Agentcard website screenshot

Agentcard

Agentcard is a Y Combinator (Summer 2026) startup building card-issuing payments infrastructure for AI agents. It issues virtual Visa cards that are funded with a fixed USD amount and close after their first charge, giving agents scoped, single-use spending power with hard budget limits and no overdraft risk. Access is available three ways over one host: a REST v2 API, a hosted Model Context Protocol (MCP) server, and first-party CLIs. There are two products: Personal (an individual gives their own agent a card, funded via Apple Pay / Google Pay) and Companies ("Connect with Agentcard" — a platform issues cards to many users through OAuth 2.1 + PKCE). The platform covers user connect, identity verification (KYC), wallet funding, withdrawals, virtual card creation, transactions, and merchant shopping (buy) with HMAC-signed webhooks and a sandbox mode split from live by credential.

Agentcard publishes 5 APIs on the APIs.io network, including Authentication API, Connect API, Identity verification API, and 2 more. Tagged areas include Company, Payments, Virtual Cards, Card Issuing, and AI Agents.

The Agentcard catalog on APIs.io includes 2 event-driven AsyncAPI specifications.

Agentcard’s developer surface includes documentation, API reference, getting-started guide, quickstart, support, engineering blog, pricing, and 30 more developer resources.

58.0/100 developing ▬ flat Agent 84/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
5 APIs 1 MCP Servers
CompanyPaymentsVirtual CardsCard IssuingAI AgentsAgentic CommerceMCPFintechWalletVisa

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 58.0/100 · developing
Contract Quality 17.7 / 25
Developer Ergonomics 18.3 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 3.8 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 84/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/agentcard: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

Agentcard Authentication API

Exchange your client credentials for a platform access token, and introspect what a token acts as.

Agentcard Connect API

Connect a user to your platform: send a one-time code, verify it, record consent, and keep the connection alive.

Agentcard Identity verification API

Verify a connected user's identity: upload their ID, submit any extra fields we ask for, then show a short face scan.

Agentcard Wallet funding API

Fund a connected user's wallet from your own UI — request a payment link, relay the phone verification code, and poll until the funds land.

Agentcard Withdrawals API

Move money out of a connected user's wallet — to a saved bank account or a crypto address on Base. Transfers are processed manually by the Agentcard team, usually within 1-3 bus...

Arazzo Workflows 3

Multi-step API workflows described with the Arazzo specification.

_Index

ARAZZO

Agentcard — connect a user and verify identity

Connect an end user, record consent, and run identity verification (KYC) end to end.

ARAZZO

Agentcard — verify phone and fund wallet

Verify a user's phone, create an Apple/Google Pay funding session, and poll it to completion.

ARAZZO

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

agentcard-mcp.yml

MCP SERVER

Event Specifications 2

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Agentcard Webhooks

Event notifications Agentcard delivers to destinations you register in the dashboard. Every delivery is a POST with a signed envelope { id, type, created, livemode, data }. Veri...

ASYNCAPI

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Agentcard Authentication

http/oauth2 · 2 schemes

SECURITY

Agentcard Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Agentcard Agentic Access

