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Where Agentic fits.
Agentic describes a website’s public resources and offers a separate contract for checking an action’s result.
| Format | Main purpose | Use it with Agentic |
|---|---|---|
| llms.txt ↗ | Help agents find and read documentation. | The generator reads it as a source. Keep it as a documentation index alongside your structured Agentic files. |
| AGENTS.md ↗ | Tell coding agents how to work in a repository. | Use it for setup, tests, and coding conventions. Agentic describes actions offered by a service. |
| agents.txt / agents.json ↗ | Announce a site’s agent capabilities and endpoints. | Site discovery overlaps. Agentic uses its own schema and separately defines action recovery; neither convention requires the other. |
| OpenAPI ↗ | Describe HTTP operations, inputs, responses, and authentication. | Site Profile 1.1 indexes documented operations. Action Profile 1.0 binds a supported OpenAPI 3.1 subset for recovery. |
| MCP ↗ | Connect AI applications to tools, data, and workflows. | Site profiles record advertised MCP links. Use MCP itself to expose and authorize tools. |
Agentic’s two files
agentic.txt is a readable index linked to the JSON.agentic.json contains either a site profile with resources and API operations, or an action contract for request tracking and result verification. JSON is authoritative.
llms.txt
A Markdown guide with context and links to a site’s content. It can point readers toward your Agentic files and integration guide.
Official documentation ↗AGENTS.md
Repository instructions support work on the codebase. An Agentic profile belongs with the API an agent calls.
Official documentation ↗agents.txt / agents.json
These manifests declare available protocols and services. Agentic site profiles index public resources; action profiles additionally define result verification.
Official documentation ↗OpenAPI
Keep OpenAPI as your API description. Agentic specifies which operations to use and what evidence establishes that the original action completed.
Official documentation ↗MCP
This project provides MCP tools for generation, validation, and auditing. Tool access and the service’s action contract remain separate responsibilities.
Official documentation ↗Start with your website.
Generate files from your public documentation and API descriptions.