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underthesea

Python toolkit for Vietnamese NLP with a multi-provider agent module that calls LLM APIs using only the standard library.

Harness by undertheseanlp

IndexedApache-2.0★ 1,811
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pip install underthesea

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About

Underthesea is an open-source Python toolkit with an agent module and Vietnamese NLP modules. The agent calls OpenAI, Azure OpenAI, Anthropic and Gemini APIs using only the Python standard library, and supports streaming, tool calling with 12 built-in tools, and multi-session runs that keep a progress file. Each agent call is traced to a local directory unless tracing is disabled with an environment variable.

Use cases: agent-orchestration

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Fact sheet

Languages
PythonREADME
Packages
underthesea (pypi)README
Streaming
YesREADME
Memory
long-termREADME
Model providers
openai, azure-openai, anthropic, googleREADME
Maturity
StableREADME

Facts extracted by Claude Haiku 5.5 from the linked sources on Oct 24, 2026. Wrong fact? Tell us.

Alternatives

Frameworks for the same language with a similar way of orchestrating agents.

Signals

Stars
1,811
Forks
307
Open issues
21
Weekly downloads
8,588
Last commit
Sep 5, 2026 (1 month ago)
Last release
May 17, 2026 (5 months ago)
Last package publish
May 17, 2026 (5 months ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Packages
pypi underthesea
License
Apache-2.0
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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underthesea. Agent Mart. https://agentmart.dev/harnesses/underthesea (last updated 2026-10-24)