# Leadspace

**Canonical:** https://apis.io/providers/leadspace/  
**Website:** https://www.leadspace.com/  
**APIs profiled:** 3

Leadspace is a B2B GTM Data Intelligence Cloud and customer data platform that unifies buyer data, account data, and buying signals into the Leadspace Universal Graph. Its API-first enrichment service resolves partial person and company records into full profiles carrying firmographics (SIC, NAICS, industry, revenue, employee counts), corporate family-tree hierarchy, department sizes, funding and investor history, installed-base and website technology signals, weekly buyer-intent models sourced from Leadspace Intent and Bombora, and persona and predictive fit scores. Leadspace exposes single and bulk enrichment, contact discovery (account expansion), and an intent-only refresh API over a single gateway, alongside Leadspace Studio for segment building and SmartForms for real-time inbound web-form enrichment. As of 2026 Leadspace also ships two self-serve agent-facing products that share one account: Leadspace Sidekick, a Chrome extension overlaying verified contact data and fit scoring on LinkedIn, and Leadspace MCP, a hosted remote Model Context Protocol server that plugs the same data graph into Claude, ChatGPT and any MCP-compatible client with per-user OAuth. It integrates with Salesforce, Marketo, Eloqua, and HubSpot. Leadspace is ISO 27001 certified and SOC 2 Type II audited.

## Kin Score — 64.5 / 100 (strong)

Scored 2026-08-30 under rubric 0.17.2. Trend: flat (+0.0 from 64.5).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 69.7 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 65.8 |
| Developer Ergonomics | 58.9 |
| Commercial Clarity | 85.5 |
| Access Clarity | 85.5 |

## Agent readiness — 48.8 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | served |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | documented |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |

## Access

Free tier, self-serve signup — onboarding: self-serve, pricing: freemium, trial: yes (confidence: high).

## APIs (6)

- **Leadspace Authorization API** — OAuth 2.0 token issuance and refresh
- **Leadspace Discovery API** — Bulk account expansion into net-new contacts
- **Leadspace Enrichment API** — Single and bulk person and company enrichment
- **Leadspace Intent API** — Buyer-intent scoring and refresh
- **Leadspace MCP** — Hosted remote MCP server exposing the Leadspace GTM Data Intelligence Cloud to AI assistants as a custom connector — account intelligence, company and contact lookup, verified e...
- **Leadspace Results API** — Polling for asynchronous discovery results

## MCP servers (1)

- **Leadspace MCP Server**

## Agentic access (1)

- **Leadspace Agentic Access** — 9 operations · 6 acting

## Security (4)

- **Leadspace Authentication** — http/oauth2 · 3 schemes
- **Leadspace Domain Security** — TLSv1.3 · HSTS · DMARC
- **Leadspace Vulnerability Disclosure** — contact published
- **Leadspace Trust Center** — SOC 2 Type II, ISO 27001

## Plans (1)

- **Leadspace Plans Pricing**

## Tags

MCP, AI Agents, B2B Data, Customer Data Platform, Data Enrichment, Intent Data, Sales Intelligence, Account-Based Marketing, Identity Resolution, Firmographics, Lead Scoring, Company

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/leadspace/). Scores are computed from the provider's own public artifacts under a published rubric.