Connect the systems you already pay for.
Postgres, Paylane, Dealforge, Ledgerline, S3 and 140 more. Changes arrive as typed events within 400 ms, with the schema checked on the way in.
146 connectorsCDCWebhooks
Tessel 4.0 · Agents with approvals
Build your operations block by block.
Tessel turns workflows, data and AI agents into blocks your team can stack, test and ship. Every block is versioned. Every run is traced.
01 Clients
In production at 1,900 teams
Halden northwind Kestrel/Bank Lumen Freight Oru parcel&co Vela Health Atlas Mutual
02 Stack
The stack
Four layers. One foundation your whole company builds on.
Join, branch and transform without glue code.
Logic blocks compile to plain TypeScript you can read. Every change is a diff that someone reviews before it reaches production.
TypeScript outGit syncUnit tests
Hand judgment calls to agents with limits.
Each agent gets a budget, a list of tools and a named approver. It cannot exceed any of the three, and every decision it makes is logged with its reasoning.
Spend capsTool scopesAudit log
Ship results where people already work.
Send to Chatline, email or an API endpoint, or generate an internal app from the same blocks. Permissions follow the data all the way through.
ChatlineREST + webhooksInternal apps
03 Blocks
Blocks
Built for the day something breaks.
Automation is easy to start and hard to trust. These are the parts that make Tessel safe to run your month-end close on.
Versioned by default
Every block keeps its history. Diff two versions, see who approved each one and roll back in a click.
Every run, traced
Follow one invoice through 14 blocks and see the input, output and latency of each step.
Agents in a cage
Agents run inside the limits you set for spend, tools and data. Anything outside those limits stops and asks a person.
Approvals in Chatline
Route sensitive steps to a person. They approve from Chatline or email and the run picks up where it paused.
Replay before you publish
Run a draft against last week's real events and compare its output with production before anything goes live.
Your data stays put
Pin a workspace to the EU, US or APAC. Runs execute in that region and data never leaves it.
04 Why blocks
Why blocks
Most automation tools hand you a blank canvas and wish you luck. Tessel hands you a foundation. Every block is typed, tested and traced before it touches production, so the thing you built in March still works in December.
05 Metrics
Load-bearing
Two billion runs a month. Still boring, on purpose.
2.1BRuns in September
99.99%Uptime, trailing 12 months
184 msp95 latency per block
06 Blueprints
Blueprints
Start from a blueprint. Ship it by Friday.
07 Customers
Halden · Case study
“We replaced 31 cron jobs and two automation accounts with one Tessel workspace. Month-end close went from six days to two, and nobody misses the spreadsheets.”
6 → 2Days to close the books
31Cron jobs retired
0Missed approvals since launch
08 Pricing
Pricing
Pay per builder. Runs are on us up to a point.
Starter
$0forever
For one team proving the first workflow.
Start free- Up to 3 builders
- 10,000 runs a month
- All 146 connectors
- 7-day traces
TeamMost teams
$39per builder / month
For companies running real money through it.
Start 14-day trial
- Unlimited builders and blocks
- 500,000 runs a month
- Agents with approvals
- 30-day traces and replay
Enterprise
Custom
For regulated teams with auditors to answer to.
Talk to sales- SSO, SCIM and audit export
- Region pinning and residency
- 1-year traces
- 99.99% SLA, named engineer
09 FAQ
Questions
Asked before you build.
What counts as a run?
One trigger firing one workflow from start to finish is one run, however many blocks it passes through. Retries of a failed block are free.
Can I export what I build?
Yes. Logic blocks compile to TypeScript and sync to your Git repository. If you leave Tessel, the code stays readable and runnable.
Which models do agents use?
You choose per agent. Tessel supports the major hosted models and your own endpoints, and your data is never used for training.
How do approvals work when someone is away?
Each approval step names a primary and a backup. After the timeout you set, the request moves to the backup and the run waits safely until someone answers.
Is Tessel SOC 2 and GDPR compliant?
Tessel holds SOC 2 Type II and ISO 27001, signs DPAs on every plan and offers EU-only processing from the Frankfurt and Dublin regions.
10 Build
Your turn
Place your first block.
Click any tile to stack a block on it. Then build the real thing, free for up to three builders, no card required.
