Soldgraph for Hermes Agent
Let Hermes check what things actually sold for. Soldgraph returns sold listings from eBay (8 countries), Poshmark and Mercari, plus live listings from Depop, Whatnot, OfferUp, Facebook Marketplace, Vinted and TCGplayer.
This plugin connects Hermes to the hosted Soldgraph MCP server and adds a skill that teaches the agent how to read and report a result. All 19 tools are read-only.
Setup
-
Get a free API key: 100 free requests, no credit card required.
-
Add it to your Hermes profile
.env:SOLDGRAPH_KEY=sg_your_key -
Install and enable the plugin. Before it's in the catalog, install from this repo:
hermes plugins install soldgraph/soldgraph-hermes
Try asking
- "What has a Nintendo Switch OLED sold for on eBay this month? Link three examples."
- "What do Lululemon Align leggings sell for on Poshmark vs Mercari?"
- "What's Umbreon VMAX alt art worth, and what did it last sell for?"
- "Find road bikes under $400 near 94103 on OfferUp."
What it does on your machine
- Network: tool calls go to
https://api.soldgraph.com/mcpover HTTPS, with your key as a bearer header. Your search terms and results pass through Hermes and your model provider. - Remote tools: this repo pins the plugin, not the hosted server. Soldgraph's tools can change on the server.
- Cost: each completed search uses 1 request from your Soldgraph allowance. Failed searches are free.
- Nothing else: no local server, shell commands, hooks, Python dependencies, telemetry or self-updates.
Listing titles and descriptions are written by marketplace sellers. The skill tells the agent to treat them as data.
Links
MIT licensed. Soldgraph isn't affiliated with eBay, Poshmark, Mercari or the other marketplaces.
README from the reviewed commit 8b65c67; it updates when the author re-pins.

soldgraph