Subspace

Subspace was a real-time network-as-a-service platform delivering a dedicated, performance-optimized global network for latency-sensitive applications — WebRTC, VoIP/SIP calling, video conferencing, multiplayer gaming, and fintech. Its Product API provisions three services: PacketAccelerator (no-code global internet acceleration), SIPTeleport (SIP/VoIP call-quality improvement), and WebRTC-CDN (instant global WebRTC acceleration with ICE server configuration). The REST API uses resource-oriented URLs and JSON responses, versioned at v1, authenticated with OAuth2 client-credentials issuing 24-hour JWT bearer tokens via Auth0, and ships six first-party OpenAPI client SDKs. The company was a Bloomberg Beta portfolio company; its marketing site remains live while the API, identity, and status hosts have wound down operationally.

Subspace publishes 3 APIs on the APIs.io network: AcceleratorService API, SipTeleportService API, and WebRtcCdnService API. Tagged areas include Company, Networking, Real-Time, WebRTC, and VoIP.

Subspace’s developer surface includes documentation, API reference, pricing, signup flow, authentication, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

33.3/100 thin ▬ flat Agent 30/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs

Company Networking Real-Time WebRTC VoIP SIP CDN Gaming Latency Infrastructure

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 33.3/100 · thin

Contract Quality 11.0 / 23

Developer Ergonomics 7.6 / 18

Access Clarity 3.1 / 18

Operational Transparency 1.5 / 12

Contract Governance 0.5 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

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 github.com/api-evangelist/subspace: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

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

Subspace AcceleratorService API

The AcceleratorService API from Subspace — 2 operation(s) for acceleratorservice.

Subspace SipTeleportService API

The SipTeleportService API from Subspace — 2 operation(s) for sipteleportservice.

Subspace WebRtcCdnService API

The WebRtcCdnService API from Subspace — 1 operation(s) for webrtccdnservice.

Open Collections 4

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

API Collection

OPEN COLLECTION

Subspace Product AcceleratorService API

OPEN COLLECTION

Subspace Product AcceleratorService SipTeleportService API

OPEN COLLECTION

Subspace Product AcceleratorService WebRtcCdnService API

OPEN COLLECTION

Security Posture 3

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

Subspace Authentication

oauth2 · 1 scheme

SECURITY

Subspace Domain Security

TLSv1.3 · HSTS · DNSSEC

SECURITY

Subspace Vulnerability Disclosure

Bugcrowd

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Subspace Scopes

9 scopes · clientCredentials

9 scopes

SCOPES

Agentic Access 1

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

Subspace Agentic Access

11 operations · 7 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

X-MCPServerCandidate

AgentSkill

AgenticAccess

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

DataModel

ErrorCatalog

Lifecycle

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 5

Authentication, authorization, and security posture

Security

Authentication

OAuthScopes

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: subspace
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/subspace.png
name: Subspace
description: 'Subspace was a real-time network-as-a-service platform delivering a dedicated, performance-optimized global
  network for latency-sensitive applications — WebRTC, VoIP/SIP calling, video conferencing, multiplayer gaming, and fintech.
  Its Product API provisions three services: PacketAccelerator (no-code global internet acceleration), SIPTeleport (SIP/VoIP
  call-quality improvement), and WebRTC-CDN (instant global WebRTC acceleration with ICE server configuration). The REST API
  uses resource-oriented URLs and JSON responses, versioned at v1, authenticated with OAuth2 client-credentials issuing 24-hour
  JWT bearer tokens via Auth0, and ships six first-party OpenAPI client SDKs. The company was a Bloomberg Beta portfolio company;
  its marketing site remains live while the API, identity, and status hosts have wound down operationally.'
url: https://raw.githubusercontent.com/api-evangelist/subspace/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- bloomberg-beta
x-tier: enriched
x-tier-reason: real-api-surface
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Networking
- Real-Time
- WebRTC
- VoIP
- SIP
- CDN
- Gaming
- Latency
- Infrastructure
apis:
- aid: subspace:subspace-acceleratorservice-api
  name: Subspace AcceleratorService API
  description: The AcceleratorService API from Subspace — 2 operation(s) for acceleratorservice.
  humanURL: https://www.subspace.com/
  baseURL: https://api.subspace.com/v1
  tags:
  - AcceleratorService
  properties:
  - type: OpenAPI
    url: openapi/subspace-acceleratorservice-api-openapi.yml
- aid: subspace:subspace-sipteleportservice-api
  name: Subspace SipTeleportService API
  description: The SipTeleportService API from Subspace — 2 operation(s) for sipteleportservice.
  humanURL: https://www.subspace.com/
  baseURL: https://api.subspace.com/v1
  tags:
  - SipTeleportService
  properties:
  - type: OpenAPI
    url: openapi/subspace-sipteleportservice-api-openapi.yml
- aid: subspace:subspace-webrtccdnservice-api
  name: Subspace WebRtcCdnService API
  description: The WebRtcCdnService API from Subspace — 1 operation(s) for webrtccdnservice.
  humanURL: https://www.subspace.com/
  baseURL: https://api.subspace.com/v1
  tags:
  - WebRtcCdnService
  properties:
  - type: OpenAPI
    url: openapi/subspace-webrtccdnservice-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/subspace-openapi-overlay.yaml
- type: Website
  url: https://www.subspace.com/
- type: DeveloperPortal
  url: https://console.subspace.com/
- type: Documentation
  url: https://subspace.com/resources?category=documentation
- type: APIReference
  url: https://subspace.com/api
- type: Pricing
  url: https://subspace.com/pricing
- type: SignUp
  url: https://console.subspace.com/
- type: Security
  url: https://subspace.com/security
- type: GitHubOrganization
  url: https://github.com/subspace-com
- type: LLMsTxt
  url: llms/subspace-llms.txt
- type: Packages
  url: packages/subspace-packages.yml
- type: SDKs
  url: packages/subspace-packages.yml
- type: X-MCPServerCandidate
  url: mcp/subspace-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: AgentSkill
  url: skills/_index.yml
- type: Conventions
  url: conventions/subspace-conventions.yml
- type: DataModel
  url: data-model/subspace-data-model.yml
- type: ErrorCatalog
  url: errors/subspace-problem-types.yml
- type: Lifecycle
  url: lifecycle/subspace-lifecycle.yml
- type: Conformance
  url: conformance/subspace-conformance.yml
- type: Authentication
  url: authentication/subspace-authentication.yml
- type: OAuthScopes
  url: scopes/subspace-scopes.yml
- type: AgenticAccess
  url: agentic-access/subspace-agentic-access.yml
- type: DomainSecurity
  url: security/subspace-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/subspace-vulnerability-disclosure.yml
- type: WellKnown
  url: well-known/subspace-well-known.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 17
  pass: local-v1

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