Polygraph

Open behavioral litmus for MCP servers — grades A–F across tool-output injection, egress, sensitive-data, and adversarial-input, with reproducible, content-addressed evidence. Tools: run_litmus, verify_attestation.

→ polygraphso/litmus · listed on glama

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// key findings

✅

17 tools verified — handlers match their declared behaviour

5 read-only tools verified — handlers contain no write/delete/exec

✅

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.

🔐

You'll be asked for 1 credential: OPENAI_API_KEY

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configBASE_MAINNET_RPC_URL

configBASE_SEPOLIA_RPC_URL

configDATABASE_URL

configLITMUS_DEBUG

configLITMUS_DOCKER_BUILD_PULL

configLITMUS_DOCKER_RUNTIME

configLITMUS_DOCKER_TESTS

configLITMUS_EGRESS_ALLOWLIST

configLITMUS_EGRESS_GATEWAY

configLITMUS_STDIO_ISOLATION

configNEXT_PUBLIC_EAS_SCHEMA_UID

configNEXT_PUBLIC_EAS_SKILL_SCHEMA_UID

configNEXT_PUBLIC_POLYGRAPH_NETWORK

🔐 secretOPENAI_API_KEY

configPOLYGRAPH_ALLOW_PRIVATE_TARGETS

configPOLYGRAPH_API_URL

configSINK_IP

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 6 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/polygraphso-litmus-bobgkz)](https://m8ven.ai/mcp/polygraphso-litmus-bobgkz)

commit: f562b34b24b6e6dcc624374dd902d541dc684f9e

code hash: 064fd0aefed356ea0c90ffdab679d850afe6cdb8af2621aaf9d3a8f73e6630d0

verified: 6/20/2026, 9:08:47 AM

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