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PHION RWA

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try_service

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

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "service": "<service>"
    },
    "name": "try_service"
  }
}

Input Schema

NameRequiredDescriptionDefault
serviceYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / properties / service / enum
      Previous value: -[
-  "attest",
-  "payment-firewall",
-  "web-evidence",
-  "mandate-reserve",
-  "agent-inspection",
-  "commerce-journey",
-  "transaction-assurance",
-  "transaction-recovery",
-  "rwa-asset-due-diligence",
-  "rwa-compliance",
-  "rwa-nav-reserve",
-  "rwa-transaction-assurance",
-  "rwa-corporate-actions",
-  "schema-normalize",
-  "sanctions-screening-evidence",
-  "agent-reputation-evidence",
-  "counterparty-risk-preflight",
-  "tool-output-firewall",
-  "delegation-scope-guard",
-  "memory-write-guard",
-  "mcp-manifest-firewall",
-  "tool-call-policy-guard",
-  "data-egress-preflight",
-  "agent-budget-guard",
-  "idempotency-replay-guard",
-  "human-approval-policy",
-  "secret-redaction-preflight",
-  "oauth-token-audience-guard",
-  "redirect-callback-validator",
-  "tool-capability-drift-monitor",
-  "mcp-server-identity-evidence",
-  "agent-task-handoff-receipt",
-  "context-provenance-labeler",
-  "signed-result-comparator",
-  "service-sla-attestation",
-  "payment-route-selector",
-  "x402-quote-comparator",
-  "payment-receipt-reconciler",
-  "duplicate-charge-detector",
-  "subscription-spend-guard",
-  "webhook-verifier",
-  "delivery-evidence",
-  "inter-agent-policy-evaluator",
-  "concurrency-guard",
-  "resource-cycle-guard",
-  "abandoned-tool-detector",
-  "manifest-version-diff",
-  "dependency-provenance-assessment",
-  "conflict-resolution",
-  "data-freshness-certificate",
-  "domain-ownership-evidence",
-  "purpose-bound-consent",
-  "retention-deletion-receipt",
-  "interrupted-task-recovery",
-  "portable-observability-audit",
-  "index-feed",
-  "verified-web-extract",
-  "entity-enrichment-evidence",
-  "social-source-evidence",
-  "market-data-snapshot",
-  "onchain-evidence",
-  "verified-news-monitor",
-  "multi-source-fact-bundle",
-  "document-to-verified-json",
-  "source-backed-search",
-  "live-data-freshness",
-  "person-enrichment-evidence",
-  "company-enrichment-evidence",
-  "contact-enrichment-evidence",
-  "mcp-2026-compatibility-gateway",
-  "durable-agent-task",
-  "task-checkpoint-evidence",
-  "task-cancel-assurance",
-  "agent-approval-relay",
-  "capability-negotiation-preflight",
-  "mcp-catalog-cache-guard",
-  "oauth-issuer-binding-evidence",
-  "mcp-a2a-task-bridge",
-  "quote-freshness-guard",
-  "delegated-credential-guard",
-  "agent-session-continuity",
-  "task-lease-guard",
-  "tool-result-schema-validator",
-  "agent-memory-provenance",
-  "payment-delivery-atomicity",
-  "service-failover-selector",
-  "agent-rate-limit-negotiator",
-  "execution-cost-estimator",
-  "cross-agent-receipt-bundle",
-  "capability-verification",
-  "capability-benchmark",
-  "sybil-reputation-guard",
-  "agent-behavior-fingerprint",
-  "trust-anomaly-detector",
-  "economic-loop-detector",
-  "provider-quality-predictor",
-  "transaction-risk-score",
-  "payment-optimizer",
-  "x402-v2-router",
-  "erc8004-identity-evidence",
-  "erc8004-reputation-intelligence",
-  "delegated-spend-policy",
-  "ap2-mandate-bridge",
-  "a2a-transaction-bridge",
-  "mcp-transaction-gateway",
-  "proof-of-service",
-  "automated-dispute-bundle",
-  "transaction-recovery-v2",
-  "reputation-update-receipt",
-  "agent-economic-graph",
-  "market-demand-predictor",
-  "service-gap-detector",
-  "price-discovery-engine",
-  "sla-risk-predictor",
-  "dynamic-service-pricing",
-  "autonomous-procurement",
-  "multi-agent-escrow",
-  "cross-protocol-receipt",
-  "phion-inference",
-  "phion-search",
-  "phion-enrich",
-  "phion-intelligence"
-]New value: +[
+  "attest",
+  "payment-firewall",
+  "web-evidence",
+  "mandate-reserve",
+  "agent-inspection",
+  "commerce-journey",
+  "transaction-assurance",
+  "transaction-recovery",
+  "rwa-asset-due-diligence",
+  "rwa-compliance",
+  "rwa-nav-reserve",
+  "rwa-transaction-assurance",
+  "rwa-corporate-actions",
+  "schema-normalize",
+  "sanctions-screening-evidence",
+  "agent-reputation-evidence",
+  "counterparty-risk-preflight",
+  "tool-output-firewall",
+  "delegation-scope-guard",
+  "memory-write-guard",
+  "mcp-manifest-firewall",
+  "tool-call-policy-guard",
+  "data-egress-preflight",
+  "agent-budget-guard",
+  "idempotency-replay-guard",
+  "human-approval-policy",
+  "secret-redaction-preflight",
+  "oauth-token-audience-guard",
+  "redirect-callback-validator",
+  "tool-capability-drift-monitor",
+  "mcp-server-identity-evidence",
+  "agent-task-handoff-receipt",
