signalbase

name

signalbase

description

An API-first platform that delivers verified, real-time business intent signals—such as funding events, hiring changes, acquisitions, and investor data—via REST endpoints and webhooks to help GTM, sales, and RevOps teams identify opportunities and enrich workflows with fresh market intelligence. Read and write Signalbase data through One: companies, investors, hiringsignals, acquisitionsignals, fundingsignals, jobchangesignals and more, 6 actions with real parameter documentation. Use whenever the user asks to look something up in Signalbase, create or update a record there, or build code against the Signalbase API.

Signalbase through One

An API-first platform that delivers verified, real-time business intent signals—such as funding events, hiring changes, acquisitions, and investor data—via REST endpoints and webhooks to help GTM, sales, and RevOps teams identify opportunities and enrich workflows with fresh market intelligence.

One exposes Signalbase through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.

How to run an action

1. Find the action in the table below, or call search_one_platform_actions with platform signalbase if it is not listed.
2. Call get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
3. Call execute_one_action with parameters copied from that knowledge.

Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.

Before you start

Call list_one_integrations once and confirm Signalbase is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.

Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.

Before a write

Creates, updates, deletes and sends land on a real Signalbase account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.

Actions

Companies

Action	Method	Path	Action id
Get Companies	GET	/companies	conn_mod_def::GKJ625TETvk::MTDhsQy6RE2CGgpLW25idA

Investors

Action	Method	Path	Action id
Get Investor Data	GET	/api/v2/signals/investors	conn_mod_def::GKJ625d2-Rc::dzWMLXsyTQ6QtJCe162orQ

HiringSignals

Action	Method	Path	Action id
Get Hiring Signals	GET	/api/v2/signals/hiring	conn_mod_def::GKJ626HgGhc::erlg0mZmQuWZe_8G9sj1HA

AcquisitionSignals

Action	Method	Path	Action id
Get Acquisition Signals	GET	/signals/acquisitions	conn_mod_def::GKJ626jMYYM::TjBECGVmSy2rcuXZ61UBsw

FundingSignals

Action	Method	Path	Action id
Get Funding Signals	GET	/api/v2/signals/funding	conn_mod_def::GKJ628wh6iw::-o23RjpdRUKamiWYT8ZbuQ

JobChangeSignals

Action	Method	Path	Action id
Get Job Change Signals	GET	/api/v2/signals/job-changes	conn_mod_def::GKJ63KzGv28::Qp7TkU8fQeeoFyXSfmrcuA

When a call fails

The error comes from Signalbase, not from One. A 400 or 422 means your parameters do not match the schema, so re-read the knowledge and fix the field. A 401 or 403 means the connection needs re-authorizing, which no retry will fix. A 404 means the id is not on this account. A 429 means slow down. Never retry a write more than once: the first attempt may have landed.

Full catalog: https://www.withone.ai/knowledge/signalbase

Integration knowledge by One (withone.ai), licensed under One-Knowledge-1.0. Attribution must be preserved in derivative works.