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DDG Agent Price Parity Check
x402
DDG Agent Price Parity Check is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Compares the live x402 price an agent is charged at runtime against discovery-advertised prices and third-party quotes, returning a signed parity verdict with spread analysis and evidence URLs.
Price / call$0.01
Success—
StatusUnknown
How this service works
Price-parity check: compares the 402 price an agent is CHARGED (live runtime resolver) against what discovery ADVERTISES (/.well-known/x402 manifest, service registry) and any third-party quote passed in. Returns per-route prices, parity verdict, spread and evidence URLs to re-verify. Deterministic, no outbound calls, signed verdict.
Output
Returns a structured response containing per-route prices from each source (runtime resolver, well-known manifest, service registry, third-party quote), a boolean parity verdict (ok/not-ok), the price spread in absolute and percentage terms, and evidence URLs for independent re-verification. The verdict is cryptographically signed by DDG.
Example use cases
Detect x402 price manipulation before payment
“Before my agent pays for this x402 service, check whether the $0.05 USDC price I'm seeing at runtime matches what the /.well-known/x402 manifest advertises — I want a signed verdict and any price spread flagged.”
Audit service registry vs live price
“The service registry listed this route at $0.01 USDC but the runtime resolver is quoting me $0.03. Can you run a price parity check and give me evidence URLs I can use to verify the discrepancy?”
Confirm consistent pricing across discovery sources
“I'm integrating three different x402 routes into my agent workflow and want to make sure none of them are charging more at runtime than what agentic.market or bazaar shows — can you do a parity check on all three and flag any spreads?”
Technical details
Endpoint
POSThttps://agents.daedalusdevelopmentgroup.com/v1/agent-price-parity-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to verify before payment that the x402 price it is being charged at runtime matches what was advertised during discovery across manifests and registries. Ideal for agents operating in adversarial or untrusted environments where price manipulation is a concern, or when building compliance auditing into agentic payment workflows. Prefer this over manual inspection when you need a signed, machine-readable verdict with evidence URLs.
Side effects
- Missing required input body fields returns validation error
- Unresolvable route or unknown manifest returns inconclusive verdict
- Price sources temporarily unavailable may result in partial comparison
- Stale or malformed well-known manifest causes parse error
- Third-party quote format mismatch causes comparison failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Tags
x402
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