+  "context-provenance-labeler",
+  "signed-result-comparator",
+  "service-sla-attestation",
+  "payment-route-selector",
+  "x402-quote-comparator",
+  "payment-receipt-reconciler",
+  "duplicate-charge-detector",
+  "subscription-spend-guard",
+  "webhook-verifier",
+  "delivery-evidence",
+  "inter-agent-policy-evaluator",
+  "concurrency-guard",
+  "resource-cycle-guard",
+  "abandoned-tool-detector",
+  "manifest-version-diff",
+  "dependency-provenance-assessment",
+  "conflict-resolution",
+  "data-freshness-certificate",
+  "domain-ownership-evidence",
+  "purpose-bound-consent",
+  "retention-deletion-receipt",
+  "interrupted-task-recovery",
+  "portable-observability-audit",
+  "index-feed",
+  "verified-web-extract",
+  "entity-enrichment-evidence",
+  "social-source-evidence",
+  "market-data-snapshot",
+  "onchain-evidence",
+  "verified-news-monitor",
+  "multi-source-fact-bundle",
+  "document-to-verified-json",
+  "source-backed-search",
+  "live-data-freshness",
+  "person-enrichment-evidence",
+  "company-enrichment-evidence",
+  "contact-enrichment-evidence",
+  "mcp-2026-compatibility-gateway",
+  "durable-agent-task",
+  "task-checkpoint-evidence",
+  "task-cancel-assurance",
+  "agent-approval-relay",
+  "capability-negotiation-preflight",
+  "mcp-catalog-cache-guard",
+  "oauth-issuer-binding-evidence",
+  "mcp-a2a-task-bridge",
+  "quote-freshness-guard",
+  "delegated-credential-guard",
+  "agent-session-continuity",
+  "task-lease-guard",
+  "tool-result-schema-validator",
+  "agent-memory-provenance",
+  "payment-delivery-atomicity",
+  "service-failover-selector",
+  "agent-rate-limit-negotiator",
+  "execution-cost-estimator",
+  "cross-agent-receipt-bundle",
+  "capability-verification",
+  "capability-benchmark",
+  "sybil-reputation-guard",
+  "agent-behavior-fingerprint",
+  "trust-anomaly-detector",
+  "economic-loop-detector",
+  "provider-quality-predictor",
+  "transaction-risk-score",
+  "payment-optimizer",
+  "x402-v2-router",
+  "erc8004-identity-evidence",
+  "erc8004-reputation-intelligence",
+  "delegated-spend-policy",
+  "ap2-mandate-bridge",
+  "a2a-transaction-bridge",
+  "mcp-transaction-gateway",
+  "proof-of-service",
+  "automated-dispute-bundle",
+  "transaction-recovery-v2",
+  "reputation-update-receipt",
+  "agent-economic-graph",
+  "market-demand-predictor",
+  "service-gap-detector",
+  "price-discovery-engine",
+  "sla-risk-predictor",
+  "dynamic-service-pricing",
+  "autonomous-procurement",
+  "multi-agent-escrow",
+  "cross-protocol-receipt",
+  "phion-inference",
+  "phion-search",
+  "phion-enrich-basic",
+  "phion-enrich",
+  "phion-intelligence"
+]
  2. Changed1 schema field changed
    • changedInput schema / properties / service / enum
      Previous value: -[
-  "attest",
-  "payment-firewall",
-  "web-evidence",
-  "mandate-reserve",
-  "agent-inspection",
-  "commerce-journey",
-  "transaction-assurance",
-  "transaction-recovery",
-  "rwa-asset-due-diligence",
-  "rwa-compliance",
-  "rwa-nav-reserve",
-  "rwa-transaction-assurance",
-  "rwa-corporate-actions",
-  "schema-normalize",
-  "sanctions-screening-evidence",
-  "agent-reputation-evidence",
-  "counterparty-risk-preflight",
-  "tool-output-firewall",
-  "delegation-scope-guard",
-  "memory-write-guard",
-  "mcp-manifest-firewall",
-  "tool-call-policy-guard",
-  "data-egress-preflight",
-  "agent-budget-guard",
-  "idempotency-replay-guard",
-  "human-approval-policy",
-  "secret-redaction-preflight",
-  "oauth-token-audience-guard",
-  "redirect-callback-validator",
-  "tool-capability-drift-monitor",
-  "mcp-server-identity-evidence",
-  "agent-task-handoff-receipt",
-  "context-provenance-labeler",
-  "signed-result-comparator",
-  "service-sla-attestation",
-  "payment-route-selector",
-  "x402-quote-comparator",
-  "payment-receipt-reconciler",
-  "duplicate-charge-detector",
-  "subscription-spend-guard",
-  "webhook-verifier",
-  "delivery-evidence",
-  "inter-agent-policy-evaluator",
-  "concurrency-guard",
-  "resource-cycle-guard",
-  "abandoned-tool-detector",
-  "manifest-version-diff",
-  "dependency-provenance-assessment",
-  "conflict-resolution",
-  "data-freshness-certificate",
-  "domain-ownership-evidence",
-  "purpose-bound-consent",
-  "retention-deletion-receipt",
-  "interrupted-task-recovery",
-  "portable-observability-audit",
-  "index-feed",
-  "verified-web-extract",
-  "entity-enrichment-evidence",
-  "social-source-evidence",
-  "market-data-snapshot",
-  "onchain-evidence",
-  "verified-news-monitor",
-  "multi-source-fact-bundle",
-  "document-to-verified-json",
-  "source-backed-search",
-  "live-data-freshness",
-  "person-enrichment-evidence",
-  "company-enrichment-evidence",
-  "contact-enrichment-evidence",
-  "mcp-2026-compatibility-gateway",
-  "durable-agent-task",
-  "task-checkpoint-evidence",
-  "task-cancel-assurance",
