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The signatures endpoints let you inspect the detection signatures that InferenceWall has loaded. Use them to verify that custom signatures are active, inspect signature metadata, or build tooling on top of the signature catalog. InferenceWall ships with 100 built-in signatures covering prompt injection, jailbreaks, content safety, data leakage, system prompt extraction, and agentic attacks. Custom signatures in ~/.inferwall/signatures/ are merged at startup and appear in the same list.

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GET /v1/signatures

List all loaded signatures. Returns an array of signature objects with their ID, name, category, severity, and other metadata.

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Example

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Response fields

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string
Unique signature identifier (e.g., INJ-D-002).
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string
Human-readable signature name.
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string
Detection category (e.g., injection, data-leakage, content-safety).
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number
Signature severity score, between 1 and 15. Used in anomaly score calculation.
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string
Confidence tier: low, medium, or high.
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string
Detection engine that handles this signature: heuristic, classifier, semantic, or llm-judge.
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string
Whether this signature applies to input (user prompts), output (LLM responses), or both.
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boolean
Whether this signature is currently active in the loaded policy.

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GET /v1/signatures/

Get full details for a specific signature by its ID.

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Path parameters

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string
required
The signature ID to look up (e.g., INJ-D-002).

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Example

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Use cases

  • Verify custom signatures are loaded — after adding a file to ~/.inferwall/signatures/, call GET /v1/signatures and check that your signature ID appears in the list.
  • Inspect signature details — retrieve the severity, confidence, and engine for any signature to understand how it contributes to scoring.
  • Build tooling — use the signature list to power dashboards, audit reports, or policy management interfaces.
After adding custom signatures, call POST /v1/admin/reload to hot-reload them without restarting the server, then verify with GET /v1/signatures.
For guidance on writing your own signatures, see Custom Signatures.