang

Bloomerang is a cloud-based donor management and fundraising CRM built for small and mid-size nonprofits, covering constituent records, donations and pledges, communications, and reporting. Bloomerang acquired fellow nonprofit platform Kindful in January 2021, but Kindful continues to run its own separate API and product line; this entry documents Bloomerang's own REST API v2 (base https://api.bloomerang.co/v2), authenticated with a private API key or OAuth 2.0, for managing constituents, transactions, interactions, and related donor data.

Bloomerang publishes 9 APIs on the APIs.io network, including Constituents API, Custom Fields API, Households API, and 6 more. Tagged areas include Nonprofit, Donor Management, CRM, Fundraising, and Fundraising Software.

Bloomerang’s developer surface includes authentication, documentation, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

41.1/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessPaidSelf serve

9 APIs

NonprofitDonor ManagementCRMFundraisingFundraising Software

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 41.1/100 · thin

Contract Quality 15.1 / 25

Developer Ergonomics 4.3 / 20

Commercial Clarity 9.5 / 20

Operational Transparency 4.8 / 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/bloomerang: 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 9

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

Rate Limits 1

Documented rate limits and quota policies.

Bloomerang Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Scopes 1

OAuth scopes governing access to this provider's APIs.

Bloomerang Scopes

1 scope · authorizationCode

1 scopes

SCOPES

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

DomainSecurity

Authentication

OAuthScopes

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: bloomerang
url: https://raw.githubusercontent.com/api-evangelist/bloomerang/refs/heads/main/apis.yml
name: Bloomerang
kind: company
description: Bloomerang is a cloud-based donor management and fundraising CRM built for small and mid-size nonprofits, covering
  constituent records, donations and pledges, communications, and reporting. Bloomerang acquired fellow nonprofit platform
  Kindful in January 2021, but Kindful continues to run its own separate API and product line; this entry documents Bloomerang's
  own REST API v2 (base https://api.bloomerang.co/v2), authenticated with a private API key or OAuth 2.0, for managing constituents,
  transactions, interactions, and related donor data.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · 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/bloomerang.png
tags:
- Nonprofit
- Donor Management
- CRM
- Fundraising
- Fundraising Software
created: '2026-07-03'
modified: '2026-07-03'
specificationVersion: '0.19'
apis:
- aid: bloomerang:bloomerang-constituents-api
  name: Bloomerang Constituents API
  description: Individuals, households, and organizations tracked as donors and contacts.
  humanURL: https://bloomerang.com/api/rest-api
  baseURL: https://api.bloomerang.co/v2
  tags:
  - Constituents
  properties:
  - type: OpenAPI
    url: openapi/bloomerang-constituents-api-openapi.yml
  - type: Documentation
    url: https://bloomerang.com/api/rest-api
- aid: bloomerang:bloomerang-custom-fields-api
  name: Bloomerang Custom Fields API
  description: Account-specific custom field definitions by object type.
  humanURL: https://bloomerang.com/api/rest-api
  baseURL: https://api.bloomerang.co/v2
  tags:
  - Custom Fields
  properties:
  - type: OpenAPI
    url: openapi/bloomerang-custom-fields-api-openapi.yml
  - type: Documentation
    url: https://bloomerang.com/api/rest-api
- aid: bloomerang:bloomerang-households-api
  name: Bloomerang Households API
  description: Family-unit grouping of individual constituents.
  humanURL: https://bloomerang.com/api/rest-api
  baseURL: https://api.bloomerang.co/v2
  tags:
  - Households
  properties:
  - type: OpenAPI
    url: openapi/bloomerang-households-api-openapi.yml
