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TrustFetch Echo
x402
TrustFetch Echo is a paid API for AI agents from trustfetch.duckdns.org, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Echoes back submitted text, serving as a stub demonstration of the TrustFetch multi-tool portfolio pattern for safety and content tools.
Price / call$0.001
Success—
StatusUnknown
How this service works
Safety and content tools for AI agents. Scan text for hidden prompt-injection attempts, or fetch and clean a webpage -- with built-in injection screening -- before your agent acts on what it reads.
Output
Returns a JSON object containing the original 'text' field echoed back verbatim, plus a 'note' field describing this as a stub tool demonstrating the multi-tool portfolio pattern.
Example use cases
API connectivity smoke test
“Ping TrustFetch with the text 'ping' and confirm it echoes it back so I know the integration is live.”
Developer portfolio pattern demo
“Send the text 'This is my test payload' through TrustFetch and show me what comes back, including any notes about the tool pattern.”
Agent input pass-through check
“I want to make sure TrustFetch is receiving my agent's output correctly — echo back the string 'agent output check v1' and show me the full response.”
Technical details
Endpoint
POSThttps://trustfetch.duckdns.org/tools/echoWhen to prefer
Use this endpoint to verify that your agent or integration can successfully communicate with the TrustFetch API — it is a lightweight, low-cost stub tool best suited for connectivity checks, integration smoke tests, or demonstrating the TrustFetch multi-tool portfolio pattern. Do not use this for actual prompt-injection scanning or webpage fetching, which are separate TrustFetch tools.
Side effects
- Missing required 'text' field returns a validation error
- Empty string input may return an empty echo
- Service unavailable on duckdns.org dynamic DNS if host is offline or IP has changed
- Malformed JSON body returns a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| note | string | |
| textrequired | string |
Tags
x402
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