aid: tarx-com
name: TARXAN Inc
description: >-
  TARXAN Inc (TARX, Austin TX) builds a local-first AI agent runtime: free TARX_OS / TARX Desktop
  software for Apple Silicon Macs, a shell CLI that installs a local inference daemon and local MCP
  servers, an optional hosted "Supercomputer" reached through an OpenAI-compatible API
  (api.tarx.com/v1, model t-supercomputer), and dedicated "Black Box" and humanoid/quadruped hardware.
  Its public agent surface is a remote MCP server at mcp.tarx.com/mcp (22 anonymous tools, OAuth 2.0
  + PKCE for private memory, RFC 8414/9728 metadata) advertised by an A2A 0.3.0 agent card at
  tarx.com/.well-known/agent-card.json and a prose "cairn" (we.txt, skill.md, courier.md) that tells
  visiting agents how to register a Soul through plain REST on tarx.com/api. No OpenAPI is published.
image: https://tarx.com/tarx-logo.png
url: https://raw.githubusercontent.com/api-evangelist/tarx-com/refs/heads/main/apis.yml
x-type: company
x-source: harvest:a2a-registry
x-tier: profiled
x-tier-reason: full enrichment pass 2026-09-19 (local-v3)
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- Company
- AI Agents
- Agent Runtime
- Local-First AI
- Private AI
- MCP
- A2A
- LLM
- Inference
- Developer Tools
- Hardware
- Robotics
apis:
- name: TARX Remote MCP Server
  description: >-
    Streamable-HTTP MCP server (serverInfo tarx 3.18.0, protocol 2025-06-18) exposing 22 tools, 5
    prompts and 5 resources anonymously — public TARX context search/fetch, install guidance,
    runtime status, GitHub repo context — with private memory and session tools gated on OAuth 2.0
    authorization_code + PKCE (scopes public, user, chatgpt_private_memory). A local stdio variant is
    installed by the TARX CLI. This is also the endpoint the A2A agent card declares as its url.
  image: https://tarx.com/tarx-logo.png
  humanURL: https://howdy.tarx.com/mcp
  baseURL: https://mcp.tarx.com/mcp
  tags:
  - MCP
  - AI Agents
  - Agent Memory
  properties:
  - type: MCPServer
    url: mcp/tarx-com-mcp.yml
  - type: Documentation
    url: https://docs.tarx.com/developers/mcp
  - type: Documentation
    name: OpenAI Agents MCP
    url: https://docs.tarx.com/developers/mcp-openai-agents
  - type: Documentation
    name: Claude Desktop MCP
    url: https://docs.tarx.com/developers/mcp-claude-desktop
  - type: OAuthScopes
    url: scopes/tarx-com-scopes.yml
  - type: Authentication
    url: authentication/tarx-com-authentication.yml
  - type: AgenticAccess
    url: agentic-access/tarx-com-agentic-access.yml
- name: TARX Supercomputer API
  description: >-
    OpenAI-compatible hosted inference API. GET /v1/models lists the single model t-supercomputer
    (owned_by tarx, OpenRouter slug tarx/t-supercomputer) without a key; POST /v1/chat/completions
    requires a per-account TARX API key (401 tarx_api_key_required). The docs describe the same
    request shape against a local runtime at 127.0.0.1:11440 with model tarx-local. Hosted capacity
    is labelled Pilot-ready; no OpenAPI, rate limits or pricing are published for it.
  image: https://tarx.com/tarx-logo.png
  humanURL: https://docs.tarx.com/developers/api
  baseURL: https://api.tarx.com/v1
  tags:
  - LLM
  - Inference
  - Chat Completions
  properties:
  - type: Documentation
    url: https://docs.tarx.com/developers/api
  - type: APIReference
    url: https://docs.tarx.com/reference/api
  - type: ErrorCatalog
    url: errors/tarx-com-problem-types.yml
  - type: Authentication
    url: authentication/tarx-com-authentication.yml
- name: TARX Courier and Souls API
  description: >-
    Plain REST endpoints on tarx.com documented only for visiting AI agents in we.txt, skill.md and
    courier.md: GET /api/courier/ping and /api/courier/tick (signed heartbeat naming the agent card
    and cairn hash), POST /api/courier/introduce (hand TARX a peer agent-card URL), POST /api/souls
    (register a "Soul" — a chosen context bundle; letter expires in 72 hours, key 30 days after last
    touch), POST /api/souls/:id/touch, and GET /api/rail/census (daily aggregate counts). No
    authentication is documented. robots.txt disallows /api/ for crawlers.
