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a4sx sessions MCP Server

by session-exchange Your server? Claim it
answering

a4sx sessions is answering right now. Last checked 6 min ago. 196 installs a week from pypi. It exposes 7 tools. Last commit 29 Oct 2026.

Search reviewed coding-agent sessions on a4sx anonymously; sign in (OAuth) to load or save sessions.

Installs per day peak 444 · avg 37 · -3% w/w
a month agotoday
Uptime history 25 days of history · worst day 96%
25 days agonow
100.0%
Uptime 24h
91 of 91 checks
7
Tools
read from the server
128 ms
Response time
average over 24h
196
Installs / week
npm and PyPI

What changed 71

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 10 October 2026. No other catalogue keeps this.

2 Nov a tool changed version4 times that day
1 Nov a tool changed version
31 Oct a tool changed version3 times that day
29 Oct a tool changed version
28 Oct a tool changed version4 times that day
27 Oct a tool changed version2 times that day
26 Oct a tool changed version
25 Oct a tool changed version2 times that day
24 Oct a tool changed version
23 Oct a tool changed version
and 61 more, back to 10 October 2026

What the code does

We read the source, 6 h ago · tools taken from the live server · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Builds a file path from a variable vscode/src/cli.ts:78 
      const candidate = path.join(dir, name + ext);
Runs an external command vscode/src/extension.ts:650 
    execFile(spec.file, spec.args, {

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

run in your terminal
claude mcp add sessions --transport http https://session-exchange.com/mcp
Settings → Connectors → Add custom connector, then paste this address
https://session-exchange.com/mcp
~/.codex/config.toml
[mcp_servers.sessions]
url = "https://session-exchange.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "sessions": {
      "url": "https://session-exchange.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "sessions": {
      "type": "http",
      "url": "https://session-exchange.com/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.

session
fetch_session_context
Load a session from your library (saved, or added with acquire_session) as starting context for this conversation, sized to max_tokens.
get_session_summary
Describe one session before using it: what it did, outline, price, and whether you already have access. source=marketplace (default) or library.
acquire
acquire_session
Add a marketplace session you are entitled to (free, bought, or granted) to your private library. Never buys anything: for a paid listing it returns status=payment_required with the price and the listing URL.
publish
publish_session
Save a session transcript (JSONL), or markdown you composed (format=markdown), to your private a4sx library. The server only rewrites text that matches secret and personal-data patterns (such as tokens, private keys, emails, IP addresses and home-directory user names). It removes no record or field: a raw Claude Code transcript keeps the user's CLAUDE.md and session context (attachment records), file-history snapshot records (absolute file paths), other non-conversation records (such as pr-link), tool-output copies (toolUseResult), and cwd, gitBranch and version on every line; the reply counts them (except version) in unprepared_carriers. Prepare the transcript or compose markdown first, as GET /orient on this server without auth describes (route A, or route B steps 0-8). Private: it is never listed publicly by this tool.
purchase
get_purchase_request
Status of a purchase you requested: pending, completed (with acquired_copy_id to load with fetch_session_context), declined or expired.
request
request_purchase
Start buying a paid marketplace listing for the account holder to confirm. Nothing is charged and you never pay: it returns a verify_url and a user_code to give to the account holder, who checks the code, confirms and pays. Then poll get_purchase_request.
sessions
search_sessions
Search vetted, published coding-agent sessions on a4sx (reviewed marketplace listings), or your own saved sessions with scope=library. Returns ids to use with the other tools.

Tools removed

Tools this server used to expose. Anything built against them stopped working on the day they went.

ask_operator
removed 22 Oct 2026
get_operator_reports
removed 22 Oct 2026
get_operator_status
removed 22 Oct 2026
get_operator_ticket
removed 22 Oct 2026
get_world_sim_access
removed 22 Oct 2026
list_my_modules
removed 22 Oct 2026
list_operators
removed 22 Oct 2026
list_operator_tickets
removed 22 Oct 2026
list_pending_decisions
removed 22 Oct 2026
list_world_sim_templates
removed 22 Oct 2026
request_operator_change
removed 22 Oct 2026

Endpoints

URLTransportStateLatencyChecked
https://session-exchange.com/mcp streamable-http answering 112 ms 6 min ago

Alternatives to a4sx sessions

same job, measured the same way
Lostinnotes
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Read-only MCP server: a coding agent reads test sessions recorded in QA Wrap. Local only.

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Turns an agent coding session into a short recap video. Local-first.

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Turns an AI coding agent session into a reviewable Intent Document, validated against the diff.

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Vibeshare Live
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Share a live agent coding session by URL. Spectate or invite in.

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Auto Skill Loader
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Auto-loads skills into agent sessions. MiniMax vision and search proxy.

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Emulo
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Mine your AI coding session logs into a you.md profile with dated receipts, for an agent to read.

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a4sx sessions — questions

Answers built from our own checks of this server.

What can a4sx sessions do?
It exposes 7 tools, read directly from the server on our last check. Among them: acquire_session, fetch_session_context, get_purchase_request, get_session_summary, publish_session, request_purchase 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 a4sx sessions working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 128 ms. The bar chart above shows every period we have measured.
Did a4sx sessions ever remove tools?
Yes. ask_operator, get_operator_reports, get_operator_status, get_operator_ticket and 7 more are no longer exposed — we recorded the date each one disappeared. A tool vanishing usually means a breaking change for anything that depended on it.
How do I connect a4sx sessions?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does a4sx sessions need an API key?
No. a4sx sessions 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 a4sx sessions?
It answers our handshake in 128 ms on average, which is faster than 86% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use a4sx sessions?
The pypi package a4sx-mcp was installed 196 times in the last week. Week over week that is -3%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is a4sx sessions open source?
The code is open source: it is published under the Apache-2.0 licence, written in TypeScript and 0 stars on GitHub. The licence covers the code in the repository, not the hosted service at session-exchange.com, which runs on its operator's own terms.