PHION Agent Trust Infrastructure
REMOTE · PHION.SYSTEMS · SCANNED SEP 25
118 agent services with free discovery, intent, x402 terms and signed verification.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 52 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability58
- AI-judged instruction clarity (fair).Partial
- Tool/resource definitions use about 5964 tokens (~48/item across 124 items; 124 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management47
- Stability observed for 14 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage72
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 2% of tool parameters carry a description.Partial
- Structured output schemas are declared (58% of tools); any adoption earns full credit.Pass
Tool Safety88
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 1 of 2 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "duplicate_charge_detector" implies "charge" and declares readOnlyHint instead, contradicting what its own name says it does. See how to fix → Partial
- An AI judge read all 124 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
How do I install the PHION Agent Trust Infrastructure MCP server?
PHION Agent Trust Infrastructure is a hosted endpoint at https://phion.systems/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · phion.systems
claude mcp add --transport http systems-phion-evidence-engine 'https://phion.systems/mcp'
{
"mcpServers": {
"systems-phion-evidence-engine": {
"url": "https://phion.systems/mcp"
}
}
} {
"servers": {
"systems-phion-evidence-engine": {
"type": "http",
"url": "https://phion.systems/mcp"
}
}
} [mcp_servers.systems-phion-evidence-engine] url = "https://phion.systems/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"systems-phion-evidence-engine": {
"type": "remote",
"url": "https://phion.systems/mcp",
"enabled": true
}
}
} openclaw mcp add systems-phion-evidence-engine --url 'https://phion.systems/mcp' --transport streamable-http
mcp_servers:
systems-phion-evidence-engine:
url: "https://phion.systems/mcp" {
"McpServers": {
"systems-phion-evidence-engine": {
"Transport": "http",
"Url": "https://phion.systems/mcp"
}
}
} assistant mcp add systems-phion-evidence-engine -t streamable-http -u 'https://phion.systems/mcp'
{
"mcpServers": {
"systems-phion-evidence-engine": {
"type": "http",
"url": "https://phion.systems/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Sept 26 −1
- MCP protocol: pass → fail ▼ functional
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- Server version: 1.49.4 → 1.49.6 functional
- Server version: 1.49.3 → 1.49.4 functional
- Server version: 1.49.0 → 1.49.3 functional
- 24 Sept 26 +1
- Server version: 1.46.2 → 1.46.4 functional
- 23 Sept 26 0
- Server version: 1.46.1 → 1.46.2 functional
- Server version: 1.46.0 → 1.46.1 functional
- Server version: 1.45.0 → 1.46.0 functional
- 22 Sept 26 +1
- Schema quality: 4804 → 5964 ▼ functional
- Tool coverage: 45% → 58% ▲ functional
- Tool coverage: 45% → 50% ▲ functional
- Server version: 1.44.0 → 1.45.0 functional
- Server version: 1.39.0 → 1.44.0 functional
- Server version: 1.37.0 → 1.39.0 functional
- New tool “a2a_transaction_bridge” functional
- New tool “agent_economic_graph” functional
- New tool “ap2_mandate_bridge” functional
- New tool “automated_dispute_bundle” functional
- New tool “autonomous_procurement” functional
- New tool “cross_protocol_receipt” functional
- New tool “delegated_spend_policy” functional
- New tool “dynamic_service_pricing” functional
- New tool “erc8004_identity_evidence” functional
- New tool “erc8004_reputation_intelligence” functional
- New tool “market_demand_predictor” functional
- New tool “mcp_transaction_gateway” functional
- New tool “multi_agent_escrow” functional
- New tool “price_discovery_engine” functional
- New tool “proof_of_service” functional
- New tool “reputation_update_receipt” functional
- New tool “service_gap_detector” functional
- New tool “sla_risk_predictor” functional
- New tool “transaction_recovery_v2” functional
- New tool “agent_behavior_fingerprint” functional
- New tool “capability_benchmark” functional
- New tool “capability_verification” functional
- New tool “economic_loop_detector” functional
- New tool “payment_optimizer” functional
- New tool “provider_quality_predictor” functional
- New tool “sybil_reputation_guard” functional
- New tool “transaction_risk_score” functional
- New tool “trust_anomaly_detector” functional
- New tool “x402_v2_router” functional
- 21 Sept 26 +2
- Schema quality: 57 → 50 ▲ functional
