Directory · Vertical AI: enterprise, legal, health, bio
Isomorphic Labs — what a crawler receives from isomorphiclabs.com
Website measurement, not a product review. This page records what machine clients received from isomorphiclabs.com. It does not evaluate Isomorphic Labs software, features, pricing or support.
Answer engines can technically reach this site, but get little they can use.
AI visibility 68/100, measured 2026-10-07 06:17 UTC from outside its network, as each named AI and search crawler and as a browser. An engine can technically reach this site and would struggle to get anything quotable out of it.
5
findings
✗
llms.txt on its host
✗
entity map on its host
5
scans on record since 2026-09-18
The three stages, in the order an engine hits a site
Each stage gates the next. An engine that cannot reach a page never reads it; one that cannot read it never quotes it. That is why reach is a ceiling and not just a weight.
Stage 1 · 40% of the score
Reach
Can a named answer-engine crawler get your pages at all?
At least one answer engine was refused, challenged or served less than a browser.
Stage 2 · 30% of the score
Read
Once it has the bytes, can it find the words?
The content is buried in markup, or the files that guide a crawler are missing.
Stage 3 · 30% of the score
Quote
Is there a specific fact it can state and attribute?
An assistant would have to paraphrase your page instead of quoting a fact.
- Structured data43
- Local presence & NAPn/a
- Claim consistencyn/a
- Authors & trust signals75
- Linked datan/a
- Quotable content33
- Entity corroborationn/a
- Page subjectn/a
The stage to fix first is quote, because the three run in order.
What to fix
5 findings on this site, 2 of them scored serious. Every one is named below; the top one is shown in full, free. What we saw, why each matters, how to fix it and the bytes behind it are what a licence buys — or we implement the whole list for you.
2 Medium 3 Note
1robots.txt declares no sitemapNo Sitemap: directive present.MediumSetting
What we saw
No Sitemap: directive present. /robots.txt
Why it matters
Adding one Sitemap: line lets crawlers enumerate the site instead of guessing at it.
How to fix it
Add a Sitemap: line to robots.txt pointing at the full sitemap URL, so crawlers find it without guessing.
Setting: a setting on the server, CDN, DNS or a plugin — no code and no writing
Why this was decided
| Rule | ROBOTS_NO_SITEMAP · rule pack sv28 · scope core |
|---|---|
| Evaluated | 2026-10-07 06:17:12 UTC |
| Decision | d1:49cec4cf77f1c3d799fa · finding f1:7632e0b36c244930eaa5 resolve either at /api/graph/<id> with a key |
| Observer | crawlcheck-worker build 9a18d6c8 · audit v4 |
What it rests on
| Identity | Status | Bytes | sha256 | Kept |
|---|---|---|---|---|
| read: /robots.txt | 200 | 0 | e3b0c44298fc | already_held |
23 more in the manifest.
Artifacts: manifest:80080c351e7a7b76322d46f978003d55185d68ec14652a3c9131f6a97741948a
Grade effect Caps the letter at C together with 1 other medium-severity finding; the letter rises only when all of them are gone. Moves no points.
Rule ROBOTS_NO_SITEMAP under scoring rules v28 · fingerprint ROBOTS_NO_SITEMAP|/robots.txt · persisting (5 scans)
Verify the fix Re-scan after the change. This finding is cleared when ROBOTS_NO_SITEMAP is no longer reported at /robots.txt; if it comes back after clearing, it is marked a regression, not a new finding.
ROBOTS_NO_SITEMAP · full transcript
Open the other 4
What we saw, why it matters, how to fix it, and the evidence bytes for every finding — on this report and every re-scan. From $29 a month.
Unlock the findingsOr have them fixed
We implement the list on your site and re-measure, with a sealed before and after. One site, $749 once.
Get this fixed — $749The main product
We fix the 5 findings on isomorphiclabs.com. $749, once.
2 of them are scored serious. One site. You keep the grade for free — this is the part where the list stops being a list.
- Every finding implemented on the site itself: machine files, schema, NAP, the lot
- An entity map authored for your business, not a template with the name swapped
- Measured again afterwards — the before and the after, sealed, so it is evidenced rather than claimed
- Thirty days of monitoring included
- Work starts within two business days
What it covers · one payment, nothing recurring
The chain a crawler follows
The chain breaks at robots.txt. Everything after that point is only reachable by a crawler guessing the conventional path.
A machine file that does not parse is worth less than one that is absent, because it looks present. Rows behind this.
Where the bytes go
Of the 66,074 decompressed bytes the homepage delivers, 3.9% is text a reader or a model can actually use. Most of what a crawler downloads here is not words.
- Readable text 3.9% · 2,560 B
- Markup & attributes 51% · 33,728 B
- Inline CSS 11.2% · 7,397 B
- Inline JavaScript 25.3% · 16,707 B
- Inline SVG 8.3% · 5,458 B
- HTML comments 0.3% · 224 B
The individual blocks that weigh the most, so the fix is a search rather than a hunt:
- Inline JavaScript · 7,537 B (11.4%) — unnamedopens
window.addEventListener("load", () => { const initCtaSection = () => { - Inline CSS · 6,120 B (9.3%) — unnamedopens
/* Make text look crisper and more legible in all browsers */ body { - - Inline JavaScript · 2,725 B (4.1%) — unnamedopens
window.addEventListener("load", () => { const initCurrentLink = (() =>
What changed
- 2026-09-21a stale edge copy was servedappeared
5 scans on record, first 2026-09-18. Score movements are shown only between readings taken under the same score version; finding codes are comparable across all of them.
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Dispute or re-scan
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By email instead: hello@crawlcheck.io. Category “Vertical AI: enterprise, legal, health, bio” is our label for what the product is primarily sold as; it is not scored. Back to the directory.