S2 Dev

aid: s2-dev
name: S2 Dev
description: S2 ("Stream Store") is the API for unlimited, durable, real-time streams. Where object storage deals with blobs,
  S2 provides append-able, ordered record streams that can be tailed in real time and replayed from any retained point. Core
  data-plane operations are append, read, and check-tail; the control plane manages accounts, basins (stream namespaces),
  streams, scoped access tokens, locations, and metrics. It targets agent session logs, live views and build logs, event sourcing
  and sync, data feeds, resumable LLM token streaming, and observability. Access is over a REST/JSON + Protobuf HTTP API,
  an S2S binary protocol over HTTP/2, SSE tailing, first-party TypeScript, Python, Go, and Rust SDKs, a CLI, and a Terraform
  provider. S2 is a Y Combinator-backed company.
url: https://raw.githubusercontent.com/api-evangelist/s2-dev/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
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
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
image: https://avatars.githubusercontent.com/u/136030139?v=4
tags:
- Company
- Streaming
- Real-Time
- Event Streaming
- Durable Storage
- Message Streaming
- Data Feeds
- Observability
- Developer Tools
- Infrastructure
apis:
- aid: s2-dev:s2-dev-access-tokens-api
  name: S2 Dev access-tokens API
  description: Manage access tokens
  humanURL: https://s2.dev/docs/api
  baseURL: https://a.s2.dev/v1
  tags:
  - access-tokens
  properties:
  - type: OpenAPI
    url: openapi/s2-dev-access-tokens-api-openapi.yml
  - type: Protobuf
    url: grpc/s2-dev-s2.proto
- aid: s2-dev:s2-dev-basins-api
  name: S2 Dev basins API
  description: Manage basins
  humanURL: https://s2.dev/docs/api
  baseURL: https://a.s2.dev/v1
  tags:
  - basins
  properties:
  - type: OpenAPI
    url: openapi/s2-dev-basins-api-openapi.yml
  - type: Protobuf
    url: grpc/s2-dev-s2.proto
- aid: s2-dev:s2-dev-locations-api
  name: S2 Dev locations API
  description: Manage locations
  humanURL: https://s2.dev/docs/api
  baseURL: https://a.s2.dev/v1
  tags:
  - locations
  properties:
  - type: OpenAPI
    url: openapi/s2-dev-locations-api-openapi.yml
  - type: Protobuf
    url: grpc/s2-dev-s2.proto
- aid: s2-dev:s2-dev-metrics-api
  name: S2 Dev metrics API
  description: Usage metrics and data.
  humanURL: https://s2.dev/docs/api
  baseURL: https://a.s2.dev/v1
  tags:
  - metrics
  properties:
  - type: OpenAPI
    url: openapi/s2-dev-metrics-api-openapi.yml
  - type: Protobuf
    url: grpc/s2-dev-s2.proto
- aid: s2-dev:s2-dev-records-api
  name: S2 Dev records API
  description: Manage records
  humanURL: https://s2.dev/docs/api
  baseURL: https://a.s2.dev/v1
  tags:
  - records
  properties:
  - type: OpenAPI
    url: openapi/s2-dev-records-api-openapi.yml
  - type: Protobuf
    url: grpc/s2-dev-s2.proto
- aid: s2-dev:s2-dev-streams-api
  name: S2 Dev streams API
  description: Manage streams
  humanURL: https://s2.dev/docs/api
  baseURL: https://a.s2.dev/v1
  tags:
  - streams
  properties:
  - type: OpenAPI
    url: openapi/s2-dev-streams-api-openapi.yml
  - type: Protobuf
    url: grpc/s2-dev-s2.proto
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 26
  pass: local-v1
common:
- type: VulnerabilityDisclosure
  url: security/s2-dev-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/s2-dev-domain-security.yml
- type: AgenticAccess
  url: agentic-access/s2-dev-agentic-access.yml
- type: Authentication
  url: authentication/s2-dev-authentication.yml
- type: Security
  url: https://s2.dev/docs/platform/security
- type: TrustCenter
  url: security/s2-dev-trust-center.yml
- type: Compliance
  url: https://s2.dev/docs/platform/security
- type: DeveloperPortal
  url: https://s2.dev/docs
- type: Documentation
  url: https://s2.dev/docs
- type: APIReference
  url: https://s2.dev/docs/api
- type: GettingStarted
  url: https://s2.dev/docs/quickstart
- type: Support
  url: mailto:hi@s2.dev
- type: Blog
  url: https://s2.dev/blog
- type: GitHubOrganization
  url: https://github.com/s2-streamstore
- type: Pricing
  url: https://s2.dev/pricing
- type: SignUp
  url: https://s2.dev/dashboard
- type: TermsOfService
  url: https://s2.dev/terms
- type: PrivacyPolicy
  url: https://s2.dev/privacy
- type: StatusPage
  url: https://status.s2.dev
- type: Packages
  url: packages/s2-dev-packages.yml
- type: SDKs
  url: packages/s2-dev-packages.yml
- type: CLI
  url: cli/s2-dev-cli.yml
- type: Sandbox
  url: sandbox/s2-dev-sandbox.yml
- type: ChangeLog
  url: changelog/s2-dev-changelog.yml
- type: Lifecycle
  url: lifecycle/s2-dev-lifecycle.yml
- type: RateLimits
  url: rate-limits/s2-dev-rate-limits.yml
- type: Conventions
  url: conventions/s2-dev-conventions.yml
- type: Idempotency
  url: conventions/s2-dev-conventions.yml
- type: ErrorCatalog
  url: errors/s2-dev-problem-types.yml
- type: DataModel
  url: data-model/s2-dev-data-model.yml
- type: Conformance
  url: conformance/s2-dev-conformance.yml
- type: WellKnown
  url: well-known/s2-dev-well-known.yml
- type: SecurityTxt
  url: well-known/s2-dev-security.txt
- type: APICatalog
  url: well-known/s2-dev-api-catalog.json
- type: LLMsTxt
  url: llms/s2-dev-llms.txt
- type: Overlay
  url: overlays/s2-dev-openapi-overlay.yaml
- type: MCPServer
  url: mcp/s2-dev-mcp.yml
- type: AgentSkill
  url: skills/_index.yml