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Phion Systems Web Evidence Fetcher
x402
Phion Systems Web Evidence Fetcher is a paid API for AI agents from phion.systems, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).
Fetches web content as cryptographically hashed and signed evidence, screened against prompt injection, for use by AI agents
Price / call$0.004
Success—
StatusUnknown
How this service works
Independent, prompt-injection-screened, hashed and signed web evidence for AI agents
Output
A cryptographically hashed and signed representation of the fetched web content, screened for prompt injection attacks, providing AI agents with verifiable, tamper-evident evidence of what a web page contained at the time of the request.
Example use cases
Fact-checking a news article
“Fetch me tamper-proof, signed web evidence of this news article at https://bbc.com/news/some-story so I can confirm what it actually says without worrying about prompt injection tricks.”
Verifying a product listing price
“I need a cryptographically signed and hashed snapshot of the Amazon product page at https://amazon.com/dp/B09XYZ to verify the price listed right now — make sure it's screened for prompt injection.”
Auditable legal or regulatory page snapshot
“Pull a hashed and signed copy of the SEC filing page at https://sec.gov/some-filing as trustworthy evidence I can cite, ensuring the content has been screened for prompt injection before it reaches my agent.”
Technical details
Endpoint
POSThttps://phion.systems/v1/paid/fetch-evidenceWhen to prefer
Choose this endpoint when your AI agent needs to cite or act on web content that must be verifiable and tamper-evident — especially in adversarial or high-stakes contexts where the fetched page might contain prompt injection payloads. It is the right choice over generic web scraping when cryptographic proof of content and injection screening are required, such as in audits, fact-checking pipelines, legal evidence gathering, or multi-agent workflows where one agent's web fetch feeds into another agent's decision-making.
Side effects
- URL is unreachable or returns non-200 status — evidence cannot be collected
- Prompt injection detected in fetched content — request may be blocked or flagged
- Invalid or malformed URL input — request rejected
- Payment not included or insufficient — x402 payment required error
- Target page content too large or timeout — partial or failed fetch
Input
Schema · Request body
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema"
}Tags
x402
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