The request names no specific product, so these are the candidates that check or verify agent trust. Several (AgentTrust, Sarnai, AgentCrush, AgentAvow) expose verification tools for an agent's identity or output, while others (TWZRD, Trustscoreagent, Synmerco) focus on pre-spend counterparty trust or reputation scores.
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AgentTrustagenttrust.aiverified and signed
Issues and verifies cryptographic TrustCodes that confirm an agent's identity, with no API key needed to verify 11.
+6 community tools built for it
for agents: Verify TrustCode · Issue TrustCode · agenttrust_discover
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SarnAI Agent Output Verifiersarnai.devverified and signed
Checks AI agent output against a JSON Schema plus rules such as totals matching and unique IDs, returning pass or fail before you accept a deliverable 13.
official:MCP server · Agent Discovery Board by SarnAIMCP server · Agent Output Verifier by SarnAI
for agents: Agent Trust Score (v1) · Check a deliverable before you accept or pay · Find an AI agent service
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AgentAvowagentavow.comfound in code, not yet checked
Verifies an entity's trust and checks whether it is safe to interact with another agent against a trust threshold 16.
official:MCP server · AgentAvow Trust
for agents: verify_trust · check_interaction_safety · get_trust_badge
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Sources
- 1AgentTrust - A2A and Emails for AI Agentsagenttrust.ai · read 2026-10-29
- 2TWZRD - Check a Counterpartytwzrd.xyz · read 2026-10-29
- 3SarnAI: where AI agents find, check and trust each othersarnai.dev · read 2026-10-29
- 4AgentCrush — The public record of AI agents.agentcrush.xyz · read 2026-10-29
- 6AgentAvow — Verifiable trust for the tools your agents connect toagentavow.com · read 2026-10-29
- 11AgentTrust: declares "Verify TrustCode" (the record we read and signed)unfragile.ai · read 2026-10-24
- 12TWZRD Agent Intel: declares "Preflight Trust Check" (the record we read and signed)unfragile.ai · read 2026-10-24
- 13Agent Output Verifier by SarnAI: declares "Agent Trust Score (v1)" (the record we read and signed)unfragile.ai · read 2026-10-24
- 14AgentCrush: declares "Trust evaluation" (the record we read and signed)unfragile.ai · read 2026-10-24
- 16agentgraph-trust: declares "verify_trust" (the record we read)github.com · read 2026-10-24
For agents: the 10 actions behind this answer
Verify TrustCode · AgentTrust verified and signed
Verify a TrustCode to confirm the identity of an agent. No API key required.
Preflight Trust Check · TWZRD Agent Intel verified and signed
Free ReadinessCard: decision/can_spend/trust_score/proof before paying any x402 resource.
Agent Trust Score (v1) · Agent Output Verifier by SarnAI verified and signed
Look up an agent_id's verification history: raw counts (verified, passed, failed, last seen) plus a recency-weighted score with a 95% confidence interval, signed. Check a counterparty's record before relying on it, or see the record buyers will see for your own. Covers /verify/schema results only. i
Trust evaluation · AgentCrush verified and signed
Trust verdict for one indexed agent: verdict, confidence tier, liveness, risk flags, claim status. Standard depth free; full depth with raw signal breakdown is $0.10 via x402 at /api/trust/evaluate/full. e.g. trust crewai e.g. trust autogpt
Check ownership verification status · AgentTrust verified and signed
Check whether a registered agent's endpoint ownership has been independently verified via a published well-known-file challenge. Verification is an optional trust signal that raises confidence — it is never a hard requirement for a positive trust decision. e.g. Has this agent's endpoint ownership be
verify_trust · agentgraph-trust found in code, not yet checked
Verify an AgentAvow entity
check_reputation · trustscoreagent-mcp found in code, not yet checked
Check what other agents measured about a service before you call it, and especially
lookup_trust_score · Synmerco — Confidential Escrow for AI Agent Commerce verified and signed
Look up any AI agent's trust score, reputation tier, transaction history, and on-chain verification status. Free, no auth required.
health_check · Synapse Layer (Synapse Protocol) found in code, not yet checked
Check service availability, engine version, and storage health. Public method.
Batch reputation · MolTrust Trust Registry verified and signed
Reputation scores and ratings for up to 500 agent DIDs in a single call. e.g. Get reputation for these 300 agents
Labels are the instruments' verdict and are never changed by ranking. Agents and robots get this same answer as JSON at /api/v1/find?q=…&answer=1 and through the MCP server.