Anthropic

api_absent

Register tools on page load with document.modelContext or supported declarative forms.

0 tools registered

Expose the discovery surface without requiring an undocumented user action.

0/0 snake_case names

Use concise snake_case names that describe the action.

0/0 descriptive tools

Explain when to use each tool and what it returns or changes.

0/0 schemas

Define bounded, typed inputs so agents do not guess.

No sensitive actions inferred

Mark destructive or commitment-bearing tools so hosts can require confirmation.

No JSON-LD

Describe the real organization, product, service, or article with source-grounded JSON-LD.

Found: pricing, security, use case

Answer concrete questions about fit, pricing, integrations, security, comparisons, and limitations where applicable.

106 outbound references

Link claims, identity profiles, policies, and primary sources where they help verification.

15 identity, contact, or policy links detected

Link the responsible organization, author, contact, and relevant policies.

5527 readable characters in HTTP 200 response

Render the core facts in the initial HTML.

5 HTML lists, tables, or definition lists

Use semantic lists or tables when they clarify comparisons and factual details.

0 question-oriented headings; structured answers absent

Use direct headings and concrete answers for questions your audience actually asks.

5 paragraphs contain 80–500 characters

Write self-contained passages with enough context to stand alone.

Cost or access language detected

Explain whether access is free, paid, restricted, or requires contacting the team.

No requirements or limitation language detected

State important constraints so an answer can describe both fit and limitations.

No readable root Markdown alternate; HTML remains sufficient

Markdown can help extraction but is optional and does not establish citations.

HTTP 200 · text/html; charset=utf-8

Home \ Anthropic

Use a concise, specific title of roughly 15–70 characters.

Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.

Summarize the page in one specific sentence.

https://www.anthropic.com/

Publish one absolute canonical URL.

,

Remove noindex from public acquisition pages.

1 H1 · 1 hierarchy jumps

Use one descriptive H1 and avoid skipped heading levels.

5527 readable characters

Render the core explanation in the initial HTML.

535 entries · 535 with lastmod

Publish a valid sitemap or sitemap index at /sitemap.xml.

Googlebot is allowed at this URL

Keep public search pages crawlable through robots.txt.

https:

Serve canonical pages over HTTPS.

text/html; charset=utf-8

Serve this page with an HTML content type.

Sampled missing path returned HTTP 404

Return HTTP 404 or 410 for genuinely missing pages.

width=device-width, initial-scale=1

Declare a responsive viewport and verify the rendered mobile layout.

4/4 search crawlers allowed by robots.txt

Allow search crawlers on public pages intentionally; use training controls separately.

robots.txt unavailable

Publish a stable robots.txt even when wildcard access is allowed.

4/4 received usable responses

Check CDN, bot protection, rate limits, and application challenges for blocked agents.

1 distinct response bodies across 4 successful agents

Serve equivalent public facts to agents and people; investigate intentional differences.

HTTP 200 · text/html; charset=utf-8

Return a successful public HTML response from the canonical origin.

robots.txt fetched and evaluated

Publish a clear robots.txt policy for useful public pages.

535 discovered URLs

Publish a same-origin sitemap containing canonical public URLs.

Probe returned HTTP 404

Return HTTP 404 for an unknown public path.

230 public links in initial HTML

Use ordinary anchors for primary facts and actions.

text/html; charset=utf-8 · 204594 bytes

Serve bounded HTML with a declared content type.

5201 readable characters

Render primary product facts, navigation, and action context in initial HTML.

1 H1 · 28 headings

Use one descriptive H1 plus main and navigation landmarks.

text/html; charset=utf-8 · lang=en

Declare the HTML content type and document language.

Not found

Offer a same-origin Markdown alternate for content-heavy workflows.

Not found

Publish concise llms.txt navigation to canonical facts and capabilities.

0/4 pricing/docs/security/status/support pages found

Give current product facts stable, linked URLs.

Home \ Anthropic · AI research and products that put safety at the frontier

State the canonical product name, audience, and job in visible text.

No JSON-LD types

Publish valid source-grounded entity data.

Pricing and availability language inspected

Expose current pricing, limits, availability, and eligibility.

https://www.anthropic.com

Use canonical URLs and stable identifiers for public entities.

Checked public fact surfaces for support, status, authorship, and dates

Publish ownership, support/status routes, and updated dates for time-sensitive facts.

No action language · 21 controls

Document one safe public action with a clear success state.

Public contract language or OpenAPI found

Document inputs, authentication, outputs, errors, and retries.

Not found

Publish a valid OpenAPI document when a public API exists.

No developer profile

Publish standard auth metadata, or explicitly document that the API is public and keyless.

No capability manifest

Expose a real MCP, skill, WebMCP, or equivalent capability when useful.

No developer profile

Document setup, a verification command, and removal.

Checkout/commitment language inspected

Require confirmation before payment, publication, deletion, or commitment.

Completion language inspected

Return or display an unambiguous success state.

Receipt and result surfaces inspected

Provide a stable receipt, result URL, status resource, or identifier.

Support/status language inspected

Link stable support and status surfaces.

Public result identifiers inspected

Return a stable request, receipt, order, or trace identifier.