# Keyplay
ID: 05-keyplay
Page: https://gtmmcps.com/tools/05-keyplay
JSON: https://gtmmcps.com/data/tools/05-keyplay.json
Documentation references: https://gtmmcps.com/docs/05-keyplay/
Category: Signals & Intent
MCP support: official
Testing: RESEARCHED
API access: paid
Last checked: 2026-09-07
Endpoint check: docs-only; date: 2026-09-04

Builds a mathematical ICP model from a company's existing best customers, then scores and ranks a universe of target accounts against that model using 750+ pre-built "signals" (hiring velocity, tech stack, industry category) plus custom web-scraped signals.

## MCP links
- https://api.keyplay.io/mcp
- https://docs.keyplay.io/en/articles/13643214-keyplay-mcp

## Sources
- https://keyplay.io/pricing/
- https://keyplay.io/product/
- https://www.salesforge.ai/directory/sales-tools/keyplay
- https://syncgtm.com/blog/keyplay-review
- https://docs.keyplay.io/en/articles/13643214-keyplay-mcp
- https://adamgtm.com/brand/keyplay/
- https://api.keyplay.io/mcp

## Research notes
No MCP found on GitHub, mcp.so, glama.ai, or pulsemcp.com. A free "List Builder" tier exists (25 credits, 750+ signals, CSV export) - genuinely solo-operator-accessible at $0 - but ICP-modeling and Enrichment API access sit behind paid tiers ($18-20K/yr "Growth," custom "Scale"). Keyplay's own homepage indicates it has joined a company called Inflection ("the B2B marketing platform where agents actually execute"); this ownership transition could not be independently verified beyond Keyplay's own site copy, so flag as unconfirmed. 2026-09-02: CHANGED none-found -> official. Keyplay's own help center documents a remote MCP at https://api.keyplay.io/mcp (install: claude mcp add keyplay --transport http https://api.keyplay.io/mcp) with OAuth for Claude.ai and Claude Desktop or an API key for Claude Code. Tools documented: search_accounts, get_account_data, filter_accounts, list_filter_options, plus whoami and switch_customer; five guided prompts: analyze_customers, define_icp, concept_campaign, build_target_list, write_account_brief. The docs page does not state which plan includes it. Pointer came from adamgtm.com (run by Keyplay co-founder Adam Schoenfeld), which states it shipped February 2026 ahead of the Inflection acquisition; the acquisition is now confirmed by a merger announcement on Keyplay's own homepage. keyplay.io/llms.txt, keyplay.io/mcp and the MCP registry carry nothing, so the help-center article is the only receipt. 2026-09-07: https://api.keyplay.io/mcp returned 401 to an MCP initialize POST (https://api.keyplay.io/mcp).

## Named capabilities
Tool names below are reported by sources. Their presence is not a successful call.
- filter_accounts: Filter and browse millions of accounts using criteria; evidence: docs; party: vendor
- get_account_data: Get detailed enrichment data for a specific account by ID; evidence: docs; party: vendor
- list_filter_options: Discover valid IDs for use with filter_accounts; evidence: docs; party: vendor
- search_accounts: Look up a specific company by name, domain, or LinkedIn URL; evidence: docs; party: vendor
- switch_customer: Set the active workspace for the current OAuth/SSO session; evidence: docs; party: vendor
- whoami: Get current MCP authentication and customer context; evidence: docs; party: vendor

## CLI evidence
Status: none-found

Read current vendor documentation before configuring or running commands.