21 operations · 15 acting

21 operations · 15 acting

AGENTIC

Resources

Get Started 5

Portal, sign-up, and the first successful call

Documentation 3

Reference material describing how the API behaves

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 9

Pagination, idempotency, versioning, errors, and events

Scroll for all 9

Build 5

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: agentcard
name: Agentcard
description: 'Agentcard is a Y Combinator (Summer 2026) startup building card-issuing payments infrastructure for AI agents.
  It issues virtual Visa cards that are funded with a fixed USD amount and close after their first charge, giving agents scoped,
  single-use spending power with hard budget limits and no overdraft risk. Access is available three ways over one host: a
  REST v2 API, a hosted Model Context Protocol (MCP) server, and first-party CLIs. There are two products: Personal (an individual
  gives their own agent a card, funded via Apple Pay / Google Pay) and Companies ("Connect with Agentcard" — a platform issues
  cards to many users through OAuth 2.1 + PKCE). The platform covers user connect, identity verification (KYC), wallet funding,
  withdrawals, virtual card creation, transactions, and merchant shopping (buy) with HMAC-signed webhooks and a sandbox mode
  split from live by credential.'
url: https://raw.githubusercontent.com/api-evangelist/agentcard/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://www.agentcard.sh/favicon.ico
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: profiled
x-tier-reason: enriched-from-portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-17'
tags:
- Company
- Payments
- Virtual Cards
- Card Issuing
- AI Agents
- Agentic Commerce
- MCP
- Fintech
- Wallet
- Visa
apis:
- aid: agentcard:agentcard-authentication-api
  name: Agentcard Authentication API
  description: Exchange your client credentials for a platform access token, and introspect what a token acts as.
  humanURL: https://docs.agentcard.sh/companies/api/overview
  baseURL: https://api.agentcard.sh
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/agentcard-authentication-api-openapi.yml
- aid: agentcard:agentcard-connect-api
  name: Agentcard Connect API
  description: 'Connect a user to your platform: send a one-time code, verify it, record consent, and keep the connection
    alive.'
  humanURL: https://docs.agentcard.sh/companies/api/overview
  baseURL: https://api.agentcard.sh
  tags:
  - Connect
  properties:
  - type: OpenAPI
    url: openapi/agentcard-connect-api-openapi.yml
- aid: agentcard:agentcard-identity-verification-api
  name: Agentcard Identity verification API
  description: 'Verify a connected user''s identity: upload their ID, submit any extra fields we ask for, then show a short
    face scan.'
  humanURL: https://docs.agentcard.sh/companies/api/overview
  baseURL: https://api.agentcard.sh
  tags:
  - Identity verification
  properties:
  - type: OpenAPI
    url: openapi/agentcard-identity-verification-api-openapi.yml
- aid: agentcard:agentcard-wallet-funding-api
  name: Agentcard Wallet funding API
  description: Fund a connected user's wallet from your own UI — request a payment link, relay the phone verification code,
    and poll until the funds land.
  humanURL: https://docs.agentcard.sh/companies/api/overview
  baseURL: https://api.agentcard.sh
  tags:
  - Wallet funding
  properties:
  - type: OpenAPI
    url: openapi/agentcard-wallet-funding-api-openapi.yml
- aid: agentcard:agentcard-withdrawals-api
  name: Agentcard Withdrawals API
  description: Move money out of a connected user's wallet — to a saved bank account or a crypto address on Base. Transfers
    are processed manually by the Agentcard team, usually within 1-3 business days.
  humanURL: https://docs.agentcard.sh/companies/api/overview
  baseURL: https://api.agentcard.sh
  tags:
  - Withdrawals
  properties:
  - type: OpenAPI
    url: openapi/agentcard-withdrawals-api-openapi.yml
common:
- type: Website
  url: https://www.agentcard.sh
- type: DeveloperPortal
  url: https://docs.agentcard.sh
- type: Documentation
  url: https://docs.agentcard.sh
- type: APIReference
  url: https://docs.agentcard.sh/companies/api/reference
- type: GettingStarted
  url: https://docs.agentcard.sh/companies/getting-started/quickstart
- type: Quickstart
  url: https://docs.agentcard.sh/personal/quickstart
- type: Support
  url: https://docs.agentcard.sh/personal/support
- type: Blog
  url: https://www.agentcard.sh/blog/
- type: GitHubOrganization
  url: https://github.com/agentcard
- type: Pricing
  url: https://docs.agentcard.sh/personal/plans
- type: SignUp
  url: https://app.agentcard.sh
- type: TermsOfService
  url: https://www.agentcard.sh/terms
- type: PrivacyPolicy
  url: https://www.agentcard.sh/privacy
- type: Postman
  url: https://docs.agentcard.sh/companies/api/postman
- type: StatusPage
  url: https://agentcard.checkly-status-page.com
- type: Authentication
  url: authentication/agentcard-authentication.yml
- type: AgenticAccess
  url: agentic-access/agentcard-agentic-access.yml
- type: DomainSecurity
  url: security/agentcard-domain-security.yml
- type: Packages
  url: packages/agentcard-packages.yml
- type: SDKs
  url: packages/agentcard-packages.yml
- type: CLI
  url: cli/agentcard-cli.yml
- type: MCPServer
  url: mcp/agentcard-mcp.yml
- type: LLMsTxt
  url: llms/agentcard-llms.txt
- type: WellKnown
  url: well-known/agentcard-well-known.yml
- type: APICatalog
  url: well-known/agentcard-api-catalog.json
- type: ErrorCatalog
  url: errors/agentcard-problem-types.yml
- type: Conventions
  url: conventions/agentcard-conventions.yml
- type: Idempotency
  url: conventions/agentcard-conventions.yml
- type: Lifecycle
  url: lifecycle/agentcard-lifecycle.yml
- type: Sandbox
  url: sandbox/agentcard-sandbox.yml
- type: Conformance
  url: conformance/agentcard-conformance.yml
- type: DataModel
  url: data-model/agentcard-data-model.yml
- type: AsyncAPI
  url: asyncapi/agentcard-webhooks-asyncapi.yml
- type: Webhooks
  url: asyncapi/agentcard-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Arazzo
  name: Connect a user and verify identity
  url: arazzo/agentcard-connect-and-verify.arazzo.yml
- type: Arazzo
  name: Verify phone and fund wallet
  url: arazzo/agentcard-fund-wallet.arazzo.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence