PyPI · pypi:langchain-protocol

langchain-protocol active

Python bindings for the LangChain agent streaming protocol

The latest stable version of langchain-protocol is 0.0.21, published on 2026-11-05. Verified by Vigia on 2026-11-13.

Latest stable version	0.0.21
Published	2026-11-05 16:16:45 UTC
Install	`pip install --upgrade langchain-protocol`
Requires	`python <4.0.0,>=3.10.0`
License	MIT
Advisories on latest version	none known
Last verified	2026-11-13 14:33:04 UTC
Sources	pypi.org

Maintenance

Activity	active
Last stable release	2026-11-05 16:16:45 UTC · 7 days ago
Stable releases in the last 12 months	14
Published versions	14

Heuristic based only on release dates; it does not measure issue or security response times.

Version history

Version	Published
`0.0.21`	2026-11-05 16:16:45 UTC
`0.0.20`	2026-10-20 11:13:49 UTC
`0.0.19`	2026-08-26 21:11:59 UTC
`0.0.18`	2026-06-18 17:08:25 UTC
`0.0.17`	2026-06-12 18:39:50 UTC
`0.0.16`	2026-05-28 23:05:10 UTC
`0.0.15`	2026-05-01 22:30:03 UTC
`0.0.14`	2026-04-29 16:40:17 UTC
`0.0.13`	2026-04-28 21:08:10 UTC
`0.0.12`	2026-04-25 01:05:00 UTC
`0.0.11`	2026-04-23 22:13:15 UTC
`0.0.10`	2026-04-23 17:31:33 UTC
`0.0.9`	2026-04-23 17:01:21 UTC
`0.0.8`	2026-04-16 20:01:37 UTC

Showing the 14 most recent of 14 versions. JSON

Version compatibility

Newest stable version that declares support for each runtime version (from the requirements published with each version).

Runtime	Newest compatible version
`python 3.8`	none
`python 3.9`	none
`python 3.10`	`0.0.21`
`python 3.11`	`0.0.21`
`python 3.12`	`0.0.21`
`python 3.13`	`0.0.21`

Give your AI agent these facts

Vigia is a free MCP server: your coding agent checks versions, breaking changes and vulnerabilities before it writes code. No signup, no API key.

claude mcp add --transport http vigia https://vigia.coredls.cloud/mcp

Add to Cursor Add to VS Code ★ Star on GitHub

Any other MCP client

{ "mcpServers": { "vigia": { "url": "https://vigia.coredls.cloud/mcp" } } }

Agent skill (SKILL.md): tells the agent when to use Vigia · GitHub Action for pull requests

Frequently asked questions

What is the latest version of langchain-protocol?

The latest stable version of langchain-protocol is 0.0.21, published on 2026-11-05. Verified by Vigia on 2026-11-13.

How do I install the latest version of langchain-protocol?

Run pip install --upgrade langchain-protocol. The latest stable version is 0.0.21 (verified 2026-11-13).

Is langchain-protocol deprecated?

No. langchain-protocol is not marked as deprecated in the registry.

Which Python version does langchain-protocol require?

langchain-protocol 0.0.21 declares this requirement: python <4.0.0,>=3.10.0.

Does langchain-protocol 0.0.21 have known vulnerabilities?

No known advisories affect langchain-protocol 0.0.21 according to the data Vigia checks.

Is langchain-protocol still maintained?

langchain-protocol published 14 stable releases in the last 12 months; the most recent was 7 days ago. Activity: active.

Observed changes

hu Nov 05 2026 16:18:31 GMT+0000 (Coordinated Universal Time) — released 0.0.20 → 0.0.21
ue Oct 20 2026 11:16:44 GMT+0000 (Coordinated Universal Time) — released 0.0.19 → 0.0.20

Related packages

Badges for your README

Show the latest version, maintenance status and deprecation status of this package. Copy the Markdown:

[![version](https://vigia.coredls.cloud/badge/pypi/langchain-protocol/version.svg)](https://vigia.coredls.cloud/pypi/langchain-protocol)
[![maintained](https://vigia.coredls.cloud/badge/pypi/langchain-protocol/maintained.svg)](https://vigia.coredls.cloud/pypi/langchain-protocol)
[![status](https://vigia.coredls.cloud/badge/pypi/langchain-protocol/status.svg)](https://vigia.coredls.cloud/pypi/langchain-protocol)

For agents

GET https://vigia.coredls.cloud/v1/packages/pypi/langchain-protocol
GET https://vigia.coredls.cloud/v1/packages/pypi/langchain-protocol/versions/{version}