---
title: "Waymark report for langchain.com"
canonical: "https://waymark.genedai.me/score/langchain.com"
last-updated: "2026-08-24T02:21:25.348Z"
---

# Waymark report for langchain.com

Waymark scored langchain.com 56.6/100 (C) on 24 Aug 2026.
Score: 56.6/100 — Blockers remain
Scanned: 2026-08-24T02:21:25.348Z
Canonical report: https://waymark.genedai.me/score/langchain.com

## Layer breakdown

- Discovery: 8/20 (6 of 17 eligible checks passed)
- Access: 15.9/30 (9 of 20 eligible checks passed)
- Usability: 27.1/40 (7 of 12 eligible checks passed)
- Payments: N/A (excluded from the denominator)

## Findings

### 1. robots.txt present

- Layer: discovery
- Result: partial
- Evidence: robots.txt status 200.
- Recommended fix: Publish /robots.txt with User-agent rules and a Sitemap line.

### 2. llms.txt

- Layer: discovery
- Result: failed
- Evidence: llms.txt status 404.
- Recommended fix: Add /llms.txt describing the site for language models.

### 3. AGENTS.md

- Layer: discovery
- Result: failed
- Evidence: agents.md status 404.
- Recommended fix: Publish /agents.md with agent-oriented usage notes.

### 4. Well-known AI catalog

- Layer: discovery
- Result: failed
- Evidence: No ai-plugin.json or ai-catalog.json.
- Recommended fix: Add /.well-known/ai-plugin.json or /.well-known/ai-catalog.json.

### 5. JSON-LD structured data

- Layer: access
- Result: failed
- Evidence: No JSON-LD on the homepage.
- Recommended fix: Add JSON-LD (Organization, WebSite, or SoftwareApplication).

### 6. OpenAPI / Swagger link

- Layer: access
- Result: failed
- Evidence: No OpenAPI/Swagger link in HTML.
- Recommended fix: Link to an OpenAPI or Swagger document from the homepage.

### 7. RSS or Atom feed

- Layer: access
- Result: failed
- Evidence: No RSS/Atom link.
- Recommended fix: Expose an RSS or Atom feed for machine subscribers.

### 8. CORS / API hint

- Layer: access
- Result: partial
- Evidence: No CORS header or obvious API path.
- Recommended fix: If you expose an API, send Access-Control-Allow-Origin for intended clients.

### 9. OAuth / OIDC well-known

- Layer: access
- Result: failed
- Evidence: No oauth-authorization-server or openid-configuration.
- Recommended fix: Publish /.well-known/openid-configuration or oauth-authorization-server if you authenticate agents.

### 10. robots.txt AI policy

- Layer: discovery
- Result: failed
- Evidence: No robots.txt.
- Recommended fix: Name GPTBot, ClaudeBot, Google-Extended, PerplexityBot and state allow or deny.

### 11. llms.txt index

- Layer: discovery
- Result: failed
- Evidence: Missing /llms.txt.
- Recommended fix: Add a markdown index at /llms.txt.

### 12. llms-full.txt

- Layer: discovery
- Result: failed
- Evidence: llms-full.txt status 404.
- Recommended fix: Optionally publish /llms-full.txt for one-shot ingest.

### 13. HTTP Link header

- Layer: discovery
- Result: failed
- Evidence: No rel=sitemap|describedby|api-catalog|alternate on homepage.
- Recommended fix: Send RFC 8288 Link headers for related machine resources.

### 14. JSON-LD entities

- Layer: access
- Result: failed
- Evidence: No JSON-LD.
- Recommended fix: Embed Organization, Product, Offer, SoftwareApplication, or FAQPage.

### 15. Markdown negotiation

- Layer: access
- Result: failed
- Evidence: Homepage did not negotiate markdown.
- Recommended fix: Respond to Accept: text/markdown with a markdown body.

### 16. /index.md fallback

- Layer: access
- Result: failed
- Evidence: index.md status 404.
- Recommended fix: Serve a markdown homepage at /index.md.

### 17. MCP Apps UI hint

- Layer: usability
- Result: failed
- Evidence: No MCP Apps hint (N/A unless you return UI).
- Recommended fix: If you return UI, declare io.modelcontextprotocol/ui resources.

### 18. ai-plugin.json

- Layer: discovery
- Result: failed
- Evidence: No /.well-known/ai-plugin.json.
- Recommended fix: Optionally publish a plugin-style capability manifest.

### 19. security.txt

- Layer: access
- Result: failed
- Evidence: No /.well-known/security.txt Contact.
- Recommended fix: Publish /.well-known/security.txt with a Contact field.

### 20. change-password well-known

- Layer: access
- Result: failed
- Evidence: Login surface without /.well-known/change-password.
- Recommended fix: If users have passwords, serve /.well-known/change-password.

### 21. llms.txt size and links

- Layer: discovery
- Result: failed
- Evidence: No llms.txt to score.
- Recommended fix: Keep /llms.txt over ~200 characters with absolute URLs to docs.

### 22. Rate limit signal

- Layer: usability
- Result: partial
- Evidence: API surface without a rate-limit signal.
- Recommended fix: Document or send rate-limit headers on APIs.

### 23. Idempotency signal

- Layer: usability
- Result: partial
- Evidence: API surface without idempotency notes.
- Recommended fix: Document idempotency keys for mutating calls.

### 24. Machine-readable errors

- Layer: usability
- Result: partial
- Evidence: API surface without a JSON error shape.
- Recommended fix: Return a JSON or problem+json error body.

### 25. OpenAPI document

- Layer: access
- Result: failed
- Evidence: OpenAPI probe.
- Recommended fix: Publish an OpenAPI document at a stable URL.

### 26. CLI tool

- Layer: usability
- Result: failed
- Evidence: No CLI mention.
- Recommended fix: Publish an official CLI.

### 27. Package homepage match

- Layer: discovery
- Result: failed
- Evidence: No npm package homepage matching langchain.com.
- Recommended fix: Publish an official package whose homepage is this domain.

## Interpretation

Public technical snapshot; not a guarantee of task completion. Private and authenticated workflows are outside this scan. Cite scanned_at and the canonical report URL; the URL serves the latest completed snapshot and can change after a rescan.

The official Waymark score is Discovery 20 / Access 30 / Usability 40 / Payments 10. N/A and scanner-error checks drop out of the denominator; they are not scored as failures. An observed agent journey is supporting evidence and does not change the numeric score.