usesignal-dev

useSignal offers a suite of free, browser‑based tools that require no registration. Users can download video or audio from URLs, record screen or voice, compress and merge PDF files, generate QR codes, and format or beautify JSON data. All tools run client‑side, ensuring privacy and quick results, and are accessible via a clean web interface at usesignal.dev.

usesignal-dev is listed with 1 API on the APIs.io network. Tagged areas include Free Tools, Video, Audio, PDF, and QR Codes.

usesignal-dev’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

17.0/100 emerging ▼ -10.4 Agent 6/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessOpen

1 API 1 MCP Servers

Free Tools Video Audio PDF QR Codes JSON

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 17.0/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.3 / 17

Access Clarity 3.8 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.0 / 10

Discoverability 5.5 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 6/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 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 4 / 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 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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

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
Access Clarity scores 22.4 — up to +15.5 composite points
Developer Ergonomics scores 25.0 — up to +15.0 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/usesignal-dev/apis.yml: open an issue on github.com/api-evangelist/usesignal-dev 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 →

Standards implemented 3

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.

JSON

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

PDF

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 1

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

usesignal MCP

Machine Control Protocol (MCP) providing tool definitions for useSignal utilities.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

usesignal-dev MCP Server

Remote MCP server at www.usesignal.dev.

MCP SERVER

Security Posture 2

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

Usesignal Dev Authentication

0 schemes

SECURITY

Usesignal Dev Domain Security

TLSv1.3 · HSTS

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Usesignal Dev Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

Build 1

SDKs, sample code, and the tooling you integrate with

Postman

Postman

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

Roadmap

Roadmap

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: usesignal-dev
name: usesignal-dev
description: useSignal offers a suite of free, browser‑based tools that require no registration. Users can download video
  or audio from URLs, record screen or voice, compress and merge PDF files, generate QR codes, and format or beautify JSON
  data. All tools run client‑side, ensuring privacy and quick results, and are accessible via a clean web interface at usesignal.dev.
url: https://artifacts.apis.io/usesignal-dev/apis.yml
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://www.usesignal.dev/og/usesignal.jpg
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Free Tools
- Video
- Audio
- PDF
- QR Codes
- JSON
tags_raw:
- Free Tools
- Video
- Audio
- PDF
- QR Code
- JSON
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: MCPServer
  url: mcp/usesignal-dev-mcp.yml
- type: Hosts
  url: hosts/usesignal-dev-hosts.yml
- type: Vendors
  url: vendors/usesignal-dev-vendors.yml
- type: DomainSecurity
  url: security/usesignal-dev-domain-security.yml
- type: Website
  url: https://usesignal.dev/
- type: Documentation
  url: https://www.usesignal.dev/docs
- type: APIReference
  url: https://www.usesignal.dev/api
- type: GettingStarted
  url: https://www.usesignal.dev/
- type: Support
  url: https://www.usesignal.dev/support
- type: Blog
  url: https://www.usesignal.dev/blog
- type: Pricing
  url: https://www.usesignal.dev/pricing
- type: TermsOfService
  url: https://www.usesignal.dev/terms
- type: PrivacyPolicy
  url: https://www.usesignal.dev/privacy
- type: Roadmap
  url: https://www.usesignal.dev/roadmap
- type: Postman
  url: https://www.usesignal.dev/postman
- type: SignUp
  url: https://www.usesignal.dev/signup
- type: DeveloperPortal
  url: https://www.usesignal.dev/
apis:
- name: usesignal MCP
  description: Machine Control Protocol (MCP) providing tool definitions for useSignal utilities.
  humanURL: https://www.usesignal.dev/mcp
  baseURL: https://www.usesignal.dev/mcp
  properties:
  - type: MCP
    url: mcp/usesignal-dev-mcp.json
  aid: usesignal-dev:usesignal-mcp
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 19
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

usesignal-dev API — frequently asked questions

Does usesignal-dev have an API?

Yes. APIs.io lists 1 API from usesignal-dev, including usesignal MCP.

How do I authenticate with the usesignal-dev API?

usesignal-dev documents its authentication (0 schemes). The details are profiled on APIs.io as Usesignal Dev Authentication.

Does usesignal-dev have an MCP server?

Yes. APIs.io lists 1 MCP server for usesignal-dev: Remote MCP server at www.usesignal.dev.

Is the usesignal-dev API ready for AI agents?

usesignal-dev has a Kin Score of 17.0 out of 100 (emerging) and an Agent Readiness score of 6.3 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

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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.
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