MetaGO Agent Harness
NPM · @METAGO-AI/MCP-SERVER
Decision lock, anti-hallucination, meta-evolution and provenance for any MCP agent. 55 tools.
Available components
Last scanned (2 hours ago)
Scores higher than 81% of npm servers
Category Developer Tools
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 30 of 94 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency48
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 8 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability80
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 4570 tokens (~83/item across 55 items; 55 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "metago_decision_eval" implies "eval" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 55 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Nov 26 +6
- Source repository: unverified → pass ▲ security
- Stability: 0.97 → pass security
- 3 Nov 26 −6
- Provenance: pass → unverified ▼ security
- Stability: pass → 0.97 functional
- 28 Oct 26 +1
- Stability: 0.97 → pass security
- 25 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 23 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
- 21 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Analysed npm/@metago-ai/mcp-server@1.3.3
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 94 packages
| Packages resolved | 94 |
|---|---|
| Stale | 30 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
metago_self_check ~52
输出前自检，检测占位符/幻觉/不一致/不完整，作为最后一道质量防线。
| Name | Type | Req | Description |
|---|---|---|---|
| input | string | yes | 待处理的内容/问题/代码 |
No output schema declared.
No examples provided.
metago_value_29d_assess ~132
29维价值评估器。对方案/决策进行29维价值体系评估（D01国家战略~D29溯源深度）。每维输出0-1得分和加权分，计算综合价值指数，识别高贡献和低贡献维度并给出改进建议。
| Name | Type | Req | Description |
|---|---|---|---|
| custom_weights | object | – | 自定义29维权重 |
| proposal | string | yes | 待评估的方案或决策描述 |
| proposal_type | string | – | 方案类型，影响权重，默认通用 |
No output schema declared.
No examples provided.
metago_value_align ~46
确保 AI 行动与用户长期价值对齐，29 天价值评估。
| Name | Type | Req | Description |
|---|---|---|---|
| input | string | yes | 待处理的内容/问题/代码 |
No output schema declared.
No examples provided.
metago_value_assess ~49
对项目/组织/方案进行多维度价值量化分析，覆盖28个价值维度。
| Name | Type | Req | Description |
|---|---|---|---|
| input | string | yes | 待处理的内容/问题/代码 |
No output schema declared.
No examples provided.
metago_whatif ~107
反事实推演器。推演[如果...会怎样]的假设情景。识别关键变量，设定假设条件，推演不同结果，量化差异，给出最优建议。
| Name | Type | Req | Description |
|---|---|---|---|
| base_state | string | yes | 当前基准状态描述 |
| scenario | string | yes | 假设情景描述（如：如果改用技术方案B会怎样） |
| variables | array | – | 关键变量列表 |
No output schema declared.
No examples provided.
How do I install the MetaGO Agent Harness MCP server?
MetaGO Agent Harness runs locally as an npm package, launched with npx -y @metago-ai/mcp-server. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · @metago-ai/mcp-server
claude mcp add metago-ai-metago -- npx -y @metago-ai/mcp-server
What is the MetaGO Agent Harness MCP server?
MetaGO Agent Harness is an MCP server listed in the public MCP registry as io.github.metago-ai/metago. Decision lock, anti-hallucination, meta-evolution and provenance for any MCP agent. 55 tools. This page covers its npm package (@metago-ai/mcp-server).
Is the MetaGO Agent Harness MCP server safe to use?
MetaGO Agent Harness scores 84 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the MetaGO Agent Harness MCP server expose?
MetaGO Agent Harness exposes 55 tools: metago_action_plan, metago_whatif, metago_holistic_scan, metago_problem_trace, metago_one_shot_delivery, and 50 more. Their descriptions and schemas cost roughly 4,570 tokens of context every time the server is loaded.
Is the MetaGO Agent Harness MCP server still maintained?
MetaGO Agent Harness is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the MetaGO Agent Harness MCP server under?
MetaGO Agent Harness declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.