Runtime (P26) is part ofY CombinatorLearn more
For Marketing & Growth

Your Growth Engineer in Slack, on demand.

Give your growth team the GTM Engineer they have been trying to hire, ready in Slack to ship landing pages, internal tools, and campaign automations.

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Works with your favorite coding agents

Claude CodeClaude CodeCodexCodexGemini CLIGemini CLI
#growth-engineering· 18 members
Channel
MN
Maya NilssonGrowth Eng9:14 AM

Need a launch page for v2.0 with the new hero copy and a CTA to the demo form. Branded, mobile-first, live by Thursday.

Sound familiar?

Every test sits in the engineering queue

Landing pages, ad variants, and attribution fixes all need code, and marketing keeps losing the sprint to platform work.

The data is locked away

A clean report across HubSpot, Segment, and GA4 means waiting on analytics or pasting CSVs into a spreadsheet.

The agents you tried left no audit trail

Vibe-coded tools shipped without review leave no record of who built what, what it cost, or what it touched.

What Runtime gives marketing and growth teams

A Growth Engineer that lives in Slack

Mention the agent in any growth channel and it replies in the same thread with a preview link or a pull request.

Build internal apps on demand

Ask for a campaign dashboard, a lead enrichment script, or an attribution backfill, and the agent ships it as an internal app.

Ship landing pages and content

Spin up a campaign page, launch microsite, or blog post inside your marketing repo, then open a pull request when it is ready.

Connect HubSpot, Segment, and GA4

Wire the agent into your CRM, event pipeline, and analytics, then ask plain questions about a campaign and get the answer with the SQL.

Activity dashboard with cost tracking

See every prompt, change, and dollar across the growth team in one view, with spend limits per teammate so nobody surprises finance.

Safe sandboxes with pull request review

Every change starts in an isolated sandbox and ends as a pull request that engineering can review before it ships.

Connects to your growth stack.

HubSpot logoHubSpot
Segment logoSegment
GA4 logoGA4
Slack logoSlack
Vercel logoVercel
Notion logoNotion

Slack to landing page.

01

Slack message to the agent. @runtime spin up a landing page for our Q3 webinar with a HubSpot registration form.

02

Agent builds in a sandbox. Agent forks the marketing site, builds the page, and posts a preview URL back in the thread.

03

Growth iterates over Slack. Marketing asks for a new hero image and a CTA above the fold, and each tweak renders in seconds.

04

Pull request opens for review. Agent opens a pull request for engineering to review before the page goes live.

Frequently asked questions

Does the marketing team need to know how to code?
No. You prompt the agent in Slack or in the Runtime app, and the live preview shows you exactly what it built before anything ships to the site.
How do we keep marketing from pushing broken code to the site?
The agent works in an isolated sandbox and opens a pull request when the work is ready. Your existing review process still has the final word on every merge.
Can the agent talk to HubSpot, Segment, and GA4?
Yes. Connect the integrations once, and the agent can query the data, write campaign automations, or wire up new tracking against the same systems your stack already uses.
How do I track cost and usage across the team?
Mission Control shows every prompt, every model call, and every dollar by teammate. You can set per-person budgets and hard caps before usage runs ahead of the plan.
Will this replace our analytics or CMS?
No. It sits alongside your existing tools and removes the small engineering tasks that used to block them, so your marketing site and your data stack stay in place.
How does this compare to a no-code builder?
Runtime works in your real codebase, follows your real review process, and stays consistent with the rest of your stack. No-code builders leave you with a separate system you eventually have to migrate away from.

Give growth its own coding agent

Drop the agent into Slack, point it at your marketing repo, and ship the next experiment today. No credit card required.

Start Building Free
Talk to the team