Search / systems.phion/evidence-engine
PHION Agent Trust Infrastructure
R0· no sign-in123 agent services with free discovery, intent, x402 terms and signed verification.
v1.57.0 · active · website · descriptor JSON · versions
Search / systems.phion/evidence-engine
R0· no sign-in123 agent services with free discovery, intent, x402 terms and signed verification.
v1.57.0 · active · website · descriptor JSON · versions
{
"mcpServers": {
"evidence-engine": {
"type": "http",
"url": "https://phion.systems/mcp"
}
}
}claude mcp add --transport http evidence-engine https://phion.systems/mcp[mcp_servers.evidence-engine]
url = "https://phion.systems/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"evidence-engine": {
"type": "remote",
"url": "https://phion.systems/mcp",
"enabled": true
}
}
}{
"mcpServers": {
"evidence-engine": {
"type": "http",
"url": "https://phion.systems/mcp"
}
},
"deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=evidence-engine&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vcGhpb24uc3lzdGVtcy9tY3AifQ%3D%3D"
}{
"servers": {
"evidence-engine": {
"type": "http",
"url": "https://phion.systems/mcp"
}
}
}{
"mcpServers": {
"evidence-engine": {
"httpUrl": "https://phion.systems/mcp"
}
}
}extensions:
"evidence-engine":
enabled: true
name: "evidence-engine"
type: streamable_http
uri: "https://phion.systems/mcp"
timeout: 300
protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28protocol.statelessonly applies to 2026-07-28 serversprotocol.transportstreamable HTTPprotocol.list_ttlonly applies to 2026-07-28 serversauth.prm, auth.as_metadata, auth.cimdno remote uses OAuthauth.secret_in_urlno templated URLtools.descriptionsevery tool has a descriptiontools.description_lengthdescriptions are concisetools.schemasevery tool has an object input schematools.annotationsonly 84 of 135 tools declare readOnlyHint or destructiveHinttools.directory_hints84 of 135 tools declare all four hints; missing: preflight (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); onchain_evidence (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); delegation_scope_guard (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …tools.token_costabout 18,613 tokens to load every tooltools.api_dumptools are not a one-to-one API dumpstability.changes145 tool changes in 30 daysstability.rug_pullno tool changed its meaning under the same namedeps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI packagephion_intelligencechangedinput schemaphion_enrichchangedinput schemaphion_enrich_basicchangedinput schemaphion_searchchangedinput schemaphion_inferencechangedinput schemacross_protocol_receiptchangedinput schemamulti_agent_escrowchangedinput schemaautonomous_procurementchangedinput schemadynamic_service_pricingchangedinput schemasla_risk_predictorchangedinput schemaShowing the latest 10. Full history: list_changes · trend: quality JSON.
Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.
+dns-namespace +website +reachable +uptime-99% +updated-17d-ago -multi-version-spam(71) -no-repository
Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.
| remote | auth | reachable | uptime 30d | p50 | protocol | last ok |
|---|---|---|---|---|---|---|
https://phion.systems/mcp streamable-http | none | yes | 99% | 235 ms | 2025-06-18 | 2026-10-20 |
a2a_transaction_bridgeread-only | Bind an A2A task to a transaction without silently transferring authority.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
abandoned_tool_detectorread-only | Require stale success plus multiple independent failed probes before classifying likely abandonment; 0.003 USDC. |
agent_approval_relayread-only | Agent Approval Relay; deterministic signed assessment over supplied input. |
agent_behavior_fingerprintread-only | Create a privacy-minimized behavioral commitment without retaining payloads or raw identifiers.; 0.003 USDC. Deterministic, evidence-bounded and signed. |
agent_budget_guard | Enforce per-call, task, session and period budgets; 0.002 USDC. |
agent_economic_graphread-only | Build privacy-bounded economic relationships only from supplied nodes and edges.; 0.005 USDC. Deterministic, evidence-bounded and signed. |
agent_memory_provenanceread-only | Agent Memory Provenance; deterministic signed assessment over supplied input. |
agent_rate_limit_negotiatorread-only | Agent Rate Limit Negotiator; deterministic signed assessment over supplied input. |
agent_reputation_evidence | Evidence-bounded agent reputation assessment with confidence, coverage, provenance limitations and a signed receipt; 0.005 USDC. |
