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$ man source-trust-envelope

/source-trust-envelope

agentutility / compose / source-trust-envelope
PRICE / CALL
$0.07
USDC · base mainnet · scheme: exact
METHOD
POST
CLUSTER
compose
CATEGORY
uncategorized
STATUS
live
NAME
source-trust-envelope send a url, get one verdict on whether your agent should trust and cite it
SYNOPSIS
POST https://x402.agentutility.ai/source-trust-envelope
     Content-Type: application/json
     X-PAYMENT:    <signed-transferWithAuthorization>

     { ... }
↳ first call → 402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.
DESCRIPTION

Send a URL, get one verdict on whether your agent should trust and cite it. Composite: one call runs content-authenticity-report (required, is the content AI slop), web-search (degradable, does the claim show up on independent domains), and website-trust-report (degradable, domain reputation, risk flags, TLS, lookalike risk) in parallel. Returns trust_verdict (trusted/mixed/untrusted) from deterministic thresholds, a 0-1 trust_score blend, and the per-signal breakdown. A search or domain-trust outage degrades that signal; a content-authenticity failure fails the call, since that is the core signal. Heuristic, not forensic. Use it as a source trust API, citation trust check, credibility scorer, or pre-citation gate for research agents.

INPUTrequest schema
propertytypedescriptionreq?
urlstringPage to evaluate (http/https). Max 2048 chars.required
OUTPUTresponse shape
fieldtypedescription
urlstring
trust_verdictstring
trust_scorestring
content_authenticitystring
corroborationstring
domain_truststring
composed_ofstring
componentsstring
degradedstring
EXAMPLEStwo ways to call
EXAMPLE 1 · curl
curl -X POST https://x402.agentutility.ai/source-trust-envelope \
  -H 'Content-Type: application/json' \
  -d '{ }'
first response = 402 Payment Required with payment requirements; sign + retry with X-PAYMENT.
EXAMPLE 2 · mcp
# Install the MCP package for this endpoint's cluster
npx -y @agentutility/mcp-<cluster>

# Required: EVM private key with USDC on Base
export X402_PRIVATE_KEY=0x...

# Then call the source-trust-envelope tool from your MCP-aware agent.
MCP server handles payment automatically — your coding agent just calls the tool by name.
METADATA
tags
composesourcetrustenvelopesource-trust-envelope
methods
POST
cluster
compose
price
$0.07 USDC per call
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SEE ALSO
agentutility · compose · x402 · mcp · llms.txt · registry.json · bazaar.x402.org