- Tool coverage: 31% → 45% ▲ functional
- Tool coverage: 31% → 39% ▲ functional
- MCP protocol: fail → pass ▲ functional
- MCP protocol version: 2025-06-18 → 2026-07-28 functional
- Server version: 1.35.0 → 1.37.0 functional
- Server version: 1.33.0 → 1.35.0 functional
- Server version: 1.32.2 → 1.33.0 functional
- Server version: 1.32.3 → 1.32.2 functional
- New tool “tool_result_schema_validator” functional
- New tool “agent_memory_provenance” functional
- New tool “agent_rate_limit_negotiator” functional
- New tool “agent_session_continuity” functional
- New tool “cross_agent_receipt_bundle” functional
- New tool “delegated_credential_guard” functional
- New tool “execution_cost_estimator” functional
- New tool “payment_delivery_atomicity” functional
- New tool “service_failover_selector” functional
- New tool “task_lease_guard” functional
- New tool “agent_approval_relay” functional
- New tool “capability_negotiation_preflight” functional
- New tool “durable_agent_task” functional
- New tool “mcp_2026_compatibility_gateway” functional
- New tool “mcp_a2a_task_bridge” functional
- New tool “mcp_catalog_cache_guard” functional
- New tool “oauth_issuer_binding_evidence” functional
- New tool “quote_freshness_guard” functional
- New tool “task_cancel_assurance” functional
- New tool “task_checkpoint_evidence” functional
- 20 Sept 26 0
- Server version: 1.32.0 → 1.32.3 functional
- 19 Sept 26 +1
- Tool “company_enrichment_evidence” rewrote its description, which is the text the model reads security
- Tool “contact_enrichment_evidence” rewrote its description, which is the text the model reads security
- Tool “person_enrichment_evidence” rewrote its description, which is the text the model reads security
- Schema quality: 50 → 57 ▼ functional
- Server version: 1.31.1 → 1.32.0 functional
- “company_enrichment_evidence” added an optional parameter “birth_date” cosmetic
- “company_enrichment_evidence” added an optional parameter “contact” cosmetic
- “company_enrichment_evidence” added an optional parameter “country” cosmetic
- “company_enrichment_evidence” added an optional parameter “email” cosmetic
- “company_enrichment_evidence” added an optional parameter “email_hash” cosmetic
- “company_enrichment_evidence” added an optional parameter “entity” cosmetic
- “company_enrichment_evidence” added an optional parameter “first_name” cosmetic
- “company_enrichment_evidence” added an optional parameter “identifier” cosmetic
- “company_enrichment_evidence” added an optional parameter “input” cosmetic
- “company_enrichment_evidence” added an optional parameter “last_name” cosmetic
- “company_enrichment_evidence” added an optional parameter “lid” cosmetic
- “company_enrichment_evidence” added an optional parameter “locality” cosmetic
- “company_enrichment_evidence” added an optional parameter “minimum_likelihood” cosmetic
- “company_enrichment_evidence” added an optional parameter “pdl_id” cosmetic
- “company_enrichment_evidence” added an optional parameter “person” cosmetic
- “company_enrichment_evidence” added an optional parameter “phone” cosmetic
- “company_enrichment_evidence” added an optional parameter “postal_code” cosmetic
- “company_enrichment_evidence” added an optional parameter “query” cosmetic
- “company_enrichment_evidence” added an optional parameter “region” cosmetic
- “company_enrichment_evidence” added an optional parameter “school” cosmetic
- “company_enrichment_evidence” added an optional parameter “street_address” cosmetic
- “company_enrichment_evidence” added an optional parameter “subject” cosmetic
- “contact_enrichment_evidence” added an optional parameter “birth_date” cosmetic
- “contact_enrichment_evidence” added an optional parameter “contact” cosmetic
- “contact_enrichment_evidence” added an optional parameter “country” cosmetic
- “contact_enrichment_evidence” added an optional parameter “email_hash” cosmetic
- “contact_enrichment_evidence” added an optional parameter “entity” cosmetic
- “contact_enrichment_evidence” added an optional parameter “first_name” cosmetic
- “contact_enrichment_evidence” added an optional parameter “identifier” cosmetic
- “contact_enrichment_evidence” added an optional parameter “input” cosmetic
- “contact_enrichment_evidence” added an optional parameter “last_name” cosmetic
- “contact_enrichment_evidence” added an optional parameter “lid” cosmetic
- “contact_enrichment_evidence” added an optional parameter “locality” cosmetic
- “contact_enrichment_evidence” added an optional parameter “pdl_id” cosmetic
