systems.phion/evidence-engine

Tools

• a2a_transaction_bridge

  Bind an A2A task to a transaction without silently transferring authority.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• abandoned_tool_detector

  Require stale success plus multiple independent failed probes before classifying likely abandonment; 0.003 USDC.

  shallow
• agent_approval_relay

  Agent Approval Relay; deterministic signed assessment over supplied input.

  shallow
• agent_behavior_fingerprint

  Create a privacy-minimized behavioral commitment without retaining payloads or raw identifiers.; 0.003 USDC. Deterministic, evidence-bounded and signed.

  shallow
• agent_budget_guard

  Enforce per-call, task, session and period budgets; 0.002 USDC.

  shallow
• agent_economic_graph

  Build privacy-bounded economic relationships only from supplied nodes and edges.; 0.005 USDC. Deterministic, evidence-bounded and signed.

  shallow
• agent_memory_provenance

  Agent Memory Provenance; deterministic signed assessment over supplied input.

  shallow
• agent_rate_limit_negotiator

  Agent Rate Limit Negotiator; deterministic signed assessment over supplied input.

  shallow
• agent_reputation_evidence

  Evidence-bounded agent reputation assessment with confidence, coverage, provenance limitations and a signed receipt; 0.005 USDC.

  shallow
• agent_session_continuity

  Agent Session Continuity; deterministic signed assessment over supplied input.

  shallow
• agent_task_handoff_receipt

  Sign a bounded agent-task handoff; 0.003 USDC.

  shallow
• ap2_mandate_bridge

  Map mandate fields for review without advertising unsupported AP2 production authorization.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• attest

  x402 paid signed JSON attestation; 0.001 USDC on Base.

  shallow
• automated_dispute_bundle

  Assemble failure evidence and recommend resolution without executing refunds.; 0.005 USDC. Deterministic, evidence-bounded and signed.

  shallow
• autonomous_procurement

  Recommend a verified eligible provider under a mandate without purchasing.; 0.005 USDC. Deterministic, evidence-bounded and signed.

  shallow
• capability_benchmark

  Measure reproducible success, latency and cost from versioned evidence-bound benchmark cases.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• capability_negotiation_preflight

  Capability Negotiation Preflight; deterministic signed assessment over supplied input.

  shallow
• capability_verification

  Separate claimed capabilities from independently evidenced successful demonstrations.; 0.003 USDC. Deterministic, evidence-bounded and signed.

  shallow
• company_enrichment_evidence

  Company enrichment from domain, profile, ticker or name with provider attribution and signed evidence; 0.005 USDC.

  shallow
• concurrency_guard

  Fail closed unless capacity counter is fresh and the request carries a lease plus idempotency binding; 0.002 USDC.

  shallow
• conflict_resolution

  Resolve or abstain; every candidate must bind source, value hash, observation time and bounded confidence; 0.003 USDC.

  shallow
• contact_enrichment_evidence

  Business-contact enrichment from strong identifiers with explicit identity limitations and a signed receipt; 0.007 USDC.

  shallow
• context_provenance_labeler

  Hash and label context integrity, confidentiality and source; 0.002 USDC.

  shallow
• counterparty_risk_preflight

  Deterministic counterparty policy preflight using supplied reputation evidence and transaction limits; 0.003 USDC.

  shallow
• cross_agent_receipt_bundle

  Cross-Agent Receipt Bundle; deterministic signed assessment over supplied input.

  shallow
• cross_protocol_receipt

  Bundle consistent transaction commitments across multiple protocols.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• data_egress_preflight

  Inspect outbound agent data and destination before transmission; 0.002 USDC.

  shallow
• data_freshness_certificate

  Certify freshness only when timestamp is bound to source URI and a 64-hex content hash; 0.002 USDC.

  shallow
• delegated_credential_guard

  Delegated Credential Guard; deterministic signed assessment over supplied input.

  shallow
• delegated_spend_policy

  Fail closed when delegated authority, per-call limit or remaining budget is insufficient.; 0.003 USDC. Deterministic, evidence-bounded and signed.

  shallow
• delegation_scope_guard

  Least-privilege guard for agent-to-agent delegation scope, destinations, budget and expiry; 0.003 USDC.

  shallow
• delivery_evidence

  Bind successful delivery to transaction, request and matching 64-hex expected/observed content hashes without echoing content; 0.003 USDC.

