resend.com
Resend
The email API for developers.
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resend.com
The email API for developers.
Submitted URLs are declarations until checked. Verification inspects published content and does not execute third-party tools.
Latest retrieval did not establish resource availability. Previous successful evidence, if any, is retained with reduced confidence.
The score measures observable documentation quality. Each component below lists its earned points, exact checks, and source observations. It is not a prediction of AI rankings or citations.
Overall readiness
Confidence: high· V2
How this score is calculated
round(94.98 ÷ 100 × 100) = 95/100
94.98 points earned out of 100 assessed. All 100 available points were assessed. The checks below show each result. Optional integrations and file size earn no extra points.
Full scoring rules and worked exampleCurrent usable primary file: 25/25.
Current llms.txt retrieval succeeded (HTTP 200); usable text verified.
llms.txt: Documentation sections: Resend; OpenAPI Specs. Derived from headings; source checked 2026-11-03.
Listing updated: . Machine-readable profile (JSON)
{
"schemaVersion": "1.0",
"name": "Resend",
"slug": "resend",
"website": "https://resend.com",
"category": "saas",
"description": "The email API for developers.",
"capabilities": [
"llmsTxt documentation"
],
"aiResources": {
"llmsTxt": {
"type": "llmsTxt",
"url": "https://resend.com/docs/llms.txt",
"status": "verified",
"available": true,
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:49.829Z",
"lastSuccessfulAt": "2026-11-03T22:13:49.829Z",
"contentType": "text/plain; charset=utf-8",
"contentSize": 60784,
"estimatedTokens": 15196,
"tokenMethod": "UTF-16 characters / 4 (approximation)",
"contentHash": "1bca950be4bc76c26880b5ef98aaddf022bf5c9e6ad1ddf7adada22a2938bb9d",
"internalLinks": 426,
"externalLinks": 0,
"document": {
"h1Count": 1,
"firstBlockIsH1": true,
"title": "Resend",
"usefulTitle": true,
"headingCount": 2,
"uniqueHeadingCount": 2,
"hasSections": true,
"orderedHeadings": true,
"sectionWithContent": true,
"fileListLinks": 426,
"summaryPresent": true,
"contextPresent": false,
"validLinks": 426,
"invalidLinks": 0,
"duplicateLinks": 0,
"descriptiveLinks": 426,
"annotatedLinks": 423
},
"linkHealth": {
"eligibleCount": 426,
"selectedCount": 5,
"sampledCount": 5,
"working": 5,
"broken": 0,
"unknown": 0,
"checkedAt": "2026-11-03T22:13:50.190Z",
"sourceHash": "1bca950be4bc76c26880b5ef98aaddf022bf5c9e6ad1ddf7adada22a2938bb9d",
"method": "deterministic sample, at most 5 URLs, at most 2 concurrent hosts, 15s budget",
"results": [
{
"url": "https://resend.com/docs/resend-skill.md",
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:50.190Z",
"attempted": true,
"status": "working",
"reason": "http_success"
},
{
"url": "https://resend.com/docs/api-reference/webhooks/rotate-signing-secret.md",
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:50.190Z",
"attempted": true,
"status": "working",
"reason": "http_success"
},
{
"url": "https://resend.com/docs/openclaw-guide.md",
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:50.190Z",
"attempted": true,
"status": "working",
"reason": "http_success"
},
{
"url": "https://resend.com/docs/api-reference/topics/create-topic.md",
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:50.190Z",
"attempted": true,
"status": "working",
"reason": "http_success"
},
{
"url": "https://resend.com/docs/send-with-django-smtp.md",
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:50.190Z",
"attempted": true,
"status": "working",
"reason": "http_success"
}
]
},
"headings": [
"Resend",
"OpenAPI Specs"
],
"warnings": [],
"summary": "Documentation sections: Resend; OpenAPI Specs.",
"summarySourceHash": "1bca950be4bc76c26880b5ef98aaddf022bf5c9e6ad1ddf7adada22a2938bb9d",
"processingVersion": "2.0",
"method": "markdown-ast-analysis"
},
"llmsFullTxt": {
"type": "llmsFullTxt",
"url": "https://resend.com/docs/llms-full.txt",
"status": "unavailable",
"available": false,
"httpStatus": null,
"checkedAt": "2026-11-03T22:13:50.047Z",
"lastSuccessfulAt": null,
"warnings": [
"Latest retrieval did not establish resource availability. Previous successful evidence, if any, is retained with reduced confidence."
