AI Tool Atlas

Productivity & writingDocumented overviewLast checked Oct 1, 2026

kubbi: Pricing, Features & Best Use Cases

Claim-check API for agent handoffs: store a payload encrypted with a TTL and pass only a claim URL through queues, webhooks or MCP.

kubbi homepage screenshot, productivity & writing AI tool

Our take: kubbi suits developers building multi-agent systems who want payloads kept out of queues and logs by passing only an expiring, encrypted claim URL.

Main limitation: Free tier: 20 kubbis/day, 5 active, 2-hour max TTL

By the AI Tool Atlas editors. Based on the vendor's official documentation; we have not tested this product hands-on. What “documented overview” means

Who kubbi fits

kubbi suits developers building multi-agent systems who want payloads kept out of queues and logs by passing only an expiring, encrypted claim URL. Based on the vendor's documentation, not on a hands-on test.

Best for: Agent developers

Also a good fit for

  • Teams building multi-agent pipelines

Consider another tool if free tier: 20 kubbis/day, 5 active, 2-hour max TTL

Or if

  • Free payload limit 16 KB, 3 files per kubbi
  • Free rate limit 20 requests/min

kubbi pricing and usage limits

Prices checked Oct 1, 2026 on the official US pricing page. Official pricing ↗ Prices and limits change often.

kubbi pricing page with plans and prices — screenshot of the productivity & writing AI tool, Oct 1, 2026
The official kubbi pricing page as we saw it. kubbi.ai, captured Oct 1, 2026

Free access and trial conditions

Free tier, no credit card

Paid plans: what changes as you upgrade

Free web

Free source (opens in a new tab)

Monthly

For: Individuals getting started

Limits

  • 20 kubbis per day, 5 active
  • 16 KB payload, 3 files, 2-hour max TTL
1 more
  • 20 requests per minute

Includes

  • 2 API keys
  • 5 retrievals per kubbi
1 more
  • Community support

Pro web

$19 source (opens in a new tab)

Monthly

For: Professionals and teams

Limits

  • 100 kubbis per day, 50 active
  • 64 KB payload, 5 files, 2-day max TTL
1 more
  • 100 requests per minute

Includes

  • 5 API keys
  • 25 retrievals per kubbi
1 more
  • Priority support

Enterprise web

Custom pricing source (opens in a new tab)

Custom

For: Organisations with custom requirements

Limits

  • 500 kubbis per day, 250 active
  • 256 KB payload, 10 files, 7-day max TTL
1 more
  • 500 requests per minute

Includes

  • 25 API keys
  • 100 retrievals per kubbi
1 more
  • Custom SLAs and dedicated support

Usage caps, credits and extra costs

Over-quota requests return 429 until the rolling 24-hour window clears

Not stated

What is kubbi, and how does it work?

kubbi is a developer service that holds payloads for agent-to-agent handoffs so queues, webhooks, MCP tool results or A2A messages carry only a claim URL. Payloads are encrypted at rest (AES-256-GCM), expire by TTL and can be burn-after-read. It provides an API with TypeScript and Python SDKs and a manifest preview so consumers can inspect files before claiming. A free tier needs no credit card.

kubbi homepage — screenshot of the productivity & writing AI tool, Oct 1, 2026
kubbi's official site: how the product presents itself. kubbi.ai, captured Oct 1, 2026

What you provide and what you get back

How kubbi works: what you provide, where it runs and what you get backYOU PROVIDEYour inputPayload or files (16 KB free, 3 f…TTL and max retrievalsAPI key from the producerPRODUCTIVITY & WRITINGkubbiAPIfrom $19 (Pro)free tier availableaccount requiredchecked Oct 1, 2026YOU GET BACKThe resultClaim URLManifest preview for consumersBurn-after-read retrievalinput → kubbi → output · from the vendor's own pages, no hands-on test unless stated
What you give kubbi and what comes back, from its documentation

You provide

  • Payload or files (16 KB free, 3 files)
  • TTL and max retrievals
  • API key from the producer

You get back

  • Claim URL
  • Manifest preview for consumers
  • Burn-after-read retrieval

Where you can use it

Platforms
API
Account
Required
Encryption
AES-256-GCM at rest source (opens in a new tab)
Max TTL
2 h / 2 days / 7 days source (opens in a new tab)
Payload size
16 KB / 64 KB / 256 KB source (opens in a new tab)
SDKs
TypeScript, Python source (opens in a new tab)
MCP tools
kubbi_send, send_files, claim, inspect, get, delete source (opens in a new tab)

Where kubbi is most useful

Scenarios are worked out by our editors from the documentation; the actual result depends on your input and plan.

