# Phoenix Arize

[phoenix.arize.com](https://phoenix.arize.com)

- **Overall score:** 74/100 (Grade C)
- **Checks passed:** 8 / 29
- **Last computed:** 2026-05-12

## Components

### Content Discoverability

- **Score:** 87/100 · **Status:** partial
- **Summary:** 4 warnings and 1 skipped across 6 AFDocs checks.
- **Rationale:** Agents need a clear entry point and crawl map before they can reliably discover the right pages.
- **Reference:** [AFDocs reference](https://afdocs.dev)

**Checks**

- ✅ **LLMS TXT Exists** — llms.txt found at 2 location(s)
- ⚠️ **LLMS TXT Valid** — llms.txt contains parseable links but doesn't fully follow the proposed structure: https://phoenix.arize.com/llms.txt: No blockquote summary found; https://phoenix.arize.com/docs/llms.txt: No blockquote summary found Your llms.txt contains parseable links but doesn't follow the standard structure. Add an H1 title as the first line and a blockquote summary (lines starting with >) to improve agent parsing.
- ⚠️ **LLMS TXT Size** — llms.txt is 78,236 characters (between 50,000 and 100,000; consider splitting) Your llms.txt is 78,236 characters, which may be truncated on some agent platforms. If it grows further, split into nested llms.txt files with a root index under 50,000 characters.
- ⚠️ **LLMS TXT Links Resolve** — All links are external; 10/15 resolve (5 failed; may be bot-detection or rate-limiting) 5 of 15 links in your llms.txt return errors. Audit and fix or remove broken URLs to prevent agents from hitting dead ends.
- ⏭️ **LLMS TXT Links Markdown** — All 170 links are external; cannot assess markdown support
- ⚠️ **LLMS TXT Directive** — llms.txt directive found in 1 of 1 pages, but buried deep in the page (past 50%) An llms.txt directive was found on some pages but is missing from others, or is buried deep in the page. Ensure the directive appears near the top of every documentation page.

### Markdown Availability

- **Score:** 0/100 · **Status:** fail
- **Summary:** 2 failed across 2 AFDocs checks.
- **Rationale:** When markdown is available directly, agents spend less effort stripping presentation markup and guessing structure.
- **Reference:** [AFDocs reference](https://afdocs.dev)

**Checks**

- ❌ **Markdown Url Support** — No pages support .md URLs (0/1 tested) Your pages don't return markdown when .md is appended to the URL. Configure your docs platform to serve .md variants for all documentation pages.
- ❌ **Content Negotiation** — Server ignores Accept: text/markdown header (0/1 pages return markdown) Your server ignores Accept: text/markdown and returns HTML. Some agents (Claude Code, Cursor, OpenCode) request markdown this way. Configure your server to honor content negotiation.

### Page Size and Truncation Risk

- **Score:** 64/100 · **Status:** fail
- **Summary:** 1 failed, 1 warning, and 1 skipped across 4 AFDocs checks.
- **Rationale:** Large pages and delayed primary content increase truncation risk and make retrieval less reliable.
- **Reference:** [AFDocs reference](https://afdocs.dev)

**Checks**

- ✅ **Rendering Strategy** — All 1 pages contain server-rendered content
- ⏭️ **Page Size Markdown** — Skipped: dependency check did not pass
- ⚠️ **Page Size Html** — 1 of 1 pages convert to 50K–100K chars (max 74K, 77% boilerplate) 1 of 1 pages convert to 50K-100K characters of markdown. These may be truncated on some agent platforms.
- ❌ **Content Start Position** — 1 of 1 pages have content starting past 50% (worst 53%) 1 of 1 pages have content starting past 50% of the converted output. Agents may never see the documentation content. Move or remove inline CSS/JS that precedes the content area.

### Content Structure

- **Score:** 100/100 · **Status:** pass
- **Summary:** 3 AFDocs checks pass.
- **Rationale:** Predictable sections, valid code fences, and serialized tabs make the content easier for agents to parse correctly.
- **Reference:** [AFDocs reference](https://afdocs.dev)

**Checks**

- ✅ **Tabbed Content Serialization** — No tabbed content detected across 1 pages
- ✅ **Section Header Quality** — No tabbed content found; header quality check not applicable
- ✅ **Markdown Code Fence Validity** — All 0 code fences properly closed across 2 pages

### URL Stability and Redirects

- **Score:** 85/100 · **Status:** partial
- **Summary:** 1 warning across 2 AFDocs checks.
- **Rationale:** Stable URLs and sane redirect behavior prevent retrieval drift and broken tool references.
- **Reference:** [AFDocs reference](https://afdocs.dev)

**Checks**

- ✅ **Http Status Codes** — All 1 pages return proper error codes for bad URLs
- ⚠️ **Redirect Behavior** — 1 of 1 pages use cross-host redirects 1 pages use cross-host HTTP redirects, which some agents don't follow. Where possible, use same-host redirects or update URLs to point directly to the final destination.

### Observability and Content Health

- **Score:** 100/100 · **Status:** partial
- **Summary:** 2 skipped across 3 AFDocs checks.
- **Rationale:** Coverage, parity, and cache behavior determine whether agents can trust the content they retrieve.
- **Reference:** [AFDocs reference](https://afdocs.dev)

**Checks**

- ⏭️ **LLMS TXT Freshness** — No page URLs found in llms.txt
- ⏭️ **Markdown Content Parity** — Skipped: dependency check did not pass
- ✅ **Cache Header Hygiene** — All 3 endpoints have appropriate cache headers

### Authentication and Access

- **Score:** 100/100 · **Status:** partial
- **Summary:** 1 skipped across 2 AFDocs checks.
- **Rationale:** Agents need either public access or a clear alternative path when documentation is gated behind auth.
- **Reference:** [AFDocs reference](https://afdocs.dev)

**Checks**

- ✅ **Auth Gate Detection** — All 1 pages are publicly accessible
- ⏭️ **Auth Alternative Access** — All docs pages are publicly accessible; no alternative access paths needed

### Full Content Discoverability

- **Score:** 0/100 · **Status:** fail
- **Summary:** llms-full.txt has 1 failing check.
- **Rationale:** A full-document snapshot gives long-context agents a single canonical corpus to ingest without repeated crawling.
- **Reference:** [llms-full.txt guide](https://www.mintlify.com/docs/ai/llmstxt#llms-full-txt)

**Checks**

- ❌ **LLMS Full Exists** — No llms-full.txt file was discovered.
- ⏭️ **LLMS Full Size** — Skipped because llms-full.txt was not found.
- ⏭️ **LLMS Full Valid** — Skipped because llms-full.txt was not found.
- ⏭️ **LLMS Full Links Resolve** — Skipped because llms-full.txt was not found.

### Agent Skills

- **Score:** 0/100 · **Status:** fail
- **Summary:** skill.md has 1 failing check.
- **Rationale:** Agent skills provide product-specific operating guidance that plain documentation pages do not encode on their own.
- **Reference:** [skill.md guide](https://www.mintlify.com/docs/ai/skillmd)

**Checks**

- ❌ **Skill MD** — No agent skill definition was discovered.

### MCP Server

- **Score:** 0/100 · **Status:** fail
- **Summary:** MCP has 1 failing check.
- **Rationale:** A discoverable MCP server lets agents use first-class tools instead of scraping pages and inferring behavior.
- **Reference:** [MCP guide](https://www.mintlify.com/docs/ai/model-context-protocol)

**Checks**

- ❌ **MCP Server Discoverable** — No MCP server was discovered at the expected endpoints.
- ⏭️ **MCP Tool Count** — Skipped because the MCP server was not discoverable.