-  "agent-approval-relay",
-  "capability-negotiation-preflight",
-  "mcp-catalog-cache-guard",
-  "oauth-issuer-binding-evidence",
-  "mcp-a2a-task-bridge",
-  "quote-freshness-guard",
-  "delegated-credential-guard",
-  "agent-session-continuity",
-  "task-lease-guard",
-  "tool-result-schema-validator",
-  "agent-memory-provenance",
-  "payment-delivery-atomicity",
-  "service-failover-selector",
-  "agent-rate-limit-negotiator",
-  "execution-cost-estimator",
-  "cross-agent-receipt-bundle",
-  "capability-verification",
-  "capability-benchmark",
-  "sybil-reputation-guard",
-  "agent-behavior-fingerprint",
-  "trust-anomaly-detector",
-  "economic-loop-detector",
-  "provider-quality-predictor",
-  "transaction-risk-score",
-  "payment-optimizer",
-  "x402-v2-router",
-  "erc8004-identity-evidence",
-  "erc8004-reputation-intelligence",
-  "delegated-spend-policy",
-  "ap2-mandate-bridge",
-  "a2a-transaction-bridge",
-  "mcp-transaction-gateway",
-  "proof-of-service",
-  "automated-dispute-bundle",
-  "transaction-recovery-v2",
-  "reputation-update-receipt",
-  "agent-economic-graph",
-  "market-demand-predictor",
-  "service-gap-detector",
-  "price-discovery-engine",
-  "sla-risk-predictor",
-  "dynamic-service-pricing",
-  "autonomous-procurement",
-  "multi-agent-escrow",
-  "cross-protocol-receipt"
-]New value: +[
+  "attest",
+  "payment-firewall",
+  "web-evidence",
+  "mandate-reserve",
+  "agent-inspection",
+  "commerce-journey",
+  "transaction-assurance",
+  "transaction-recovery",
+  "rwa-asset-due-diligence",
+  "rwa-compliance",
+  "rwa-nav-reserve",
+  "rwa-transaction-assurance",
+  "rwa-corporate-actions",
+  "schema-normalize",
+  "sanctions-screening-evidence",
+  "agent-reputation-evidence",
+  "counterparty-risk-preflight",
+  "tool-output-firewall",
+  "delegation-scope-guard",
+  "memory-write-guard",
+  "mcp-manifest-firewall",
+  "tool-call-policy-guard",
+  "data-egress-preflight",
+  "agent-budget-guard",
+  "idempotency-replay-guard",
+  "human-approval-policy",
+  "secret-redaction-preflight",
+  "oauth-token-audience-guard",
+  "redirect-callback-validator",
+  "tool-capability-drift-monitor",
+  "mcp-server-identity-evidence",
+  "agent-task-handoff-receipt",
+  "context-provenance-labeler",
+  "signed-result-comparator",
+  "service-sla-attestation",
+  "payment-route-selector",
+  "x402-quote-comparator",
+  "payment-receipt-reconciler",
+  "duplicate-charge-detector",
+  "subscription-spend-guard",
+  "webhook-verifier",
+  "delivery-evidence",
+  "inter-agent-policy-evaluator",
+  "concurrency-guard",
+  "resource-cycle-guard",
+  "abandoned-tool-detector",
+  "manifest-version-diff",
+  "dependency-provenance-assessment",
+  "conflict-resolution",
+  "data-freshness-certificate",
+  "domain-ownership-evidence",
+  "purpose-bound-consent",
+  "retention-deletion-receipt",
+  "interrupted-task-recovery",
+  "portable-observability-audit",
+  "index-feed",
+  "verified-web-extract",
+  "entity-enrichment-evidence",
+  "social-source-evidence",
+  "market-data-snapshot",
+  "onchain-evidence",
+  "verified-news-monitor",
+  "multi-source-fact-bundle",
+  "document-to-verified-json",
+  "source-backed-search",
+  "live-data-freshness",
+  "person-enrichment-evidence",
+  "company-enrichment-evidence",
+  "contact-enrichment-evidence",
+  "mcp-2026-compatibility-gateway",
+  "durable-agent-task",
+  "task-checkpoint-evidence",
+  "task-cancel-assurance",
+  "agent-approval-relay",
+  "capability-negotiation-preflight",
+  "mcp-catalog-cache-guard",
+  "oauth-issuer-binding-evidence",
+  "mcp-a2a-task-bridge",
+  "quote-freshness-guard",
+  "delegated-credential-guard",
+  "agent-session-continuity",
+  "task-lease-guard",
+  "tool-result-schema-validator",
+  "agent-memory-provenance",
+  "payment-delivery-atomicity",
+  "service-failover-selector",
+  "agent-rate-limit-negotiator",
+  "execution-cost-estimator",
+  "cross-agent-receipt-bundle",
+  "capability-verification",
+  "capability-benchmark",
+  "sybil-reputation-guard",
+  "agent-behavior-fingerprint",
+  "trust-anomaly-detector",
+  "economic-loop-detector",
+  "provider-quality-predictor",
+  "transaction-risk-score",
+  "payment-optimizer",
+  "x402-v2-router",
+  "erc8004-identity-evidence",
+  "erc8004-reputation-intelligence",
+  "delegated-spend-policy",
+  "ap2-mandate-bridge",
+  "a2a-transaction-bridge",
+  "mcp-transaction-gateway",
+  "proof-of-service",
+  "automated-dispute-bundle",
+  "transaction-recovery-v2",
+  "reputation-update-receipt",
+  "agent-economic-graph",
+  "market-demand-predictor",
+  "service-gap-detector",
+  "price-discovery-engine",
+  "sla-risk-predictor",
+  "dynamic-service-pricing",
+  "autonomous-procurement",
+  "multi-agent-escrow",
+  "cross-protocol-receipt",
+  "phion-inference",
+  "phion-search",
+  "phion-enrich",
+  "phion-intelligence"
+]
  3. First observed