],
"processingVersion": "2.0",
"method": "static-content-analysis",
"failureHelp": {
"code": "oversized",
"reason": "The response exceeded the 1 MiB verification limit.",
"fix": "Publish a concise llms.txt index with links to separate documentation pages. Reduce this resource below 1 MiB before requesting a recheck."
}
},
"webmcp": null
},
"readiness": {
"score": 95,
"version": "2.0",
"confidence": "high",
"components": [
{
"name": "availability",
"weight": 25,
"assessedWeight": 25,
"points": 25,
"rules": [
{
"id": "current_access",
"label": "Current usable primary file",
"weight": 25,
"observation": "Current llms.txt retrieval succeeded (HTTP 200); usable text verified.",
"points": 25
}
],
"explanation": "Current usable primary file: 25/25."
},
{
"name": "structure",
"weight": 25,
"assessedWeight": 25,
"points": 25,
"rules": [
{
"id": "title",
"label": "One project H1 at the beginning",
"weight": 10,
"observation": "1 H1 heading(s); starts with H1: yes.",
"points": 10
},
{
"id": "sections",
"label": "Coherent content sections",
"weight": 5,
"observation": "H2 with content: yes; no heading-level jumps: yes.",
"points": 5
},
{
"id": "file_lists",
"label": "Documentation links organized in lists",
"weight": 5,
"observation": "426 valid link occurrence(s) inside Markdown lists.",
"points": 5
},
{
"id": "heading_uniqueness",
"label": "Non-repeated headings",
"weight": 5,
"observation": "2 unique heading(s) out of 2; code examples are excluded.",
"points": 5
}
],
"explanation": "One project H1 at the beginning: 10/10. Coherent content sections: 5/5. Documentation links organized in lists: 5/5. Non-repeated headings: 5/5."
},
{
"name": "links",
"weight": 25,
"assessedWeight": 25,
"points": 24.98,
"rules": [
{
"id": "link_syntax",
"label": "Resolvable HTTP(S) link syntax",
"weight": 5,
"observation": "426 valid URL occurrence(s), 0 malformed, unsupported or unresolved.",
"points": 5
},
{
"id": "link_uniqueness",
"label": "Unique documentation destinations",
"weight": 5,
"observation": "426 unique destination(s) from 426 valid occurrence(s).",
"points": 5
},
{
"id": "link_labels",
"label": "Descriptive link labels",
"weight": 2.5,
"observation": "426 of 426 unique links have non-placeholder labels. This is a text heuristic, not a semantic guarantee.",
"points": 2.5
},
{
"id": "link_notes",
"label": "Context beside file links",
"weight": 2.5,
"observation": "423 of 426 unique links have notes beside a Markdown list link.",
"points": 2.48
},
{
"id": "link_health",
"label": "Sampled destination accessibility",
"weight": 10,
"observation": "5 of 426 destinations sampled: 5 working, 0 confirmed 404/410, 0 unknown. Only working and confirmed-broken results enter this fraction.",
"points": 10
}
],
"explanation": "Resolvable HTTP(S) link syntax: 5/5. Unique documentation destinations: 5/5. Descriptive link labels: 2.5/2.5. Context beside file links: 2.48/2.5. Sampled destination accessibility: 10/10."
