SPR (Sealed Payment Record)
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Alternatives to SPR (Sealed Payment Record)
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- AlicenseNot gradedqualityCmaintenanceEnables AI agents to propose structured payment intents, apply deterministic policy, require human approval, and record tamper-evident audit trails without connecting to live payment rails.MIT
- AlicenseNot gradedqualityAmaintenanceTamper-evident audit trail for AI agent tool calls. Cryptographically signed, hash-chained records that prove what your agents did.318 npmMIT
- FlicenseNot gradedqualityCmaintenanceEnables AI agents to propose wallet payments while a local, human-authored policy decides whether each transaction is approved, requires human confirmation, or is refused, and records every decision in a signed, append-only ledger.-

evermint-mcpofficial
AlicenseNot gradedqualityDmaintenanceTamper-evident receipts for AI agent actions. The notary layer for agent-to-agent transactions.31 npm1MIT- AlicenseNot gradedqualityAmaintenanceEnables autonomous agents to calculate deterministic profit and loss, attribute revenue and costs, and generate signed operational reports using x402 micropayments.MIT
- AlicenseAqualityCmaintenancePayment firewall for AI agents: a signed, independently verifiable verdict on every money-moving action. Blocks wrong/lookalike payee, over-cap, and duplicate-invoice (BEC) fraud before money moves — anyone can verify a verdict against the public JWKS. Free, local-first, non-custodial.121Apache 2.0
TDQS
Scored across 10 tools
Most tools occupy clearly distinct steps of the payment lifecycle (declare intent, check, record settlement, verify, cancel), and the three export tools explicitly cross-reference each other ("use export_xbrl_csv instead", "use export_package instead") so their boundaries are spelled out. The only residual overlap is among the three export_* tools, which a careless agent could still misselect, but the descriptions mitigate it well.
Every name is a snake_case verb_noun phrase (record_intent, cancel_intent, get_intent, check_payment, record_settlement, list_records, verify_record, export_package, export_xbrl_csv, export_dispute_pack). The verb prefixes are used meaningfully and consistently, and multi-word objects like export_xbrl_csv still follow the same predictable pattern.
Ten tools is a well-scoped set that maps cleanly onto the domain's stages: intent management (3), settlement (3), and exports (3) plus the pre-payment check. No tool looks redundant or bolted on, and nothing obviously needed is missing from the count.
The surface covers the full lifecycle: declare/get/cancel intents, check before paying, record settlement, list and verify records, and export for auditors, accounting, or disputes. Minor gaps remain: there is no way to enumerate intents (get_intent needs an ID, and no list_intents exists), and no single-record fetch since list_records returns the entire unpaged book, but agents can work around both via record listings.