- “contact_enrichment_evidence” added an optional parameter “person” cosmetic
- “contact_enrichment_evidence” added an optional parameter “phone” cosmetic
- “contact_enrichment_evidence” added an optional parameter “postal_code” cosmetic
- “contact_enrichment_evidence” added an optional parameter “query” cosmetic
- “contact_enrichment_evidence” added an optional parameter “region” cosmetic
- “contact_enrichment_evidence” added an optional parameter “school” cosmetic
- “contact_enrichment_evidence” added an optional parameter “street_address” cosmetic
- “contact_enrichment_evidence” added an optional parameter “subject” cosmetic
- “contact_enrichment_evidence” added an optional parameter “ticker” cosmetic
- “contact_enrichment_evidence” added an optional parameter “website” cosmetic
- “person_enrichment_evidence” added an optional parameter “birth_date” cosmetic
- “person_enrichment_evidence” added an optional parameter “contact” cosmetic
- “person_enrichment_evidence” added an optional parameter “country” cosmetic
- “person_enrichment_evidence” added an optional parameter “email_hash” cosmetic
- “person_enrichment_evidence” added an optional parameter “entity” cosmetic
- “person_enrichment_evidence” added an optional parameter “first_name” cosmetic
- “person_enrichment_evidence” added an optional parameter “identifier” cosmetic
- “person_enrichment_evidence” added an optional parameter “input” cosmetic
- “person_enrichment_evidence” added an optional parameter “last_name” cosmetic
- “person_enrichment_evidence” added an optional parameter “lid” cosmetic
- “person_enrichment_evidence” added an optional parameter “locality” cosmetic
- “person_enrichment_evidence” added an optional parameter “pdl_id” cosmetic
- “person_enrichment_evidence” added an optional parameter “person” cosmetic
- “person_enrichment_evidence” added an optional parameter “phone” cosmetic
- “person_enrichment_evidence” added an optional parameter “postal_code” cosmetic
- “person_enrichment_evidence” added an optional parameter “query” cosmetic
- “person_enrichment_evidence” added an optional parameter “region” cosmetic
- “person_enrichment_evidence” added an optional parameter “school” cosmetic
- “person_enrichment_evidence” added an optional parameter “street_address” cosmetic
- “person_enrichment_evidence” added an optional parameter “subject” cosmetic
- “person_enrichment_evidence” added an optional parameter “ticker” cosmetic
- “person_enrichment_evidence” added an optional parameter “website” cosmetic
- “company_enrichment_evidence” reworded the description of “company” cosmetic
- “contact_enrichment_evidence” reworded the description of “company” cosmetic
- “person_enrichment_evidence” reworded the description of “company” cosmetic
- 17 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 25 Sept 2026 · Probed https://phion.systems/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=phion.systems | CN=YE2,O=Let's Encrypt,C=US | 30 Jul 2026 | 28 Oct 2026 | ECDSA 256 | ECDSA-SHA384 | 64d09cefb1b3a722bb9f05fcaf93ae899ed |
| SANs: phion.systems, www.phion.systems | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of phion.systems. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| systems. | present | 9634 | 8 | Verified |
| phion.systems. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains; preload |
| content-security-policy | default-src 'self' https://*.cloudflare.com https://gstatic.com; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://*.jsdelivr.net https://*.cloudflare.com https://*.unpkg.com; style-src 'self' 'unsafe-inline' https://googleapis.com; connect-src 'self' https://*.walletconnect.com https://*.cloudflare-eth.com; img-src 'self' data: https://*.phion.systems https://*.reown.com; font-src 'self' https://gstatic.com; |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://phion.systems/mcp | Verified | 200 | |
| http (plaintext) | http://phion.systems/mcp | HTTPS enforced | 301 | https://phion.systems/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
a2a_transaction_bridge A2A Transaction Bridge ~42
Bind an A2A task to a transaction without silently transferring authority.; 0.004 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
abandoned_tool_detector Abandoned Tool Detector ~44
Require stale success plus multiple independent failed probes before classifying likely abandonment; 0.003 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| policy | object | yes | – |
| tool | object | yes | – |
No output schema declared.
