QStash

QStash is a serverless message queue and task scheduling REST API from Upstash that delivers HTTP messages to endpoints reliably without requiring any long-lived connections or infrastructure management. Built entirely on stateless HTTP requests, it is designed for serverless and edge runtimes where traditional message brokers are impractical. QStash supports automatic retries, CRON-based scheduling up to one year in advance, URL group broadcasting for fan-out delivery, FIFO queuing, dead-letter queues, and message deduplication. Developers simply POST a message with a destination URL and QStash handles guaranteed delivery with configurable retry logic and flow control.

QStash publishes 7 APIs on the APIs.io network, including Dead Letter Queue API, Flow Control API, Logs API, and 4 more. Tagged areas include Message Queue, Task Scheduling, Serverless, HTTP Messaging, and Background Jobs.

The QStash catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

QStash’s developer surface includes authentication, documentation, engineering blog, pricing, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub

47.9/100 developing ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreemiumSelf serve⚡ Free to try

7 APIs

Message QueueTask SchedulingServerlessHTTP MessagingBackground Jobs Webhook Dead Letter Queue CronUpstash

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 47.9/100 · developing

Contract Quality 15.9 / 25

Developer Ergonomics 4.8 / 20

Access Clarity 10.0 / 20

Operational Transparency 6.8 / 13

Contract Governance 3.0 / 12

Discoverability 7.4 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 7

Rate-Limit Signaling 7 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/qstash: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 7

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

Rate Limits 1

Documented rate limits and quota policies.

Qstash Rate Limits

10 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

QStash Message

17 properties

JSON SCHEMA

QStash Schedule

8 properties

JSON SCHEMA

Examples 3

Example request and response payloads for these APIs.

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary

Vocabulary

JSONLDContext

JSONLDContext

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: qstash
name: QStash
description: QStash is a serverless message queue and task scheduling REST API from Upstash that delivers HTTP messages to
  endpoints reliably without requiring any long-lived connections or infrastructure management. Built entirely on stateless
  HTTP requests, it is designed for serverless and edge runtimes where traditional message brokers are impractical. QStash
  supports automatic retries, CRON-based scheduling up to one year in advance, URL group broadcasting for fan-out delivery,
  FIFO queuing, dead-letter queues, and message deduplication. Developers simply POST a message with a destination URL and
  QStash handles guaranteed delivery with configurable retry logic and flow control.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/qstash.png
url: https://raw.githubusercontent.com/api-evangelist/qstash/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.23'
tags:
- Message Queue
- Task Scheduling
- Serverless
- HTTP Messaging
- Background Jobs
- Webhook
- Dead Letter Queue
- Cron
- Upstash
tags_raw:
- Message Queue
- Task Scheduling
- Serverless
- HTTP Messaging
- Background Jobs
- Webhooks
- Dead Letter Queue
- CRON
- Upstash
apis:
- aid: qstash:qstash-dead-letter-queue-api
  name: QStash Dead Letter Queue API
  description: Manage dead letter queue messages
  humanURL: https://upstash.com/docs/qstash/overall/getstarted
  baseURL: https://qstash.upstash.io/v2
  tags:
  - Dead Letter Queue
  properties:
  - type: OpenAPI
    url: openapi/qstash-dead-letter-queue-api-openapi.yml
  - type: Documentation
    url: https://upstash.com/docs/qstash/overall/getstarted
- aid: qstash:qstash-flow-control-api
  name: QStash Flow Control API
  description: Manage flow control keys for rate and parallelism limiting
  humanURL: https://upstash.com/docs/qstash/overall/getstarted
  baseURL: https://qstash.upstash.io/v2
  tags:
  - Flow Control
  properties:
  - type: OpenAPI
    url: openapi/qstash-flow-control-api-openapi.yml
  - type: Documentation
    url: https://upstash.com/docs/qstash/overall/getstarted
- aid: qstash:qstash-logs-api
  name: QStash Logs API
  description: Retrieve message delivery logs
  humanURL: https://upstash.com/docs/qstash/overall/getstarted
  baseURL: https://qstash.upstash.io/v2
  tags:
  - Logs
  properties:
  - type: OpenAPI
    url: openapi/qstash-logs-api-openapi.yml
  - type: Documentation
    url: https://upstash.com/docs/qstash/overall/getstarted
- aid: qstash:qstash-messages-api
  name: QStash Messages API
  description: Publish and manage messages
  humanURL: https://upstash.com/docs/qstash/overall/getstarted
  baseURL: https://qstash.upstash.io/v2
  tags:
  - Message
  tags_raw:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/qstash-messages-api-openapi.yml
  - type: Documentation
    url: https://upstash.com/docs/qstash/overall/getstarted
- aid: qstash:qstash-queues-api
  name: QStash Queues API
  description: Manage FIFO queues
  humanURL: https://upstash.com/docs/qstash/overall/getstarted
  baseURL: https://qstash.upstash.io/v2
  tags:
  - Queues
  properties:
  - type: OpenAPI
    url: openapi/qstash-queues-api-openapi.yml
  - type: Documentation
    url: https://upstash.com/docs/qstash/overall/getstarted
- aid: qstash:qstash-schedules-api
  name: QStash Schedules API
  description: Create and manage CRON-based scheduled messages
  humanURL: https://upstash.com/docs/qstash/overall/getstarted
  baseURL: https://qstash.upstash.io/v2
  tags:
  - Schedules
  properties:
  - type: OpenAPI
    url: openapi/qstash-schedules-api-openapi.yml
  - type: Documentation
    url: https://upstash.com/docs/qstash/overall/getstarted
- aid: qstash:qstash-url-groups-api
  name: QStash URL Groups API
  description: Manage URL groups for fan-out delivery
  humanURL: https://upstash.com/docs/qstash/overall/getstarted
  baseURL: https://qstash.upstash.io/v2
  tags:
  - URL Groups
  properties:
  - type: OpenAPI
    url: openapi/qstash-url-groups-api-openapi.yml
  - type: Documentation
    url: https://upstash.com/docs/qstash/overall/getstarted
common:
- type: AgenticAccess
  url: agentic-access/qstash-agentic-access.yml
- type: DomainSecurity
  url: security/qstash-domain-security.yml
- type: Authentication
  url: authentication/qstash-authentication.yml
- type: Website
  url: https://upstash.com/qstash
- type: Documentation
  url: https://upstash.com/docs/qstash/overall/getstarted
- type: GitHubOrg
  url: https://github.com/upstash
- type: LinkedIn
  url: https://www.linkedin.com/company/upstash
- type: Blog
  url: https://upstash.com/blog
- type: Pricing
  url: https://upstash.com/pricing/qstash
- type: StatusPage
  url: https://status.upstash.com/
- type: X
  url: https://x.com/upstash
- type: Plans
  url: plans/qstash-plans-pricing.yml
- type: RateLimits
  url: rate-limits/qstash-rate-limits.yml
- type: FinOps
  url: finops/qstash-finops.yml
- type: Vocabulary
  url: vocabulary/qstash-vocabulary.yml
- type: JSONLDContext
  url: json-ld/qstash-context.jsonld
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
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.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/qstash"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/qstash/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/qstash/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.