---
title: What an AI agent reads on History Of Vaccines · The Direct Index
url: https://directindex.org/r/historyofvaccines.org/agent-view?format=md
---

[The Direct Index](https://directindex.org/)
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 [Report](https://directindex.org/r/historyofvaccines.org) · scanned 2026-10-24

# What an AI agent reads on History Of Vaccines

An assistant's crawler fetches the page once, without running JavaScript, and reads the text, the structured data and the links. Below is what it gets from [historyofvaccines.org](http://historyofvaccines.org/), taken from the copy the scanner kept.

918

characters of text without JavaScript

none

structured data for the business

0

of 3 AI crawlers turned away at the edge

 Text

## The words an agent gets

Title: none. First 918 of 918 characters:

```
Skip to contentOrganization MenuAdditional Organization Links Donate Shop Events RentalsSearch and ExploreSearchHomePrimary MenuVaccines 101DiseasesPioneersGetting VaccinatedEducational ResourcesBlogHomeHomePlay background videoA Living, Changing Chronicle of the Compelling History of Vaccination.Member of the World Health Organization’s Vaccine Safety Net. Featured ContentExplore Resources ForEducatorsExplore, a prolific vaccine developer.ExploreThe History of .HomeThe College of Physicians of Philadelphia 19 S 22nd Street Philadelphia, PA 19103215.563.3737 info@collegeofphysicians.orgFooter Social LinksInstagramFacebookBlueskyFooter Primary MenuVaccines 101DiseasesPioneersGetting VaccinatedEducational ResourcesBlogFooter About MenuOrganizational DirectoryOverviewDonateFooter Other LinksPress & MediaWork With UsFooter Legal LinksPrivacy PolicyTerms & Conditions© 2026 College of Physicians of Philadelphia
```

 Facts

## What it can say about the business

| A business type in JSON-LD | no |
| Name | no |
| Telephone | no |
| Address | no |
| Opening hours | no |
| Menu or price list | nothing |
| Cuisine in structured data | no |
| JSON-LD blocks | 0 |

 Actions

## The links it would act on

No booking or ordering link found. An agent has nothing to act on.

Everything here comes from fetching the homepage once as a crawler. The [report](https://directindex.org/r/historyofvaccines.org) turns it into a score and a list of fixes, with code to paste.

#### The Direct Index

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#### Use it

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#### Vendors and help

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#### For agents

[llms.txt](https://directindex.org/llms.txt)[llms-full.txt](https://directindex.org/llms-full.txt)[OpenAPI](https://directindex.org/openapi.json)[MCP server](https://directindex.org/.well-known/mcp/server-card.json)[A2A agent](https://directindex.org/.well-known/agent-card.json)[Direct feeds](https://directindex.org/direct.json)

#### Data

[Open data, CSV and JSON](https://directindex.org/data)[The quarterly edition](https://directindex.org/editions)[City data, JSON and Markdown](https://directindex.org/cities)[Sitemap](https://directindex.org/sitemap.xml)

Business listings come from OpenStreetMap contributors, under the ODbL. Scores are published under the same licence.

```json
{"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://directindex.org/#org","name":"The Direct Index","url":"https://directindex.org/","logo":"https://directindex.org/favicon.svg","email":"hello@directindex.org","founder":{"@type":"Person","@id":"https://directindex.org/#antonio","name":"Antonio Curado","sameAs":["https://x.com/ab_curado"]},"description":"Independent measurement of whether AI agents can find, read and act on a business's own website."},{"@type":"WebSite","@id":"https://directindex.org/#site","url":"https://directindex.org/","name":"The Direct Index","publisher":{"@id":"https://directindex.org/#org"},"inLanguage":"en","potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://directindex.org/scan?url={url}"},"query-input":"required name=url"}},{"@type":"WebAPI","name":"The Direct Index API","url":"https://directindex.org/openapi.json","documentation":"https://directindex.org/llms-full.txt","provider":{"@id":"https://directindex.org/#org"}}]}
```