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PHION Agent Trust Infrastructure

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phion.systems

AI-agent trust and RWA evidence tools with signed x402 receipts.

https://phion.systems/mcpWebsiteNo authMCP 2025-06-18v1.57.1last checked 27 Oct 2026spoke MCP on 98.8% of 86 checks (30 days)initialize in 386 ms

Last checked 27 Oct 2026

  • ✓Answered the MCP handshake (MCP 2025-06-18)
  • ✓Auth detected: No auth
  • ✓Lists 135 tools
  • ✓No blockers or warnings
  • !Spoke MCP on 85 of 86 checks (30 days)

Will my client connect?

Decided from what the probe found at the endpoint, and from what each client's own documentation says it can complete. Every row carries the day that documentation was read.

✓Claude CodeConnects

The endpoint answers an anonymous handshake, so no credential is needed.

claude mcp add --transport http phion-agent-trust-infrastructure https://phion.systems/mcp

Claude Code docs · read on 2026-08-30

✓Claude (claude.ai & Desktop)Connects

The endpoint answers an anonymous handshake, so no credential is needed.

Settings → Connectors → Add custom connector, then paste https://phion.systems/mcp.

Claude (claude.ai & Desktop) docs · read on 2026-08-30

✓ChatGPTConnects

The endpoint answers an anonymous handshake, so no credential is needed.

Settings → Apps → Advanced settings → Developer mode, then create a connector pointing at https://phion.systems/mcp.

ChatGPT docs · read on 2026-08-30

✓CursorConnects

The endpoint answers an anonymous handshake, so no credential is needed.

{
  "mcpServers": {
    "phion-agent-trust-infrastructure": {
      "url": "https://phion.systems/mcp"
    }
  }
}

Cursor docs · read on 2026-08-30

✓VS Code (Copilot)Connects

The endpoint answers an anonymous handshake, so no credential is needed.

{
  "servers": {
    "phion-agent-trust-infrastructure": {
      "type": "http",
      "url": "https://phion.systems/mcp"
    }
  }
}

VS Code (Copilot) docs · read on 2026-08-30

How to authenticate

Checked against the endpoint by our probe on 27 Oct 2026. These are the capabilities the server advertises, not a prediction about any particular client.

Scheme
No auth
Protected-resource metadata
✕Not found

Without it a client has to guess where the authorization server lives.

Anonymous access
Handshake succeeds; 135 tools listable

What the probe found

No server card

Neither the reserved <endpoint>/server-card location nor the domain's /.well-known/ai-catalog.json describes this endpoint (SEP-2127), so a client that discovers servers by domain will not find it.

Tools

a2a_transaction_bridgeabandoned_tool_detectoragent_approval_relayagent_behavior_fingerprintagent_budget_guardagent_economic_graphagent_memory_provenanceagent_rate_limit_negotiatoragent_reputation_evidenceagent_session_continuityagent_task_handoff_receiptap2_mandate_bridgeattestautomated_dispute_bundleautonomous_procurementcapability_benchmarkcapability_negotiation_preflightcapability_verificationcompany_enrichment_evidenceconcurrency_guardconflict_resolutioncontact_enrichment_evidencecontext_provenance_labelercounterparty_risk_preflightcross_agent_receipt_bundlecross_protocol_receiptdata_egress_preflightdata_freshness_certificatedelegated_credential_guarddelegated_spend_policydelegation_scope_guarddelivery_evidencedependency_provenance_assessmentdocument_to_verified_jsondomain_ownership_evidenceduplicate_charge_detectordurable_agent_taskdynamic_service_pricingeconomic_loop_detectorentity_enrichment_evidenceerc8004_identity_evidenceerc8004_reputation_intelligenceexecution_cost_estimatorfetch_evidencehuman_approval_policyidempotency_replay_guardindex_feedinspect_agentinter_agent_policy_evaluatorinterrupted_task_recoveryjourney_verifylive_data_freshnessmandate_reservemanifest_version_diffmarket_data_snapshotmarket_demand_predictormcp_2026_compatibility_gatewaymcp_a2a_task_bridgemcp_catalog_cache_guardmcp_manifest_firewallmcp_server_identity_evidencemcp_transaction_gatewaymemory_write_guardmulti_agent_escrowmulti_source_fact_bundleoauth_issuer_binding_evidenceoauth_token_audience_guardonchain_evidencepayment_capability_preflightpayment_delivery_atomicitypayment_diagnosepayment_optimizerpayment_preflightpayment_receipt_reconcilerpayment_route_selectorperson_enrichment_evidencephion_discoverphion_enrichphion_enrich_basicphion_executephion_get_servicephion_inferencephion_intelligencephion_preflightphion_resolvephion_searchphion_search_servicesportable_observability_auditpreflightprice_discovery_engineproof_of_serviceprovider_quality_predictorpurpose_bound_consentquote_freshness_guardredirect_callback_validatorreputation_update_receiptresource_cycle_guardretention_deletion_receiptrwa_asset_due_diligencerwa_compliancerwa_corporate_actionsrwa_nav_reserverwa_sanctions_screening_evidencerwa_transaction_assuranceschema_normalizeschema_normalize_freesecret_redaction_preflightservice_failover_selectorservice_gap_detectorservice_sla_attestationsigned_result_comparatorsla_risk_predictorsocial_source_evidencesource_backed_searchsubscription_spend_guardsybil_reputation_guardtask_cancel_assurancetask_checkpoint_evidencetask_lease_guardtool_call_policy_guardtool_capability_drift_monitortool_output_firewalltool_result_schema_validatortransaction_assurancetransaction_recoverytransaction_recovery_v2transaction_risk_scoretrust_anomaly_detectortry_serviceverified_news_monitorverified_web_extractverifywebhook_verifierx402_quote_comparatorx402_v2_router

