🛰️ The Case for `.well-known/mcp.llmfeed.json`

Why `.well-known/`?

.well-known/ is the standard gateway for protocols to declare machine-consumable context:

✅ security.txt → for security contacts
✅ webfinger → for identity resolution
✅ openid-configuration → for OpenID Connect
✅ oauth-authorization-server → for OAuth

In a World of LLMs

LLM-based agents need to know:

✅ What this site offers
✅ How to interact
✅ What can be trusted
✅ Who certifies what

Why `.well-known/mcp.llmfeed.json`?

Placing MCP here provides:

✅ Discoverability → any agent can look in a known place
✅ Non-intrusive → no impact on frontend routing
✅ Cross-domain friendly
✅ Open standards compliant
✅ Neutral and decentralized → no central registry required

How It Complements HTML

LLMFeed doesn’t replace HTML:

HTML serves humans
.llmfeed.json serves agents

It supplements it with:

✅ Trust
✅ Structure
✅ Intent

Why Signatures Matter

Unlike security.txt or robots.txt, MCP feeds can be:

✅ Signed → cryptographic proof of authorship
✅ Certified → attested by a third party (ex: llmca.org)

This is critical in the age of:

LLM-driven search
Agent-mediated interactions
AI-first browsers

Agents need to verify — not just read.

Example Scenarios

AI-First Browser

On visiting:

https://example.com/.well-known/mcp.llmfeed.json

The browser can immediately:

✅ Detect site capabilities
✅ Verify trust level
✅ Surface certified actions to the user
✅ Adapt its interaction model accordingly

LLM-Based Assistant

When a user mentions:

“Check flights on example.com”

The assistant can:

✅ Retrieve .well-known/mcp.llmfeed.json
✅ See that the site exposes signed APIs for flights
✅ Know which endpoints are agent-optimized
✅ Guide the user confidently

Why It Fits MCP Philosophy

.well-known/mcp.llmfeed.json is:

✅ Declarative → what can be done
✅ Trustable → signed
✅ LLM-friendly → readable and auditable by LLMs
✅ Composable → can point to other feeds (index, exports, prompts...)

A New Foundation for the Agentic Web

Crawling is not enough.
SEO is not enough.
Agents need structured, verifiable context.

.well-known/mcp.llmfeed.json is the missing piece:

👉 A clear, auditable declaration:

“This site is agent-ready. Ask me anything.”

Final Thought

In the emerging Agentic Web, .well-known/mcp.llmfeed.json plays a pivotal role:

✅ It makes intent and trust machine-visible
✅ It empowers agents to reason and act
✅ It aligns with Web standards philosophy

👉 It’s time for the Web to declare itself agent-ready.

🛰️ The Case for .well-known/mcp.llmfeed.json