Bring your own people-data provider

SignalsAPI finds companies that are hiring. To turn those companies into people you can contact — the right person, their email, sometimes their mobile — connect a people-data provider using your own API key.

• No key → your account is on the free tier: company signals only, no people data.
• With a key → decision-maker search returns people, and verified emails from every provider that has an email product — see the table below for the one that doesn’t.
• People lookups cost no SignalsAPI credits — you only pay your provider for what you use.
• Some signup links below pay us a referral fee — see How we make money.

You manage everything on one screen: Settings → Provider.

Choose your provider

Open the Provider dropdown and pick the provider you already have an account with. Each option says what it returns — people search, for most + email, and for some + mobile. You connect one provider at a time. To see how the providers differ on data and filtering, see Compare people-data providers.

Provider	What you get	Paste	Get your key
Anymail Finder	people + email	API key	Anymail Finder
Icypeas	people + email	API key	Icypeas
People Data Labs	people + email	API key	People Data Labs
Prospeo	people + email	API key	Prospeo
Snov.io	people + email	Client ID + Client Secret	Snov.io
Hunter	people + email	API key	Hunter
LeadMagic	people + email + mobile	API key	LeadMagic — see Find phone numbers
Tomba	people + email	Key + Secret	Tomba
Limadata	people + email + mobile	API key	Limadata — see Find phone numbers
HarvestAPI	people only — no email	API key	HarvestAPI
Wiza	people + email + mobile	API key	Wiza — see Find phone numbers

Enter your key

The form shows exactly the fields your provider needs. Most use a single API key; a few use two secrets — for example Snov.io asks for a Client ID and a Client Secret (found at app.snov.io/account/api), which appear as soon as you select it.

Paste your value(s) and click Save & validate. SignalsAPI checks the key with the provider straight away — it doesn’t just store whatever you typed.

Confirming it works

If the key is accepted you get a green confirmation and an active status. Only a masked fingerprint of your key (the last 4 characters) is ever shown.

If the provider rejects it, the status is invalid and no people data is fetched until you fix it.

If you see invalid, check that you:

1. Copied the full key with no extra spaces.
2. Selected the right provider.
3. Filled both fields for two-secret providers (Snov.io, Tomba).
4. Haven’t revoked or rotated the key — regenerate it if unsure.

A key that was active can later turn invalid if the provider revokes it. If people data suddenly stops appearing, check this page.

Removing or switching

Click Remove key to delete your credentials — your account returns to the free tier. To switch providers, just select another provider and save a new key; it replaces the previous one.

How lookups are staged

When SignalsAPI builds your leads it uses your provider in a cost-staged order, so you don’t pay for people you’ll never contact:

1. People search at the hiring company.
2. AI qualification ranks and cuts the list.
3. Email lookup runs only for the survivors — and only verified emails are kept. Providers with no email product are skipped here, and a project with “Email is required” on won’t spend anything against one.
4. Phone lookup runs last, only for surviving leads, when Find phone numbers is enabled and your provider supports it (currently LeadMagic, Limadata, Wiza only).

Your key is safe

Credentials are encrypted at rest, never displayed back (only the masked fingerprint), and used solely to call your provider on your behalf — never logged or shared.

Recent changes

• 2026-07-31 — Limadata joins the bring-your-own people-data providers — title, country, city and skills all filtered at source, LinkedIn profile and headline returned, and mobile phone numbers alongside LeadMagic. One API key.

• 2026-07-29 — HarvestAPI joins the bring-your-own people-data providers — LinkedIn lead search with title and country filtered at source. It has no email product, so it returns people and job titles only, and a project with “Email is required” on will not spend against it.

• 2026-07-29 — Wiza joins the bring-your-own people-data providers — title, country, city and skills all filtered at source, plus mobile phone numbers. Email and phone are reveals that bill only on a hit, spent against one-off API credits rather than a seat plan. One API key.

• 2024-05-30 — Auto-validating emails in Snov.io (exports -> add -> snovio -> validate emails)

• 2024-05-04 — Email unlocking speed increased

• 2024-05-02 — Fixed: unlocking emails gets stuck if email is missing

• 2024-05-02 — Auto-unlocking all emails if auto-approve is enabled

• 2024-05-01 — Fixed: email unlocking

• 2024-04-30 — Fixed: it is now possible to reject a lead that does not have unlocked emails

• 2024-04-25 — “Unlock email” link works much faster

• 2024-02-11 — Snov.io integration