AgentBeacon vs TheirStack for AI agents
TheirStack is a job postings data API (with company and technographic data) aimed at sales and market intelligence as well as job search. AgentBeacon is built on beacons, each a few plain words about what someone has or needs right now, live while they renew it. Each result is one, with the employer’s Apply link for a hiring beacon or an address to message a business’s through AgentBeacon. It needs no key.
The short answer
- TheirStack: Bulk, filterable job-posting data for market research and sales signals, with history back to 2021.
- AgentBeacon: Giving an agent a job to apply for or a home-service business to message, with no key.
AgentBeacon covers far less today: jobs in Austin, Texas, and remote, and businesses in and around Austin. Where it has what the agent is looking for, it is free and needs no sign-up.
TheirStack and AgentBeacon, side by side
| TheirStack | AgentBeacon | |
|---|---|---|
| Searches | Aggregated postings from career pages, job boards and ATS platforms across about 363k websites in 195 countries, since 2021. | Hiring beacons from employers’ own job boards (Austin, Texas, and remote) and home-service businesses around Austin |
| Returns | JSON jobs with title, description, url, final_url, source_url, company and company_object, location fields, min/max salary (plus annual USD) and salary_string. | Plain Markdown, one beacon per result: its own words, quoted, when it was updated, until when it’s open, and where it was seeded from. Typed JSON on request. |
| Before the first call | A TheirStack account and API key (Bearer token); each search must include at least one date or company filter. | One empty request to /v1/connect, which returns a token. No account, email or card. |
| Free | 200 API credits and 50 company credits every month, free (1 credit per job returned); free tier rate limit 4/second, 10/minute, 50/hour, 400/day. | Free: 600 finds a minute and 20,000 a day for each connected agent |
| Paid | From $49 per month for 1,500 API credits (1 credit per job). | Free for agents |
| Acting on a result | url, plus final_url with the original career-page URL when available (filterable with final_url_exists). | A hiring beacon has the employer’s Apply link; every other beacon is messaged through AgentBeacon, and the business replies there. A business that hasn’t taken over the beacon AgentBeacon seeded for it isn’t told, so a message to it waits 30 days. |
| Limits on keeping or showing results | Not stated on its pages | Agents read beacons and message them; the terms say reading one doesn’t give the right to reuse it freely. |
| AI in its terms | Not stated on its pages | Built for AI agents. An agent may act only with its owner’s permission, and the terms don’t let AgentBeacon train AI models on what businesses write. |
| Coverage | 195 countries. | Hiring in Austin, Texas, and remote; home services around Austin, for now |
| MCP server | Official TheirStack MCP server (search_jobs tool), OAuth or API key; uses the same API credits: https://theirstack.com/en/docs/mcp | https://api.agentbeacon.sh/mcp/search, with no sign-in |
Try AgentBeacon
Connect, then find:
curl https://api.agentbeacon.sh/v1/connect \
-H 'Content-Type: application/json' \
--data-binary '{}'
curl -G https://api.agentbeacon.sh/v1/beacons \
-H "Authorization: Bearer $AGENTBEACON_TOKEN" \
--data-urlencode "q=remote analytics engineer jobs over 130k"Or let the JavaScript client connect for you. The Python client, agentbeacon-sdk, works the same way.
npm install @agentbeacon/sdk
import { find } from "@agentbeacon/sdk";
console.log(await find("remote analytics engineer jobs over 130k"));Agent apps that take MCP servers can add https://api.agentbeacon.sh/mcp/search, which needs no sign-in. The jobs docs have the full code, every parameter and each line of the answer.
One result, as it read on October 15, 2026:
## Hiring: Analytics Engineer at Ontic. $135,000–$145,000 a …
> Hiring: Analytics Engineer at Ontic. $135,000–$145,000 a year. Full-time, remote. Apply: [website: open this beacon]
Expires Oct 17, 00:00 CDT · Updated yesterday
Location: anywhere
Verification (agentbeacon.sh): Seeded by AgentBeacon from Ontic’s job board, read again every day. Its employer isn’t on AgentBeacon yet: a message waits 30 days for it to join.
Link: https://agentbeacon.sh/beacon/369348e4-b3d0-490f-82b4-a666041243cfWhat AgentBeacon doesn’t do yet
- Jobs come from the job boards of a growing list of companies, in Austin and remote.
- Businesses are in Austin, Texas, for now.
- It shows no phone numbers or websites: a business is reached by messaging its beacon through AgentBeacon.
Questions people ask
What do I need before I can use AgentBeacon?
One empty request to /v1/connect, which returns a token. No account, email or card.
Is AgentBeacon free?
Free: 600 finds a minute and 20,000 a day for each connected agent.
What do I need before I can use TheirStack?
A TheirStack account and API key (Bearer token); each search must include at least one date or company filter.
Is TheirStack free?
200 API credits and 50 company credits every month, free (1 credit per job returned); free tier rate limit 4/second, 10/minute, 50/hour, 400/day.
Sources
Every line about another company comes from its own pages. Prices and terms change, so check the source before you rely on one.
TheirStack, read on October 15, 2026:
- theirstack.com/en/job-posting-api: “253M of jobs across 195 countries since 2021”
- theirstack.com/en/job-posting-api: “career pages, job boards, and ATS platforms”
- theirstack.com/en/docs/pricing/plans: “Start exploring with 50 company credits and 200 API credits every month - completely free, forever.”
- theirstack.com/en/docs/api-reference/rate-limit: “4/second, 10/minute, 50/hour, 400/day”
- theirstack.com/en/pricing: “1,500 API credits — $49 per month”
- theirstack.com/en/docs/api-reference/jobs/search_jobs_v1: “1 API credit for each job returned in the response”
- theirstack.com/en/job-posting-mcp: “Your AI assistant calls the search_jobs tool to find jobs by title, location, salary”