Is systems.phion/evidence-engine up? Live MCP status
Yes, it is up. It answered an MCP initialize with no credential and negotiated protocol 2025-06-18.
A stock client connected with no credential and negotiated 2025-06-18. Use it.
| Outcome | usable |
|---|---|
| HTTP status | 200 |
| Protocol version | 2025-06-18 |
| Server says it is | phion-universal 1.57.0 |
| Answered in | 206 ms |
| Endpoint checked | https://phion.systems/mcp |
| Checked |
One MCP handshake with the listed endpoint (server/discover at 2026-07-28, then initialize for a server on the older revision), with no credential and no retry, identifying itself as agentwares-mcp-liveness/0.1 (+https://agentwares-agentcheck.vercel.app/bot). It runs when this page is requested and the result is reused for 10 minutes, so the time above is when it was taken.
Live status every few hours: Wellknown
Email me when this server changes
That was one look. To hear when it stops answering or its tools change, leave an address.
Free, no password or GitHub: one confirmation email first, then a check every hour and an email when it stops answering or its tools change. Every email has a link to stop. More about it.
Monthly census, 6 October 2026
The census sends the same request to every remote listing in the official registry once a month. On 6 October 2026 this one answered a stock client with no credential. Every listing’s result: index.ndjson (what the files hold: index.meta.json).
Agent discovery documents at this origin
| A2A agent card | Published, valid. A2A 1.0 shape; 132 skills; JSONRPC./.well-known/agent-card.json |
|---|---|
| MCP server card (SEP-2127) | Not published (HTTP 405).https://phion.systems/mcp/server-card |
| MCP server card (SEP-1649 location) | Not published (HTTP 404)./.well-known/mcp/server-card.json — SEP-1649, a draft superseded by SEP-2127 on 21 January 2026 |
| Web Bot Auth key directory | Not published (HTTP 404)./.well-known/http-message-signatures-directory |
Read at https://phion.systems with the monthly census on 9 October 2026: one GET each, no credential, never a signed request. A2A against v1.0.1, the server card against the MCP Server Card schema (SEP-2127), the card at SEP-1649’s location against the shape it has, the key directory against the Web Bot Auth draft of 1 September 2026. Who publishes them.
Tool changes between snapshots
In the 2026-10 snapshot it listed 135 tools: a2a_transaction_bridge, abandoned_tool_detector, agent_approval_relay, agent_behavior_fingerprint, agent_budget_guard, agent_economic_graph, agent_memory_provenance, agent_rate_limit_negotiator, agent_reputation_evidence, agent_session_continuity, agent_task_handoff_receipt, ap2_mandate_bridge, attest, automated_dispute_bundle, autonomous_procurement, capability_benchmark, capability_negotiation_preflight, capability_verification, company_enrichment_evidence, concurrency_guard, conflict_resolution, contact_enrichment_evidence, context_provenance_labeler, counterparty_risk_preflight, cross_agent_receipt_bundle, cross_protocol_receipt, data_egress_preflight, data_freshness_certificate, delegated_credential_guard, delegated_spend_policy, delegation_scope_guard, delivery_evidence, dependency_provenance_assessment, document_to_verified_json, domain_ownership_evidence, duplicate_charge_detector, durable_agent_task, dynamic_service_pricing, economic_loop_detector, entity_enrichment_evidence, erc8004_identity_evidence, erc8004_reputation_intelligence, execution_cost_estimator, fetch_evidence, human_approval_policy, idempotency_replay_guard, index_feed, inspect_agent, inter_agent_policy_evaluator, interrupted_task_recovery, journey_verify, live_data_freshness, mandate_reserve, manifest_version_diff, market_data_snapshot, market_demand_predictor, mcp_2026_compatibility_gateway, mcp_a2a_task_bridge, mcp_catalog_cache_guard, mcp_manifest_firewall, mcp_server_identity_evidence, mcp_transaction_gateway, memory_write_guard, multi_agent_escrow, multi_source_fact_bundle, oauth_issuer_binding_evidence, oauth_token_audience_guard, onchain_evidence, payment_capability_preflight, payment_delivery_atomicity, payment_diagnose, payment_optimizer, payment_preflight, payment_receipt_reconciler, payment_route_selector, person_enrichment_evidence, phion_discover, phion_enrich, phion_enrich_basic, phion_execute, phion_get_service, phion_inference, phion_intelligence, phion_preflight, phion_resolve, phion_search, phion_search_services, portable_observability_audit, preflight, price_discovery_engine, proof_of_service, provider_quality_predictor, purpose_bound_consent, quote_freshness_guard, redirect_callback_validator, reputation_update_receipt, resource_cycle_guard, retention_deletion_receipt, rwa_asset_due_diligence, rwa_compliance and 35 more.
