Verschlüsselter lokaler Tresor für KI-Agenten – via MCP-Protokoll
enigmagent-mcp ist der Model Context Protocol-Server für EnigmAgent. Er stellt Ihren mit AES-256-GCM + Argon2id verschlüsselten Anmeldedaten-Tresor als MCP-Tools bereit, sodass jeder MCP-kompatible KI-Agent (Claude Desktop, Cursor, Continue.dev, Open WebUI, AnythingLLM, LM Studio usw.) {{PLACEHOLDER}}-Geheimnisse zur Laufzeit auflösen kann.
Das LLM sieht niemals echte API-Schlüssel oder Anmeldedaten.
npx enigmagent-mcp --vault ./my.vault.jsonRelated MCP server: mcp-keyward
Speichern Sie Geheimnisse in einem verschlüsselten Tresor: { "OPENAI_KEY": "sk-..." }
Verwenden Sie {{OPENAI_KEY}} in Ihren Agenten-Prompts
EnigmAgent löst diese auf, bevor das LLM die Nachricht erhält
resolve_secret — löst einen {{PLACEHOLDER}} in seinen Tresorwert auf
list_keys — listet verfügbare Platzhalternamen auf (keine Werte)
vault_status — prüft den Sperrstatus des Tresors
AES-256-GCM symmetrische Verschlüsselung
Argon2id Schlüsselableitung (speicherintensiv, GPU-resistent)
Keine Cloud — der Tresor verlässt niemals Ihren Rechner
Keine Telemetrie — keine Analysen, keine Rückrufe
Browser-Erweiterung, npm-Bibliothek, Python-SDK und weitere Integrationen unter: https://github.com/Agnuxo1/EnigmAgent
MIT
List all secret names and their bound domains. Never returns actual secret values.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Despite no annotations, the description discloses a key behavioral trait: it never returns secret values, which informs the agent about safety and limits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Extremely concise with two sentences, front-loaded with the core purpose, and no superfluous text.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple list tool with no parameters and no output schema, the description covers the essential purpose and a critical behavioral constraint, though pagination or ordering details are absent.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
No parameters exist, so baseline 4 is appropriate as per instructions; no additional param info needed.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states it lists secret names and bound domains, and explicitly distinguishes from a value-returning tool by stating 'Never returns actual secret values.'
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No explicit guidance on when to use this tool versus the sibling 'enigmagent_resolve', but the description's emphasis on listing metadata implies usage context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Resolve a secret placeholder from the EnigmAgent vault. Returns the decrypted value. Domain binding is enforced: the origin must match the secret's bound domain.
| Name | Required | Description | Default |
|---|---|---|---|
| placeholder | Yes | The secret name to resolve. Supports {{NAME}}, {{LOGIN:domain}}, {{DOC:filename}} syntax (pass without the braces). | |
| origin | Yes | The requesting origin URL (e.g. https://api.example.com). Must match the secret's domain binding. |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description correctly notes returns decrypted value and domain enforcement, but lacks details on error conditions (e.g., mismatch) or side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, front-loaded with purpose, no wasted words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description mentions return value but omits error handling or detailed result format. Adequate for a simple tool but could be more complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description adds valuable context to both parameters: placeholder syntax variants and origin requirement, going beyond the schema descriptions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb 'Resolve' and the resource 'secret placeholder from the EnigmAgent vault', and distinguishes from sibling 'enigmagent_list' by specifying it returns the decrypted value.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explains the domain binding and placeholder syntax, but does not explicitly state when to use this tool versus alternatives or when not to use it.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
v0.1.0enigmagent_listenigmagent_resolveScored across 2 tools
The two tools have completely distinct purposes: one lists secret names and domains, the other resolves placeholder values. There is no ambiguity between them.
Both tools share a consistent 'enigmagent_' prefix followed by a verb ('list', 'resolve'), following a predictable verb_noun pattern.
With only 2 tools, the set is on the low end of what is reasonable. While each tool is distinct, the total number feels minimal for a secret management server.
The tool surface lacks basic CRUD operations like create, update, or delete secrets. Agents can only list and resolve, which is insufficient for comprehensive secret management.
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