Artificial intelligence · llms.txt file breakdown
A compact entry point for LangChain’s open-source packages and related LangSmith and Fleet docs, with additional nested indexes.
The actual file
The saved llms.txt text, displayed as source. The file belongs to its publisher; the live endpoint may change.
Complete saved Markdown shown below.
# Docs by LangChain
> Documentation for LangSmith, Fleet, and our open source packages.
- [AGENT DEVELOPMENT LIFECYCLE (1461 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE.
- [PRODUCTS AND SETUP (213 pages)](https://docs.langchain.com/_llms/products-and-setup.txt): Documentation for PRODUCTS AND SETUP.
## OpenAPI Specs
- [agent-server-openapi](/langsmith/agent-server-openapi.json)
- [openapi](https://api.host.langchain.com/openapi.json)
- [langsmith-platform-openapi](/langsmith/langsmith-platform-openapi.json)
> The links below point to documentation indexes. Follow each `/_llms/` index recursively until you reach documentation pages.
## Indexes
- [AGENT DEVELOPMENT LIFECYCLE (1461 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE.
- [AGENT DEVELOPMENT LIFECYCLE / Build (451 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/build.txt): Build agents with open source
- [AGENT DEVELOPMENT LIFECYCLE / Build / Python (229 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/build/python.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Build / Python.
- [AGENT DEVELOPMENT LIFECYCLE / Build / TypeScript (235 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/build/type-script.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Build / TypeScript.
- [AGENT DEVELOPMENT LIFECYCLE / Deploy (252 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/deploy.txt): Ship agents to production
- [AGENT DEVELOPMENT LIFECYCLE / Deploy / Get started (145 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/deploy/get-started.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Deploy / Get started.
- [AGENT DEVELOPMENT LIFECYCLE / Monitor (681 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/monitor.txt): Trace, debug, and observe agents
- [AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference (580 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/monitor/reference.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference.
- [AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference / LangSmith REST API (572 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/monitor/reference/lang-smith-rest-api.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference / LangSmith REST API.
- [AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference / LangSmith REST API / Administration (154 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/monitor/reference/lang-smith-rest-api/administration.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference / LangSmith REST API / Administration.
- [PRODUCTS AND SETUP (213 pages)](https://docs.langchain.com/_llms/products-and-setup.txt): Documentation for PRODUCTS AND SETUP.
- [PRODUCTS AND SETUP / LangSmith setup (143 pages)](https://docs.langchain.com/_llms/products-and-setup/lang-smith-setup.txt): Hosting and administration
Measured from the saved file
Size measures the captured UTF-8 text, not compressed transfer size. Tokens are counted with a named tokenizer; other models can count differently. Neither measure establishes context compatibility or answer quality.
Documentation for LangSmith, Fleet, and our open source packages.
Context architecture
2 H2 sections organize 17 parsed Markdown links. 0 links point to .md or .markdown paths; 1 link occurrences use another hostname. Linked destinations have not been recursively validated.
| H2 section | Links | UTF-8 bytes | Tokens |
|---|---|---|---|
| OpenAPI SpecsLine 8 | 3 | 325 | 77 |
| IndexesLine 16 | 12 | 2395 | 584 |
Link counts exclude parsed fenced and inline code and resolve relative destinations against the final endpoint. Section sizes cover the text below each H2 until the next H2.
Embedded material
Embedded example text and links to further documentation are counted separately. A code block does not establish that a sample runs or that an authentication flow succeeds.
Publisher prioritization
No H2 section named “Optional” was detected in this file.
The community proposal uses Optional by convention for secondary links that can be skipped for a shorter context. This label does not establish that everything outside it is critical, or that the material inside it is deprecated.
Machine-readable routes
No MCP or Model Context Protocol term was detected in the captured file. 0 links have MCP-related labels or paths. 0 fenced lines match mcpServers, mcp_servers or an mcp add command.
These are text and link observations. No MCP server connection, authentication or tool call was tested.
Index and bundle
Verified text companion
A verified text response establishes a companion at the checked URL. It does not prove the bundle contains all product documentation, that generation is automated, or that it fits an assistant’s context window.
Change evidence
This capture establishes a baseline. Update frequency cannot be determined from one observation.
File changes can reveal documentation edits or navigation changes. They do not by themselves measure product release velocity, accuracy, agent adoption or AI visibility.
9eb354e9a8bed5314c88ddb432dcb1e18d11caf933aa44743243bd361b29ce01Counts use a deterministic parser, not a spec-compliance grade. Unusual Markdown and indented code can fall outside its recognized patterns. See the llms.txt proposal and tokenizer implementation.