# API for internal tools

CTD's full dataset is available via REST API — not just for CRM sync, but for any internal tool your team builds or uses. If your org has a data warehouse, internal dashboard, or custom scoring model, you can pipe relationship intelligence directly into it.

## What's available via API

The API exposes everything CTD knows about your network:

- **Paths** — warm paths to any company or person reachable through your org, with relationship scores, connector details, and path stage.
- **Reachable people and companies** — list everyone your network can reach, globally or filtered by criteria.
- **Target accounts** — push your account list into CTD and pull back enriched data including scores, paths, and field values.
- **Job changes** — signals when contacts in your network change roles.
- **Ghost email activity** — asks sent, approvals, and replies.

## API access on Business Edition

Business Edition includes API access as part of the package — no separate API fees. Once you're on Business Edition, you can build enrichment workflows, trigger lookups, and query paths without worrying about additional costs.

Authentication uses `ctd-api-key` and `ctd-client-id` headers. Full reference at [app.ctd.ai/account/api-access/documentation](https://app.ctd.ai/account/api-access/documentation).

**CTD exposes everything via API** — relationship graph, warm paths, reachability, job changes, ghost email activity, target accounts, and more. If you're building a data warehouse sync, internal dashboard, or CRM enrichment pipeline, the full reference is in the [CTD API](/content/guide/category/api/index.html) guide. Start with [Building your relationship intelligence stack](/content/guide/article/api-internal-tools/index.html) for integration patterns, then go to the [Workspace API](/content/guide/article/api-workspace/index.html) for the full endpoint reference.

Have a question or running into an issue? Email us at [support@ctd.ai](mailto:support@ctd.ai) — we're happy to help.