Contract history

20 Oct 2026v1.57.1no contract changes
11 Oct 2026v1.57.01 compatible123 cosmeticinstructions rewritten

Instructions rewritten: phion_resolve. The description an agent follows changed; the callable contract may not have.

3 Oct 2026v1.57.0no contract changes
2 Oct 2026v1.55.92 compatible
2 Oct 2026v1.55.6no contract changes
2 Oct 2026v1.55.41 compatibleinstructions rewritten

Instructions rewritten: payment_capability_preflight. The description an agent follows changed; the callable contract may not have.

1 Oct 2026v1.55.2no contract changes
1 Oct 2026v1.55.0no contract changes
30 Sep 2026v1.53.3no contract changes
30 Sep 2026v1.53.2no contract changes
29 Sep 2026v1.52.9no contract changes
28 Sep 2026v1.52.8no contract changes
28 Sep 2026v1.52.21 compatible7 cosmetic
27 Sep 2026v1.52.05 compatible
26 Sep 2026v1.50.05 compatible
26 Sep 2026v1.49.8no contract changes
25 Sep 2026v1.49.6no contract changes
25 Sep 2026v1.49.0no contract changes
24 Sep 2026v1.46.5no contract changes
24 Sep 2026v1.46.41 breaking
23 Sep 2026v1.46.2no contract changes
22 Sep 2026v1.45.0no contract changes
22 Sep 2026v1.44.030 compatible
21 Sep 2026v1.35.023 compatible
20 Sep 2026v1.32.21 compatible
20 Sep 2026v1.32.2no contract changes
20 Sep 2026v1.32.33 breakinginstructions rewritten

Breaking: company_enrichment_evidence, contact_enrichment_evidence, person_enrichment_evidence

Instructions rewritten: company_enrichment_evidence, contact_enrichment_evidence, person_enrichment_evidence. The description an agent follows changed; the callable contract may not have.

16 Sep 2026v1.31.1no contract changes
16 Sep 2026v1.31.03 compatible
15 Sep 2026v1.28.110 compatible
15 Sep 2026v1.27.02 compatible
14 Sep 2026v1.26.0no contract changes
14 Sep 2026v1.24.01 compatible
13 Sep 2026v1.23.04 breaking39 compatible7 cosmeticinstructions rewritten

Breaking: journey_verify, mandate_reserve, payment_preflight, rwa_nav_reserve

Instructions rewritten: fetch_evidence, inspect_agent, journey_verify, mandate_reserve, payment_preflight, rwa_asset_due_diligence, rwa_compliance, rwa_nav_reserve, schema_normalize, transaction_assurance, transaction_recovery. The description an agent follows changed; the callable contract may not have.

13 Sep 2026v1.10.04 compatible
13 Sep 2026v1.0.04 compatible
12 Sep 2026v1.0.0first recorded contract

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Status badge

Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.

MCP status badge for PHION Agent Trust Infrastructure
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