Buyer guide · last updated 2026-11-03
How AI app and automation projects get built
Short answer: Treat it like any software project with an extra safety layer. Scope the job and the human approvals first, pick a stack your team can maintain (often Claude or Cursor for build help, n8n/Make/Zapier for workflows, MCP for tool access), build the smallest path that works, test on real failures, then hand over with a runbook. For published agency prices from our directory: We list 960 agencies that fit this, each checked against its own website. Of the 97 that publish a project price, the median is $2,500 and the middle half sits between $1,000 and $6,997. Automation agencies sell fixed-price builds, monthly retainers, or hourly work.
1. Scope
Write one page that answers: what job is being automated, which systems are touched, what “done” looks like, and which actions a person must still approve (payments, external email, deletes, production changes). If you cannot name the success metric, you are not ready to buy a build.
- Inputs and outputs (example: “new HubSpot deal → qualified lead in Slack + CRM fields filled”).
- Data you will and will not send to a model.
- Owner after launch (who watches failures).
Use our free RFP / brief generator when you want a structured brief to send agencies.
2. Stack
Common pieces buyers and agencies name today:
- Claude / Cursor — coding and refactor help while humans own the repo.
- n8n, Make or Zapier — workflow glue between SaaS tools; see n8n agencies and hire n8n developers.
- MCP — a way for assistants to call tools over a standard connector; see Cofounderbase MCP for directory search.
- Voice / RAG platforms when the product is a phone agent or document assistant — voice platforms, RAG platforms.
Prefer the boring option your team can debug at 2am over a novel agent framework with no owner.
3. Build
Implement the happy path first. Keep API keys and customer data out of prompts. Put irreversible actions behind an approval step. Prefer idempotent workflows so retries do not double-charge or double-email.
4. Test
Test with real examples, not only demos: empty fields, duplicate events, permission errors, and “user said stop”. Log every tool call. If you cannot replay a failure, you do not own the system yet.
5. Handover
Ship a short runbook: how to pause the agent, who gets alerts, where secrets live, and how to roll back. Agree who pays model and workflow bills monthly.
Typical cost and timeline (directory data only)
How much does an AI automation agency cost?
We list 960 agencies that fit this, each checked against its own website. Of the 97 that publish a project price, the median is $2,500 and the middle half sits between $1,000 and $6,997. Automation agencies sell fixed-price builds, monthly retainers, or hourly work.
| Agencies in this list | 960 |
|---|---|
| Publish a starting price | 97 |
| Median published price | $2,500 |
| Typical range (25th–75th pct) | $1,000–$6,997 |
| Top countries | United States, United Kingdom, India, Australia, Canada |
n8n-focused builds
We list 363 agencies that fit this, each checked against its own website. Of the 41 that publish a project price, the median is $2,000 and the middle half sits between $800 and $5,000. n8n is an open-source workflow tool that can be self-hosted, popular for AI automations because it can call any API and LLM.
Custom AI apps
We list 284 agencies that fit this, each checked against its own website. Of the 33 that publish a project price, the median is $3,000 and the middle half sits between $999 and $8,000. Cost drivers: number of data sources, whether you need an agent that takes actions or only answers, accuracy requirements, and hosting (API models vs. self-hosted).
Prices are starting prices agencies publish on their own sites (directory rules). They are not quotes. Timelines depend on scope; we do not invent a universal week count.
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Questions
How much does an AI automation agency cost?
We list 960 agencies that fit this, each checked against its own website. Of the 97 that publish a project price, the median is $2,500 and the middle half sits between $1,000 and $6,997. Automation agencies sell fixed-price builds, monthly retainers, or hourly work.
How long does a build take?
Simple single-workflow automations are often scoped in days to a couple of weeks. Multi-system agents with approvals and evals usually take several weeks. Ask for a written scope with milestones; we do not invent a one-size timeline.
What stack do teams commonly use?
Common pieces named on agency sites and buyer guides: Claude or Cursor for coding assistance, n8n/Make/Zapier for workflows, and MCP connectors to tools. The right stack depends on your systems and who will maintain the build.
Where do I find agencies?
Browse Cofounderbase hiring guides and the AI automation / AI development hubs, or get matched free.
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