agent_session_continuityread-only | Agent Session Continuity; deterministic signed assessment over supplied input. |
agent_task_handoff_receipt | Sign a bounded agent-task handoff; 0.003 USDC. |
ap2_mandate_bridgeread-only | Map mandate fields for review without advertising unsupported AP2 production authorization.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
attest | x402 paid signed JSON attestation; 0.001 USDC on Base. |
automated_dispute_bundleread-only | Assemble failure evidence and recommend resolution without executing refunds.; 0.005 USDC. Deterministic, evidence-bounded and signed. |
autonomous_procurementread-only | Recommend a verified eligible provider under a mandate without purchasing.; 0.005 USDC. Deterministic, evidence-bounded and signed. |
capability_benchmarkread-only | Measure reproducible success, latency and cost from versioned evidence-bound benchmark cases.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
capability_negotiation_preflightread-only | Capability Negotiation Preflight; deterministic signed assessment over supplied input. |
capability_verificationread-only | Separate claimed capabilities from independently evidenced successful demonstrations.; 0.003 USDC. Deterministic, evidence-bounded and signed. |
company_enrichment_evidence | Company enrichment with free input preflight, provider attribution and signed evidence; 0.005 USDC. |
concurrency_guardread-only | Fail closed unless capacity counter is fresh and the request carries a lease plus idempotency binding; 0.002 USDC. |
conflict_resolution | Resolve or abstain; every candidate must bind source, value hash, observation time and bounded confidence; 0.003 USDC. |
contact_enrichment_evidence | Business-contact enrichment with free input preflight, identity limitations and signed receipt; 0.007 USDC. |
context_provenance_labeler | Hash and label context integrity, confidentiality and source; 0.002 USDC. |
counterparty_risk_preflight | Deterministic counterparty policy preflight using supplied reputation evidence and transaction limits; 0.003 USDC. |
cross_agent_receipt_bundleread-only | Cross-Agent Receipt Bundle; deterministic signed assessment over supplied input. |
cross_protocol_receiptread-only | Bundle consistent transaction commitments across multiple protocols.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
data_egress_preflight | Inspect outbound agent data and destination before transmission; 0.002 USDC. |
data_freshness_certificate | Certify freshness only when timestamp is bound to source URI and a 64-hex content hash; 0.002 USDC. |
delegated_credential_guardread-only | Delegated Credential Guard; deterministic signed assessment over supplied input. |
delegated_spend_policyread-only | Fail closed when delegated authority, per-call limit or remaining budget is insufficient.; 0.003 USDC. Deterministic, evidence-bounded and signed. |
delegation_scope_guard | Least-privilege guard for agent-to-agent delegation scope, destinations, budget and expiry; 0.003 USDC. |
delivery_evidenceread-only | Bind successful delivery to transaction, request and matching 64-hex expected/observed content hashes without echoing content; 0.003 USDC. |
dependency_provenance_assessment | Fail closed on empty dependency sets or absent registry policy; distinguish digest declarations from verified provenance; 0.003 USDC. |
document_to_verified_json | Public text, HTML, JSON or XML normalized to source-backed JSON; no OCR; 0.010 USDC. |
domain_ownership_evidence | Require a fresh domain-bound DNS-01/HTTP-01 challenge and separate control from legal ownership; 0.003 USDC. |
duplicate_charge_detectorread-only | Detect repeated transaction hashes, payment identifiers and idempotent intents; 0.003 USDC. |
durable_agent_taskread-only | Durable Agent Task; deterministic signed assessment over supplied input. |
dynamic_service_pricingread-only | Propose a capped shadow price without changing the live catalog.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
economic_loop_detectorread-only | Detect self-transfer and reciprocal economic patterns without presenting correlation as fraud.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
entity_enrichment_evidence | Source-bounded entity field coverage with explicit missing facts; 0.008 USDC. |
erc8004_identity_evidenceread-only | Bind an ERC-8004 registry identity to evidence while separating registration from ownership.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
erc8004_reputation_intelligenceread-only | Aggregate diverse verified reputation observations with low-sample abstention.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