  shallow
• dependency_provenance_assessment

  Fail closed on empty dependency sets or absent registry policy; distinguish digest declarations from verified provenance; 0.003 USDC.

  shallow
• document_to_verified_json

  Public text, HTML, JSON or XML normalized to source-backed JSON; no OCR; 0.010 USDC.

  shallow
• domain_ownership_evidence

  Require a fresh domain-bound DNS-01/HTTP-01 challenge and separate control from legal ownership; 0.003 USDC.

  shallow
• duplicate_charge_detector

  Detect repeated transaction hashes, payment identifiers and idempotent intents; 0.003 USDC.

  shallow
• durable_agent_task

  Durable Agent Task; deterministic signed assessment over supplied input.

  shallow
• dynamic_service_pricing

  Propose a capped shadow price without changing the live catalog.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• economic_loop_detector

  Detect self-transfer and reciprocal economic patterns without presenting correlation as fraud.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• entity_enrichment_evidence

  Source-bounded entity field coverage with explicit missing facts; 0.008 USDC.

  shallow
• erc8004_identity_evidence

  Bind an ERC-8004 registry identity to evidence while separating registration from ownership.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• erc8004_reputation_intelligence

  Aggregate diverse verified reputation observations with low-sample abstention.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• execution_cost_estimator

  Execution Cost Estimator; deterministic signed assessment over supplied input.

  shallow
• fetch_evidence

  Independently fetch bounded public evidence with redirect/DNS/connected-address SSRF checks, hashes and injection screening; 0.004 USDC.

  shallow
• human_approval_policy

  Classify an action as automatic, approval-required or denied; 0.002 USDC.

  shallow
• idempotency_replay_guard

  Detect safe replays and conflicting idempotency-key reuse; 0.002 USDC.

  shallow
• index_feed

  Canonical catalog snapshot or digest-based delta with exact HTTP/MCP records, PHION Execute templates and signed evidence; 0.005 USDC.

  shallow
• inspect_agent

  Pre-payment agent inspection across x402, A2A, ERC-8004, OpenAPI and MCP; failed inspections are not charged; 0.009 USDC.

  shallow
• inter_agent_policy_evaluator

  Require policy identity, subject, action, lifetime and valid decisions; compute the restrictive cap and shared actions; 0.003 USDC.

  shallow
• interrupted_task_recovery

  Resume only when task/checkpoint identity, sequence, deadline, attempt budget, idempotency and side effects are explicit; 0.003 USDC.

  shallow
• journey_verify

  Verify hash continuity, timestamps and ordered intent→quote→payment→delivery lifecycle; 0.010 USDC.

  shallow
• live_data_freshness

  Evaluate live source observation against explicit maximum age; 0.002 USDC.

  shallow
• mandate_reserve

  Atomic spending reservation with cumulative cap and conflict-safe idempotency; 0.004 USDC.

  shallow
• manifest_version_diff

  Recursive manifest diff that requires explicit versions and flags sensitive changes without a version advance; 0.002 USDC.

  shallow
• market_data_snapshot

  Timestamped public market-data snapshot with provenance; 0.005 USDC.

  shallow
• market_demand_predictor

  Forecast verified demand trends while abstaining on insufficient history.; 0.005 USDC. Deterministic, evidence-bounded and signed.

  shallow
• mcp_2026_compatibility_gateway

  MCP 2026 Compatibility Gateway; deterministic signed assessment over supplied input.

  shallow
• mcp_a2a_task_bridge

  MCP-A2A Task Bridge; deterministic signed assessment over supplied input.

  shallow
• mcp_catalog_cache_guard

  MCP Catalog Cache Guard; deterministic signed assessment over supplied input.

  shallow
• mcp_manifest_firewall

  Inspect an MCP manifest before installation or trust; 0.002 USDC.

  shallow
• mcp_server_identity_evidence

  Bind MCP domain, endpoint, manifest, key and version; 0.003 USDC.

  shallow
• mcp_transaction_gateway

  Bind an MCP tool call to transaction evidence without granting undeclared authority.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• memory_write_guard

  Screen persistent memory writes for poisoning, unsafe instructions and missing provenance; 0.002 USDC.

  shallow
• multi_agent_escrow

  Recommend hold or release from evidence without PHION custody or fund movement.; 0.005 USDC. Deterministic, evidence-bounded and signed.

  shallow
• multi_source_fact_bundle

  Independent source observations with agreement made explicit; 0.005 USDC.

