# What software sites offer AI agents, month by month

Each month we check the 5,000 most-linked software sites for what they publish for AI agents and what stands in their way. Latest survey: October 2026. Counts only, from 5 up. CC BY 4.0.

Source: https://agentdrives.com/research/adoption?via=md · Data: https://agentdrives.com/research/adoption.json?via=md · The full survey: https://agentdrives.com/research/state-of-agent-access-2026-10?via=md

## llms.txt

Sites with an llms.txt, on the site or its docs.

| Month | Share | Count |
|---|---|---|
| October 2026 | 22% | 859 of 3,973 sites |

Chart: https://agentdrives.com/research/adoption/llms-txt.svg?via=md

## MCP server

Sites with an MCP server, in the official registry or a server card.

| Month | Share | Count |
|---|---|---|
| October 2026 | 3% | 158 of 5,000 sites |

Chart: https://agentdrives.com/research/adoption/mcp.svg?via=md

## OpenAPI

Sites with an OpenAPI document at the usual paths.

| Month | Share | Count |
|---|---|---|
| October 2026 | 2% | 82 of 3,973 sites |

Chart: https://agentdrives.com/research/adoption/openapi.svg?via=md

## 402 payment route

API calls we made that answered 402 Payment Required.

| Month | Share | Count |
|---|---|---|
| October 2026 | 0% | 0 of 57 API calls |

Chart: https://agentdrives.com/research/adoption/402.svg?via=md

## Bot wall at the home page

Sites whose home page stopped our agent with a bot check or a refusal.

| Month | Share | Count |
|---|---|---|
| October 2026 | 12% | 602 of 5,000 sites |

Chart: https://agentdrives.com/research/adoption/bot-wall.svg?via=md