Production MCP server giving AI agents metered access to live Hedera blockchain data. Query token prices, screen identities, monitor governance, write tamper-evident HCS compliance records, and analyze smart contracts — all paid in HBAR micropayments per call.
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Scored across 25 tools
Several HCS tools (hcs_monitor, hcs_query, hcs_understand, hcs_audit_trail) and contract_read vs contract_analyze overlap in returning state/activity information. fixatum_status and fixatum_score also both return trust-score data. Descriptions help, but an agent can still misselect among similar analytical depth tools.
Tool names consistently use snake_case and mostly follow a domain_action pattern (hcs_query, token_analyze, identity_resolve). A few names like confirm_terms, get_terms, and account_info deviate from strict domain-prefixing but remain readable and consistent overall.
25 tools is heavy for a single MCP server and spans many subdomains: contracts, HCS, identity, governance, tokens, Fixatum agent layer, and payments. The breadth may justify the count, but the surface is at the upper end of what an agent can manage without confusion.
The set covers substantial read/analysis plus HCS write/verify lifecycle and agent registration and KYC/sanctions. However, major Hedera operations like contract write/deploy, token creation/transfer, account creation, and governance voting are absent, leaving notable gaps for a general Hedera toolbox.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
fixatum_fleet_inbox3 fields changedInput schema / properties / api_key / descriptionPrevious value: -"Your HederaToolbox API key. Must be Midas account (0.0.10435510)."New value: +"Operator API key."Input schema / properties / api_secretAdded value: +{
+ "description": "Operator API secret.",
+ "type": "string"
+}Input schema / requiredPrevious value: -[
- "api_key"
-]New value: +[
+ "api_key",
+ "api_secret"
+]fixatum_fleet_status3 fields changedInput schema / properties / api_key / descriptionPrevious value: -"Your HederaToolbox API key. Must be Midas account (0.0.10435510)."New value: +"Operator API key."Input schema / properties / api_secretAdded value: +{
+ "description": "Operator API secret.",
+ "type": "string"
+}Input schema / requiredPrevious value: -[
- "api_key"
-]New value: +[
+ "api_key",
+ "api_secret"
+]hcs_write_record2 fields changedInput schema / properties / agent_didAdded value: +{
+ "description": "Optional. Your Fixatum DID (did:hedera:mainnet:z{BASE58_PUBKEY}_{ACCOUNT_ID}). Must be passed together with agent_signature.",
+ "type": "string"
+}Input schema / properties / agent_signatureAdded value: +{
+ "description": "Optional. Base64 Ed25519 signature over the canonical JSON of {topic_id, record_type, entity_id, data} with object keys sorted at every depth. Must be passed together with agent_did. A signature that does not match is rejected and the call is not charged.",
+ "type": "string"
+}fixatum_fleet_inboxfixatum_fleet_statushcs_write_record2 fields changedInput schema / properties / topic_id / descriptionPrevious value: -"HCS topic ID to write the record to. Defaults to the HederaIntel platform topic."New value: +"HCS topic ID to write the record to. Must be an open topic you own or have access to."Input schema / requiredPrevious value: -[
- "record_type",
- "entity_id",
- "data",
- "api_key"
-]New value: +[
+ "topic_id",
+ "record_type",
+ "entity_id",
+ "data",
+ "api_key"
+]fixatum_registerfixatum_scorefixatum_statushcs_create_topichcs_create_topicaccount_infoconfirm_termscontract_analyzecontract_callcontract_readget_termsgovernance_analyzegovernance_monitorhcs_audit_trailhcs_monitorhcs_queryhcs_understandhcs_verify_recordhcs_write_recordidentity_check_sanctionsidentity_resolveidentity_verify_kyctoken_analyzetoken_monitortoken_price
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