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opchain

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opchain.dev

Claude Code / MCP skills for the dev pipeline: discover, spec, design, build, ship, operate.

https://opchain.dev/mcpWebsiteNo authMCP 2026-07-28v0f3410clast checked 18 Oct 2026spoke MCP on 100% of 84 checks (30 days)initialize in 207 ms

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 opchain https://opchain.dev/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://opchain.dev/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://opchain.dev/mcp.

ChatGPT docs · read on 2026-08-30

✓CursorConnects

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

{
  "mcpServers": {
    "opchain": {
      "url": "https://opchain.dev/mcp"
    }
  }
}

Cursor docs · read on 2026-08-30

✓VS Code (Copilot)Connects

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

{
  "servers": {
    "opchain": {
      "type": "http",
      "url": "https://opchain.dev/mcp"
    }
  }
}

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

How to authenticate

Checked against the endpoint by our probe on 18 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; 7 tools listable

What the probe found

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

create_checkpoint_sessionget_orchestratorget_skilllist_skillsread_checkpointroutewrite_checkpoint

Contract history

8 Oct 2026v0f3410cno contract changes

27 Sep 2026v0f3410cno contract changes

19 Sep 2026v8bad1a0no contract changes

17 Sep 2026vf196207no contract changes

15 Sep 2026vd4f926bno contract changes

14 Sep 2026v5f06afd44 compatible1 cosmeticinstructions rewritten

Instructions rewritten: opchain://skill/oc-telemetry-ops. The description an agent follows changed; the callable contract may not have.

14 Sep 2026vf5e4b2a1 compatible6 cosmeticinstructions rewritten

Instructions rewritten: write_checkpoint, opchain://skill/oc-app-architect, opchain://skill/oc-deploy-ops, opchain://skill/oc-git-ops, opchain://skill/oc-monitoring-ops, opchain://skill/oc-ux-engineer. The description an agent follows changed; the callable contract may not have.

5 Sep 2026v78567c2no contract changes

3 Sep 2026v244bf132 breaking10 compatibleinstructions rewritten

Breaking: read_checkpoint, write_checkpoint

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

2 Sep 2026vf014746first recorded contract

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Status badge

Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.

[![MCP status](https://mcpi.app/servers/opchain/badge.svg)](https://mcpi.app/servers/opchain)