← Index

io.github.krystiangw/zen

io.github.krystiangw/zenv0.1.0Finance & Payments

Unofficial MCP server for the ZEN.com Payment Gateway: payment links, transactions, refunds.

In-path gate · all MCP tools

Using io.github.krystiangw/zen in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire
Auditable install path →Watch it hold a drift →
Trust verdict · v1 advisory · method
NOT YET SCREENEDno verdict on file

Verdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-08-16).

Contracts can change after screening, with no version bump. The gate pins io.github.krystiangw/zen’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Related: how to trust an MCP server · screen before install · silent contract drift

Environment variables
ZEN_API_KEY
requiredsecret

ZEN Terminal API Key (Authorization header)

ZEN_PAYWALL_SECRET
secret

ZEN paywall secret for request signing (required for write ops)

ZEN_IPN_SECRET
secret

ZEN IPN secret for webhook verification

ZEN_ENV

sandbox (default) or production

MCP quality score · maturity, not trust · methodology
freshness
25
completeness
15
installability
25
documentation
15
stability
5
Alternatives in Finance & Payments
Diavgis — Greek Public Procurement
gr.diavgis/procurement

Search Greek public procurement: tenders, awards, contracts, payments, buyers and suppliers.

three.ws 3D Studio (free)
io.github.nirholas/threews-3d-studio-free

Free text/image → 3D: generate, rig, avatar-ify, and refine GLB models. No auth, no payment.

io.github.kwizzlesurp10-ctrl/x402-mcp
io.github.kwizzlesurp10-ctrl/x402-mcp

Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.