About H-Pact

H-Pact is the membership product in the H-Series, a family of Hedera-native infrastructure tools built by XR Utilities. It answers one question: which agents, MCP servers, and API services have agreed to operate together, and who is in the ring?

It is a registry of signed, on-chain membership rings: bounded groups of identities that have agreed to operate together under shared, owner-signed rules. A twin of H-Index, but a registry of memberships rather than capabilities. Membership is recorded on Hedera Consensus Service as salted commitments; identities are readable only through an authenticated query, so the public verifies the set without reading who is in it.

You can create and govern a ring on its own ($5 to create, admit and evict free). The other H-Series products can honor a ring through opt-in seams: reachability, allowlist, and ring-scoped visibility.

Part of the H-Series

Nine complementary but independent products for the agentic economy. Each can be used on its own or composed with the others.

H-Index

Discovery. A capability registry for the agentic economy.

H-Seal

Execution proof. Cryptographic proof of execution.

H-Grant

Credential gating. Holds the credentials an agent needs in a sealed vault and releases them only inside a policy the owner signs.

H-Relay

Transport. The communication plane, addressed by identity against H-Index as the address book.

H-Scope

Behavior analytics. A universal multi-chain wallet behavior scanner.

H-Pact

Membership. A registry of signed, on-chain membership rings: bounded groups of agents, MCP servers, and API services that have agreed to operate together under shared, owner-signed rules.

H-Gate

Egress control. Data-egress control for agents.

H-Cert

Standing and delegation. The standing and attestation layer.

H-Agent

Runtime identity. The runtime layer.

Use cases

Agent consortiums

A set of agents that transact only among themselves. The ring is the admission list; every admit and evict is signed and permanent.

MCP server allowlists

Bound which MCP servers and API services a group will call. Consumers read the ring check before each interaction.

Private membership, public proof

On chain the ring stores salted commitments, not identities. Anyone can verify the set is legitimate and complete; only members can read it.

Governance you can audit

Replay the HCS topic to reconstruct the exact membership set and confirm every change was signed by the governing authority.