> ## Documentation Index
> Fetch the complete documentation index at: https://docs.devin.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# CognitionAcp.RulesInjectedMeta

> Metadata for a tool call — a rule file (e.g.

Metadata for a `rules_injected` tool call — a rule file (e.g. `AGENTS.md`)
was injected into the agent's context.

Discriminated by the required `rule_display_name` field: only
`rules_injected` events carry `cognition.ai/ruleDisplayName`. It is a
non-`Option` `String` with no `#[serde(default)]`, so serde's untagged enum
dispatch only picks this variant when the incoming `_meta` actually has
`cognition.ai/ruleDisplayName`. Mirrors the pattern used by
`ReportBlockerMeta` and `CognitionRecordingStoppedMeta`.

```typescript
type RulesInjectedMeta = void
```


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