Agent capital reference

Sources

Annotated bibliography for Agent Capital: primary sources on Agentic Wallet, AgentKit, x402, AP2, ACP, Stripe, Visa, Mastercard, OWASP, NIST, and FinCEN.

Updated

2026-07-06

Status

Source-backed. Educational. Not financial advice.

Key facts

What this page establishes

  • The bibliography prioritizes official docs, protocol repositories, and regulator/security risk materials.
  • Vendor claims are treated as vendor claims rather than independent market validation.
  • Short quotes and citation callouts are used sparingly; most source material is paraphrased.
  • Machine-readable llms files summarize page intent and editorial boundaries for answer engines.

This bibliography favors primary docs, official protocol repositories, and official product pages. Vendor claims are treated as vendor claims. Legal and regulatory sources are used to frame risk, not to give legal advice.

Source

Coinbase Developer Platform: Agentic Wallet overview

Defines Agentic Wallet as tools for agents to hold, spend, trade, and earn stablecoins with guardrails.

Source

Coinbase Developer Platform: Agentic Wallet CLI

Documents CLI and MCP wallet capabilities, x402 use cases, per-session caps, and per-transaction limits.

Source

Coinbase Developer Platform: AgentKit wallet management

Describes AgentKit wallet providers, default CDP non-custodial wallet support, and wallet operations.

Source

Coinbase Developer Platform: x402 wallet role

Explains wallets as payment mechanisms and identifiers in x402.

Source

x402 Docs: introduction

Explains x402 as an HTTP 402-based payment standard for APIs and content.

Source

x402 Foundation GitHub

States x402 principles and its network, token, and currency-agnostic direction.

Source

x402.org

Public project site with production-readiness claims and current adoption counters.

Source

Cloudflare: x402 Foundation launch

Summarizes the x402 client, server, facilitator, and settlement flow.

Source

Agent Payments Protocol documentation

Defines AP2, its authorization problem, verifiable intent, credentials, and audit trail goals.

Source

Agentic Commerce Protocol docs

Documents ACP as a programmatic exchange between buyers, agents, and sellers.

Source

Agentic Commerce Protocol GitHub

Open standard maintained by OpenAI and Stripe, with dated specification snapshots.

Source

OpenAI: Instant Checkout and Agentic Commerce Protocol

Announces ChatGPT Instant Checkout and describes ACP trust and merchant-control design.

Source

Stripe Docs: Issuing spending controls

Documents category, country, merchant, card-presence, authorization, and monthly spend controls.

Source

Stripe Issuing for agents

Describes single-use cards, spend limits, merchant-category controls, freezing cards, and real-time blocking.

Source

Visa Intelligent Commerce

Frames agentic commerce around spending limits, approvals, authentication, and trusted identity signals.

Source

Mastercard Agent Pay for Machines

Describes credentialing, permissioning, spending limits, cryptographic verification, and settlement.

Source

NIST AI Risk Management Framework

Risk-management framework for AI systems, including the generative AI profile.

Source

OWASP Top 10 for LLM Applications

Names risks including prompt injection, insecure output handling, excessive agency, and overreliance.

Source

FinCEN 2019 guidance on convertible virtual currency

Explains how value that substitutes for currency can fall within money-transmission analysis.

Machine-readable files

The T4 treatment includes llms.txt and llms-full.txt. The short file lists canonical pages and editorial boundaries. The full file summarizes the site context, page intent, and source posture for answer engines.

Citation policy

Pages use short primary-source blockquotes and citation-ready callouts, but most source material is paraphrased. This keeps the site useful without copying long sections of vendor documentation or protocol text.