Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/shailesh17/mcp-httpserver-proxy/mock-sse-servernpx skills add shailesh17/mcp-httpserver-proxy --skill mock-sse-servergit clone --depth 1 https://github.com/shailesh17/mcp-httpserver-proxyWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00029 | $0.00200 |
| Opus 5 | $0.00015 | $0.00100 |
| Sonnet 5 | $0.00006 | $0.00040 |
| Haiku 4.5 | $0.00003 | $0.00020 |
Grade A, and why
mock-sse-server scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Mock SSE MCP Server
Use this skill when you want to verify that mcp-httpserver-proxy connects properly to an HTTP/SSE MCP endpoint and forwards messages.
Quick Start
-
Start the mock SSE server:
node .agents/skills/mock-sse-server/scripts/mock-server.jsThis will listen on
http://127.0.0.1:8123/sse. -
In another terminal, test the proxy against the mock server:
node dist/index.js http://127.0.0.1:8123/sse -
The proxy should output
Proxy running. Connected to http://127.0.0.1:8123/sseon stderr.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 28 lines · 29 tokens per session scan A 4eb76000916a
mock-sse-server is a skill published in the GitHub repository shailesh17/mcp-httpserver-proxy (2 stars, last pushed 9d ago), licensed MIT. It adds 29 tokens to every session and 200 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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