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Lookproof CSP Parser
x402
Lookproof CSP Parser is a paid API for AI agents from api.lookproof.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).
Parses a Content-Security-Policy header value offline, identifying directives, sources, unsafe flags, wildcards, and missing critical entries per CSP Level 3.
Price / call$0.002
Success—
StatusUnknown
How this service works
Check SPF, DMARC, DKIM, MTA-STS, DNSSEC and more, with results that explain what was found and why. Free browser checks and a pay-per-request API with x402.
Output
A structured breakdown of the parsed CSP including: each directive and its sources, presence of unsafe-inline and unsafe-eval, wildcard and scheme-only sources in script or plugin directives, which critical directives (default-src, object-src, base-uri) are missing, and whether the policy is in report-only mode.
Example use cases
Pre-deploy CSP security review
“Before I push this to production, can you parse this Content-Security-Policy and tell me if there's anything dangerous or missing — like unsafe-inline, unsafe-eval, wildcard sources, or absent base-uri: "default-src 'self'; script-src * 'unsafe-eval'; img-src 'self' data:"?”
Audit report-only CSP policy
“I've got a report-only CSP I want to review before making it enforced — can you parse it and highlight any gaps like missing object-src or overly permissive sources: "Content-Security-Policy-Report-Only: default-src 'self'; script-src 'self' 'unsafe-inline'"?”
CI pipeline CSP validation step
“As part of our deployment check, parse this CSP string and flag any issues including missing default-src, wildcard or scheme-only script sources, and unsafe flags: "script-src https: 'unsafe-inline'; style-src 'self'"?”
Technical details
Endpoint
POSThttps://api.lookproof.dev/v1/http/csp-parse?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need offline, deterministic, standards-accurate CSP Level 3 parsing without making live DNS or network requests. It is ideal for CI/CD pipelines, security review workflows, or any agent that writes or audits CSP headers before deployment. Prefer it over a generic security scanner when you specifically need structured directive-by-directive CSP analysis.
Side effects
- Empty or missing header field returns a validation error
- Header exceeding 8192 characters is rejected
- Malformed JSON input returns a 400-level error
- Completely blank CSP string returns a parse error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| header | string |
Tags
x402
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