Cycles Ap2 Python

Name: Cycles Ap2 Python
Author: runcycles

development MCP Server

Cycles runtime authority guard for Google AP2 (Agent Payments Protocol) — reserve, commit, release around AP2 payment mandates to prevent mandate reuse, double-spend, and concurrent checkout attempts.

byruncycles

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developmentdevelopment python gcp

5 views0 stars0 forksApache-2.0

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Why This Matters

Discovered via github-topic:mcp and last synced 3mo ago.

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Source: github-topic:mcp
Stars: 0
Last synced: 3mo ago
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Install

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Tools

Resources

Prompts

Standard I/O

Transport

Available Tools (10)

AP2GuardCommitUncertain

Commit outcome is unknown after the body ran. Covers terminal status codes (`RESERVATION_FINALIZED`, `RESERVATION_EXPIRED`, `IDEMPOTENCY_MISMATCH`), transport-level failures (`error_code="TRANSPORT_ERROR"`), 5xx server errors (`error_code="SERVER_ERROR"` or specific code), uncaught exceptions during commit (`error_code="COMMIT_RAISED"`, original chained via `__cause__`), and — **async only** — `asyncio.CancelledError` mid-flight (`error_code="COMMIT_CANCELLED"`, original chained via `__cause__`). **No auto-release** — the POST may have mutated Cycles before the failure. Reconcile with PSP

AP2DryRunResult

Raised from `__enter__` when `dry_run=True` — carries the decision payload; the `with` body never executes

AP2CurrencyError

Non-USD mandate in v0.1 (subclass of `ValueError`)

Exception

When

Package

Purpose

AP2GuardError

Base for all AP2-guard errors

AP2GuardCommitFailed

Commit was rejected with an unrecognized code after the body ran. Check `.released` (bool) and `.release_error` (string \

Scenario

Outcome

AP2MandateError

Adapter input is malformed — NaN, infinity, sub-micro precision, missing payee, etc. (subclass of `ValueError`)

AP2GuardDenied

Cycles returned `DENY` or the reserve POST failed

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