# AX Check: lwn.net Checked 2026-09-18. LWN.net offers no agent-readable docs, but pricing is findable No Markdown or compact guide exists and llms.txt is missing (404), so agents get only raw HTML with no documentation index. ## End-to-end onboarding not demonstrated ## Coding sessions All three independent sessions completed and found subscription pricing on LWN's site, landing on figures between about $8 and $11 per month with differing tier assumptions (prepay discounts, individual vs. group plans), despite no dedicated pricing page being fetched. ### DeepSeek V4 Pro [View public run](https://agents.withgauge.com/p/runs/a86e331b-df15-40c6-826c-1cb3ecad4911) · [Read transcript](https://www.ax-check.com/lwn.net/sessions/deepseek.json) seq 41 gives $11.00/month at the 'professional hacker' tier with named assumptions (10% prepay-10-months discount, tier variation, group vs individual subscriptions, no per-call API metering). #### End-to-end onboarding - **End-to-end onboarding not demonstrated**: No credentials of any kind were obtained or used. The agent explicitly avoided login/subscription and only fetched a public, unauthenticated RSS feed. Since LWN.net's only 'developer workflow' is public RSS (no API/SDK), there was no authenticated operation to perform, and none was attempted. Event 48: ```text - Looking forward to Git 2.56 — and 3.0 https://lwn.net/Articles/1094575/ corbet Fri, 18 Sep 2026 14:14:09 +0000 ``` Event 39: ```text You must be logged in (and subscribed) to obtain a URL for the full-text feeds. Please log in to LWN to continue. ``` #### Hallucinated URLs None identified in this transcript. #### Blockers - **Full-text and subscriber feeds require paid login**: Product behavior, not agent error: LWN.net gates full-text RSS feeds and the Kernel Source Database behind a paid subscription plus login. The agent correctly identified this as a normal product boundary rather than a technical fault and did not attempt to bypass it, instead scoping the example to the public headline feed. Event 39: ```text You must be logged in (and subscribed) to obtain a URL for the full-text feeds. Please log in to LWN to continue. ``` Event 18: ```text An LWN subscription at the "professional hacker" level costs US$11.00 per month , with a 10% discount for prepaid subscriptions of at least ten months. ``` - **No SDK or API exists for LWN.net**: Product limitation, not agent error: the site has no REST API or SDK. The only programmatic surface is public RSS syndication. The agent surfaced this plainly per the task instructions rather than forcing a workaround. Event 50: ```text LWN.net has no SDK and no API.** I did not find a developer workflow beyond its public RSS feeds. ``` #### Suggested Changes - **Publish an explicit API/developer-workflow statement on the syndication page**: The Syndication page (https://lwn.net/headlines/) currently only documents RSS feeds and subscriber gating, leaving developers to infer that no API/SDK exists. Add a short line on that page (or the FAQ) stating plainly there is no REST API/SDK beyond RSS, so integrators do not spend time searching for one. Verify by checking that a first-time reader of /headlines/ can determine API availability without external searching. Event 39: ```text The full LWN RSS feed can be found at https://lwn.net/headlines/rss . It includes all articles that find their way to the LWN front page. ``` ### Kimi K3 [View public run](https://agents.withgauge.com/p/runs/d9b2c486-ef42-4848-891a-cc00b0e7cab4) · [Read transcript](https://www.ax-check.com/lwn.net/sessions/kimi.json) Final output gives '~$8/month' for the individual 'Project Leader'-tier subscription, flags it as historical/approximate, and distinguishes individual vs. group/site tiers (seq 8). #### End-to-end onboarding - **End-to-end onboarding not demonstrated**: The agent never attempted to obtain credentials or perform an authenticated operation. It made a single unauthenticated HTTP HEAD/GET request to the public homepage, concluded LWN.net has no API, SDK, or developer accounts, and stopped per the user's instruction to halt if there's no actionable developer workflow. Event 3: ```text curl -sI --max-time 10 https://lwn.net | head -20; echo "---"; curl -s --max-time 10 https://lwn.net/ | grep -i -m5 -E "api|developer" ``` Event 8: ```text This product has no developer workflow I can act on — so I'll say so plainly and stop. ``` #### Hallucinated URLs None identified in this transcript. #### Blockers - **No public API or SDK exists for LWN.net**: This is a product/scope limitation rather than an agent error or credential gap: LWN.net is a news website with no programmable developer surface (no API, SDK, or developer accounts), so there was nothing for the agent to build against. The agent correctly identified this via a quick homepage check and stopped as instructed. Event 8: ```text ❌ No public API - ❌ No SDK or client libraries - ❌ No developer accounts, API keys, webhooks, or programmable surface ``` #### Suggested Changes None identified in this transcript. ### Qwen 3.8 Max [View public run](https://agents.withgauge.com/p/runs/1d26d86b-a9e8-498a-a46c-991597d6440d) · [Read transcript](https://www.ax-check.com/lwn.net/sessions/qwen.json) Final output (seq 66) states $11/month with 10% prepay discount, gift-subscription terms, and free-tier/RSS access, sourced explicitly from 'LWN's subscribe page' — naming the plan structure behind the figure. #### End-to-end onboarding - **End-to-end onboarding not demonstrated**: LWN.net has no SDK or API; the agent used only the public, unauthenticated RSS feed and public web pages. No credentials were