opchain MCP Server

by asfbay-bit Your server? Claim it

answering

opchain is answering right now. Last checked moments ago. It exposes 7 tools. Last commit 17 Sep 2026.

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

Uptime history 47 days of history

47 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

203 ms

Response time

average over 24h

Stars

last commit 17 Sep 2026

What changed 16

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 27 August 2026. No other catalogue keeps this.

17 Sep a tool changed version

15 Sep a tool changed version

14 Sep a tool changed version2 times that day

14 Sep a tool description was rewritten write_checkpoint

14 Sep a tool changed the parameters it asks for write_checkpoint

5 Sep a tool changed version

2 Sep 2 tools changed the parameters they ask for read_checkpoint, write_checkpoint

2 Sep a tool appeared create_checkpoint_session

2 Sep a tool description was rewritten read_checkpoint

2 Sep a tool changed version

and 5 more, back to 27 August 2026

Nothing serious here today

Today is the operative word: we check opchain every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add opchain-skills --transport http https://opchain.dev/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.opchain-skills]
url = "https://opchain.dev/mcp"

.cursor/mcp.json

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

.vscode/mcp.json

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

Available tools 7

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

checkpoint

create_checkpoint_session

Create a private server-issued session for checkpoint storage. Retain the returned sessionId and use it with read_checkpoint/write_checkpoint; never invent or share one.

read_checkpoint

Read a skill's saved session checkpoint (where you left off). sessionId must be a private token returned by create_checkpoint_session.

write_checkpoint

Persist a skill's session checkpoint so progress survives across sessions. Stores the object as given (any JSON object up to 64 KiB); it does not validate it against the opchain checkpoint protocol, so write the shape the protocol documents.

orchestrator

get_orchestrator

Return the shared orchestrator protocol (welcome flow, pipeline map, active-chaining rules). Read once at the start of a session.

route

route

Map a request or an /oc-* command to the skill that should handle it, with the entry phase. Use when you're unsure which skill fits.

skill

get_skill

Return the full SKILL.md (the instructions) for one skill id. Load it, then follow it. Read get_orchestrator once before your first get_skill in a session.

skills

list_skills

List every opchain skill (id, displayName, description, phases, commands). Call this first to see the concept→ship pipeline.

Endpoints

URL	Transport	State	Latency	Checked
https://opchain.dev/mcp	streamable-http	answering	203 ms	0 min ago

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opchain — questions

Answers built from our own checks of this server.

What can opchain do?

It exposes 7 tools, read directly from the server on our last check. Among them: create_checkpoint_session, get_orchestrator, get_skill, list_skills, read_checkpoint, route and 1 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is opchain working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 203 ms. The bar chart above shows every period we have measured.

How do I connect opchain?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does opchain need an API key?

No. opchain completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is opchain?

It answers our handshake in 203 ms on average, which is faster than 65% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is opchain open source?

Yes — it is published under the Apache-2.0 licence, written in JavaScript, 0 stars on GitHub and 12 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.