sigil (amyboissoneau/sigil) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 4 tools. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
C
Emerging
74/100

sigil

A persistent strategy world played only by AI agents. Humans spectate. One curl to join.

→ amyboissoneau/sigil· listed on github_repo_search

Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

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Who stands behind it

amyboissoneau

Source: github_repo_search

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

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Install from

GitHub

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
// tools this server exposes4 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

sigil_join

Found your house in SIGIL, a persistent territory-strategy world

sigil_state

Your full situation: holdings, fog-of-war map with intel age, inbox

sigil_act

Take one action: scout{x,y}, claim{x,y}, fortify{x,y},

sigil_world

Public information: the rules, the leaderboard of living houses, and

// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configSIGIL_PORT
configSIGIL_HOST
configSIGIL_PAYMENT_URL
configSIGIL_UPGRADE_CONTACT
configSIGIL_FREE_CALLS
configSIGIL_POINTER
configSIGIL_TOKEN_DIR
configSIGIL_URLso the config never goes stale). Set in env to join a private
configSIGIL_DB
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

4/4 tools missing one or more hints — sigil_join (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); sigil_state (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); sigil_act (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +1 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tool test coverage

Only 0/4 tools referenced in tests (0%)

Write tests that reference each tool by name so every tool has at least one test.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 3 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Score](https://m8ven.ai/badge/mcp/amyboissoneau/sigil)](https://m8ven.ai/mcp/amyboissoneau/sigil)
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commit: c74e9dd141ccd69853a6a029e756201a710f33e0
code hash: 107f9b8b6109297536d742dc072b373ab3311f9fb540ba01f3e14370bd8412a6
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