{"uid":"cap_H604R7odscSX3RiiCDp5F","slug":"http-security-headers-grade-2c39501d","name":"HTTP Security Headers Grade","description":"Fetches a public http(s) URL (GET, up to 5 redirects, 10s timeout, body never read) and grades its security headers A+ to F. Returns score, present and missing headers, per-header findings with copy-paste fix values, and cookie flag issues.","url":"https://http-security-headers-grade.x402supply.com/mcp?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","toolName","inputSchema"],"properties":{"type":{"type":"string","const":"mcp"},"toolName":{"type":"string"},"transport":{"enum":["streamable-http"],"type":"string"},"description":{"type":"string"},"inputSchema":{"type":"object"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_edR24ZENZrhJmsx5SV7O9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches a public URL via GET and grades its HTTP security headers from A+ to F, returning score, present/missing headers, per-header findings with fix values, and cookie flag issues.","exampleAgentPrompt":"Can you check the security headers on https://example.com and tell me what grade it gets, what headers are missing, and how to fix them?","exampleUseCases":[{"title":"Pre-launch security header audit","prompt":"Before we go live, can you grade the security headers on https://staging.myapp.com and give me a list of everything we're missing along with the exact header values I should add?"},{"title":"Competitor security posture check","prompt":"How does https://www.competitor.com score on HTTP security headers? I want to see what grade they get and what they're missing compared to best practices."},{"title":"Ongoing compliance monitoring","prompt":"Check the security headers on https://app.mycompany.com and let me know if there are any cookie flag issues or missing headers that could fail a security audit."}],"resultDescription":"Returns an overall security grade (A+ through F), a numeric score, a list of present and missing HTTP security headers, per-header findings with copy-paste-ready fix values, and any cookie flag issues detected on the target URL.","failureModes":["URL is not publicly accessible (returns error or timeout after 10s)","URL requires authentication or returns non-2xx after up to 5 redirects","Invalid or malformed URL input","Target server blocks bot/automated requests","More than 5 redirects causes chain to abort","Non-HTTP/HTTPS URL scheme rejected"],"whenToPreferThis":"Choose this endpoint when you need a fast, structured security header audit with actionable fix recommendations for a single public URL. It is purpose-built for grading HTTP security headers with letter grades and per-header remediation advice, making it ideal for developers, security auditors, and DevSecOps workflows that want immediate, copy-paste-ready fixes rather than a generic crawler or full vulnerability scanner.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:31:49.263Z","isFirstParty":false,"canonicalSlug":"http-security-headers-grade-2c39501d"}