canonical: https://jentic.com/apis/theirstack.com/theirstack

# TheirStack API Reference

Introduction Welcome to TheirStack’s API! <br> You can use this API to access all our API endpoints, such as the [Jobs endpoint](https://api.theirstack.com) to get real-time and historical jobs from more than 100 countries or the [Companies endpoint](https://api.theirstack.com) to get a list of companies by the technology they use or by the roles they are hiring for. The API is organized around [R. The API exposes 25 endpoints secured with apiKey, bearer, oauth2 authentication.

## For AI agents

Programmatically create list, get lists. Covers 25 operations with apiKey, bearer, oauth2 authentication.

## Scope

Does not handle payments, communications, or crm - use for identity and authentication only.

## Capabilities

- Create List
- Get Lists
- Rename List
- Delete List
- Add Companies To List

## Use cases

### Identity and Authentication Operations

Use the TheirStack API Reference to perform identity auth operations programmatically. The API provides 25 endpoints covering core functionality including create list, get lists, get list.

Example prompt: Call POST `/v0/company_lists` to create list

### Automated Company Lists Management

Automate company lists operations by combining multiple TheirStack API Reference endpoints. Agents can get lists and then get list in a single workflow.

Example prompt: Call GET `/v0/company_lists` to get lists, then verify the result

### AI Agent Integration via Jentic

AI agents discover and call TheirStack API Reference endpoints through Jentic without managing credentials directly. An agent searches for the required operation by intent, receives the matching endpoint schema, and executes the call with Jentic-managed authentication. This eliminates the need to read API documentation or handle apiKey, bearer, oauth2 tokens manually.

Example prompt: Search Jentic for 'create list', load the operation schema, and execute with Jentic-managed credentials

## Key endpoints

| Method | Path | Description |
| --- | --- | --- |
| POST | `/v0/company_lists` | Create List |
| GET | `/v0/company_lists` | Get Lists |
| GET | `/v0/company_lists/{list_id}` | Get List |
| PATCH | `/v0/company_lists/{list_id}` | Rename List |
| DELETE | `/v0/company_lists/{list_id}` | Delete List |
| GET | `/v0/company_lists/{list_id}/companies` | Get List Companies |
| POST | `/v0/company_lists/{list_id}/add_companies` | Add Companies To List |
| POST | `/v0/company_lists/{list_id}/remove_companies` | Remove Companies From List |

## Key resources

- **Company Lists** — Operations related to Company Lists
- **Saved Searches** — Operations related to Saved Searches
- **Catalog** — Operations related to Catalog
- **Companies** — Operations with companies
- **Jobs** — Operations with jobs

## AI readiness

This API is usable in Jentic One now. Its AI-readiness score against Jentic's framework shows where it stands today and where improvements would make it even easier for agents to use.

- **Score:** 50 / 100
- **Maturity:** Foundational
- **Dimensions:**
  - Foundational Compliance: 58 / 100
  - Developer Experience & Jentic Compatibility: 59 / 100
  - AI-Readiness & Agent Experience: 30 / 100
  - Agent Usability: 94 / 100
  - Security: 39 / 100
  - AI Discoverability: 100 / 100
- **View full report:** https://jentic.com/apis/theirstack.com/theirstack/scorecard
- **How the score is calculated:** https://docs.jentic.com/reference/api-readiness-framework/overview/
- **More about the dimensions:** https://docs.jentic.com/reference/api-readiness-framework/specification/#dimensional-model-overview

### Score it yourself

Every API in the directory is allowlisted, so you can re-score it with no key required.

- **Score your own API:** https://jentic.com/scorecard.md
- **Scoring CLI agent skill:** https://github.com/jentic/jentic-api-scorecard/blob/main/skills/jentic-api-scorecard/SKILL.md

```sh
npx @jentic/api-scorecard-cli score <openapi-url>
```

## Why Jentic

- **Setup:** Wiring TheirStack by hand means picking among its token, bearer, and OAuth2 schemes against api.theirstack.com and handling the company-list endpoints yourself. Through Jentic you install once, import TheirStack from the API Directory, store the credential once, and your agent calls it.
- **Permission scoping:** TheirStack puts the list id in the URL path (`/v0/company_lists/{list_id}`), so a rule can pin your agent to one company list. You choose the operations it may call, so destructive ones like deleting a list or removing companies are not included unless you add them.
- **Credential handling:** Your TheirStack credential is stored once, encrypted, by your own Jentic One instance and injected at execution time. It never enters the agent's prompt, logs, or context.
- **Discovery method:** Agents search Jentic by intent such as 'create a company list' or 'add companies to a list', and Jentic returns the matching TheirStack operation with its input schema so the agent calls the right endpoint without browsing the reference docs.

## Related APIs

- **Auth0** — Alternative identity auth API
- **Okta** — Alternative identity auth API

## FAQ

### What authentication does the TheirStack API Reference use?

The TheirStack API Reference uses apiKey, bearer, oauth2 authentication. Through Jentic, these credentials are stored encrypted in your Jentic One instance and injected at execution time, so raw secrets never enter the agent context.

### Can I create list with the TheirStack API Reference?

Yes. Use the POST `/v0/company_lists` endpoint. The API returns structured JSON responses that agents can parse and act on directly.

### What are the rate limits for the TheirStack API Reference?

Rate limits are not specified in the OpenAPI spec. Check the vendor documentation for current limits. Through Jentic, rate limiting is handled automatically with retry logic built into the execution layer.

### How do I create list through Jentic?

Install the Jentic SDK with pip install jentic, authenticate through Jentic One, the self-hosted execution layer, then search for 'create list'. Jentic returns the matching TheirStack API Reference operation with its input schema. Load the schema and execute the call - credentials are injected automatically.

### How many endpoints does the TheirStack API Reference have?

The TheirStack API Reference exposes 25 endpoints covering company lists, saved searches, catalog operations.

### Can I limit what my agent is allowed to do with the TheirStack API?

Yes. Because Jentic One is self-hosted, you set the rules, and you decide which TheirStack operations your agent may call, so read operations like GET `/v0/company_lists` can be allowed while destructive ones such as deleting a list or removing companies are left out unless you add them. TheirStack puts the list id in the URL path (`/v0/company_lists/{list_id}`), so you can pin the agent to a single company list. Your stored credential is injected only when a permitted operation runs, keeping every call inside the boundary you define.