Documo website screenshot

Documo

Documo (mFax) is a cloud fax and document delivery platform. The Documo REST API lets developers send and receive faxes, provision and manage fax numbers, subscribe to delivery events via webhooks, and manage account resources over a JSON/HTTPS interface secured with an API key.

Documo publishes 4 APIs on the APIs.io network, including Account API, Fax API, Numbers API, and 1 more. Tagged areas include Fax, Cloud Fax, Document Delivery, HIPAA, and Communications.

Documo’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.4/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessPaidSelf serveFree trial⚡ Free to try
4 APIs
FaxCloud FaxDocument DeliveryHIPAACommunications

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 40.4/100 · thin
Contract Quality 15.1 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 9.5 / 20
Operational Transparency 4.1 / 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/documo: 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 4

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

Documo Account API

Read account profile and settings.

Documo Fax API

Send, resend, retrieve, list, and download faxes.

Documo Numbers API

Search, provision, list, and release inbound fax numbers.

Documo Webhooks API

Manage webhook subscriptions for fax and number events.

Open Collections 1

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

Documo API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Documo Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Documo Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

Documo Finops

FINOPS

Security Posture 3

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

Documo Authentication

http · 1 scheme

SECURITY

Documo Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Documo Trust Center

SOC 2, HIPAA

SECURITY

Agentic Access 1

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

Documo Agentic Access

13 operations · 6 acting

13 operations · 6 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 3

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 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
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: documo
url: https://raw.githubusercontent.com/api-evangelist/documo/refs/heads/main/apis.yml
name: Documo
kind: company
description: Documo (mFax) is a cloud fax and document delivery platform. The Documo REST API lets developers send and receive
  faxes, provision and manage fax numbers, subscribe to delivery events via webhooks, and manage account resources over a
  JSON/HTTPS interface secured with an API key.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Paid (free trial) · 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/documo.png
tags:
- Fax
- Cloud Fax
- Document Delivery
- HIPAA
- Communications
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.19'
apis:
- aid: documo:documo-account-api
  name: Documo Account API
  description: Read account profile and settings.
  humanURL: https://docs.documo.com/
  baseURL: https://api.documo.com/v1
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/documo-account-api-openapi.yml
  - type: Documentation
    url: https://docs.documo.com/
  - type: APIReference
    url: https://docs.documo.com/#send-a-fax
  - type: Postman
    url: collections/documo.postman_collection.json
  - type: Documentation
    url: https://docs.documo.com/#create-webhook
- aid: documo:documo-fax-api
  name: Documo Fax API
  description: Send, resend, retrieve, list, and download faxes.
  humanURL: https://docs.documo.com/
  baseURL: https://api.documo.com/v1
  tags:
  - Fax
  properties:
  - type: OpenAPI
    url: openapi/documo-fax-api-openapi.yml
  - type: Documentation
    url: https://docs.documo.com/
  - type: APIReference
    url: https://docs.documo.com/#send-a-fax
  - type: Postman
    url: collections/documo.postman_collection.json
  - type: Documentation
    url: https://docs.documo.com/#create-webhook
- aid: documo:documo-numbers-api
  name: Documo Numbers API
  description: Search, provision, list, and release inbound fax numbers.
  humanURL: https://docs.documo.com/
  baseURL: https://api.documo.com/v1
  tags:
  - Numbers
  properties:
  - type: OpenAPI
    url: openapi/documo-numbers-api-openapi.yml
  - type: Documentation
    url: https://docs.documo.com/
  - type: APIReference
    url: https://docs.documo.com/#send-a-fax
  - type: Postman
    url: collections/documo.postman_collection.json
  - type: Documentation
    url: https://docs.documo.com/#create-webhook
- aid: documo:documo-webhooks-api
  name: Documo Webhooks API
  description: Manage webhook subscriptions for fax and number events.
  humanURL: https://docs.documo.com/
  baseURL: https://api.documo.com/v1
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/documo-webhooks-api-openapi.yml
  - type: Documentation
    url: https://docs.documo.com/
  - type: APIReference
    url: https://docs.documo.com/#send-a-fax
  - type: Postman
    url: collections/documo.postman_collection.json
  - type: Documentation
    url: https://docs.documo.com/#create-webhook
common:
- type: AgenticAccess
  url: agentic-access/documo-agentic-access.yml
- type: TrustCenter
  url: security/documo-trust-center.yml
- type: DomainSecurity
  url: security/documo-domain-security.yml
- type: Authentication
  url: authentication/documo-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/documo
- type: Website
  url: https://www.documo.com/
- type: Documentation
  url: https://docs.documo.com/
- type: Plans
  url: plans/documo-plans-pricing.yml
- type: RateLimits
  url: rate-limits/documo-rate-limits.yml
- type: FinOps
  url: finops/documo-finops.yml
- url: https://www.documo.com/blog/feed/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com