SignUp.com

SignUp.com provides online sign‑up sheets and coordination solutions for schools, churches, teams, nonprofits, and businesses. Their platform enables users to create, share, and manage sign‑up forms, streamline event planning, and collaborate efficiently across various organizations.

SignUp.com is listed with 1 API on the APIs.io network. Tagged areas include SaaS, Scheduling, Volunteer, Education, and Nonprofit.

SignUp.com’s developer surface includes support, signup flow, pricing, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

22.1/100 emerging Agent 11/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

SaaSSchedulingVolunteerEducationNonprofit

Kin Score

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

Composite quality — 22.1/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 0.8 / 17

Access Clarity 13.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.9 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 11/100 · 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 0 / 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 0 / 5

Registration Without a Human 0 / 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 Education & Research 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
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

11 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 4.8 — up to +19.0 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/signup-com/apis.yml: open an issue on github.com/api-evangelist/signup-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.

SignUp API

SignUp.com provides an API for managing sign‑up sheets, events, and participants. Documentation is not publicly available.

Pricing Plans 1

Published pricing tiers and plan structures.

Signup Com Plans Pricing

5 plans

PLANS

Security Posture 1

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

Signup Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: signup-com
name: SignUp.com
image: https://vspot.s3.amazonaws.com/sign-up/Facebook-Images/SignUp-Facebook-Default-Image.jpg
description: SignUp.com provides online sign‑up sheets and coordination solutions for schools, churches, teams, nonprofits,
  and businesses. Their platform enables users to create, share, and manage sign‑up forms, streamline event planning, and
  collaborate efficiently across various organizations.
url: https://raw.githubusercontent.com/api-evangelist/signup-com/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-27 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-27'
modified: '2026-10-27'
tags:
- SaaS
- Scheduling
- Volunteer
- Education
- Nonprofit
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/signup-com-plans-pricing.yml
- type: WellKnown
  url: well-known/signup-com-well-known.yml
- type: Hosts
  url: hosts/signup-com-hosts.yml
- type: Vendors
  url: vendors/signup-com-vendors.yml
- type: TermsOfService
  url: https://signup.com/Terms
- type: Support
  url: https://support.signup.com/
- type: SignUp
  url: https://signup.com
- type: PrivacyPolicy
  url: https://signup.com/Privacy
- type: Pricing
  url: https://signup.com/Pricing
- type: DomainSecurity
  url: security/signup-com-domain-security.yml
- type: Website
  url: https://signup.com/
apis:
- name: SignUp API
  description: SignUp.com provides an API for managing sign‑up sheets, events, and participants. Documentation is not publicly
    available.
  humanURL: https://signup.com/Pricing
  aid: signup-com:signup-api
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation pages redirect to 404, no public OpenAPI or other machine‑readable contract is available.
  evidence:
  - url: https://signup.com/developers
    status: 404
  - url: https://signup.com/api-docs
    status: 404
  - url: https://signup.com/docs
    status: 404
  checked: '2026-10-27'
x-submission-probe: 200, 2026-10-26
x-enrichment:
  date: '2026-10-27'
  status: enriched
  artifacts_added: 11
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

SignUp.com API — frequently asked questions

Does SignUp.com have an API?

Yes. APIs.io lists 1 API from SignUp.com, including SignUp API.

How much does the SignUp.com API cost?

APIs.io lists 5 pricing plans for SignUp.com, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the SignUp.com API ready for AI agents?

SignUp.com has a Kin Score of 22.1 out of 100 (emerging) and an Agent Readiness score of 10.8 (agent-aware), scored by API Evangelist on 2026-10-31.

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