obtained or used, and no authenticated operation was performed against the product, so onboarding was never attempted rather than blocked. Event 55: ```text LWN.net ``` Event 64: ```text - Looking forward to Git 2.56 — and 3.0 [subscribers] by corbet | Fri, 18 Sep 2026 14:14:09 +0000 https://lwn.net/Articles/1094575/ ``` #### Hallucinated URLs - **Guessed capitalized Subscribe path returned 404**: The agent tried https://lwn.net/Subscribe/ and https://lwn.net/Subscribe (capitalized) before finding the real lowercase path via the homepage links. These guessed URLs returned 404, and the agent then discovered the correct working path from the homepage's actual href attributes, so this reflects a guessed URL that failed, then self-corrected. Event 23: ```text 404 - Not Found [LWN.net] ``` Event 34: ```text --- 404 ``` Event 39: ```text href="/subscribe/" href="/subscribe/Info" ``` #### Blockers None identified in this transcript. #### Suggested Changes None identified in this transcript. ### Task given to each agent Help me build a simple example using LWN.net. Tell me how pricing works, and briefly tell me whether this product will be easy for you to manage. Let me know if you get blocked. If this product has no developer workflow you can act on, say so plainly and stop. Stay light: use the hosted product through its SDK or API. Do not start local service stacks or wait for long-running commands; if the quickstart requires either, say so plainly and stop. No product credentials were supplied and no purchases were authorized. ## Score: F · 0/100 (provisional) Grades come from completed site checks. Coding sessions and skipped checks do not affect the score. ### Clarity - **Failed** — Homepage answers Markdown requests ```text Homepage returned text/html for a Markdown Accept header; no Markdown representation offered. ``` - **Failed** — llms.txt provides an actionable documentation index ```text https://lwn.net/llms.txt returns HTTP 404, so no documentation index exists. ``` - **Failed** — A compact guide representation exists ```text No compact guide representation: /llms.txt returns 404 and homepage serves only HTML. ``` - **Skipped** — llms.txt provides navigation guidance ```text No llms.txt body exists (404), so navigation guidance cannot be judged. ``` - **Skipped** — llms.txt mentions offered API, MCP, and skills ```text No llms.txt body exists (404); no API, MCP or skills surfaces were observed. ``` - **Skipped** — A focused guide is directly retrievable ```text No site-published Markdown guide fetched; only HTML homepage and a 404 llms.txt. ``` - **Skipped** — Equivalent instructions fit a token budget ```text No compact guide exists to measure against the token budget. ``` - **Skipped** — Product-docs links survive format changes ```text Homepage Markdown is unsupported, so link preservation across formats cannot be judged. ``` - **Skipped** — The compact guide is independently actionable ```text No compact agent guide was fetched; only the homepage and a 404 llms.txt were retrieved. ``` - **Skipped** — Install and next-step links resolve ```text No install or next-step links were sampled; only homepage navigation links were fetched. ``` ### Onboarding - **Skipped** — Docs lead to a relevant quickstart ```text No docs or quickstart pages were fetched; only a 404 llms.txt exists. ``` - **Skipped** — Installation commands are extractable ```text No installation or CLI guide was fetched for LWN.net. ``` - **Skipped** — Code examples are available without interaction ```text No documentation or code example pages were fetched. ``` - **Skipped** — Prerequisites and auth boundaries are explicit ```text No API or auth documentation was fetched for LWN.net. ``` ### Pricing - **Skipped** — Pricing is readable without interaction ```text No pricing page was fetched; only the homepage, which mentions subscribing without prices. ``` - **Skipped** — Prices are stated, not gated ```text No pricing page was fetched; homepage only links to a subscribe page with no stated prices. ``` - **Skipped** — Pricing units and limits are explicit ```text No pricing page was fetched, so units and limits for any plan are unknown. ``` - **Pass** — Agents identify pricing and its assumptions ```text 3 of 3 sessions were judged on pricing; 0 fell short. DeepSeek V4 Pro: seq 41 gives $11.00/month at the 'professional hacker' tier with named assumptions (10% prepay-10-months discount, tier variation, group vs individual subscriptions, no per-call API metering). Kimi K3: Final output gives '~$8/month' for the individual 'Project Leader'-tier subscription, flags it as historical/approximate, and distinguishes individual vs. group/site tiers (seq 8). Qwen 3.8 Max: Final output (seq 66) states $11/month with 10% prepay discount, gift-subscription terms, and free-tier/RSS access, sourced explicitly from 'LWN's subscribe page' — naming the plan structure behind the figure. This behavioural item does not affect the fast grade. ``` ### Activation - **Skipped** — An API reference or OpenAPI spec is reachable ```text No API reference or OpenAPI spec was fetched for LWN.net. ``` - **Skipped** — An MCP server is documented and well-formed ```text No MCP server documentation was fetched for LWN.net. ``` - **Skipped** — A CLI install path is documented ```text No CLI install path was fetched for LWN.net. ``` - **Skipped** — SDK packages resolve on their registries ```text No SDK package registry lookup was fetched for LWN.net. ``` - **Skipped** — Agent skills are published ```text No agent skills documentation was fetched for LWN.net. ``` [Full report data](https://www.ax-check.com/lwn.net/report.json)