# TheirStack alternatives for AI agents

TheirStack alternatives for an AI agent: 4 of 6 TheirStack jobs covered, each priced per call. See which jobs move to an agent and which stay.

## Live prices

Prices read on 2026-10-13 from the live looot catalog. They change when a provider changes its price.

| What TheirStack does | Cheapest provider on looot | Price |
|---|---|---|
| Search job postings | Anysite | $0.000145 per search |
| Find the tech a company uses | Tomba | $0.0089 per lookup |
| Search companies by filters | The Companies API | $0.0019 per search |
| Read buying intent topics | TheirStack | $0.0327 per lookup |
| Instant alerts for new jobs | not on looot | no price |
| Bulk datasets | not on looot | no price |

## The honest answer

A job posting and technographics data provider that finds companies by the jobs they post and the tech they use. For an AI agent running looot, the verdict on TheirStack is kinda. 4 of the 6 jobs we compared are covered.

Covered: search job postings, find the tech a company uses, search companies by filters and read buying intent topics.

Not covered: instant alerts for new jobs and bulk datasets. For these, keep TheirStack or use another tool beside looot.

## Other tools in the same job

- Sumble (/can-i-replace/sumble): verdict kinda.
- Clearbit (/can-i-replace/clearbit): verdict yes.
- ZoomInfo (/can-i-replace/zoominfo): verdict kinda.
- Lead411 (/can-i-replace/lead411): verdict kinda.
- Datanyze (/can-i-replace/datanyze): verdict kinda.
- Apollo (/can-i-replace/apollo): verdict kinda.

## Or let your agent do the TheirStack jobs

- Search job postings: covered. Providers: theirstack, predictleads, anysite, harvestapi.
- Find the tech a company uses: covered. Providers: sumble, builtwith, tomba, predictleads, theirstack.
- Search companies by filters: covered. Providers: theirstack, prospeo, companyenrich, thecompaniesapi.
- Read buying intent topics: covered. Providers: theirstack.
- Instant alerts for new jobs: not covered. Needs scheduled runs, not available yet. looot runs when your agent calls it.
- Bulk datasets: not covered. looot returns results per call. It does not deliver a dataset file.

## Agent prompt to replace TheirStack

Use looot to find companies that posted jobs mentioning a technology I name, then list the technologies each one uses. If you have not yet, set up https://looot.ai/skill.md first. Then search the looot catalog for each step, check the price of each endpoint before you call it, run the cheapest one that fits, and show me the results as a table.

## TheirStack versus an agent running looot

- What it is: A job posting and technographics data provider that finds companies by the jobs they post and the tech they use. | Your own agent calling looot endpoints and writing the result where you ask.
- Jobs compared: 6 jobs | 4 covered
- Not covered: instant alerts for new jobs and bulk datasets | 2 jobs the agent cannot do through looot
- How you use it: The TheirStack app | A prompt to the agent you already use
- Pick TheirStack if: You need instant alerts for new jobs and bulk datasets, or you would rather click through its own app than prompt an agent. | You want an agent to run the job and pay per call, with no plan to manage.
- How you pay: See TheirStack for its own terms | Pay per call, with the price shown before each run
- Last reviewed: 2026-10-13 | Prices read live from the catalog

## What are the best TheirStack alternatives?

Tools in the same category include Sumble, Clearbit, ZoomInfo, Lead411, Datanyze and Apollo. We do not rank them as best. Pick by the jobs you need done, and compare the jobs listed on this page.

## Is there a TheirStack alternative for AI agents?

It depends on the job. An agent running looot gets a verdict of kinda for TheirStack: 4 of 6 jobs covered.

## Is there a free TheirStack alternative?

looot is not free. It is pay per call, and each endpoint shows its price before the run, so you can see what a TheirStack job costs before you start. We do not state what TheirStack costs.

## TheirStack vs looot, which fits an agent?

TheirStack is an app you open and use. looot is a catalog of endpoints your own agent calls. TheirStack vs looot comes down to whether you want an app or an agent doing the jobs, and whether the jobs you need are in the covered list.

## Which TheirStack jobs can an agent do with looot?

search job postings, find the tech a company uses, search companies by filters and read buying intent topics. Coverage is checked against the live catalog, so a job drops to not covered when no priced endpoint exists.

## Which TheirStack jobs can an agent not do?

instant alerts for new jobs and bulk datasets. Keep TheirStack for these, or use another tool beside looot.

## How do I replace TheirStack with an agent?

Set up looot from https://looot.ai/skill.md, then paste the prompt on this page into the agent you already use. Edit it to match your own inputs.

## How does looot price a TheirStack alternative?

looot charges per call. The jobs above show the cheapest live price for each, read from the catalog. When no priced endpoint exists the page says price on request.

## More

- /can-i-replace/theirstack
- Category: Sales and outreach
- /alternatives

## Agent skill for this page

https://looot.ai/alternatives/theirstack/skill.md sets an agent up for exactly the jobs on this page, with the live price of each, and offers the page's starter task once the user has picked a job and seen the price. The line to give an agent is under "Give this to your agent" below.

## For agents

### Give this to your agent

```text
set up looot for TheirStack jobs - https://looot.ai/alternatives/theirstack/skill.md
```