execution_cost_estimatorread-only | Execution Cost Estimator; deterministic signed assessment over supplied input. |
fetch_evidenceread-only | Independently fetch bounded public evidence with redirect/DNS/connected-address SSRF checks, hashes and injection screening; 0.004 USDC. |
human_approval_policy | Classify an action as automatic, approval-required or denied; 0.002 USDC. |
idempotency_replay_guard | Detect safe replays and conflicting idempotency-key reuse; 0.002 USDC. |
index_feedread-only | Canonical catalog snapshot or digest-based delta with exact HTTP/MCP records, PHION Execute templates and signed evidence; 0.005 USDC. |
inspect_agentread-only | Pre-payment agent inspection across x402, A2A, ERC-8004, OpenAPI and MCP; failed inspections are not charged; 0.009 USDC. |
inter_agent_policy_evaluatorread-only | Require policy identity, subject, action, lifetime and valid decisions; compute the restrictive cap and shared actions; 0.003 USDC. |
interrupted_task_recovery | Resume only when task/checkpoint identity, sequence, deadline, attempt budget, idempotency and side effects are explicit; 0.003 USDC. |
journey_verifyread-only | Verify hash continuity, timestamps and ordered intent→quote→payment→delivery lifecycle; 0.010 USDC. |
live_data_freshness | Evaluate live source observation against explicit maximum age; 0.002 USDC. |
mandate_reserve | Atomic spending reservation with cumulative cap and conflict-safe idempotency; 0.004 USDC. |
manifest_version_diff | Recursive manifest diff that requires explicit versions and flags sensitive changes without a version advance; 0.002 USDC. |
market_data_snapshot | Timestamped public market-data snapshot with provenance; 0.005 USDC. |
market_demand_predictorread-only | Forecast verified demand trends while abstaining on insufficient history.; 0.005 USDC. Deterministic, evidence-bounded and signed. |
mcp_2026_compatibility_gatewayread-only | MCP 2026 Compatibility Gateway; deterministic signed assessment over supplied input. |
mcp_a2a_task_bridgeread-only | MCP-A2A Task Bridge; deterministic signed assessment over supplied input. |
mcp_catalog_cache_guardread-only | MCP Catalog Cache Guard; deterministic signed assessment over supplied input. |
mcp_manifest_firewall | Inspect an MCP manifest before installation or trust; 0.002 USDC. |
mcp_server_identity_evidence | Bind MCP domain, endpoint, manifest, key and version; 0.003 USDC. |
mcp_transaction_gatewayread-only | Bind an MCP tool call to transaction evidence without granting undeclared authority.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
memory_write_guard | Screen persistent memory writes for poisoning, unsafe instructions and missing provenance; 0.002 USDC. |
multi_agent_escrowread-only | Recommend hold or release from evidence without PHION custody or fund movement.; 0.005 USDC. Deterministic, evidence-bounded and signed. |
multi_source_fact_bundle | Independent source observations with agreement made explicit; 0.005 USDC. |
oauth_issuer_binding_evidenceread-only | OAuth Issuer Binding Evidence; deterministic signed assessment over supplied input. |
oauth_token_audience_guard | Validate declared OAuth audience and issuer; never send raw tokens; 0.002 USDC. |
onchain_evidence | Public explorer or RPC response evidence with immutable hashes; 0.004 USDC. |
payment_capability_preflightread-only | Free anonymous non-blocking self-report of wallet, mandate, x402 v2, network, asset, account kind and funding readiness. Detects EVM account types incompatible with exact EIP-3009 before signature. Stores only a daily pseudonymous actor and normalized reason; never a wallet, balance, signature or request content. |
payment_delivery_atomicityread-only | Payment Delivery Atomicity; deterministic signed assessment over supplied input. |
payment_diagnose | Free diagnosis of the exact payment-funnel stage and machine-readable recovery actions for any PHION service. |
payment_optimizerread-only | Rank only integration-tested payment routes under explicit cost and latency constraints.; 0.003 USDC. Deterministic, evidence-bounded and signed. |
payment_preflightread-only | Fail-closed x402 v2 firewall for network, asset, recipient, amount, scheme, resource host and expiry; 0.002 USDC. |
payment_receipt_reconcilerread-only | Compare canonical and common x402 payment/receipt aliases, settlement state and coverage; 0.003 USDC. |
payment_route_selectorread-only | Reject impossible x402 routes, rank safe eligible routes by policy and return the exact next payment action; read-only, deterministic, 0.002 USDC. |