No examples provided.
agent_approval_relay Agent Approval Relay ~22
Agent Approval Relay; deterministic signed assessment over supplied input.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
agent_behavior_fingerprint Agent Behavior Fingerprint ~42
Create a privacy-minimized behavioral commitment without retaining payloads or raw identifiers.; 0.003 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
agent_budget_guard ~28
Enforce per-call, task, session and period budgets; 0.002 USDC.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
agent_economic_graph Agent Economic Graph ~40
Build privacy-bounded economic relationships only from supplied nodes and edges.; 0.005 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
agent_memory_provenance Agent Memory Provenance ~23
Agent Memory Provenance; deterministic signed assessment over supplied input.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
agent_rate_limit_negotiator Agent Rate Limit Negotiator ~25
Agent Rate Limit Negotiator; deterministic signed assessment over supplied input.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
agent_reputation_evidence ~57
Evidence-bounded agent reputation assessment with confidence, coverage, provenance limitations and a signed receipt; 0.005 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| evidence | array | – | – |
| signals | object | – | – |
| subject | object | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
agent_session_continuity Agent Session Continuity ~23
Agent Session Continuity; deterministic signed assessment over supplied input.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
agent_task_handoff_receipt ~27
Sign a bounded agent-task handoff; 0.003 USDC.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
ap2_mandate_bridge AP2 Mandate Bridge ~42
Map mandate fields for review without advertising unsupported AP2 production authorization.; 0.004 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
attest ~44
x402 paid signed JSON attestation; 0.001 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| content | – | yes | – |
| sources | array | – | – |
| ttl_seconds | integer | – | – |
No output schema declared.
No examples provided.
automated_dispute_bundle Automated Dispute Bundle ~37
Assemble failure evidence and recommend resolution without executing refunds.; 0.005 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
autonomous_procurement Autonomous Procurement ~37
Recommend a verified eligible provider under a mandate without purchasing.; 0.005 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
capability_benchmark Capability Benchmark ~42
Measure reproducible success, latency and cost from versioned evidence-bound benchmark cases.; 0.004 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
capability_negotiation_preflight Capability Negotiation Preflight ~25
Capability Negotiation Preflight; deterministic signed assessment over supplied input.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
capability_verification Capability Verification ~35
Separate claimed capabilities from independently evidenced successful demonstrations.; 0.003 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
company_enrichment_evidence ~259
Company enrichment with free input preflight, provider attribution and signed evidence; 0.005 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| birth_date | string | – | – |
| company | – | – | Company name or nested input object |
| contact | object | – | – |
| country | string | – | – |
| string | – | – | |
| email_hash | string | – | – |
| entity | object | – | – |
| first_name | string | – | – |
| identifier | string | – | Email, profile URL, phone, company domain, ticker or name; interpreted by service |
| input | object | – | – |
| last_name | string | – | – |
| lid | string | – | – |
| locality | string | – | – |
| location | string | – | – |
| minimum_likelihood | integer | – | – |
| name | string | – | – |
| pdl_id | string | – | – |
| person | object | – | – |
| phone | string | – | – |
| postal_code | string | – | – |
| profile | string | – | – |
| query | object | – | – |
| region | string | – | – |
| school | string | – | – |
| street_address | string | – | – |
| subject | object | – | – |
| ticker | string | – | – |
| website | string | – | – |
No output schema declared.
