Green Helix (mirni/a2a) is an MCP server listed on the M8ven Trust Index. It scores 63 out of 100, grade C. It declares 7 tools. No publisher has claimed this listing.

C
Limited view
63/100

Green Helix

AI agent commerce platform — 141 tools for payments, escrow, identity, marketplace, and Z3 formal verification

Limited view. Automated analysis covers part of this stack. Findings reflect what we verified. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

Limited view: static analysis for Python is partially covered.

How we verified

Code Verified⚡ Live Monitored: not connected

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

⚡ Connect GitHub → continuous verification on every pushwhy connect →

Who stands behind it

mirni

Source: Glama

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 →

Install from

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.
🔐
You'll be asked for 11 credentials: A2A_API_KEY, STRIPE_API_KEY, STRIPE_WEBHOOK_SECRET, WEBHOOK_ENCRYPTION_KEY, GITHUB_TOKEN, PG_PASSWORD, VERIFIER_SHARED_SECRET, VERIFIER_SIGNING_KEY, VERIFIER_PUBLIC_KEY, AUDITOR_PRIVATE_KEY, AUDITOR_PUBLIC_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// 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.
🔐 secretA2A_API_KEY
configA2A_BASE_URL
configA2A_DATA_DIR
configHOSTThe gateway starts on http://localhost:8000 by default. Override with and PORT env vars.
configMETRICS_ALLOWED_IPS
configCORS_ALLOWED_ORIGINS
configA2A_MAX_BATCH_SIZE
configA2A_CREDITS_PER_DOLLAR
configA2A_MIN_CREDITS
configA2A_MAX_CREDITS
configA2A_WEBHOOK_MAX_ATTEMPTS
configA2A_WEBHOOK_TIMEOUT
configA2A_MCP_TIMEOUT
configA2A_HEALTH_INTERVAL
configA2A_SCHEDULER_INTERVAL
configX402_ENABLED
configX402_MERCHANT_ADDRESS
configX402_FACILITATOR_URL
configX402_SUPPORTED_NETWORKS
configPG_MIN_POOL
configPG_MAX_POOL
configPG_STMT_CACHE
configCREDENTIALS_DIRECTORY
configA2A_ENV
configVERIFIER_AUTH_MODE
🔐 secretSTRIPE_API_KEY
configA2A_INSTALL_DIR
configA2A_TRUSTED_PROXIES
configFORCE_HTTPS
configA2A_LEGACY_EXECUTE
🔐 secretSTRIPE_WEBHOOK_SECRET
configA2A_DOMAIN
🔐 secretWEBHOOK_ENCRYPTION_KEY
🔐 secretGITHUB_TOKEN
configPG_HOST
configPG_PORT
configPG_DATABASE
configPG_USER
🔐 secretPG_PASSWORD
configPG_SSL
configPG_READ_ONLY
configVERIFIER_LAMBDA_FUNCTION
configVERIFIER_LAMBDA_REGION
configVERIFIER_FUNCTION_URL
🔐 secretVERIFIER_SHARED_SECRET
configVERIFIER_LAMBDA_FALLBACK_REGION
🔐 secretVERIFIER_SIGNING_KEY
🔐 secretVERIFIER_PUBLIC_KEY
🔐 secretAUDITOR_PRIVATE_KEY
🔐 secretAUDITOR_PUBLIC_KEY
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployBILLING_DSN
deployPAYWALL_DSN
deployPAYMENTS_DSN
deployMARKETPLACE_DSN
deployTRUST_DSN
deployIDENTITY_DSN
deployEVENT_BUS_DSN
deployWEBHOOK_DSN
deployPORT
deployMESSAGING_DSN
deployGATEKEEPER_DSN
deployDISPUTE_DSN
// 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

7/7 tools missing one or more hints — create_customer (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); create_payment_intent (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_charges (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +4 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 inputs are validated

6/7 tool handlers declare input schemas (86%)

Declare an inputSchema with zod/joi/yup on every tool definition.

Tool handlers catch errors

6/7 tool handlers wrap calls in try/catch (86%)

Wrap each tool handler body in try/catch and return a structured error response.

License file

No license file

Add a LICENSE file (MIT, Apache-2.0, etc.).

Tool test coverage

Only 2/7 tools referenced in tests (29%)

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

Domain consistency

npm scope @greenhelix doesn't match GitHub owner mirni

Use the same org name across GitHub, npm, and your homepage so users can verify the publisher.

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 7 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/mirni/a2a)](https://m8ven.ai/mcp/mirni/a2a)
Shows your grade and updates automatically. Prefer no grade? Append ?variant=verified to the badge URL.
commit: ec0b30f5043ea1d8e2d32fd265ab6e54f443a1dd
code hash: b7338585d59d3e0f56130248144d8bbe1c0320a8fa1ccf619233c34667f48e8f
view raw JSON →
Check MCPs from inside your assistant
Tool Check · MCP

Vetting this one by hand? Tool Check is an MCP that scores other MCPs. Add it once and ask Claude, ChatGPT, or any MCP client to grade a server, surface CVEs, check the publisher, and suggest safer alternatives — before you install.

https://m8ven.ai/api/mcp/tool-check
check_toolsearch_toolscompare_toolsrecommend_alternativescheck_publisherreport_concern
How to add it →Free · no account needed · works in any MCP client