SignalHire

B2B Data, emails & phone

Category: Sales & CRM
Primary Subcategory: B2B Prospecting & Contact Data

Integration details

Description

The SignalHire plugin allows you to search a database of 900 million business professional profiles with verified email addresses and phone numbers. Aggregated data from over 50+ sources and data brokers. Direct exports to your CRM/ATS. GDPR and CCPA compliant.

Integration type: Plugin
Verification status: Not applicable
Platform: ChatGPT
Category: Sales & CRM
Primary Subcategory: B2B Prospecting & Contact Data
Secondary Subcategories: None listed
Brand: SignalHire
Access: Account required
First tracked: 2026-08-22
Tool count: 11
Geography: US

ChatGPT Plugin Discovery Score

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Primary Subcategory

Competing in ChatGPT B2B Prospecting & Contact Data

View Category

Listed in alphabetical order

Primary Subcategory

AI Leads ScoutComing soonGet notified

AI Vibe ProspectingComing soonGet notified

Apollo.ioComing soonGet notified

Canonical Company SearchComing soonGet notified

ClayComing soonGet notified

SignalHireComing soonGet notified

Tools

11 tools agents can invoke

Check the remaining standard Contact credits for the current API key/account. Note: This does NOT return Company API credits. It only returns standard credits used for revealing person contacts. Returns: A JSON string containing a single 'credits' integer (e.g. {"credits": 94980}).
check_balance
Check the remaining daily quota (credits) for performing searches and retrieving candidate profiles WITHOUT revealing contact information. Use this tool to see how many 'without contacts' searches you have left before hitting your daily limit. Returns: A JSON string containing a single 'search_credits_left' integer (e.g. {"search_credits_left": 9967}).
check_without_contacts_credits
Look up a company by name, ID, or slug to get its stable numeric ID. Does NOT consume credits. Returns: Basic company details including the numeric 'id' required for get_company_info.
find_company
Retrieve a complete list of all candidate professional departments supported by the search API.
get_available_departments
Retrieve full company profile including locations, industry, headcount. WARNING: CHARGES 1 COMPANY CREDIT (this is separate from standard contact credits) - always ask the user for explicit permission before calling this tool! Returns: Comprehensive company data including exact headcount and locations.
get_company_info
Retrieve a list of supported industry categories for the search API.
get_available_industries
Fetch the next batch of search results using the scrollId returned by search_candidates_query. The scrollId expires in 15 seconds. Returns: A brief summary containing UID, Name, Location, and Current Job.
scroll_search
Retrieves person profile data without contact details. Useful for saving contact credits when only profile info is needed. CRITICAL INSTRUCTION: ONLY use this tool if the user EXPLICITLY asks to retrieve a profile WITHOUT contact details or to save credits. In all other cases (e.g. when the user just asks for a 'profile'), you MUST default to using retrieve_person_profile instead. Returns: Full employment history, education, and skills. Emails, phones, and social links are REDACTED.
retrieve_person_no_contacts
Retrieve a complete list of all candidate seniority levels (Lvl) supported by the search API.
get_available_levels
Retrieves full person profile and contact information for specific identifiers (LinkedIn URL, email, phone, or SignalHire UID). CRITICAL INSTRUCTION: This is the DEFAULT tool to use when a user asks for a candidate's profile, unless they explicitly specify not to use credits or not to get contacts. WARNING: CHARGES CREDITS - always ask the user for explicit permission before calling this tool! Returns: Complete profile INCLUDING all available emails, phone numbers, and social media links.
retrieve_person_profile
Search for candidates in the database using filters like title, location, company, keywords. Does not consume credits, but uses daily search quota. CRITICAL INSTRUCTIONS FOR AGENTS: - If the user asks to search by department, level, or industry, YOU MUST FIRST call `get_available_departments`, `get_available_levels`, or `get_available_industries` to retrieve the exact list of valid options. - You must then PRESENT THIS LIST to the user and ask them to select from it. Do NOT guess the exact names/IDs yourself. - Supports boolean logic in text fields, e.g., `(Mandarin OR Chinese) AND (Python OR PHP)`. - Pagination via `scroll_search` is impractical for chat agents because the scrollId expires in 15 seconds. If you need more results, it is highly recommended to increase the `size` parameter (up to 100) in this initial query instead. Returns: A brief summary containing UID, Name, Location, and Current Job. To get full history, pass the returned UIDs to `retrieve_person_no_contacts`.
search_candidates_query

SignalHire FAQ

How do I improve a ChatGPT Plugin's discoverability?

The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.

What are SignalHire alternatives on ChatGPT?

As of 2026-09-13, SignalHire competes with AI Leads Scout, AI Vibe Prospecting, Apollo.io, Canonical Company Search, Clay, Crustdata, Data247, DataForB2B, DayOneLead, Demandbase, Enginy, Firmable, FullEnrich, Gojiberry, Grata, Happenstance, HG Insights - RGI, Hunter, Icebreaker, Lusha, Meticulate, Moody's Growth and Strategy, Popl, Reverse Contact, RocketReach, SciLeads, Seamless, Sixtyfour Intelligence, Sprouts Data Intelligence, StoreInspect, Sumble, Super Carl, The Org, ZoomInfo in ChatGPT B2B Prospecting & Contact Data, ranked by public Discoverability Score.

Where is this profile measured?

This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.