Its tools changed between 2026-09 and 2026-10:
- Added (116):
a2a_transaction_bridge,abandoned_tool_detector,agent_approval_relay,agent_behavior_fingerprint,agent_budget_guard,agent_economic_graph,agent_memory_provenance,agent_rate_limit_negotiator,agent_reputation_evidence,agent_session_continuity,agent_task_handoff_receipt,ap2_mandate_bridge,automated_dispute_bundle,autonomous_procurement,capability_benchmark,capability_negotiation_preflight,capability_verification,company_enrichment_evidence,concurrency_guard,conflict_resolution,contact_enrichment_evidence,context_provenance_labeler,counterparty_risk_preflight,cross_agent_receipt_bundle,cross_protocol_receipt,data_egress_preflight,data_freshness_certificate,delegated_credential_guard,delegated_spend_policy,delegation_scope_guard,delivery_evidence,dependency_provenance_assessment,document_to_verified_json,domain_ownership_evidence,duplicate_charge_detector,durable_agent_task,dynamic_service_pricing,economic_loop_detector,entity_enrichment_evidence,erc8004_identity_evidence,erc8004_reputation_intelligence,execution_cost_estimator,human_approval_policy,idempotency_replay_guard,index_feed,inter_agent_policy_evaluator,interrupted_task_recovery,live_data_freshness,manifest_version_diff,market_data_snapshot,market_demand_predictor,mcp_2026_compatibility_gateway,mcp_a2a_task_bridge,mcp_catalog_cache_guard,mcp_manifest_firewall,mcp_server_identity_evidence,mcp_transaction_gateway,memory_write_guard,multi_agent_escrow,multi_source_fact_bundle,oauth_issuer_binding_evidence,oauth_token_audience_guard,onchain_evidence,payment_capability_preflight,payment_delivery_atomicity,payment_diagnose,payment_optimizer,payment_receipt_reconciler,payment_route_selector,person_enrichment_evidence,phion_discover,phion_enrich,phion_enrich_basic,phion_execute,phion_get_service,phion_inference,phion_intelligence,phion_preflight,phion_resolve,phion_search,phion_search_services,portable_observability_audit,price_discovery_engine,proof_of_service,provider_quality_predictor,purpose_bound_consent,quote_freshness_guard,redirect_callback_validator,reputation_update_receipt,resource_cycle_guard,retention_deletion_receipt,secret_redaction_preflight,service_failover_selector,service_gap_detector,service_sla_attestation,signed_result_comparator,sla_risk_predictor,social_source_evidence,source_backed_search,subscription_spend_guard,sybil_reputation_guard,task_cancel_assurance,task_checkpoint_evidence,task_lease_guard,tool_call_policy_guard,tool_capability_drift_monitor,tool_output_firewall,tool_result_schema_validator,transaction_recovery_v2,transaction_risk_score,trust_anomaly_detector,verified_news_monitor,verified_web_extract,webhook_verifier,x402_quote_comparator,x402_v2_router fetch_evidence: description changedinspect_agent: description changedjourney_verify: description, input schema changedmandate_reserve: description, input schema changedpayment_preflight: description, input schema, output schema changedrwa_asset_due_diligence: description changedrwa_compliance: description changedrwa_nav_reserve: description, input schema, output schema changedschema_normalize: description changedtransaction_assurance: description changedtransaction_recovery: description changedtry_service: input schema changed
Which tools were added or removed, and whose description or schemas changed, from content hashes in the monthly snapshots. Per tool, as JSON: /v1/drift.
The listing
| Registry name | systems.phion/evidence-engine |
|---|---|
| Title | PHION Agent Trust Infrastructure |
| Description | 123 agent services with free discovery, intent, x402 terms and signed verification. |
| Endpoint | https://phion.systems/mcp |
| Publisher repository | none listed |
| Version | 1.57.0 |
| Listing updated |
Also
The full check by name, as JSON (on a 401 it also follows the OAuth discovery chain) · Watch it · Check another server · llms.txt