aid: liquidagent-ai
name: Liquid Agent
description: >-
  Liquid Agent is an agent-native money layer on Base: a USDC account for people (yield, payments and
  stocks from one balance, through the app) and, for AI agents, a permissionless HTTP API at
  api.liquidagent.ai that mints a self-custodied ERC-4626 vault holding Coinbase's tokenized NVDA, META,
  AAPL and GOOGL, buys in from $1, sets custom weights, rebalances and exits to USDC or in-kind any block.
  Reads are free and need no key; every write returns unsigned calldata the agent signs with its own
  wallet. Three paid surfaces settle per call in USDC over x402 v2: basket rebalancing signals ($0.04), a
  shareable portfolio page ($0.25) and an ERC-4337 / ERC-7677 gas sponsor (from $0.03) on Base, Polygon
  and Solana. The contract is a 17-operation OpenAPI 3.1.0 at api.liquidagent.ai/openapi.json, with an
  A2A agent card, llms.txt, agents.txt, an x402 resource catalog, an ERC-8004 on-chain identity and two
  provider-authored Agent Skills in the open-source examples repo.
url: https://raw.githubusercontent.com/api-evangelist/liquidagent-ai/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - liquidagent/liquidagentx402
  open_source: unknown
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - openapi
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
image: https://liquidagent.ai/icon.png
x-type: company
x-source: harvest:a2a-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-09-19 (local-v3; was a2a-registry harvest stub)
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- Tokenized Stocks
- DeFi
- Investing
- Agentic Commerce
- x402
- Stablecoins
- Account Abstraction
- Gas Sponsorship
- Base
- Solana
- AI Agents
- Agent-Native
- A2A
- Portfolio Management
- Market Data
tags_raw:
- Tokenized Stocks
- DeFi
- Investing
- Agentic Commerce
- x402
- Stablecoins
- Account Abstraction
- Gas Sponsorship
- Base
- Solana
- AI Agents
- agent-native
- A2A
- Portfolio Management
- Market Data
- Portfolio-Management
apis:
- aid: liquidagent-ai:liquidagent-ai-liquid-agent-api
  name: Liquid Agent Liquid Agent API
  description: The Liquid Agent API from Liquid Agent — 15 operation(s) for liquid agent.
  humanURL: https://api.liquidagent.ai/v1/guide
  baseURL: https://api.liquidagent.ai
  tags:
  - Liquid Agent
  properties:
  - type: OpenAPI
    url: openapi/liquidagent-ai-liquid-agent-api-openapi.yml
  - type: Documentation
    url: https://api.liquidagent.ai/v1/guide
  - type: APIReference
    url: https://api.liquidagent.ai/openapi.json
  - type: GettingStarted
    url: https://github.com/LiquidAgent/liquidagentx402#readme
  - type: Examples
    url: https://github.com/LiquidAgent/liquidagentx402/tree/main/examples
  - type: LLMsTxt
    url: llms/liquidagent-ai-llms.txt
  - type: LLMsTxt
    url: https://api.liquidagent.ai/llms.txt
  - type: Authentication
    url: authentication/liquidagent-ai-authentication.yml
  - type: Conventions
    url: conventions/liquidagent-ai-conventions.yml
  - type: ErrorCatalog
    url: errors/liquidagent-ai-problem-types.yml
  - type: DataModel
    url: data-model/liquidagent-ai-data-model.yml
  - type: Plans
    url: plans/liquidagent-ai-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/liquidagent-ai-rate-limits.yml
  - type: Conformance
    url: conformance/liquidagent-ai-conformance.yml
  - type: Lifecycle
    url: lifecycle/liquidagent-ai-lifecycle.yml
  - type: AgenticAccess
    url: agentic-access/liquidagent-ai-agentic-access.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/liquidagent-ai-openapi-overlay.yaml
- type: AgentSkill
  url: skills/liquidagent-ai-liquid-agent-stocks.md
- type: AgentSkill
  url: skills/liquidagent-ai-liquid-gas-sponsor.md
- type: Website
  url: https://liquidagent.ai/
- type: GitHubOrganization
  url: https://github.com/LiquidAgent
- type: SourceCode
  name: liquidagentx402 (open-source examples, OpenAPI, llms.txt and Agent Skills, MIT)
  url: https://github.com/LiquidAgent/liquidagentx402
- type: Twitter
  name: X @LiquidAgentAI (declared on the GitHub organization profile)
  url: https://x.com/LiquidAgentAI
- type: StatusPage
  name: Self-measured status (uptime, schema validity, latency; JSON)
  url: https://api.liquidagent.ai/v1/status
- type: Pricing
  name: x402 resource catalog (machine-readable per-call prices)
  url: https://api.liquidagent.ai/.well-known/x402-resources
- type: Plans
  url: plans/liquidagent-ai-plans-pricing.yml
- type: AgentCard
  url: a2a/liquidagent-ai-a2a.yml
- type: AgentCard
  name: A2A agent card (provider-hosted)
  url: https://api.liquidagent.ai/.well-known/agent-card.json
- type: WellKnown
  url: well-known/liquidagent-ai-well-known.yml
- type: LLMsTxt
  url: llms/liquidagent-ai-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Packages
  url: packages/liquidagent-ai-packages.yml
- type: DomainSecurity
  url: security/liquidagent-ai-domain-security.yml
- type: X-RegulatoryPosture
  url: regulatory/liquidagent-ai-regulatory-posture.yml
x-enrichment:
  date: '2026-09-19'
  status: enriched
  artifacts_added: 28
  pass: local-v3
x-x402:
  verified: true
  probed: '2026-09-24'
  url: "https://api.liquidagent.ai/v1/gas"
  evidence:
  - "header:payment-required"
  - "header:x-payment-required"
  - "body:x402Version"
  - "body:accepts[scheme,payTo,asset]"
  control: 404