Tempo MPP Agent Mandate

Parse an MPP (Money Payment Protocol) session object, validate the spend cap and session terms, map the HTTP-402 flow to AP2 Intent→Cart→Payment, perform KYA agent identity check via did:key, model settlement cost, and emit a signed agent-payment mandate. The did:key identity of the agent signer is the marquee OCG v0.3 feature. Tempo: payments-first L1 incubated by Stripe + Paradigm, mainnet live March 2026. MPP spec: github.com/tempoxyz/mpp-specs. Client-side. Zero PII.

AP2 Export Chains: ART-01, ART-02, ART-04 did:key Identity MPP Session Tempo Stablecoin payment_mandate iso20022:pacs.008-subset

🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.

Agent identity

Agent DID (did:key format) Must be did:key method (z6Mk... prefix). Self-describing, registry-free agent identity. OCG v0.3 feature.

MPP session parameters

Merchant / API endpoint Merchant URL or metered API endpoint — CartMandate.merchant_id in AP2 mapping

Spend cap (USD) IntentMandate.ceiling_amount in AP2 mapping

Session duration

Payment rail

Stablecoin Applies when Tempo stablecoin rail is selected

Voucher cadence MPP off-chain signed voucher streaming frequency

Session summary

AP2 mandate mapping — MPP → AP2

KYA risk assessment

ISO 20022 pacs.008 settlement leg

Agent mandate

Next-chain links

→ ART-01 AP2 Mandate Validator → ART-02 Spend Policy Simulator → ART-04 KYA Identity Checker

Export the artifact then carry it into ART-01 to apply AP2 policy mandates, ART-02 for spend limit validation, or ART-04 for full KYA attestation.

Ask your agent

Copy this paragraph into Claude, OpenClaw, or any MCP-aware agent to run this exact tool, with this sample, and verify the artifact.

Run the AINumbers MCP tool `decode_mpp_session`. Task: Parse an MPP session object, validates spend cap and session terms, maps HTTP-402 flow to AP2 Intent→Cart→Payment, performs KYA agent identity check, models settlement cost, and emits a signed agent-payment mandate.
Call it with arguments: {"policy_parameters":{"agentDid":"did:key:z6MkhaXgBZDvotDkL5257faiztiGiC2QtKLGpbnnEGta2doK","merchant":"merchant-001","spendCap":25,"duration":"8h","rail":"tempo_stablecoin","stablecoin":"USDC","cadence":"per-request"}}
Verify before trusting: call `verify_execution_hash` on mcp.ainumbers.co (https://mcp.ainumbers.co/mcp) with the parameter `claimed_hash` set to the returned `execution_hash`, passing the full artifact the run returned (the object containing `policy_parameters` + `output_payload` + `execution_hash`; equivalently `policy_parameters` + `output_payload` with `claimed_hash`), not the bare hash string.
Return the ledger link https://ledger.ainumbers.co/ so a human can re-verify without contacting us.
PII rule: All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
Open the tool with the sample prefilled: https://ainumbers.co/chaingraph/art-36-tempo-mpp-agent-mandate.html#p=v1.H4sIAAAAAAAA_wHFADr_eyJhZ2VudERpZCI6ImRpZDprZXk6ejZNa2hhWGdCWkR2b3REa0w1MjU3ZmFpenRpR2lDMlF0S0xHcGJubkVHdGEyZG9LIiwibWVyY2hhbnQiOiJtZXJjaGFudC0wMDEiLCJzcGVuZENhcCI6MjUsImR1cmF0aW9uIjoiOGgiLCJyYWlsIjoidGVtcG9fc3RhYmxlY29pbiIsInN0YWJsZWNvaW4iOiJVU0RDIiwiY2FkZW5jZSI6InBlci1yZXF1ZXN0In10_2EIxQAAAA