sendfaxfast-com

SendFaxFast provides an online fax service that allows users to send faxes to the IRS, Social Security Administration, Veterans Affairs, Canada Revenue Agency, and medical providers without a physical fax machine. Operating from Germany and run by Alexander Mäding, the platform offers low-cost pricing starting at $2.89 per fax, includes proof of delivery, and guarantees a full refund if a fax is not delivered. The service supports PDF, JPG, and PNG files up to 10 MB and integrates via a public API documented at /api-docs.

sendfaxfast-com is listed with 1 API on the APIs.io network. Tagged areas include Fax, API, Payments, Healthcare, and Government.

sendfaxfast-com’s developer surface includes authentication, pricing, documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

26.5/100 thin Agent 22/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

FaxAPIPayments Healthcare Government Germany

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 26.5/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 10.7 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 5.6 / 9

Regulatory Posture 4.3 / 15

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Health 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
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
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 23.8 — up to +15.2 composite points
Operational Transparency scores 0.0 — up to +13.0 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/sendfaxfast-com/apis.yml: open an issue on github.com/api-evangelist/sendfaxfast-com 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 →

APIs 1

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

SendFaxFast API

SendFaxFast API allows sending faxes via a POST /send-fax.php endpoint.

Pricing Plans 1

Published pricing tiers and plan structures.

Sendfaxfast Com Plans Pricing

6 plans

PLANS

Security Posture 2

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

Sendfaxfast Com Authentication

1 scheme

SECURITY

Sendfaxfast Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Sendfaxfast Com Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

ErrorCatalog

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: sendfaxfast-com
name: sendfaxfast-com
description: SendFaxFast provides an online fax service that allows users to send faxes to the IRS, Social Security Administration,
  Veterans Affairs, Canada Revenue Agency, and medical providers without a physical fax machine. Operating from Germany and
  run by Alexander Mäding, the platform offers low-cost pricing starting at $2.89 per fax, includes proof of delivery, and
  guarantees a full refund if a fax is not delivered. The service supports PDF, JPG, and PNG files up to 10 MB and integrates
  via a public API documented at /api-docs.
url: https://artifacts.apis.io/sendfaxfast-com/apis.yml
image: https://sendfaxfast.com/sendfaxfast-og.png
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Fax
- API
- Payments
- Healthcare
- Government
- Germany
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/sendfaxfast-com-plans-pricing.yml
- type: Authentication
  url: authentication/sendfaxfast-com-authentication.yml
- type: ErrorCatalog
  url: errors/sendfaxfast-com-problem-types.yml
- type: LLMsTxt
  url: llms/sendfaxfast-com-llms.txt
- type: WellKnown
  url: well-known/sendfaxfast-com-well-known.yml
- type: Hosts
  url: hosts/sendfaxfast-com-hosts.yml
- type: Pricing
  url: https://sendfaxfast.com/plans.html
- type: DomainSecurity
  url: security/sendfaxfast-com-domain-security.yml
- type: Website
  url: https://sendfaxfast.com/
- type: Documentation
  url: https://sendfaxfast.com/api-docs
- type: Blog
  url: https://sendfaxfast.com/blog/
- type: TermsOfService
  url: https://sendfaxfast.com/terms
- type: PrivacyPolicy
  url: https://sendfaxfast.com/privacy-policy.html
apis:
- name: SendFaxFast API
  description: SendFaxFast API allows sending faxes via a POST /send-fax.php endpoint.
  humanURL: https://sendfaxfast.com/api-docs.html
  baseURL: https://sendfaxfast.com
  aid: sendfaxfast-com:sendfaxfast-api
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: API documentation is public HTML but provides no machine‑readable OpenAPI/Swagger/GraphQL spec.
  evidence:
  - url: https://sendfaxfast.com/api-docs.html
    status: 200
  checked: '2026-10-30'
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 24
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

sendfaxfast-com API — frequently asked questions

Does sendfaxfast-com have an API?

Yes. APIs.io lists 1 API from sendfaxfast-com, including SendFaxFast API.

How do I authenticate with the sendfaxfast-com API?

sendfaxfast-com documents its authentication (1 scheme). The details are profiled on APIs.io as Sendfaxfast Com Authentication.

How much does the sendfaxfast-com API cost?

APIs.io lists 6 pricing plans for sendfaxfast-com, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the sendfaxfast-com API ready for AI agents?

sendfaxfast-com has a Kin Score of 26.5 out of 100 (thin) and an Agent Readiness score of 21.6 (agent-aware), scored by API Evangelist on 2026-10-31.

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