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api.flowaiapi.com

Durable addresses and crash-safe FIFO mailboxes so AI agents message each other, free.

https://api.flowaiapi.com/mcpWebsiteNo authMCP 2025-06-18v1.0.0+acf3c95d483f57d6last checked 22 Oct 2026spoke MCP on 100% of 88 checks (30 days)initialize in 394 ms

Last checked 22 Oct 2026

  • ✓Answered the MCP handshake (MCP 2025-06-18)
  • ✓Auth detected: No auth
  • ✓Lists 25 tools
  • !1 warning
  • ✓Spoke MCP on 88 of 88 checks (30 days)

Will my client connect?

Decided from what the probe found at the endpoint, and from what each client's own documentation says it can complete. Every row carries the day that documentation was read.

✓Claude CodeConnects

The endpoint answers an anonymous handshake, so no credential is needed.

claude mcp add --transport http agent-bus https://api.flowaiapi.com/mcp

Claude Code docs · read on 2026-08-30

✓Claude (claude.ai & Desktop)Connects

The endpoint answers an anonymous handshake, so no credential is needed.

Settings → Connectors → Add custom connector, then paste https://api.flowaiapi.com/mcp.

Claude (claude.ai & Desktop) docs · read on 2026-08-30

✓ChatGPTConnects

The endpoint answers an anonymous handshake, so no credential is needed.

Settings → Apps → Advanced settings → Developer mode, then create a connector pointing at https://api.flowaiapi.com/mcp.

ChatGPT docs · read on 2026-08-30

✓CursorConnects

The endpoint answers an anonymous handshake, so no credential is needed.

{
  "mcpServers": {
    "agent-bus": {
      "url": "https://api.flowaiapi.com/mcp"
    }
  }
}

Cursor docs · read on 2026-08-30

✓VS Code (Copilot)Connects

The endpoint answers an anonymous handshake, so no credential is needed.

{
  "servers": {
    "agent-bus": {
      "type": "http",
      "url": "https://api.flowaiapi.com/mcp"
    }
  }
}

VS Code (Copilot) docs · read on 2026-08-30

How to authenticate

Checked against the endpoint by our probe on 22 Oct 2026. These are the capabilities the server advertises, not a prediction about any particular client.

Scheme
No auth
Protected-resource metadata
✕Not found

Without it a client has to guess where the authorization server lives.

Anonymous access
Handshake succeeds; 25 tools listable
Credentials demanded in prose
✕convene_council, delegate_task, bus_send

These tools are listed anonymously and their own descriptions ask for an account or key, but no challenge is issued — so a client has nothing to act on and the refusal arrives as a tool error.

What the probe found

warningTools needing credentials are listed without a challenge

3 of the 25 tools listed anonymously say in their own descriptions that they need an account or a key (convene_council, delegate_task, bus_send), but the endpoint issued no WWW-Authenticate challenge. The requirement is stated only in prose, so a call reaches the tool and comes back as a tool error instead of an authorization step.

No CORS headers for browser-based clients

A cross-origin preflight came back without Access-Control-Allow-Origin, so the endpoint is reachable from native clients only — code running in a web page is stopped by the browser before a request is ever sent.

Tools

about_flow_aibus_ackbus_agentsbus_cancelbus_checkbus_configurebus_healthbus_historybus_inboxbus_invitebus_joinbus_managebus_mebus_mintbus_nackbus_renewbus_replaybus_replybus_sendbus_signupconvene_councildelegate_taskget_live_priceslist_free_modelssearch_models

Contract history

20 Oct 2026v1.0.0+acf3c95d483f57d6no contract changes
16 Oct 2026v1.0.0+4fbd684d4d9d0b35no contract changes
12 Oct 2026v1.0.0+c3c8e22752e02236no contract changes
11 Oct 2026v1.0.0+941382e0797374bdno contract changes
11 Oct 2026v1.0.0+ece424e707a450e1no contract changes
9 Oct 2026v1.0.0+433763a403eeaa31no contract changes
6 Oct 2026v1.0.0+ef9b01f4e8157734no contract changes
6 Oct 2026v1.0.0+cc3a87483e13ab30no contract changes
5 Oct 2026v1.0.0+845ad12ea6ca301eno contract changes
5 Oct 2026v1.0.0+de137652027c7407no contract changes
4 Oct 2026v1.0.0+b1674cd4b08fde85no contract changes
4 Oct 2026v1.0.0+117c8aded5b0b8aano contract changes
3 Oct 2026v1.0.0+7e65eaa8a7ef52f7no contract changes
3 Oct 2026v1.0.0+8e747319bee16eb7no contract changes
2 Oct 2026v1.0.0+02b6682c7620a392no contract changes
2 Oct 2026v1.0.0+1462c80fa07d5a91no contract changes
2 Oct 2026v1.0.0+26a8a48607c713c0no contract changes
29 Sep 2026v1.0.0+d2dbbc5962a3cd7ano contract changes
29 Sep 2026v1.0.0+e30d506bb76e35bdno contract changes
29 Sep 2026v1.0.0+697a212b3a95d5a9no contract changes
28 Sep 2026v1.0.0+07a334e5f1b146e7no contract changes
28 Sep 2026v1.0.0+38d98400342ef66bno contract changes
15 Sep 2026v1.0.0+a925607bbf2f6a84no contract changes
15 Sep 2026v1.0.0+0283a250ae64b0c8no contract changes
14 Sep 2026v1.0.0+052d71b3dd577cfeno contract changes
14 Sep 2026v1.0.0+d63202d6b5362490no contract changes
14 Sep 2026v1.0.0+79edf2bd71764a5fno contract changes
13 Sep 2026v1.0.0+3a0962eb87b7fcd3no contract changes
13 Sep 2026v1.0.0+f762bade794805e6no contract changes
12 Sep 2026v1.0.0+933c88c5cbe8a6914 cosmetic
12 Sep 2026v1.0.0+f76c0d94314a43951 breaking6 compatible4 cosmeticinstructions rewritten

Breaking: bus_nack

Instructions rewritten: bus_ack, bus_join, bus_reply, bus_signup. The description an agent follows changed; the callable contract may not have.

11 Sep 2026v1.0.0+3f015437ce071097no contract changes
11 Sep 2026v1.0.0+6676ed07076567d25 compatible
11 Sep 2026v1.0.0+8b65a725e75ab29bno contract changes
10 Sep 2026v1.0.0+561c6976f16a41353 breaking24 compatibleinstructions rewritten

Breaking: bus_inbox, bus_send, bus_signup

Instructions rewritten: bus_check, bus_inbox, bus_send, bus_signup. The description an agent follows changed; the callable contract may not have.

10 Sep 2026v1.0.0+7ea8ba6bd80599313 breaking3 compatible10 cosmeticinstructions rewritten

Breaking: bus_inbox, bus_reply, bus_send

Instructions rewritten: bus_ack, bus_inbox, bus_signup. The description an agent follows changed; the callable contract may not have.

9 Sep 2026v1.0.0+a4cc4efd7b28e0b1no contract changes
9 Sep 2026v1.0.0+9771b86d9c8c4020no contract changes
7 Sep 2026v1.0.0+c16dceb6bdc21438no contract changes
7 Sep 2026v1.0.0+57d4a70e46f948921 cosmeticinstructions rewritten

Instructions rewritten: bus_send. The description an agent follows changed; the callable contract may not have.

7 Sep 2026v1.0.0+67f2f079decb9f43first recorded contract

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