TDQS

B3.4/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full behavioral burden and does disclose two important traits: cost is zero ('Free') and no wallet/auth is needed. It stops short of other operational facts an agent needs — whether the preview is truncated/representative-only, rate limits, and whether calling it commits to anything.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

One dense sentence that front-loads the key benefit ('Free representative preview') before the outputs and the 'no wallet required' constraint. Nothing is wasted, though the clause stacking makes it slightly harder to parse at a glance.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with a 120+ value enum, no output schema, and no annotations, the description is adequate on the basics (free, no wallet, returns price and upgrade path) but does not explain what the 'representative preview' actually contains or how it relates to the real paid response, which matters given the huge service surface.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. 'For any PHION paid service' does convey that the single parameter selects a service, which is useful, but it adds no format, naming, or constraint detail beyond the 120+ value enum, and gives no hint about the enum itself.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific action ('free representative preview') plus a concrete scope ('any PHION paid service') and the extra outputs (exact price, upgrade instructions). It is clearly distinguishable from a generic execute tool, but it never names or contrasts any of the many related siblings such as phion_get_service, phion_preflight, or phion_discover.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

'No wallet required' implies the usage context (pre-payment evaluation, cold-start without credentials), so the when-to-use is inferable. However, it never states when NOT to use it (e.g. when a paid call is actually intended) nor points at the alternative tool to use in that case.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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