> Source: https://builder-docs.ema.ai/agent-reference/deprecated
> Title: Deprecated Agents

# Deprecated Agents

The following agents have been superseded by newer implementations. They remain available for backward compatibility but should not be used in new workflows. When you open a workflow containing a deprecated agent, a yellow warning banner appears on the agent node.

## Migration Guide

Deprecated Agent

Replacement

Notes

Intent Classifier

[Categorize Conversations and Route](/legacy-docs/agent-reference/core/categorize-conversations-and-route)

Renamed and enhanced with example query matching, multi-intent detection, and human collaboration. Existing workflows continue to work.

External Tool Caller

[Intelligent Actions](/legacy-docs/agent-reference/core/intelligent-actions)

Renamed and expanded to support 200+ integrations. Existing workflows continue to work.

[Text Categorizer](/legacy-docs/agent-reference/core/text-categorizer) (v0)

[Categorizer](/legacy-docs/agent-reference/core/categorizer)

The Categorizer (v1) accepts any input type via named inputs, not just text. Existing Text Categorizer workflows continue to work.

[Document Categorizer](/legacy-docs/agent-reference/core/document-categorizer)

[Categorizer](/legacy-docs/agent-reference/core/categorizer)

The Categorizer accepts documents via named inputs alongside other data. Existing Document Categorizer workflows continue to work.

`search/v0`

[Knowledge Search](/legacy-docs/agent-reference/core/knowledge-search)

The v0 search action is deprecated. Migrate to the current Knowledge Search agent.

`respond_with_sources/v0`

[Respond using Search Results](/legacy-docs/agent-reference/core/respond-using-search-results)

The v0 respond action is deprecated. Use the current Respond using Search Results agent.

`combine_search_results/v0`

[Combine Search Results](/legacy-docs/agent-reference/core/combine-search-results)

Migrate to the current version.

`combine_text_with_sources/v0`

[Combine Text](/legacy-docs/agent-reference/core/combine-text)

Migrate to the current version.

`fixed_response/v0`

[Fixed Response](/legacy-docs/agent-reference/core/fixed-response)

Migrate to the current version.

`custom_agent/v0`

[Custom Agent](/legacy-docs/agent-reference/core/custom-agent)

Migrate to the current version.

`generate_document/v0`

[Generate Document](/legacy-docs/agent-reference/core/generate-document)

Migrate to the current version.

`rule_validation_with_documents/v0`

[Rule Validation](/legacy-docs/agent-reference/core/rule-validation)

Migrate to the current version.

`json_mapper/v0`

[JSON Extractor](/legacy-docs/agent-reference/core/json-extractor)

Migrate to the current version.

`general_hitl/v0`

[Human Collaboration](/legacy-docs/agent-reference/core/human-collaboration)

Migrate to the current version.

## Identifying Deprecated Agents in Existing Workflows

When editing a workflow that contains a deprecated agent, the GWE canvas displays a yellow warning banner on the agent node: _"You are using an agent version that is deprecated."_ The validation system also flags deprecated agents during pre-deploy checks.

To migrate:

1.  Note the deprecated agent's input and output bindings.
2.  Replace the action with the recommended replacement from the table above.
3.  Rewire the inputs and outputs -- the replacement agents typically accept the same or similar bindings.
4.  Test the workflow to verify behavior is preserved.

* * *

> For additional detail on deprecated action versions and migration patterns, see the internal agent reference supplement.