},
{
"name": "confidence",
"weight": 15,
"assessedWeight": 15,
"points": 15,
"rules": [
{
"id": "verification_age",
"label": "Age of last successful verification",
"weight": 10,
"observation": "Last success: 2026-11-03T22:13:49.829Z. Full points through day 8 (7-day schedule plus 1-day grace), 60% through day 30, 20% thereafter or for an unknown date.",
"points": 10
},
{
"id": "latest_success",
"label": "Latest primary check succeeded",
"weight": 5,
"observation": "Latest primary verification succeeded.",
"points": 5
}
],
"explanation": "Age of last successful verification: 10/10. Latest primary check succeeded: 5/5."
},
{
"name": "metadata",
"weight": 10,
"assessedWeight": 10,
"points": 5,
"rules": [
{
"id": "summary",
"label": "Useful summary blockquote",
"weight": 5,
"observation": "A blockquote before the first H2 with at least 20 non-whitespace characters and no placeholder-only text.",
"points": 5
},
{
"id": "context",
"label": "Useful introductory context",
"weight": 5,
"observation": "An introductory paragraph before the first H2 with at least 20 non-whitespace characters and no placeholder-only text. Listing form fields do not earn these points.",
"points": 0
}
],
"explanation": "Useful summary blockquote: 5/5. Useful introductory context: 0/5."
}
],
"earnedPoints": 94.98,
"assessedWeight": 100,
"availableWeight": 100,
"provisional": false,
"calculatedAt": "2026-11-03T22:13:51.514Z",
"lastVerifiedAt": "2026-11-03T22:13:49.829Z",
"evidence": {
"sourceUrl": "https://resend.com/docs/llms.txt",
"contentHash": "1bca950be4bc76c26880b5ef98aaddf022bf5c9e6ad1ddf7adada22a2938bb9d",
"processingVersion": "2.0",
"retrievedAt": "2026-11-03T22:13:49.829Z"
},
"linkSampling": {
"eligibleCount": 426,
"selectedCount": 5,
"sampledCount": 5,
"working": 5,
"broken": 0,
"unknown": 0,
"checkedAt": "2026-11-03T22:13:50.190Z",
"sourceHash": "1bca950be4bc76c26880b5ef98aaddf022bf5c9e6ad1ddf7adada22a2938bb9d",
"method": "deterministic sample, at most 5 URLs, at most 2 concurrent hosts, 15s budget",
"results": [
{
"url": "https://resend.com/docs/resend-skill.md",
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:50.190Z",
"attempted": true,
"status": "working",
"reason": "http_success"
},
{
"url": "https://resend.com/docs/api-reference/webhooks/rotate-signing-secret.md",
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:50.190Z",
"attempted": true,
"status": "working",
"reason": "http_success"
},
{
"url": "https://resend.com/docs/openclaw-guide.md",
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:50.190Z",
"attempted": true,
"status": "working",
"reason": "http_success"
},
{
"url": "https://resend.com/docs/api-reference/topics/create-topic.md",
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:50.190Z",
"attempted": true,
"status": "working",
"reason": "http_success"
},
{
"url": "https://resend.com/docs/send-with-django-smtp.md",
"httpStatus": 200,
"checkedAt": "2026-11-03T22:13:50.190Z",
"attempted": true,
"status": "working",
"reason": "http_success"
}
]
},
"warnings": [
"This measures observable documentation, not model rankings or citation probability.",
"H1 is the only required section in the llms.txt proposal. Other checks are LLMSList quality preferences; missing optional sections do not make usable text invalid.",
"Destination accessibility covers a sample of 5 out of 426 unique links, not the entire website."
]
},
"updatedAt": "2026-11-03T22:13:51.514Z"
}Related listings based on category, resource types, and description keywords
geardex.app
GearDex is a camera gear inventory and business app for photographers and small video studios. You log bodies and lenses with serial numbers and insurance values. Paid plans add loans with QR check-out plus client galleries. The llms.txt covers plans and features for the web app and the Mac and Windows desktop apps.
One project H1 at the beginning: 10/10. Coherent content sections: 5/5. Documentation links organized in lists: 5/5. Non-repeated headings: 5/5.
1 H1 heading(s); starts with H1: yes.
H2 with content: yes; no heading-level jumps: yes.
426 valid link occurrence(s) inside Markdown lists.