  shallow
• oauth_issuer_binding_evidence

  OAuth Issuer Binding Evidence; deterministic signed assessment over supplied input.

  shallow
• oauth_token_audience_guard

  Validate declared OAuth audience and issuer; never send raw tokens; 0.002 USDC.

  shallow
• onchain_evidence

  Public explorer or RPC response evidence with immutable hashes; 0.004 USDC.

  shallow
• payment_capability_preflight

  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.

  shallow
• payment_delivery_atomicity

  Payment Delivery Atomicity; deterministic signed assessment over supplied input.

  shallow
• payment_diagnose

  Free diagnosis of the exact payment-funnel stage and machine-readable recovery actions for any PHION service.

  shallow
• payment_optimizer

  Rank only integration-tested payment routes under explicit cost and latency constraints.; 0.003 USDC. Deterministic, evidence-bounded and signed.

  shallow
• payment_preflight

  Fail-closed x402 v2 firewall for network, asset, recipient, amount, scheme, resource host and expiry; 0.002 USDC.

  shallow
• payment_receipt_reconciler

  Compare canonical and common x402 payment/receipt aliases, settlement state and coverage; 0.003 USDC.

  shallow
• payment_route_selector

  Reject impossible x402 routes, rank safe eligible routes by policy and return the exact next payment action; read-only, deterministic, 0.002 USDC.

  shallow
• person_enrichment_evidence

  Person enrichment from strong identifiers with provider attribution, likelihood, limitations and a signed receipt; 0.006 USDC.

  shallow
• phion_discover

  Free complete PHION service index generated from canonical inventory. Use when the agent knows a capability or wants to inspect the full network.

  shallow
• phion_enrich

  Enrich a company, person or contact through an attributed provider route without hiding upstream cost.; 0.120 USDC. Deterministic, evidence-bounded and signed.

  shallow
• phion_enrich_basic

  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.

  shallow
• 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.

  shallow
• phion_get_service

  Retrieve one exact canonical PHION service contract by service id or MCP tool name.

  shallow
• phion_inference

  Complete a bounded inference microtask and return a directly usable answer with signed delivery.; 0.001 USDC. Deterministic, evidence-bounded and signed.

  shallow
• phion_intelligence

  Search, synthesize and cite evidence in one call, minimizing residual agent work.; 0.012 USDC. Deterministic, evidence-bounded and signed.

  shallow
• phion_preflight

  Free service-specific schema, network, budget and economic preflight. It does not execute or charge.

  shallow
• phion_resolve

  Free provider-neutral capability resolution. Applies eligibility constraints, preserves UNKNOWN and abstains when evidence is insufficient. Advisory only: never authorizes payment or execution.

  shallow
• phion_search

  Search the live web and return normalized source URLs and snippets with signed delivery.; 0.006 USDC. Deterministic, evidence-bounded and signed.

  shallow
• phion_search_services

  Search the complete canonical PHION inventory by task, capability, protocol or maximum advertised price without selecting or charging.

  shallow
• portable_observability_audit

  Validate event identity, timestamps, hash chain and W3C-compatible lowercase nonzero trace/span identifiers; 0.004 USDC.

  shallow
• preflight

  Free URL safety and reachability check.

  shallow
• price_discovery_engine

  Derive price bands only from settled observations, never traffic or unsigned quotes.; 0.005 USDC. Deterministic, evidence-bounded and signed.

  shallow
• proof_of_service

  Commit request, authority, execution, payment and delivery evidence in one proof.; 0.005 USDC. Deterministic, evidence-bounded and signed.

  shallow
• provider_quality_predictor

  Estimate provider success, quality, latency and cost using transparent sample-aware statistics.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• purpose_bound_consent

  Fail-closed consent bound to ID, subject, recipient, purpose, scope, issue/expiry and checked revocation state; 0.003 USDC.

  shallow
• quote_freshness_guard

  Quote Freshness Guard; deterministic signed assessment over supplied input.

  shallow
• redirect_callback_validator

  Validate HTTPS callbacks and redirect host allowlists; 0.002 USDC.

  shallow
• reputation_update_receipt

  Recommend a bounded auditable reputation update from verified outcome evidence.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• resource_cycle_guard

  Require per-step identity, token and cost counters; detect repeated nodes/edges and enforce all three hard caps; 0.002 USDC.

  shallow
• retention_deletion_receipt

  Separate requested, operator-completed and evidence-verified retention/deletion states using content and evidence hashes; 0.003 USDC.

  shallow
• rwa_asset_due_diligence

  Fail-closed issuer, contract, jurisdiction, custody and documentation coverage with independently fetched evidence; 0.019 USDC.

  shallow
• rwa_compliance

  Fail-closed RWA transfer decision requiring explicit jurisdiction, KYC, allowlist, limit and transfer-window checks; 0.012 USDC.

  shallow
• rwa_corporate_actions

  Detect and sign material RWA changes in NAV, income, maturity, redemption or freeze state; 0.012 USDC.

  shallow
• 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.

  shallow
• 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.

  shallow
• rwa_transaction_assurance

  Verify an RWA asset, payment, delivery and transfer restrictions; 0.020 USDC.

  shallow
• schema_normalize

  Safe alias normalization that refuses ambiguous canonical/alias collisions and never changes payment values; 0.001 USDC.

  shallow
• schema_normalize_free

  Free, rate-limited payload validation and safe key normalization before payment. Payment-critical values are never changed.

  shallow
• secret_redaction_preflight

  Detect and redact common secret indicators before transmission; 0.002 USDC.

  shallow
• service_failover_selector

  Service Failover Selector; deterministic signed assessment over supplied input.

  shallow
• service_gap_detector

  Detect capability shortages using verified demand and verified provider supply.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• service_sla_attestation

  Sign availability and latency calculations from bounded samples; 0.004 USDC.

  shallow
• signed_result_comparator

  Compare agent results and sign agreement or conflict; 0.003 USDC.

  shallow
• sla_risk_predictor

  Estimate SLA failure probability from bounded success and latency evidence.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• social_source_evidence

  Attributable public social-source observations with identity limitations; 0.006 USDC.

  shallow
• source_backed_search

  Literal search over supplied public sources with citations and hashes; 0.004 USDC.

  shallow
• subscription_spend_guard

  Bind one recurring charge to approval, merchant, due time and per-charge/period budgets; 0.003 USDC.

  shallow
• sybil_reputation_guard

  Combine multiple bounded Sybil signals while abstaining without independent evidence.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• task_cancel_assurance

  Task Cancel Assurance; deterministic signed assessment over supplied input.

  shallow
• task_checkpoint_evidence

  Task Checkpoint Evidence; deterministic signed assessment over supplied input.

  shallow
• task_lease_guard

  Task Lease Guard; deterministic signed assessment over supplied input.

  shallow
• tool_call_policy_guard

  Bind a proposed tool call to declared intent and execution policy; 0.002 USDC.

  shallow
• tool_capability_drift_monitor

  Detect tool capability or manifest drift; 0.002 USDC.

  shallow
• tool_output_firewall

  Inspect untrusted MCP/tool output before it enters agent context or triggers an action; 0.002 USDC.

  shallow
• tool_result_schema_validator

  Tool Result Schema Validator; deterministic signed assessment over supplied input.

  shallow
• transaction_assurance

  End-to-end settlement, timestamp, delivery-hash and deterministic acceptance assurance; 0.015 USDC.

  shallow
• transaction_recovery

  Failure classification and non-repeating recovery plan with validated attempt history; 0.010 USDC.

  shallow
• transaction_recovery_v2

  Recommend bounded recovery and reconcile ambiguous payments before retry.; 0.005 USDC. Deterministic, evidence-bounded and signed.

  shallow
• transaction_risk_score

  Estimate evidence-supported loss probability without selling insurance or assuming liability.; 0.004 USDC. Deterministic, evidence-bounded and signed.

  shallow
• trust_anomaly_detector

  Detect material drift between comparable trust vectors without asserting misconduct.; 0.003 USDC. Deterministic, evidence-bounded and signed.

  shallow
• try_service

  Free representative preview, exact price and upgrade instructions for any PHION paid service; no wallet required.

  shallow
• verified_news_monitor

  Literal query evidence across bounded public news sources; 0.006 USDC.

  shallow
• verified_web_extract

  Bounded public web extraction with source, timestamp and hashes; 0.003 USDC.

  shallow
• verify

  Free verification of a PHION signed receipt.

  shallow
• webhook_verifier

  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.

  shallow
• x402_quote_comparator

  Validate x402 v2 fields and compare only quotes sharing asset and decimals; 0.002 USDC.

  shallow
• x402_v2_router

  Select an exactly compatible x402 v2 payment requirement without receiving private keys.; 0.003 USDC. Deterministic, evidence-bounded and signed.

  shallow

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