No examples provided.
concurrency_guard Concurrency Guard ~94
Fail closed unless capacity counter is fresh and the request carries a lease plus idempotency binding; 0.002 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| active_slots | integer | yes | – |
| counter_observed_at | integer | yes | – |
| idempotency_key | string | yes | – |
| lease_id | string | yes | – |
| lease_valid_until | integer | yes | – |
| policy | object | yes | – |
| requested_slots | integer | yes | – |
No output schema declared.
No examples provided.
conflict_resolution ~49
Resolve or abstain; every candidate must bind source, value hash, observation time and bounded confidence; 0.003 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| candidates | array | yes | – |
| policy | object | yes | – |
No output schema declared.
No examples provided.
contact_enrichment_evidence ~260
Business-contact enrichment with free input preflight, identity limitations and signed receipt; 0.007 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| birth_date | string | – | – |
| company | – | – | Company name or nested input object |
| contact | object | – | – |
| country | string | – | – |
| string | – | – | |
| email_hash | string | – | – |
| entity | object | – | – |
| first_name | string | – | – |
| identifier | string | – | Email, profile URL, phone, company domain, ticker or name; interpreted by service |
| input | object | – | – |
| last_name | string | – | – |
| lid | string | – | – |
| locality | string | – | – |
| location | string | – | – |
| minimum_likelihood | integer | – | – |
| name | string | – | – |
| pdl_id | string | – | – |
| person | object | – | – |
| phone | string | – | – |
| postal_code | string | – | – |
| profile | string | – | – |
| query | object | – | – |
| region | string | – | – |
| school | string | – | – |
| street_address | string | – | – |
| subject | object | – | – |
| ticker | string | – | – |
| website | string | – | – |
No output schema declared.
No examples provided.
context_provenance_labeler ~29
Hash and label context integrity, confidentiality and source; 0.002 USDC.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
counterparty_risk_preflight ~63
Deterministic counterparty policy preflight using supplied reputation evidence and transaction limits; 0.003 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| policy | object | – | – |
| reputation | object | – | – |
| subject | object | yes | – |
| transaction | object | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
cross_agent_receipt_bundle Cross-Agent Receipt Bundle ~23
Cross-Agent Receipt Bundle; deterministic signed assessment over supplied input.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
cross_protocol_receipt Cross-Protocol Receipt ~35
Bundle consistent transaction commitments across multiple protocols.; 0.004 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
data_egress_preflight ~47
Inspect outbound agent data and destination before transmission; 0.002 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| destination | object | yes | – |
| payload | – | yes | – |
| policy | object | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
data_freshness_certificate ~52
Certify freshness only when timestamp is bound to source URI and a 64-hex content hash; 0.002 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| policy | object | yes | – |
No output schema declared.
No examples provided.
delegated_credential_guard Delegated Credential Guard ~22
Delegated Credential Guard; deterministic signed assessment over supplied input.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
delegated_spend_policy Delegated Spend Policy ~42
Fail closed when delegated authority, per-call limit or remaining budget is insufficient.; 0.003 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
delegation_scope_guard ~48
Least-privilege guard for agent-to-agent delegation scope, destinations, budget and expiry; 0.003 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| delegation | object | yes | – |
| policy | object | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
delivery_evidence Delivery Evidence ~47
Bind successful delivery to transaction, request and matching 64-hex expected/observed content hashes without echoing content; 0.003 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| delivery | object | yes | – |
No output schema declared.
No examples provided.
dependency_provenance_assessment ~51
Fail closed on empty dependency sets or absent registry policy; distinguish digest declarations from verified provenance; 0.003 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| dependencies | array | yes | – |
| policy | object | yes | – |
No output schema declared.
No examples provided.
document_to_verified_json ~50
Public text, HTML, JSON or XML normalized to source-backed JSON; no OCR; 0.010 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| expected_fields | array | – | – |
| source_urls | array | yes | – |
No output schema declared.
