Getting started
What is Signl?
Signl is a social listening engine for LinkedIn: it follows the conversations your buyers take part in, finds who shows buying intent, and writes the first line.
Connect your agent to Signl
Connect Claude, ChatGPT or any MCP client to Signl using OAuth or an API key. Takes about two minutes.
Moving from Trigify
Trigify closes on 22 October 2026. Export what you can, then import your tracked profiles and keywords into Signl as sources in a few minutes.
Connect ChatGPT to Signl
Add Signl as a custom MCP connector in ChatGPT, and what to do if the setup does not match what you see.
Connect Cursor, VS Code and the CLI
The API key path for clients without an OAuth flow: generating a key, adding it as a bearer token, and the config for each client.
Plans and billing
How plans and fair use work
Signl is priced by the sources you watch, at a flat price. Everyone a source finds is included, with verified emails, within fair use. There are no credits.
Setup credits have ended
The setup ladder that paid credits for setup steps ended on 5 October 2026. Signl now has two plans, Self-serve and Managed, and no free plan.
Plans and pricing
Signl has two plans: Self-serve at $99 a month (25 sources, unlimited seats, everyone found included) and Signal Engine, our team running it for you, at $2,000 a month. No credits.
When a plan limit is reached
When a fair use limit runs out, only that thing waits for the 1st: likers stop, comments carry on, email lookups wait. Nothing is charged per person.
Using Signl
Search companies and buying signals
How to ask your agent for the right companies: filters that work, signals you can search on, and how results are ranked.
Define your ICP
Your ideal customer profile scores every search, weekly drop and Loop automatically. It is the highest-leverage setup step.
Loops: standing searches that watch your market
A Loop is a saved search that re-runs on a schedule and collects new matching companies, so you find accounts without asking.
Signl MCP tool reference
Every Signl MCP tool: what it does, what it costs, and what is kept in the Signl app instead.
Have your agent check Signl every morning
Signl watches your sources in the background. A daily scheduled prompt in Claude or ChatGPT turns what it found overnight into a short list of people worth contacting.
What Signl covers, and what it does not
The 35 industry categories, the filters that exist, the signal types that are real, and the things people ask for that we do not have.
Security and data handling
How credentials are stored, what a connected agent can reach, how long person-level data is kept, and how to request erasure.
See what Signl made you
The Dashboard's Pipeline tab counts the replies, meetings and deals your tools sent back for people Signl found, with what the deals are worth, by month and by source.
Companies: the accounts behind the people
The Inbox's Companies view groups the people Signl found by company, shows their roles and who is still missing, scores each company and lets you reach them together.
Sources Signl finds for you
Signl suggests authors and topic searches where your ICP people already gather, from what your sources found, with the reason and the people behind each.
Market: the weekly brief and competitors
Every Monday, a brief of what people who fit your ICP said: themes, pains, objections, competitors and their exact words. On Pro, with a competitor radar.
Watch your team's posts
One source watches what everyone at your company posts on LinkedIn, collects who engages, never your colleagues, and shows whose posts bring people in.
Work as a team
Invite teammates into one workspace on Pro, give them roles, route people to the right person by country, persona or source, and see who owns whom.
Troubleshooting
My agent cannot see Signl's tools
If your AI says it has no Signl tools, it is almost always one of four things. Work through them in this order.
No verified email was found
What a miss means, why you are not charged for one, and what to try next when a contact cannot be verified.
Error messages and what they mean
Every result Signl can return when something is unavailable, what caused it, and how to resolve it.
Still stuck?
We answer support questions ourselves, usually the same day.