The rails under the agent economy

Open protocol, hosted by the Linux Foundation, for agents to discover each other through Agent Cards and collaborate over HTTP using JSON-RPC.

discovery, agent-cards, json-rpc

Transaction infrastructure that structures supply, rights, workflows, and proof for asset and capacity markets. Its open CLP protocol binds signatures, authorization, and payment events into content-addressed proof bundles.

assets, capacity, proof

Protocol suite whose 1.2 release covers agent identity, naming, description, and discovery, with DID authentication for did:wba and did:web. Authorization and payment specs are still drafts, and group end to end encryption is a candidate.

identity, discovery, did

Open standard for an agent to browse a catalog, run a checkout session, and pass a delegated payment to a business.

commerce, checkout, delegation

Open stack, hosted by the Linux Foundation, for cross vendor agent discovery, identity, messaging, and observability.

discovery, identity, messaging

Decentralized compute marketplace where independent providers bid to host workloads.

compute, capacity, marketplace

Open payment extension for A2A and UCP that records checkout and payment authorization as signed mandates. Public samples exist while FIDO continues the standards work.

mandates, cards, stablecoins

Open network where independent subnets produce digital commodities and the chain pays contributors.

compute, data, incentives

Library that runs the Claude Code agent loop in a process you operate, with built in tools, permissions, sessions, hooks, and subagents.

orchestration, tools, permissions

Wallet for agents on Coinbase Developer Platform. The agent holds USDC, sends, trades, and pays x402 services through the awal CLI and skills, under per session and per transaction caps, while keys stay in Coinbase infrastructure. The MCP version is labeled beta.

wallets, stablecoins, http-402, spend-limits

Open source framework that pairs event driven Flows for control flow with Crews of role based agents that collaborate on a delegated task.

multi-agent, orchestration, python

Draft Ethereum proposal for three registries: an ERC-721 identity that points at an agent registration file, a reputation registry, and a validation registry.

registries, reputation, ethereum

Open infrastructure where humans and machines trade compute, data, and information in on-chain markets, with a peer-to-peer layer that carries MCP and A2A.

compute, data, information

Open source framework for building, debugging, and deploying agents, including graph workflows and multi agent orchestration.

orchestration, multi-agent, tools

Python framework that runs input and output guards to detect and mitigate specific risks, and can also extract structured data from model output.

guardrails, validation, policy

Owner funded spending account on Hedera. The owner sets a daily cap, a per transaction maximum, and a recipient allowlist in a smart contract, and can revoke the agent. Hedera says public testnet access is still forthcoming.

wallets, spend-limits

Contextual security layer that checks an agent trace against declarative rules for tool calls, data flow, secrets, and looping.

guardrails, policy, traces

HTTP 402 flow that pairs a macaroon with a Lightning invoice. The client pays, then presents the preimage so the server can check payment without a lookup.

http-402, lightning, macaroons

Guard API that screens an agent conversation in one call, including tool definitions, tool calls, and tool results, against a project policy.

guardrails, tool-calls, policy

Low level orchestration runtime for long running stateful agents, with durable execution and human checkpoints inside the graph.

orchestration, approvals, state

Open source proxy that enforces personal, team, and agent spend budgets on model calls when a database is connected, and can attach guardrails.

budgets, spend-limits, guardrails

Open HTTP 402 protocol, co-authored by Stripe and Tempo, so an agent can authorize payment for an API with a card or a stablecoin and receive a receipt.

http-402, cards, stablecoins

Open source TypeScript framework for agents and workflows, with memory, tool approvals, and processors that can block or redact content.

typescript, orchestration, approvals

Agent wallet CLI for sending tokens and paying x402 requests. Guard Mode can enforce address and recipient allowlists and a rolling 24 hour outflow limit, and it asks for 2FA outside that policy.

wallets, spend-limits, http-402

Open framework for building and orchestrating agents and multi agent workflows in Python and .NET, with graph workflows and human checkpoints.

multi-agent, orchestration, approvals

Identity platform that creates agent identities from blueprints and applies Entra access policy, risk checks, and audit logs to them.

enterprise, oauth, audit

Open protocol that connects LLM applications to external tools, resources, and prompts through a standard request interface.

tools, resources, prompts

Open source toolkit for programmable rails that block, alter, or validate user inputs, model responses, and tool calls.

guardrails, policy, tool-calls

Payments facilitator that verifies and settles x402 and MPP charges against a payment plan, with metering and delegated card spending.

http-402, metering, cards

Marketplace where an agent can hire a specialized agent for a task and pay in crypto, or list its own service for other agents to hire.

agents, services, marketplace

Open source policy engine. An application sends structured input and OPA returns a decision from Rego policy, separate from the code that enforces it.

policy, mandates, rego

Library that runs an agent loop in your application, with tools, handoffs, guardrails, sessions, and human approval before a tool runs.

orchestration, tools, approvals

Protocol on A2A 1.0 that lets a personal agent sign its requests and act for a user only inside scopes that user approved with a brand.

consent, identity, a2a

Draft protocol for a company to publish how a personal agent may sign in and act on a person's account, using OAuth, OpenAPI, and MCP.

consent, oauth, discovery

Agent CLI with an embedded smart wallet. Session mode spends only inside an allowance the owner approves, x402 payments can be capped per call, and session logout revokes that install.

wallets, spend-limits, http-402

Typed Python agent SDK with structured outputs, guardrails, and companion packages for graph control flow and spending limits.

python, orchestration, guardrails

Peer to peer marketplace that matches GPU supply with demand for rendering and machine learning jobs.

gpu, capacity, marketplace

Issues signed KYAPay tokens that bind an agent identity to a payment the buyer has committed, which the seller charges after delivery.

wallets, identity, kya

Open source Python library whose code agents write actions as code, with an option to run that code in a sandbox.

python, tools, code-agents

Open source SDK that runs a model driven agent loop, with hooks, execution limits, and guardrails around each step.

orchestration, guardrails, tools

CLI for an agent to request a card purchase or a Machine Payments Protocol charge. Link asks the customer to approve the spend request, then returns a one time payment credential.

cards, spend-limits, http-402

Testnet gateway where an agent pays per API call in USDC on Sui. The owner sets an onchain grant with allowed services, a total budget, a per payment cap, and an expiry, and can revoke it.

http-402, spend-limits, stablecoins

Wallet and CLI that let an agent discover paid services, preview MPP terms, and pay under a max spend cap.

wallets, http-402, spend-limits

Open commerce protocol so agents, businesses, and payment providers can negotiate checkout and identity linking over REST, MCP, or A2A.

commerce, checkout, discovery

Agent commerce protocol where agents discover services, negotiate jobs, coordinate execution, and settle payments with each other.

agents, services, marketplace

Visa specification for merchants to verify an approved agent from an RFC 9421 HTTP message signature bound to the site and the action, with optional consumer and payment identifiers. Visa reports live agent purchases at European merchants through it and its Agent Directory.

http-signatures, merchants, cards, agent-verification

Method for an automated client to sign HTTP requests so a site can verify which bot or agent sent them. The signature rules are an IETF working group draft, not yet a standard.

http-signatures, bots, draft

Open HTTP payment standard. A server answers with status 402, the client pays and retries, and a facilitator can verify and settle the payment.

http-402, stablecoins, pay-per-call