Day.ai

• ▸Customer Memory: a context graph built from automatically permissioned ingestion of the team's email, calendar, meetings, and Slack
• ▸Named AI agents with a job description, skills, and a human they report to; skills run on a schedule, on company events, or on request
• ▸Example agent roles by tier: Sales Assistant, Meeting Notetaker, User Researcher, Onboarding Coach (Turbo); Business Development Representative, Account Executive, Sales Operator, CRM Data Entry Specialist, Sales Coach, Marketing Director (Professional); Lead Analyst, GTM Strategist, Senior Product Manager (Executive)
• ▸Gmail and Calendar ingestion, meeting recording and notes, and recording clips on every tier, including Free
• ▸Tasks, email drafts, web search, pages and documents, notifications, and lists and relationships (Turbo and above)
• ▸Pipeline and opportunity management, custom views, custom properties with backfill, and pipeline analytics (Professional and above)
• ▸Prospecting and advanced custom instructions (Executive)
• ▸Hosted MCP server, the open-source TypeScript day-ai-sdk, and GTM Brain, a Claude Code harness for workspace administration

Authentication

OAuth 2.0: the SDK registers its OAuth client and auto-refreshes tokens, and MCP clients are prompted to authorize in the browser on first use. MCP access inherits the Agent tier's tools, the workspace role's data access, and the tier's rate limits and quotas.

Base URL

https://day.ai/api/mcp

Rate limits

No numeric limits retrieved; the MCP page says the rate limits and quotas of the user's Agent tier apply.

Notable endpoints

• search_objects: find contacts, organizations, opportunities, meeting recordings, and other objects with property and relationship filters
• create_or_update_person_organization and create_or_update_opportunity: write CRM records (opportunities from Professional)
• get_meeting_recording_context and create_meeting_recording_clip: meeting transcripts, context, and clips
• create_email_draft and send_notification_mcp: email drafts and email or Slack notifications (Turbo and above)
• analyze_pipeline_metrics and the CSV import tools (Professional and above)
• search_prospects and batch create or update tools (Executive)

MCP tools exposed

search_objectscreate_or_update_person_organizationcreate_or_update_workspace_contextget_meeting_recording_contextcreate_meeting_recording_clipget_share_urlread_crm_schemaread_pageactivate_skilldeactivate_skillcreate_or_update_actioncreate_or_update_relationshipcreate_or_update_listcreate_pageupdate_pagecreate_email_draftsend_notification_mcpassistant_settingsmanage_skillswhoamicreate_or_update_opportunitycreate_or_update_custom_propertybackfill_custom_propertyanalyze_pipeline_metricscreate_import_from_filesave_import_mappingstart_importget_import_progressget_import_errorsget_imports_by_object_typeanalyze_csvread_csv_fileread_filetransform_csvcreate_viewupdate_viewconnect_slackopen_email_sharing_rulesmanage_workspace_membersbatch_create_or_update_opportunitiesbatch_create_or_update_people_organizationssearch_prospects

Machine-readable spec

No OpenAPI link

Published by the vendor themselves — not community forks.

• day-ai-sdk24 stars

  TypeScript SDK for using the Day AI API (MCP tools) with OAuth (MIT license); example templates: Desktop (Electron, React, Claude SDK), Desktop Agent SDK, Community Builder (Next.js), Mobile (React Native, Expo), and Vercel Cron.

• gtm-brain11 stars

  A Claude Code harness for running a Day AI workspace like a GTM operating system: maps the GTM before signup, then plans, audits, and implements workspace configuration through the Day AI MCP server (Owner or Admin role required).

• company-brain-evaluation1 stars

  Company-brain evaluation skill, run from Claude Code or Codex, that looks for performance and security improvements using context graph and agent control plane concepts.

• linear-setup0 stars

  Skill to connect customer memory to product source of truth in Linear.

Introducing Day AI: Make Every Rep Your Best Rep — Day AI

Checked 2026-09-24 against their pricing page. Vendors change pricing without notice.

Day AI's founder and CEO, Christopher O'Donnell, who says he led the platform at HubSpot, describes the product as "a context graph and an agent control plane" rather than a CRM with AI bolted on. Agents read and write one multiplayer context graph built from the team's conversations, and people work from the same graph, and each agent is a paid virtual worker deployed to a human colleague. The company is backed by Sequoia.

Sales and revenue operations teams that want to delegate repetitive CRM upkeep, prospecting research, and meeting follow-up to AI agents rather than reps or ops staff, and are comfortable paying a flat per-agent monthly fee for each virtual worker they deploy.

Pricing is per deployed agent, and pipeline management, custom properties, pipeline analytics, and prospecting sit on the Professional or Executive tier. The MCP page says a paid Agent tier is required to use the MCP server. The footer's API & SDK link points to the day-ai-sdk GitHub repo, whose methods call MCP tools under the hood; no separate REST API reference or OpenAPI specification was retrieved. Every subprocessor on the published list is located in the United States, and no data residency option was retrieved.

Systems of record for customer relationships that treat the data model as programmable, competing on API quality and flexibility rather than on breadth of built-in modules.

Category: Modern and developer-facing CRM. Membership is decided by 3 stated tests, not by category tags — see them and the full comparison.

AttioAPIMCPFully user-definable objects with an API that mirrors them, plus a documented MCP server.ClosefolkAPIHubSpot CRMPipedriveTwentyOpen source and self-hostable, which changes the lock-in calculation more than any feature does.

• A standalone REST API reference or OpenAPI specification separate from the SDK and MCP surface
• Numeric MCP rate limits or quotas per Agent tier
• A data residency option outside the United States
• Time-boxed free trial terms for paid tiers, if any
• A machine-readable OpenAPI specification was not included in the reviewed source set.