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PHION Index Feed
x402
PHION Index Feed is a paid API for AI agents from phion.systems, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).
Returns a canonical snapshot or digest-based delta of the PHION tool catalog, including exact execution templates and signed evidence for each listed capability
Price / call$0.005
Success—
StatusUnknown
How this service works
Canonical PHION catalog snapshot or digest-based delta with exact execution templates and signed evidence
Output
A catalog snapshot or digest-based delta containing the current set of PHION-listed capabilities, each with exact execution templates (ready-to-use invocation parameters) and signed cryptographic evidence attesting to their listing. May include a digest identifier for future delta requests.
Example use cases
Bootstrap agent tool registry
“Fetch the full PHION index snapshot with execution templates and signed evidence so I can populate my agent's tool registry from scratch.”
Delta sync after catalog update
“I already have a local PHION catalog from last week — can you get me just the delta since that digest so I can update my registry without re-downloading everything?”
Audit available tools before deployment
“Before I deploy this agent, pull the canonical PHION index so I can review exactly which capabilities are listed, check their execution templates, and confirm the signed evidence looks valid.”
Technical details
Endpoint
POSThttps://phion.systems/v1/paid/trust/index-feed?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs a trusted, verifiable, signed list of PHION-cataloged tools — especially when execution templates are needed for direct invocation, or when a digest-based delta is required to efficiently synchronize a local tool registry without re-fetching the entire catalog. Prefer over generic tool directories when cryptographic evidence and signed provenance of listed capabilities matter.
Side effects
- Invalid or unrecognized digest hash returns an error or falls back to full snapshot
- Payment not received (x402) results in 402 Payment Required with payment instructions
- Malformed request body returns 400 with validation details
- Catalog temporarily unavailable returns 503
- Stale or expired signed evidence if catalog has not been refreshed recently
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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