buildwithfern.com llms.txt
In short
buildwithfern.com serves a 4.7 KB llms.txt with 2 H2 sections and 45 links, graded A on the llmstxt.org structure (6 of 6 checks). It passes every check. The home page links the file. No llms-full.txt was found. Read 4 November 2026.
llms.txt 4.7 KB, 58 lines
# Fern Documentation
> Build better developer experiences. Generate SDKs in TypeScript, Python, Go, Java, C#, PHP, Ruby, Swift & Rust. Create interactive API docs with AI search.
## Instructions for AI Agents
- For clean Markdown of any page, append `.md` to the page URL
- For section-specific indexes, append `/llms.txt` to any section URL
- For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://buildwithfern.com/learn/_mcp/server
## Products
- [Home](https://buildwithfern.com/learn/home/llms.txt): Products that […] your developer experience
- [Home](https://buildwithfern.com/learn/home.md)
- [SDKs](https://buildwithfern.com/learn/sdks/llms.txt): Generate client libraries in multiple languages
- [Introduction](https://buildwithfern.com/learn/sdks/current/overview/introduction.md)
- [How it works](https://buildwithfern.com/learn/sdks/current/overview/how-it-works.md)
- [Quickstart](https://buildwithfern.com/learn/sdks/current/overview/quickstart.md)
- [Project structure](https://buildwithfern.com/learn/sdks/current/overview/project-structure.md)
- [Adding custom code](https://buildwithfern.com/learn/sdks/current/overview/custom-code.md)
- [CLI Generator](https://buildwithfern.com/learn/cli-generator/llms.txt): Generate a CLI from your API definition
- [Overview](https://buildwithfern.com/learn/cli-generator/get-started/overview.md)
- [Quickstart](https://buildwithfern.com/learn/cli-generator/get-started/quickstart.md)
- [Features](https://buildwithfern.com/learn/cli-generator/get-started/features.md)
- [Authentication](https://buildwithfern.com/learn/cli-generator/get-started/authentication.md)
- [OpenAPI extensions](https://buildwithfern.com/learn/cli-generator/get-started/openapi-extensions.md)
- [MCP Generator](https://buildwithfern.com/learn/mcp-generator/llms.txt): Generate and host an MCP server from your API definition
- [Quickstart](https://buildwithfern.com/learn/mcp-generator/get-started/quickstart.md)
- [Manage in the dashboard](https://buildwithfern.com/learn/mcp-generator/get-started/manage.md)
- [Docs](https://buildwithfern.com/learn/docs/llms.txt): Generate beautiful, interactive documentation websites
- [Capabilities](https://buildwithfern.com/learn/docs/getting-started/capabilities.md)
- [How it works](https://buildwithfern.com/learn/docs/getting-started/how-it-works.md)
- [Quickstart](https://buildwithfern.com/learn/docs/getting-started/quickstart.md)
- [Project structure](https://buildwithfern.com/learn/docs/getting-started/project-structure.md)
- [October 30, 2026](https://buildwithfern.com/learn/docs/changelog/2026/10/30.md)
- [Dashboard](https://buildwithfern.com/learn/dashboard/llms.txt): Manage your Fern projects and settings
- [Overview](https://buildwithfern.com/learn/dashboard/getting-started/overview.md)
- [Member permissions](https://buildwithfern.com/learn/dashboard/configuration/permissions.md)
- [API keys](https://buildwithfern.com/learn/dashboard/configuration/api-keys.md)
- [Connect a Git repository](https://buildwithfern.com/learn/dashboard/configuration/github-repo.md)
- [Set up SSO](https://buildwithfern.com/learn/dashboard/configuration/sso.md)
- [Fern CLI](https://buildwithfern.com/learn/cli-api-reference/llms.txt): Manage and configure your Fern projects
- [Get started with Fern CLI](https://buildwithfern.com/learn/cli-api-reference/cli-reference/overview.md)
- [Global options](https://buildwithfern.com/learn/cli-api-reference/cli-reference/options.md)
- [General commands](https://buildwithfern.com/learn/cli-api-reference/cli-reference/general-commands.md)
- [Docs commands](https://buildwithfern.com/learn/cli-api-reference/cli-reference/docs-commands.md)
- [SDK commands](https://buildwithfern.com/learn/cli-api-reference/cli-reference/sdk-commands.md)
- [API Definitions](https://buildwithfern.com/learn/api-definitions/llms.txt): Import and configure your API specifications
- [What is an API definition?](https://buildwithfern.com/learn/api-definitions/overview/what-is-an-api-definition.md)
- [Project structure](https://buildwithfern.com/learn/api-definitions/overview/project-structure.md)
- [Overview](https://buildwithfern.com/learn/api-definitions/openapi/overview.md)
- [Overlays](https://buildwithfern.com/learn/api-definitions/openapi/overlays.md)
- [Overrides](https://buildwithfern.com/learn/api-definitions/openapi/overrides.md)
- [OpenAPI](/learn/api-definitions/openapi/overview/llms.txt): Define REST and webhook APIs
- [AsyncAPI](/learn/api-definitions/asyncapi/overview/llms.txt): Define event-driven and WebSocket APIs
- [OpenRPC](/learn/api-definitions/openrpc/overview/llms.txt): Define JSON-RPC APIs
- [gRPC](/learn/api-definitions/grpc/overview/llms.txt): Define APIs with Protocol Buffers
First 57 of 58 lines. 1 span shown as […] because the words or characters in them are rejected by this site's own style rules; the live file has them.
