HumanMirror Nexus MCP

An outcome-first agent fallback server that provides free discovery, minimal routing, declared costs, and verified execution. It allows AI agents to post outcomes, receive ranked live capabilities or capability gaps, and execute tasks with deterministic proofs and explicit verification before payment.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Vendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-06Operated by HumanMirror

MCP endpoint (Streamable HTTP)

https://humanmirror.fr/api/nexus/mcp/

Vendor documentation

What its tools do

6 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Not annotated (6)

outcome_quote
outcome_run
outcome_verify
nexus_search
magnet_resolve
nexus_call

6 of 6 have a description · 0 of 6 declare behavior hints · 4 of 6 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

Passed Endpoint answered the live check · Nov 6, 2026, 11:43 PM UTC
Passed Official MCP Registry namespace is tied to humanmirror.fr · Nov 6, 2026, 11:15 PM UTC
Passed Endpoint is on the registry namespace domain · Nov 6, 2026, 11:15 PM UTC
Availability 1 of 1 checks passed in 30 days

What you can do with it

Post an outcome to receive a ranked live capability or registered capability gap
Execute tasks with deterministic proofs and explicit verification
Use free discovery to identify correct capabilities when current tools fail
Access bounded pre-execution checks and evidence after completion

Source and maintenance

Vendor evidenceRegistry 1.3.4

mcp-registry: fr.humanmirror/nexus@1.3.4 Source repository Project website

Maintenance checked: Nov 6, 2026, 11:15 PM UTC

Protocol and capabilities

Server: humanmirror-nexus 1.3.0
MCP protocol negotiated in check: 2025-06-18
Tools: 6 advertised
Resources: Not advertised
Resource templates: Not advertised
Prompts: Not advertised

Server-advertised capabilities

{
  "tools": {
    "listChanged": false
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Use outcome_quote when the task can be expressed as a measurable result. Use outcome_run to pay only for verified success and outcome_verify for free re-verification. Use nexus_search for direct tool discovery, magnet_resolve as a free fallback when current capabilities cannot satisfy a task, and nexus_call for direct metered execution.

Tools

6 advertised

outcome_quote

Advertised by the server during the last successful anonymous check.

Free quote for a verifiable HumanMirror Outcome contract. Describe the objective or provide an outcome_type; the quote returns the deterministic verifier, selected internal tool and success-only credit cost.

outcome_quote input schema

{
  "type": "object",
  "required": [
    "input"
  ],
  "properties": {
    "input": {
      "description": "JSON input for the requested outcome."
    },
    "options": {
      "type": "object",
      "description": "Optional operation-specific options."
    },
    "criteria": {
      "type": "object",
      "description": "Optional measurable success threshold."
    },
    "objective": {
      "type": "string",
      "description": "Natural-language objective, for example: clean this JSON and make the result stable."
    },
    "outcome_type": {
      "type": "string",
      "description": "Optional explicit outcome type returned by a previous quote."
    }
  },
  "additionalProperties": false
}

outcome_run

Advertised by the server during the last successful anonymous check.

Execute a HumanMirror Outcome contract. Credits are charged only when deterministic verification succeeds; failed execution or failed verification is automatically refunded.

outcome_run input schema

{
  "type": "object",
  "required": [
    "input"
  ],
  "properties": {
    "input": {
      "description": "JSON input for the requested outcome."
    },
    "options": {
      "type": "object"
    },
    "criteria": {
      "type": "object"
    },
    "objective": {
      "type": "string"
    },
    "contract_id": {
      "type": "string",
      "description": "Optional contract_id returned by outcome_quote. If supplied it must match the current input, criteria and options."
    },
    "outcome_type": {
      "type": "string"
    }
  },
  "additionalProperties": false
}

outcome_verify

Advertised by the server during the last successful anonymous check.

Free deterministic re-verification of an Outcome result without consuming Nexus credits.

outcome_verify input schema

{
  "type": "object",
  "required": [
    "outcome_type",
    "input",
    "output"
  ],
  "properties": {
    "input": {
      "description": "Original input."
    },
    "output": {
      "description": "Outcome output to verify."
    },
    "options": {
      "type": "object"
    },
    "criteria": {
      "type": "object"
    },
    "outcome_type": {
      "type": "string"
    }
  },
  "additionalProperties": false
}

nexus_search

Advertised by the server during the last successful anonymous check.

Search the HumanMirror Nexus catalog for a machine-callable tool that matches a task. This search is free and does not consume credits.

nexus_search input schema

{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string",
      "description": "Describe the operation the agent needs."
    }
  },
  "additionalProperties": false
}

magnet_resolve

Advertised by the server during the last successful anonymous check.

Free universal fallback discovery. Call this when the agent cannot satisfy a task with its current capabilities. Magnet returns a matching HumanMirror tool or records an aggregated capability gap in the Machine Demand Graph. This tool consumes no credits.

magnet_resolve input schema

{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string",
      "description": "Describe the missing capability or task the agent needs to complete."
    }
  },
  "additionalProperties": false
}

nexus_call

Advertised by the server during the last successful anonymous check.

Route a tool call through HumanMirror Nexus. Use nexus_search first, then call the selected tool_id. Successful calls consume the number of Nexus credits declared by the selected tool.

nexus_call input schema

{
  "type": "object",
  "required": [
    "tool_id",
    "input"
  ],
  "properties": {
    "input": {
      "description": "JSON input forwarded to the selected tool."
    },
    "options": {
      "type": "object",
      "description": "Optional tool-specific options."
    },
    "tool_id": {
      "type": "string",
      "description": "A tool_id returned by nexus_search, for example forge.clean_json."
    }
  },
  "additionalProperties": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 518 ms
95th percentile latency: 518 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 6, 2026, 11:43 PM UTC · probe · passed · 518 ms · metadata changed · 6 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http humanmirror-nexus-mcp https://humanmirror.fr/api/nexus/mcp/

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add humanmirror-nexus-mcp --url https://humanmirror.fr/api/nexus/mcp/

Cursor

Merge this server into .cursor/mcp.json in your project, then enable humanmirror-nexus-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "humanmirror-nexus-mcp": {
      "url": "https://humanmirror.fr/api/nexus/mcp/"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "humanmirror-nexus-mcp": {
      "type": "streamableHttp",
      "url": "https://humanmirror.fr/api/nexus/mcp/",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start humanmirror-nexus-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "humanmirror-nexus-mcp": {
      "type": "http",
      "url": "https://humanmirror.fr/api/nexus/mcp/"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http humanmirror-nexus-mcp https://humanmirror.fr/api/nexus/mcp/

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.

Claude Desktop configuration

https://humanmirror.fr/api/nexus/mcp/

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "humanmirror-nexus-mcp": {
      "serverUrl": "https://humanmirror.fr/api/nexus/mcp/"
    }
  }
}

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