---
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.
license: One-Knowledge-1.0 (https://www.withone.ai/licenses/knowledge)
metadata:
  author: one-systems
  attribution: Integration knowledge by One (withone.ai)
  platform: signalbase
  generated-from: one-knowledge-base
---

# 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](https://www.withone.ai/licenses/knowledge). Attribution must be preserved in derivative works.