2 unique heading(s) out of 2; code examples are excluded.
Resolvable HTTP(S) link syntax: 5/5. Unique documentation destinations: 5/5. Descriptive link labels: 2.5/2.5. Context beside file links: 2.48/2.5. Sampled destination accessibility: 10/10.
426 valid URL occurrence(s), 0 malformed, unsupported or unresolved.
426 unique destination(s) from 426 valid occurrence(s).
426 of 426 unique links have non-placeholder labels. This is a text heuristic, not a semantic guarantee.
423 of 426 unique links have notes beside a Markdown list link.
5 of 426 destinations sampled: 5 working, 0 confirmed 404/410, 0 unknown. Only working and confirmed-broken results enter this fraction.
Age of last successful verification: 10/10. Latest primary check succeeded: 5/5.
Last success: 2026-11-03T22:13:49.829Z. Full points through day 8 (7-day schedule plus 1-day grace), 60% through day 30, 20% thereafter or for an unknown date.
Latest primary verification succeeded.
Useful summary blockquote: 5/5. Useful introductory context: 0/5.
A blockquote before the first H2 with at least 20 non-whitespace characters and no placeholder-only text.
An introductory paragraph before the first H2 with at least 20 non-whitespace characters and no placeholder-only text. Listing form fields do not earn these points.
How to improve: Add a useful > summary and a separate introductory paragraph before the first ## section in the file itself. Each must contain at least 20 non-whitespace characters and not consist only of placeholder text. Each earns five default points. Editing listing form fields alone does not improve this component.
80–100%50–79%0–49%Gray: not assessed
Component colors use earned points ÷ assessed points. Unmeasured checks are excluded from the assessed maximum. Model v2.0. Calculated 2026-11-03 22:13:51 UTC.
5 of 426 unique destinations checked: 5 working, 0 confirmed broken, 0 unknown. We check up to five destinations, not every page. A successful HTTP response does not prove that a page is relevant or factually correct.
Sample checked: 2026-11-03 22:13:50 UTC · Source snapshot: 1bca950be4bc
Destination responded successfully
Destination responded successfully
Destination responded successfully
Last verified: 2026-11-03.
This measures observable documentation, not model rankings or citation probability.
H1 is the only required section in the llms.txt proposal. Other checks are LLMSList quality preferences; missing optional sections do not make usable text invalid.
Destination accessibility covers a sample of 5 out of 426 unique links, not the entire website.
AI Resource Readiness
Confidence: medium· V2 · provisional
citedby.eu
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AI Resource Readiness
Confidence: high· V2
kollavo.com
Kollavo gets your company cited in AI answers (ChatGPT, Perplexity, Google AI, Claude, Gemini) with AI visibility monitoring and done-for-you citation placements.
AI Resource Readiness
Confidence: high· V2
saaspricealerts.com
Public plan prices for 314 SaaS tools, each quoted from the vendor pricing page with the date checked. Browse by vendor or pull the data from a free JSON API with no key. Built for buyers, founders, and AI agents that need a sourced price.
AI Resource Readiness
Confidence: high· V2
simpleverifier.com
Bulk email verification with a live SMTP mailbox check. Valid, risky or invalid with a reason on every row. Plans from $9/mo; first 100 checks free, no card. simpleverifier.com
AI Resource Readiness
Confidence: high· V2
snapevents.com
Corporate event, open-book DMC, 150-venue buyout, zero-attrition group hotel block & Hotel BEO Quote Auditor platform serving Las Vegas, NV and Austin, TX (HQ: 105 Lands End Cove, Round Rock, TX 78681 · (512) 971-5049) with statutory Out-the-Door pricing and 306 Markdown twins.
AI Resource Readiness
Confidence: high· V2
Destination responded successfully
Destination responded successfully
Only HTTP 404/410 is classified as confirmed broken. HTTP 403/429, timeouts and incomplete checks remain unknown. If all sample outcomes are unknown, the link-health check is excluded from the assessed maximum and the score is marked provisional.