No examples provided.
domain_ownership_evidence ~52
Require a fresh domain-bound DNS-01/HTTP-01 challenge and separate control from legal ownership; 0.003 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | – |
| evidence | object | yes | – |
No output schema declared.
No examples provided.
duplicate_charge_detector Duplicate Charge Detector ~36
Detect repeated transaction hashes, payment identifiers and idempotent intents; 0.003 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| charges | array | yes | – |
No output schema declared.
No examples provided.
durable_agent_task Durable Agent Task ~20
Durable Agent Task; deterministic signed assessment over supplied input.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
dynamic_service_pricing Dynamic Service Pricing ~39
Propose a capped shadow price without changing the live catalog.; 0.004 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
economic_loop_detector Economic Loop Detector ~39
Detect self-transfer and reciprocal economic patterns without presenting correlation as fraud.; 0.004 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
entity_enrichment_evidence ~52
Source-bounded entity field coverage with explicit missing facts; 0.008 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| expected_fields | array | – | – |
| source_urls | array | yes | – |
| subject | object | – | – |
No output schema declared.
No examples provided.
erc8004_identity_evidence ERC-8004 Identity Evidence ~46
Bind an ERC-8004 registry identity to evidence while separating registration from ownership.; 0.004 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
erc8004_reputation_intelligence ERC-8004 Reputation Intelligence ~43
Aggregate diverse verified reputation observations with low-sample abstention.; 0.004 USDC. Deterministic, evidence-bounded and signed.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
execution_cost_estimator Execution Cost Estimator ~22
Execution Cost Estimator; deterministic signed assessment over supplied input.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
fetch_evidence ~45
Independently fetch bounded public evidence with redirect/DNS/connected-address SSRF checks, hashes and injection screening; 0.004 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | – |
No output schema declared.
No examples provided.
human_approval_policy ~29
Classify an action as automatic, approval-required or denied; 0.002 USDC.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
idempotency_replay_guard ~31
Detect safe replays and conflicting idempotency-key reuse; 0.002 USDC.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
index_feed PHION Index Feed ~53
Canonical catalog snapshot or digest-based delta with exact HTTP/MCP records, PHION Execute templates and signed evidence; 0.005 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| mode | – | yes | – |
| since_snapshot_sha256 | string | – | – |
No output schema declared.
No examples provided.
inspect_agent ~50
Pre-payment agent inspection across x402, A2A, ERC-8004, OpenAPI and MCP; failed inspections are not charged; 0.009 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | – |
No output schema declared.
No examples provided.
inter_agent_policy_evaluator Inter-Agent Policy Evaluator ~46
Require policy identity, subject, action, lifetime and valid decisions; compute the restrictive cap and shared actions; 0.003 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| policies | array | yes | – |
No output schema declared.
No examples provided.
interrupted_task_recovery ~62
Resume only when task/checkpoint identity, sequence, deadline, attempt budget, idempotency and side effects are explicit; 0.003 USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| checkpoint | object | yes | – |
| policy | object | yes | – |
| task | object | yes | – |
No output schema declared.
No examples provided.
What is the PHION Agent Trust Infrastructure MCP server?
PHION Agent Trust Infrastructure is an MCP server listed in the public MCP registry as systems.phion/evidence-engine. 118 agent services with free discovery, intent, x402 terms and signed verification. This page covers its hosted endpoint (https://phion.systems/mcp).
Is the PHION Agent Trust Infrastructure MCP server safe to use?
PHION Agent Trust Infrastructure scores 66 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the PHION Agent Trust Infrastructure MCP server expose?
PHION Agent Trust Infrastructure exposes 124 tools: phion_execute, index_feed, preflight, try_service, schema_normalize_free, and 119 more. Their descriptions and schemas cost roughly 5,964 tokens of context every time the server is loaded.
Does the PHION Agent Trust Infrastructure MCP server require authentication?
No. We connected to PHION Agent Trust Infrastructure without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the PHION Agent Trust Infrastructure MCP server still maintained?
PHION Agent Trust Infrastructure is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.