  - type: Documentation
    url: https://bloomerang.com/api/rest-api
- aid: bloomerang:bloomerang-interactions-api
  name: Bloomerang Interactions API
  description: Logged touches between the organization and a constituent.
  humanURL: https://bloomerang.com/api/rest-api
  baseURL: https://api.bloomerang.co/v2
  tags:
  - Interactions
  properties:
  - type: OpenAPI
    url: openapi/bloomerang-interactions-api-openapi.yml
  - type: Documentation
    url: https://bloomerang.com/api/rest-api
- aid: bloomerang:bloomerang-notes-api
  name: Bloomerang Notes API
  description: Freeform notes attached to a constituent record.
  humanURL: https://bloomerang.com/api/rest-api
  baseURL: https://api.bloomerang.co/v2
  tags:
  - Notes
  properties:
  - type: OpenAPI
    url: openapi/bloomerang-notes-api-openapi.yml
  - type: Documentation
    url: https://bloomerang.com/api/rest-api
- aid: bloomerang:bloomerang-reference-data-api
  name: Bloomerang Reference Data API
  description: Users, funds, campaigns, and appeals used as designations and attribution.
  humanURL: https://bloomerang.com/api/rest-api
  baseURL: https://api.bloomerang.co/v2
  tags:
  - Reference Data
  properties:
  - type: OpenAPI
    url: openapi/bloomerang-reference-data-api-openapi.yml
  - type: Documentation
    url: https://bloomerang.com/api/rest-api
- aid: bloomerang:bloomerang-relationships-api
  name: Bloomerang Relationships API
  description: Relationships between two constituents.
  humanURL: https://bloomerang.com/api/rest-api
  baseURL: https://api.bloomerang.co/v2
  tags:
  - Relationships
  properties:
  - type: OpenAPI
    url: openapi/bloomerang-relationships-api-openapi.yml
  - type: Documentation
    url: https://bloomerang.com/api/rest-api
- aid: bloomerang:bloomerang-transactions-api
  name: Bloomerang Transactions API
  description: Donations, pledges, pledge payments, and recurring donation designations.
  humanURL: https://bloomerang.com/api/rest-api
  baseURL: https://api.bloomerang.co/v2
  tags:
  - Transactions
  properties:
  - type: OpenAPI
    url: openapi/bloomerang-transactions-api-openapi.yml
  - type: Documentation
    url: https://bloomerang.com/api/rest-api
- aid: bloomerang:bloomerang-webhooks-api
  name: Bloomerang Webhooks API
  description: Webhook subscriptions for event notifications.
  humanURL: https://bloomerang.com/api/rest-api
  baseURL: https://api.bloomerang.co/v2
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/bloomerang-webhooks-api-openapi.yml
  - type: Documentation
    url: https://bloomerang.com/api/rest-api
common:
- type: AgenticAccess
  url: agentic-access/bloomerang-agentic-access.yml
- type: TrustCenter
  url: security/bloomerang-trust-center.yml
- type: DomainSecurity
  url: security/bloomerang-domain-security.yml
- type: Authentication
  url: authentication/bloomerang-authentication.yml
- type: OAuthScopes
  url: scopes/bloomerang-scopes.yml
- type: GitHubOrganization
  url: https://github.com/Bloomerang
- type: LinkedIn
  url: https://www.linkedin.com/company/bloomerang-donor-management-software
- type: Website
  url: https://bloomerang.com
- type: Documentation
  url: https://bloomerang.com/api
- type: Plans
  url: plans/bloomerang-plans-pricing.yml
- type: RateLimits
  url: rate-limits/bloomerang-rate-limits.yml
- type: FinOps
  url: finops/bloomerang-finops.yml
- url: https://bloomerang.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Bloomerang

Kin Score

APIs 9

Bloomerang Constituents API

Bloomerang Custom Fields API

Bloomerang Households API

Bloomerang Interactions API

Bloomerang Notes API

Bloomerang Reference Data API

Bloomerang Relationships API

Bloomerang Transactions API

Bloomerang Webhooks API

Open Collections 1

Bloomerang REST API v2

Pricing Plans 1

Bloomerang Plans Pricing

Rate Limits 1

Bloomerang Rate Limits

FinOps 1

Bloomerang Finops

Security Posture 3

Bloomerang Authentication

Bloomerang Domain Security

Bloomerang Trust Center