Basis Theory

io.usefulapiv1.0.0Updated Sep 29, 2026

Read token metadata, applications, audit logs, proxies and usage in the PCI vault.

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Overview

AI-generated overview

Lets an assistant read token metadata, applications, audit logs, proxies, reactors and usage from a Basis Theory PCI vault.

What it does
A hosted, read-only MCP server for Basis Theory. It exposes tools to list, search and fetch tokens, list and get applications, list audit logs and log entity types, list and get proxies and reactors, list permissions and roles, and read tenant details, tenant usage and tenant members. All listed tools are marked read-only.
When to use it
Useful when you want an assistant to inspect Basis Theory vault configuration and activity without opening the dashboard: reviewing token metadata, checking which applications, proxies or reactors exist, or reading audit logs and usage for a tenant.
Requirements
A remote MCP endpoint; no local install or package. You need Basis Theory credentials, which are pasted on first connect and stored per user by the provider. Network access to the hosted endpoint is required.
Before you install
Basis Theory credentials are pasted into the hosted service and stored per user, so the provider holds them; consider whether that is acceptable for your account. The free plan is limited to 100 tool calls per month, and paid plans cost $9/mo or $90/yr. The tools are described as read-only, but audit logs, token metadata and tenant data are sensitive.

Installation

In SourceWeft

  1. Open Basis Theory in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "basis-theory": {
      "type": "http",
      "url": "https://basis-theory.usefulapi.io/mcp"
    }
  }
}

README

Basis Theory MCP by usefulapi

Read token metadata, applications, audit logs, proxies and usage in the PCI vault. Hosted, no local install.

Live endpoint: https://basis-theory.usefulapi.io/mcp · Homepage: https://usefulapi.io

Add to Claude

json
{  "mcpServers": {    "basis-theory": {      "url": "https://basis-theory.usefulapi.io/mcp"    }  }}

On first connect you'll paste your Basis Theory credentials. They are validated, stored per-user, and scoped to you — no keys in config files.

Tools

ToolTypeWhat it does
basis_theory_list_tokensreadList tokens
basis_theory_search_tokensreadSearch tokens
basis_theory_get_tokenreadGet one token
basis_theory_list_applicationsreadList applications
basis_theory_get_applicationreadGet one application
basis_theory_whoamireadIdentify the configured key
basis_theory_list_logsreadList audit logs
basis_theory_list_log_entity_typesreadList log entity types
basis_theory_list_proxiesreadList proxies
basis_theory_get_proxyreadGet one proxy
basis_theory_list_reactorsreadList reactors
basis_theory_get_reactorreadGet one reactor
basis_theory_list_permissionsreadList permissions
basis_theory_list_rolesreadList roles
basis_theory_get_tenantreadGet the tenant
basis_theory_get_tenant_usagereadGet the tenant usage report
basis_theory_list_tenant_membersreadList tenant members

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage or manage your subscription.

Pricing

PlanPriceLimit
Free$0100 tool calls / month
Pro$9/mo or $90/yr (2 months free)Unlimited

License

MIT

Source: servers/basis-theory/README.md at commit e28f9c1

Tools

0
Tool metadata has not been indexed yet.

Version history

1
  1. v1.0.0LatestSep 29, 2026