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Notion · Platform

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.

1 Supports2 Supports

Supporting infrastructure

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
Work
Support, Finance ops, Recruitment, Security
Human involvement
Unknown
Invocation
Interactive
Deployment stage
Scaled
Evidence strength
Detailed primary
Entry reviewed

Where people stay involved

The catalog records no execution workflow for this entry, so the scopes below describe access to the system rather than work it completes on its own.

  • cross-team internal tasks → Custom Agents outputUnknown · Level unknown

Unclassified for cross-team internal tasks → Custom Agents output; human attention boundary: unknown.

1

Observation date
2026-04

Reported results and limitations

The catalog records what the sources report, with the scope and the denominator of every figure. A qualification below limits the figure it sits under.

Reported metrics

Headline claim

More than 3,000 internal Custom Agents by end of alpha testing

2

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
Key observation

More than 3,000 internal Custom Agents by end of alpha testing

2

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
Key observation

Agent harness rebuilt three to five times as models improved

1

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

Reported outcomes and statements

Key observationFact

Notion's security team is one of the most active internal users

2

Scope
Notion security team internal Custom Agent use

Sources and research details

Citations link to the original publisher. Each source also keeps a preserved copy in the repository, so a changed or removed page stays checkable.

  1. Notion's Token Town: 5 Rebuilds, 100+ Tools (Latent Space)https://latent.space/p/notionPodcast · Direct participant · Last source verification: 2026-08-31
    Preserved copy ↗
  2. How we built security into Custom Agentshttps://www.notion.com/en-gb/blog/how-we-built-security-into-custom-agentsEngineering blog · First party · Last source verification: 2026-08-31
    Preserved copy ↗
Research details for every claim on this page
  1. Summary
    Statement type
    Fact
    Provenance
    Reported
    Confidence
    High
    Confidence reason
    A linked first-party source states the claim.
  2. Headline claim
    Statement type
    Metric
    Provenance
    Reported
    Confidence
    Medium
    Confidence reason
    Notion reported the agent count in its own engineering blog without independent verification.
    Reported by
    Notion
    Scope
    Internal Notion Custom Agents at the end of alpha; excludes the separate customer alpha count
    Denominator
    Not reported
    Method
    Not reported
    Observation date
    2026-04
  3. Key observation
    Statement type
    Metric
    Provenance
    Reported
    Confidence
    Medium
    Confidence reason
    Notion reported the agent count in its own engineering blog.
    Reported by
    Notion
    Scope
    Internal Notion Custom Agents at the end of alpha; excludes the separate customer alpha count
    Denominator
    Not reported
    Method
    Not reported
    Observation date
    Not reported
  4. Key observation
    Statement type
    Fact
    Provenance
    Reported
    Confidence
    Medium
    Confidence reason
    Qualitative first-party description; no comparative activity count is supplied.
    Scope
    Notion security team internal Custom Agent use
  5. Key observation
    Statement type
    Metric
    Provenance
    Reported
    Confidence
    Medium
    Confidence reason
    Participants give differing approximate rebuild counts for harness, framework, and feature; not a precise engineering inventory.
    Reported by
    Notion
    Scope
    Notion agent/framework rebuilds recalled by participants; estimates range from three to five
    Denominator
    Not reported
    Method
    Not reported
    Observation date
    Not reported
  6. Operating model assessment
    Statement type
    Inference
    Provenance
    Catalog judgment
    Confidence
    Unverified
    Confidence reason
    Custom Agents spans many teams and workflows, so no single human-attention boundary applies.
    Observation date
    2026-04

The catalog records no related implementation for this entry yet.

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