MCP App Store
by KeenEthics
Communication

OnMessage

by OnMessage

Overview

OnMessage is where a company's messaging strategy lives: its audiences, offerings, brand foundation, narrative, voice, and writing guidelines, all maintained as a single source of truth instead of scattered across decks and documents. This connector gives Claude live access to that Message Library. Instead of re-explaining the brand at the start of every conversation, Claude reads the approved strategy directly: who the audience is, what the offering actually does, which words the company uses and avoids. Then it writes from it. Anyone who connects can browse, read, and search the files their OnMessage role already lets them see. People whose role carries edit access also get write tools: creating and editing workflow files, storing documents like transcripts and research reports into the library where they become searchable, and updating structured brand strategy such as offerings, audiences, personas, and glossary terms. Every write is versioned and reversible in the app. Access mirrors OnMessage permissions exactly and is re-checked on every request, so the connector can never reach anything the same person could not reach while signed in. Agencies managing several client brands can list the organizations they have access to and switch between them, with the active brand named on every connection. Requires an OnMessage account on a paid plan or an active trial.

Tools

add_brand_pillar

Claude

add_glossary_term

Claude

create_audience

Claude

create_brand_voice

Claude

create_offering

Claude

create_persona

Claude

deactivate_audience

Claude

deactivate_offering

Claude

deactivate_persona

Claude

delete_library_file

Claude

edit_library_file

Claude

get_library_guide

Claude

list_library_files

Claude

list_organizations

Claude

read_library_file

Claude

remove_brand_pillar

Claude

remove_glossary_term

Claude

save_document

Claude

search_library_files

Claude

set_default_brand_voice

Claude

switch_organization

Claude

update_audience

Claude

update_brand_foundation

Claude

update_brand_pillar

Claude

update_brand_voice

Claude

update_glossary_term

Claude

update_offering

Claude

update_persona

Claude

write_library_file

Claude

App Stats

29

Tools

Claude

Platforms

Works with

Claude

Data refreshed daily