person_enrichment_evidence | Person enrichment with free input preflight, provider attribution, likelihood, limitations and signed receipt; 0.006 USDC. |
phion_discoverread-only | Free complete PHION service index generated from canonical inventory. Use when the agent knows a capability or wants to inspect the full network. |
phion_enrichread-only | Enrich a company, person or contact through an attributed provider route without hiding upstream cost.; 0.120 USDC. Deterministic, evidence-bounded and signed. |
phion_enrich_basicread-only | Observe a public company domain directly and return bounded website metadata, hashes, injection screening and signed delivery without an expensive enrichment upstream.; 0.003 USDC. Deterministic, evidence-bounded and signed. |
phion_execute | Universal PHION execution gateway: enforce a budget and persistent idempotency, execute one selected PHION service, evaluate acceptance criteria, and return a signed completion envelope. No gateway surcharge; the selected service price applies. |
phion_get_serviceread-only | Retrieve one exact canonical PHION service contract by service id or MCP tool name. |
phion_inferenceread-only | Complete a bounded inference microtask and return a directly usable answer with signed delivery.; 0.001 USDC. Deterministic, evidence-bounded and signed. |
phion_intelligenceread-only | Search, synthesize and cite evidence in one call, minimizing residual agent work.; 0.012 USDC. Deterministic, evidence-bounded and signed. |
phion_preflightread-only | Free service-specific schema, network, budget and economic preflight. It does not execute or charge. |
phion_resolveread-only | Free provider-neutral capability resolution across eligible payment rails. Applies constraints, preserves UNKNOWN and abstains when evidence is insufficient. Advisory only: never authorizes payment or execution. |
phion_searchread-only | Search the live web and return normalized source URLs and snippets with signed delivery.; 0.006 USDC. Deterministic, evidence-bounded and signed. |
phion_search_servicesread-only | Search the complete canonical PHION inventory by task, capability, protocol or maximum advertised price without selecting or charging. |
portable_observability_audit | Validate event identity, timestamps, hash chain and W3C-compatible lowercase nonzero trace/span identifiers; 0.004 USDC. |
preflight | Free URL safety and reachability check. |
price_discovery_engineread-only | Derive price bands only from settled observations, never traffic or unsigned quotes.; 0.005 USDC. Deterministic, evidence-bounded and signed. |
proof_of_serviceread-only | Commit request, authority, execution, payment and delivery evidence in one proof.; 0.005 USDC. Deterministic, evidence-bounded and signed. |
provider_quality_predictorread-only | Estimate provider success, quality, latency and cost using transparent sample-aware statistics.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
purpose_bound_consent | Fail-closed consent bound to ID, subject, recipient, purpose, scope, issue/expiry and checked revocation state; 0.003 USDC. |
quote_freshness_guardread-only | Quote Freshness Guard; deterministic signed assessment over supplied input. |
redirect_callback_validator | Validate HTTPS callbacks and redirect host allowlists; 0.002 USDC. |
reputation_update_receiptread-only | Recommend a bounded auditable reputation update from verified outcome evidence.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
resource_cycle_guardread-only | Require per-step identity, token and cost counters; detect repeated nodes/edges and enforce all three hard caps; 0.002 USDC. |
retention_deletion_receipt | Separate requested, operator-completed and evidence-verified retention/deletion states using content and evidence hashes; 0.003 USDC. |
rwa_asset_due_diligenceread-only | Fail-closed issuer, contract, jurisdiction, custody and documentation coverage with independently fetched evidence; 0.019 USDC. |
rwa_complianceread-only | Fail-closed RWA transfer decision requiring explicit jurisdiction, KYC, allowlist, limit and transfer-window checks; 0.012 USDC. |
rwa_corporate_actions | Detect and sign material RWA changes in NAV, income, maturity, redemption or freeze state; 0.012 USDC. |
rwa_nav_reserve | Compare declared NAV and reserve ratios with structured observed facts plus independently fetched evidence; returns discrepancies in basis points and fails closed on incomplete evidence; 0.015 USDC. |
rwa_sanctions_screening_evidence | Evidence-based literal subject screening against observed official US/EU sanctions sources; 0.015 USDC. Not legal clearance or wallet attribution. |