Passing large payloads between agents

Who
Agent developers
You provide
Payload over a queue message size
Expected result
Claim URL sent instead of the payload
Plan needed
Free or Pro
Limitation
Free payload cap is 16 KB source (opens in a new tab)

Keeping sensitive data out of logs

Who
Security-minded teams
You provide
Secret or customer data
Expected result
Only the claim URL appears in logs
Plan needed
Pro
Limitation
Payload expires with TTL source (opens in a new tab)

Multi-file package handoff

Who
Agent pipeline builders
You provide
Up to 3 files (free) per kubbi
Expected result
Consumer inspects manifest then claims
Plan needed
Pro for 5 files
Limitation
Package size 1 MB on Free source (opens in a new tab)

Key features and their practical limits

kubbi homepage — screenshot of the productivity & writing AI tool, Oct 1, 2026
Feature overview on the official site. kubbi.ai, captured Oct 1, 2026

Burn-after-read retrieval limits

Limits how many times a kubbi can be claimed, server-enforced Prevents reuse of secrets

Access: All plans (5 / 25 / 100 retrievals)Limit: Cap depends on plan source (opens in a new tab)

Short TTL expiry

Expires payloads after a set time Minimizes exposure

Access: Max 2 hours Free, 2 days Pro, 7 days EnterpriseLimit: Cannot hold data longer source (opens in a new tab)

AES-256-GCM encryption at rest

Encrypts stored payloads and overwrites ciphertext when finished Reduces breach impact

Access: All plansLimit: Server-side, not end-to-end claim made source (opens in a new tab)

Manifest preview

Lets consumers inspect files before claiming Avoid burning a retrieval blindly

Access: All plansLimit: Preview shows manifest only source (opens in a new tab)

kubbi pros and cons

Reasons to choose kubbi

Check before paying for kubbi

How to use kubbi for handing a payload between two agents with a claim URL

Set up kubbi

  1. Get a free API key at kubbi.ai (no credit card)
  2. Install the TypeScript or Python SDK, or add the MCP config
  3. Choose TTL and max retrievals for the handoff

Example: handing a payload between two agents with a claim URL

  1. Producer sends the payload with kubbi_send
  2. Pass the returned claim URL through your queue or webhook
  3. Consumer inspects the manifest with kubbi_inspect
  4. Consumer claims it with kubbi_claim

Review and export the result

  1. Retrieve again after max retrievals and confirm it is burned
  2. Check the kubbi expires after its TTL

kubbi API

kubbi pricing page with plans and prices — screenshot of the productivity & writing AI tool, Oct 1, 2026
Plan comparison on the official pricing page. kubbi.ai, captured Oct 1, 2026

API access and separate billing

kubbi has no public API in its official documentation. TypeScript and Python SDKs API documentation ↗

Privacy, data use and commercial rights

Summarized from the vendor's current policies; this is not legal advice and a vendor's badge is not an independent audit.

How your inputs and outputs are handled

Payloads encrypted at rest with AES-256-GCM

Rows wiped on expiry, burn or deletion; ciphertext overwritten

Controls for business users

  • Server-enforced retrieval limits

Policies: kubbi.ai/privacy

Best kubbi alternatives for different needs

"Better suited" is based on documented features and pricing, not on a head-to-head test.

Zapier: better suited to

Make: better suited to

n8n: better suited to

Alternatives
AlternativeWhen to choose itPricingLimitation
Zapier——Compare
Make——Compare
n8n——Compare

Explore kubbi further

kubbi pricing, plan by planEvery plan with USD prices, limits and what is free.Best kubbi alternativesTools for the same job, by need and starting price.Best AI writing and productivity toolsOur picks in this category, compared by price and free tiers.

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    kubbi FAQ

    Is kubbi free?

    Yes: 20 kubbis per day, 5 active, 16 KB payloads, 3 files and a 2-hour max TTL, no credit card. source (opens in a new tab)

    What does Pro cost?

    $19 per month, with 100 kubbis per day, 64 KB payloads, 2-day TTL and 100 requests per minute. source (opens in a new tab)

    What happens when I exceed the quota?

    Requests return a 429 response until the rolling 24-hour window clears or you upgrade. source (opens in a new tab)

    How is data protected?

    Payloads are encrypted at rest (AES-256-GCM) and wiped when expired, burned or deleted. source (opens in a new tab)

    Which SDKs exist?

    TypeScript and Python, plus MCP tools. source (opens in a new tab)

    Sources and review methodology

    Official sources and verification dates

    Not verified: Hosting regions; Enterprise price; Exact retention in backups.

    How we documented and maintain this page

    Every fact about kubbi above comes from the 4 official pages listed here, last compared on Oct 1, 2026; we have not run kubbi ourselves, so it has no editorial score. How we check and re-check pages.

    Article updated Oct 2, 2026; prices checked Oct 1, 2026. Outbound links to vendors are plain links; we do not earn commissions. How we review · Report an error