  image: https://tarx.com/tarx-logo.png
  humanURL: https://tarx.com/skill.md
  baseURL: https://tarx.com/api
  tags:
  - AI Agents
  - Agent Discovery
  properties:
  - type: Documentation
    name: we.txt (cairn hub)
    url: https://tarx.com/we.txt
  - type: Documentation
    name: courier.md
    url: https://tarx.com/courier.md
  - type: AgentSkill
    url: skills/tarx-com-skill.md
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/tarx-com-domain-security.yml
- type: Website
  url: https://tarx.com/
- type: Documentation
  url: https://docs.tarx.com
- type: DeveloperPortal
  url: https://howdy.tarx.com
- type: GettingStarted
  url: https://docs.tarx.com/start-here/quickstart
- type: Support
  url: https://tarx.com/support
- type: Contact
  url: https://docs.tarx.com/reference/contact
- type: Blog
  url: https://tarx.com/dispatches
- type: Blog
  name: Substack
  url: https://tarx.substack.com/
- type: GitHubOrganization
  url: https://github.com/tarx-ai
- type: Pricing
  url: https://docs.tarx.com/pricing/overview
- type: SignUp
  url: https://tarx.com/join
- type: TermsOfService
  url: https://tarx.com/terms
- type: PrivacyPolicy
  url: https://tarx.com/privacy
- type: ChangeLog
  url: https://docs.tarx.com/reference/changelog
- type: ChangeLog
  url: changelog/tarx-com-changelog.yml
- type: Security
  url: https://tarx.com/security
- type: About
  url: https://tarx.com/about
- type: AgentCard
  url: a2a/tarx-com-a2a.yml
- type: MCPServer
  url: mcp/tarx-com-mcp.yml
- type: LLMsTxt
  url: llms/tarx-com-llms.txt
- type: LLMsTxt
  name: docs.tarx.com llms.txt
  url: llms/tarx-com-docs-llms.txt
- type: LLMsTxt
  name: howdy.tarx.com llms.txt
  url: llms/tarx-com-howdy-llms.txt
- type: WellKnown
  url: well-known/tarx-com-well-known.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/tarx-com-agentic-access.yml
- type: Packages
  url: packages/tarx-com-packages.yml
- type: CLI
  url: cli/tarx-com-cli.yml
- type: Authentication
  url: authentication/tarx-com-authentication.yml
- type: OAuthScopes
  url: scopes/tarx-com-scopes.yml
- type: Conformance
  url: conformance/tarx-com-conformance.yml
- type: ErrorCatalog
  url: errors/tarx-com-problem-types.yml
- type: Lifecycle
  url: lifecycle/tarx-com-lifecycle.yml
- type: Conventions
  url: conventions/tarx-com-conventions.yml
- type: Plans
  url: plans/tarx-com-plans-pricing.yml
- type: RateLimits
  url: rate-limits/tarx-com-rate-limits.yml
- type: Sandbox
  url: sandbox/tarx-com-sandbox.yml
- type: JSONSchema
  name: Partner sandbox fixture schema
  url: json-schema/tarx-com-partner-sandbox-fixture-schema.json
- type: Examples
  name: Partner sandbox fixture
  url: examples/tarx-com-partner-sandbox-fixture.json
- type: RegulatoryPosture
  url: regulatory/tarx-com-regulatory-posture.yml
- type: DataSubjectRequest
  url: https://tarx.com/terms
- type: VulnerabilityDisclosure
  url: security/tarx-com-vulnerability-disclosure.yml
- type: Security
  url: security/tarx-com-vulnerability-disclosure.yml
x-contract-discovery:
  checked: '2026-09-19'
  openapi: none — tarx.com, docs.tarx.com, mcp.tarx.com /openapi.json|.yaml|swagger.json|api-docs|docs|redoc 404; api.tarx.com/v1/openapi.json JSON 404 ("Unknown endpoint"), every non-/v1 path on api.tarx.com Cloudflare 530; ai-plugin.json's api.url (mcp.tarx.com/openai-tools) is a function-calling export, not OpenAPI
  graphql: none — no /graphql surface referenced anywhere
  mcp: live — anonymous tools/list at https://mcp.tarx.com/mcp, saved verbatim (mcp/tarx-com-mcp-tools.json)
  a2a: live — https://tarx.com/.well-known/agent-card.json (and legacy agent.json, and www), saved verbatim
  asyncapi_webhooks: none — provider states no webhook contract is live
  grpc_wsdl_ogc: none
x-pointer-verification:
  checked: '2026-09-19'
  note: Every external common[] and properties[] URL above was fetched during this pass and returned 200 (tarx.com/pricing was NOT used because it 308s to /shop; status.tarx.com does not resolve; tarx.com/docs is 404 — none of those are wired).
x-enrichment:
  date: '2026-09-19'
  status: enriched
  artifacts_added: 36
  pass: local-v3