PHION Agent Trust Infrastructure
systems.phion/evidence-engine
Seventeen AI-agent services with x402 USDC on Base, Polygon, Arbitrum and Solana.
Description as published in the official MCP registry.
Answers the MCP handshake and lists its tools. Checked 2026-10-04.
What we measured
| Endpoint | https://phion.systems/mcp | registry |
|---|---|---|
| Handshake | Answers the MCP handshake and lists its tools (2,638 ms) | our check, 2026-10-04 |
| Protocol version | 2025-06-18 | our check, 2026-10-04 |
| Tools (135) | phion_discover, phion_search_services, phion_get_service, phion_preflight, phion_resolve, phion_execute, index_feed, preflight, try_service, schema_normalize_free, payment_diagnose, payment_capability_preflight, verify, attest, payment_preflight, fetch_evidence, mandate_reserve, inspect_agent, journey_verify, transaction_assurance, transaction_recovery, schema_normalize, agent_reputation_evidence, counterparty_risk_preflight, tool_output_firewall, delegation_scope_guard, memory_write_guard, mcp_manifest_firewall, tool_call_policy_guard, data_egress_preflight, agent_budget_guard, idempotency_replay_guard, human_approval_policy, secret_redaction_preflight, oauth_token_audience_guard, redirect_callback_validator, tool_capability_drift_monitor, mcp_server_identity_evidence, agent_task_handoff_receipt, context_provenance_labeler, signed_result_comparator, service_sla_attestation, payment_route_selector, x402_quote_comparator, payment_receipt_reconciler, duplicate_charge_detector, subscription_spend_guard, webhook_verifier, delivery_evidence, inter_agent_policy_evaluator, concurrency_guard, resource_cycle_guard, abandoned_tool_detector, manifest_version_diff, dependency_provenance_assessment, conflict_resolution, data_freshness_certificate, domain_ownership_evidence, purpose_bound_consent, retention_deletion_receipt, interrupted_task_recovery, portable_observability_audit, rwa_asset_due_diligence, rwa_compliance, rwa_nav_reserve, rwa_transaction_assurance, rwa_corporate_actions, rwa_sanctions_screening_evidence, verified_web_extract, entity_enrichment_evidence, social_source_evidence, market_data_snapshot, onchain_evidence, verified_news_monitor, multi_source_fact_bundle, document_to_verified_json, source_backed_search, live_data_freshness, person_enrichment_evidence, company_enrichment_evidence, contact_enrichment_evidence, mcp_2026_compatibility_gateway, durable_agent_task, task_checkpoint_evidence, task_cancel_assurance, agent_approval_relay, capability_negotiation_preflight, mcp_catalog_cache_guard, oauth_issuer_binding_evidence, mcp_a2a_task_bridge, quote_freshness_guard, delegated_credential_guard, agent_session_continuity, task_lease_guard, tool_result_schema_validator, agent_memory_provenance, payment_delivery_atomicity, service_failover_selector, agent_rate_limit_negotiator, execution_cost_estimator | tools/list, 2026-10-04 |
| Registry version | 1.9.1 · active · updated 2026-09-13 | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows a real call went through, not just an opinion. How to file one.
Connect
claude mcp add --transport http evidence-engine https://phion.systems/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
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Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name systems.phion/evidence-engine.