Source: https://internal-agents.com/agents/notion-custom-agents # Notion — Custom Agents Custom Agents is Notion's platform for building agents in a Notion workspace, and Notion ships it internally first. Staff in IT ticketing, supply chain procurement, and recruiting build their own agents. One early internal agent triages bugs posted in Slack into task-database entries. > This entry describes supporting infrastructure that other work builds on. The catalog classifies it as a platform. The record reports no execution workflow. - Approach type: Platform - Deployment stage: Scaled - Autonomy: Unknown - Evidence strength: Detailed primary - Status: Internal - First reported year: 2026 - Work: Support, Finance ops, Recruitment, Security - Invocation: Interactive - Entry reviewed: 2026-09-15 ## Where people stay involved - **cross-team internal tasks → Custom Agents output** — Unknown · Level unknown ## Overview ### Summary Custom Agents is Notion's platform for building agents in a Notion workspace, and Notion ships it internally first. Staff in IT ticketing, supply chain procurement, and recruiting build their own agents. One early internal agent triages bugs posted in Slack into task-database entries. Fact · Reported · High confidence · `notion-custom-agents--summary` Confidence reason: A linked first-party source states the claim. Evidence: - Supports · [1] [Notion's Token Town: 5 Rebuilds, 100+ Tools (Latent Space)](https://latent.space/p/notion) · [Preserved copy](https://github.com/steel-experiments/internal-agents-map/blob/main/archive/sources/notion-custom-agents-source-1/content.md) - Supports · [2] [How we built security into Custom Agents](https://www.notion.com/en-gb/blog/how-we-built-security-into-custom-agents) · [Preserved copy](https://github.com/steel-experiments/internal-agents-map/blob/main/archive/sources/notion-custom-agents-source-2/content.md) ## Supervision evidence ### Operating model assessment Unclassified for cross-team internal tasks → Custom Agents output; human attention boundary: unknown. Inference · Catalog judgment · Unverified confidence · `notion-custom-agents--operating-models-0` Confidence reason: Custom Agents spans many teams and workflows, so no single human-attention boundary applies. Qualifications: - Observation date: 2026-04 Evidence: - Supports · [1] [Notion's Token Town: 5 Rebuilds, 100+ Tools (Latent Space)](https://latent.space/p/notion) · [Preserved copy](https://github.com/steel-experiments/internal-agents-map/blob/main/archive/sources/notion-custom-agents-source-1/content.md) ## Reported metrics ### Headline claim More than 3,000 internal Custom Agents by end of alpha testing Metric · Reported · Medium confidence · `notion-custom-agents--headline-metric` Confidence reason: Notion reported the agent count in its own engineering blog without independent verification. Qualifications: - The source does not report the denominator of this figure. - Reported by: Notion - Scope: Internal Notion Custom Agents at the end of alpha; excludes the separate customer alpha count - Observation date: 2026-04 Evidence: - Supports · [2] [How we built security into Custom Agents](https://www.notion.com/en-gb/blog/how-we-built-security-into-custom-agents) · [Preserved copy](https://github.com/steel-experiments/internal-agents-map/blob/main/archive/sources/notion-custom-agents-source-2/content.md) · Preserved content.md, lines 51 ### Key observation More than 3,000 internal Custom Agents by end of alpha testing Metric · Reported · Medium confidence · `notion-custom-agents--key-metrics-0` Confidence reason: Notion reported the agent count in its own engineering blog. Qualifications: - The source does not report the denominator of this figure. - Reported by: Notion - Scope: Internal Notion Custom Agents at the end of alpha; excludes the separate customer alpha count Evidence: - Supports · [2] [How we built security into Custom Agents](https://www.notion.com/en-gb/blog/how-we-built-security-into-custom-agents) · [Preserved copy](https://github.com/steel-experiments/internal-agents-map/blob/main/archive/sources/notion-custom-agents-source-2/content.md) · Preserved content.md, lines 51 ### Key observation Agent harness rebuilt three to five times as models improved Metric · Reported · Medium confidence · `notion-custom-agents--key-metrics-2` Confidence reason: Participants give differing approximate rebuild counts for harness, framework, and feature; not a precise engineering inventory. Qualifications: - The source does not report the denominator of this figure. - Reported by: Notion - Scope: Notion agent/framework rebuilds recalled by participants; estimates range from three to five Evidence: - Supports · [1] [Notion's Token Town: 5 Rebuilds, 100+ Tools (Latent Space)](https://latent.space/p/notion) · [Preserved copy](https://github.com/steel-experiments/internal-agents-map/blob/main/archive/sources/notion-custom-agents-source-1/content.md) · Preserved content.md, lines 115, 275–277, 819 ## Reported outcomes and statements ### Key observation Notion's security team is one of the most active internal users Fact · Reported · Medium confidence · `notion-custom-agents--key-metrics-1` Confidence reason: Qualitative first-party description; no comparative activity count is supplied. Qualifications: - Scope: Notion security team internal Custom Agent use Evidence: - Supports · [2] [How we built security into Custom Agents](https://www.notion.com/en-gb/blog/how-we-built-security-into-custom-agents) · [Preserved copy](https://github.com/steel-experiments/internal-agents-map/blob/main/archive/sources/notion-custom-agents-source-2/content.md) · Preserved content.md, lines 57 ## Sources 1. [Notion's Token Town: 5 Rebuilds, 100+ Tools (Latent Space)](https://latent.space/p/notion) - Podcast · Direct participant · Evidence - Original URL: - Published: 2026-04-14 · Accessed: 2026-08-13 · Last verified: 2026-08-31 - Preserved copy in the repository: 2. [How we built security into Custom Agents](https://www.notion.com/en-gb/blog/how-we-built-security-into-custom-agents) - Engineering blog · First party · Evidence - Original URL: - Accessed: 2026-08-13 · Last verified: 2026-08-31 - Preserved copy in the repository: