MCP serversystems.phion/evidence-engine

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

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

Agent Approval Relay; deterministic signed assessment over supplied input.

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

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

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

Agent Memory Provenance; deterministic signed assessment over supplied input.

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

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

Agent Session Continuity; deterministic signed assessment over supplied input.

Sign a bounded agent-task handoff; 0.003 USDC.

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

x402 paid signed JSON attestation; 0.001 USDC on Base.

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

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

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

Capability Negotiation Preflight; deterministic signed assessment over supplied input.

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

Company enrichment with free input preflight, provider attribution and signed evidence; 0.005 USDC.

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

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

Business-contact enrichment with free input preflight, identity limitations and signed receipt; 0.007 USDC.

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

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

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

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

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

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

Delegated Credential Guard; deterministic signed assessment over supplied input.

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

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

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

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

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

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

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

Durable Agent Task; deterministic signed assessment over supplied input.

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

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

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

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

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

Execution Cost Estimator; deterministic signed assessment over supplied input.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Independent source observations with agreement made explicit; 0.005 USDC.

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

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

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

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

Payment Delivery Atomicity; deterministic signed assessment over supplied input.

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

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

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

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

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 with free input preflight, provider attribution, likelihood, limitations and signed receipt; 0.006 USDC.

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

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

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.

Universal PHION execution gateway: enforce a budget and persistent idempotency, execute one selected PHION service, evaluate acceptance criteria, and return a signed completion env

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

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

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

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

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

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

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

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

Free URL safety and reachability check.

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

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

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

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

Quote Freshness Guard; deterministic signed assessment over supplied input.

Validate HTTPS callbacks and redirect host allowlists; 0.002 USDC.

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

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

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

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

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

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

Compare declared NAV and reserve ratios with structured observed facts plus independently fetched evidence; returns discrepancies in basis points and fails closed on incomplete evi

Evidence-based literal subject screening against observed official US/EU sanctions sources; 0.015 USDC. Not legal clearance or wallet attribution.

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

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

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

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

Service Failover Selector; deterministic signed assessment over supplied input.

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

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

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

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

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

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

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

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

Task Cancel Assurance; deterministic signed assessment over supplied input.

Task Checkpoint Evidence; deterministic signed assessment over supplied input.

Task Lease Guard; deterministic signed assessment over supplied input.

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

Detect tool capability or manifest drift; 0.002 USDC.

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

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

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

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

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

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

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

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

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

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

Free verification of a PHION signed receipt.

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.

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

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