Parse graded A, 6 of 6
file: https://buildwithfern.com/learn/llms.txt
Fern Documentation
Build better developer experiences. Generate SDKs in TypeScript, Python, Go, Java, C#, PHP, Ruby, Swift & Rust. Create interactive API docs with AI search.
2 sections, 45 links, no Optional section.
Ora's cached score: 72, grade B, scanned 4 November 2026.
The parse
buildwithfern.com lists 45 links: 45 point at buildwithfern.com or a relative path, 0 point elsewhere. The hosts it links most: buildwithfern.com (41).
| H2 section | Links |
|---|---|
| Instructions for AI Agents | 0 |
| Products | 45 |
Grade against the llmstxt.org structure
The file passes all six checks. The grade is the count of passed checks: six is A, five is B, four is C, three is D, fewer is F. It measures structure only. Whether any agent reads the file is a separate question, covered on the llms.txt reference.
| Check | Result | Detail |
|---|---|---|
| Starts with an H1 naming the site or project | Pass | H1: Fern Documentation |
| Has a blockquote summary under the H1 | Pass | Blockquote summary found. |
| Has at least one H2 section that lists links | Pass | 2 H2 sections, 1 with links. |
| At least 80 percent of links point at the same site | Pass | 45 of 45 links stay on buildwithfern.com (100 percent). |
| Under 100 KB | Pass | 4832 bytes as served. |
| Plain markdown, no HTML | Pass | No HTML document markers in the body. |
Ora's cached score
Ora's cached report for buildwithfern.com gives it 72 of 100, grade B, scanned on 4 November 2026. Its Access layer, which holds the read-layer checks below, scored 43 of 62 check points. Read from GET ora.ai/api/score/buildwithfern.com on 5 November 2026. The score is Ora's, not this site's, and the structure grade above is a different measure: it grades the llms.txt file against the llmstxt.org proposal, while Ora's score covers the whole site. Ora's report for buildwithfern.com has every layer.
| Ora check (Access layer) | Result | Points |
|---|---|---|
| Sitemap exists | Pass | 2 of 2 |
| Content without JavaScript | Fail | 0 of 3 |
| Not blocked by bot detection | Pass | 2 of 2 |
| Markdown URL fallback | Pass | 2 of 2 |
| llms.txt exists | Pass | 1 of 1 |
| llms.txt formatting | Partial | 1 of 2 |
| JSON-LD structured data | Fail | 0 of 4 |
| Metadata completeness | Partial | 1 of 2 |
| llms.txt links resolve | Pass | 2 of 2 |
| Markdown alternate link | Pass | 1 of 1 |
| Redirect hygiene | Pass | 1 of 1 |
| Page token budget | Pass | 1 of 1 |
| Code fence validity | Pass | 1 of 1 |
| Content behind auth | Pass | 2 of 2 |
| OpenAPI spec published | Pass | 7 of 7 |
| Markdown agent docs | Pass | 1 of 1 |
| Markdown negotiation with Vary | Fail | 0 of 1 |
| Markdown for agent user agents | Fail | 0 of 1 |
| Agent crawler reachability | Pass | 2 of 2 |
Linking and the companion file
The home page of buildwithfern.com links the file in its HTML. Ora's lab found (2026-10-19) that 86 percent of llms.txt fetches by agents arrived through a link, so an unlinked file is mostly a file nobody opens. No llms-full.txt was found at the same root.
How it compares
At 4.7 KB the file is larger than 31 percent of the 2,529 plain-text llms.txt files in this edition, and its 45 links put it ahead of 57 percent of them on link count. The home page declares no generator. Size bucket: 2 to 10 KB. Curated example. Category: Docs platform.
Why it is in the index: Generated per navigation node; this is the docs root. Owner as listed: Fern.
Live file: https://buildwithfern.com/learn/llms.txt. Read 4 November 2026. If the file has since changed or gone, the live URL is the authority; this page records what the crawl read on that date.
Sources
- buildwithfern.com llms.txt https://buildwithfern.com/learn/llms.txt, read 4 November 2026
- llms.txt proposal (llmstxt.org) https://llmstxt.org/, read 4 November 2026
- Tranco list 746WX (crawl universe) https://tranco-list.eu/list/746WX, read 4 November 2026
- Ora: AgentReady launch post (the 86 percent finding) https://ora.ai/blog/agentready-launch, read 4 November 2026
- Ora llms.txt (GET /api/score/{domain} looks up a cached score) https://ora.ai/llms.txt, read 5 November 2026
Last reviewed 5 November 2026