rwa_transaction_assurance | Verify an RWA asset, payment, delivery and transfer restrictions; 0.020 USDC. |
schema_normalizeread-only | Safe alias normalization that refuses ambiguous canonical/alias collisions and never changes payment values; 0.001 USDC. |
schema_normalize_free | Free, rate-limited payload validation and safe key normalization before payment. Payment-critical values are never changed. |
secret_redaction_preflight | Detect and redact common secret indicators before transmission; 0.002 USDC. |
service_failover_selectorread-only | Service Failover Selector; deterministic signed assessment over supplied input. |
service_gap_detectorread-only | Detect capability shortages using verified demand and verified provider supply.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
service_sla_attestation | Sign availability and latency calculations from bounded samples; 0.004 USDC. |
signed_result_comparator | Compare agent results and sign agreement or conflict; 0.003 USDC. |
sla_risk_predictorread-only | Estimate SLA failure probability from bounded success and latency evidence.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
social_source_evidence | Attributable public social-source observations with identity limitations; 0.006 USDC. |
source_backed_search | Literal search over supplied public sources with citations and hashes; 0.004 USDC. |
subscription_spend_guardread-only | Bind one recurring charge to approval, merchant, due time and per-charge/period budgets; 0.003 USDC. |
sybil_reputation_guardread-only | Combine multiple bounded Sybil signals while abstaining without independent evidence.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
task_cancel_assuranceread-only | Task Cancel Assurance; deterministic signed assessment over supplied input. |
task_checkpoint_evidenceread-only | Task Checkpoint Evidence; deterministic signed assessment over supplied input. |
task_lease_guardread-only | Task Lease Guard; deterministic signed assessment over supplied input. |
tool_call_policy_guard | Bind a proposed tool call to declared intent and execution policy; 0.002 USDC. |
tool_capability_drift_monitor | Detect tool capability or manifest drift; 0.002 USDC. |
tool_output_firewall | Inspect untrusted MCP/tool output before it enters agent context or triggers an action; 0.002 USDC. |
tool_result_schema_validatorread-only | Tool Result Schema Validator; deterministic signed assessment over supplied input. |
transaction_assuranceread-only | End-to-end settlement, timestamp, delivery-hash and deterministic acceptance assurance; 0.015 USDC. |
transaction_recoveryread-only | Failure classification and non-repeating recovery plan with validated attempt history; 0.010 USDC. |
transaction_recovery_v2read-only | Recommend bounded recovery and reconcile ambiguous payments before retry.; 0.005 USDC. Deterministic, evidence-bounded and signed. |
transaction_risk_scoreread-only | Estimate evidence-supported loss probability without selling insurance or assuming liability.; 0.004 USDC. Deterministic, evidence-bounded and signed. |
trust_anomaly_detectorread-only | Detect material drift between comparable trust vectors without asserting misconduct.; 0.003 USDC. Deterministic, evidence-bounded and signed. |
try_service | Free representative preview, exact price and upgrade instructions for any PHION paid service; no wallet required. |
verified_news_monitor | Literal query evidence across bounded public news sources; 0.006 USDC. |
verified_web_extract | Bounded public web extraction with source, timestamp and hashes; 0.003 USDC. |
verifyread-only | Free verification of a PHION signed receipt. |
webhook_verifierread-only | Fail-closed RFC 9421-style webhook preflight requiring trusted key, algorithm, nonce, freshness, replay status and signature coverage of method, target and content; 0.003 USDC. |
x402_quote_comparatorread-only | Validate x402 v2 fields and compare only quotes sharing asset and decimals; 0.002 USDC. |
x402_v2_routerread-only | Select an exactly compatible x402 v2 payment requirement without receiving private keys.; 0.003 USDC. Deterministic, evidence-bounded and signed. |
Schemas: list_tools.
{
"name": "systems.phion/evidence-engine",
"title": "PHION Agent Trust Infrastructure",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://phion.systems/mcp",
"type": "streamable-http"
}
],
"version": "1.57.0",
"websiteUrl": "https://phion.systems",
"description": "123 agent services with free discovery, intent, x402 terms and signed verification."
}