x402-discovery (rplryan/ouroboros) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 17 tools. No publisher has claimed this listing.
Discovers and queries x402-payable APIs at runtime — enables autonomous agents to find, evaluate, and pay for services via USDC micropayments on Base without API keys or subscriptions.
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
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
rplryan
Source: Glama
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.
WALLET_ADDRESSNETWORKQUERY_PRICE_USDC_UNITSHEALTH_CHECK_PRICE_USDC_UNITSX402_DEV_MODEOUROBOROS_MODEL_LIGHTModel for lightweight tasks (dedup, compaction)OUROBOROS_REPO_DIRGITHUB_TOKEN[github.com/settings/tokens](https://github.com/settings/tokens) -- Generate a classic token with repo scopeGITHUB_USERGitHub usernameGITHUB_REPOGitHub repository nameGITHUB_BRANCHOUROBOROS_PRE_PUSH_TESTSDRIVE_ROOTOPENROUTER_API_KEY[openrouter.ai/keys](https://openrouter.ai/keys) -- Create an account, add credits, generate a keyOPENAI_API_KEY[platform.openai.com/api-keys](https://platform.openai.com/api-keys) -- Enables web search toolOUROBOROS_WEBSEARCH_MODELModel for web search (OpenAI Responses API)OUROBOROS_CLAUDE_CODE_PERMISSION_MODEANTHROPIC_API_KEY[console.anthropic.com/settings/keys](https://console.anthropic.com/settings/keys) -- Enables Claude Code CLIOUROBOROS_MODELPrimary LLM model (via OpenRouter)OUROBOROS_BOOT_BRANCHOUROBOROS_WORKER_START_METHODOUROBOROS_DIAG_HEARTBEAT_SECOUROBOROS_MODEL_CODEModel for code editing tasksOUROBOROS_DIAG_SLOW_CYCLE_SECTELEGRAM_BOT_TOKEN4. You will use this token as in the next step.TOTAL_BUDGETYour spending limit in USD (e.g. 50)OUROBOROS_BG_BUDGET_PCTPercentage of total budget allocated to background consciousnessOUROBOROS_MAX_ROUNDSMaximum LLM rounds per taskPORTTool 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
17/17 tools missing one or more hints — x402_discover (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); x402_browse (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); x402_health (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +14 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 0/17 tools referenced in tests (0%)
Write tests that reference each tool by name so every tool has at least one test.
Secrets never reach shell commands
2 secret values passed to a subprocess as an argument — no shell is invoked, so there is nothing to inject into
Never pass secrets through shell commands. Use library APIs that accept credentials as arguments.
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.
[](https://m8ven.ai/mcp/rplryan/ouroboros)?variant=verified to the badge URL.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