Schema | Myelin

Myelin

Describes the environment variables required to run the server.

Name	Required	Description
`MYELIN_DATA_DIR`	No	Directory where all data lives. Default: ~/.myelin
`MYELIN_LATERAL_K`	No	Max results per session/scope (0 = off). Default: 1
`MYELIN_LOG_LEVEL`	No	Logging verbosity (structured JSON to stderr). Default: INFO
`MYELIN_MULTIPROBE`	No	3-probe retrieval (original + keywords + entity-expanded). Default: true
`MYELIN_MAX_MEMORIES`	No	Hard memory cap; 0 = unlimited. LRU eviction when exceeded. Default: 0
`MYELIN_CHUNK_MAX_CHARS`	No	Max characters per chunk. Default: 1000
`MYELIN_EMBEDDING_MODEL`	No	Bi-encoder model. Default: all-MiniLM-L6-v2
`MYELIN_NECORTEX_RERANK`	No	Cross-encoder re-ranking. Default: true
`MYELIN_NECORTEX_WEIGHT`	No	CE/bi-encoder blend (0.0–1.0). Default: 0.6
`MYELIN_DEFAULT_N_RESULTS`	No	Results returned per recall. Default: 5
`MYELIN_MIN_CONTENT_LENGTH`	No	Minimum chars to pass the input gate. Default: 20
`MYELIN_RECALL_OVER_FACTOR`	No	Over-retrieval multiplier for re-ranking headroom. Default: 8
`MYELIN_CHUNK_OVERLAP_CHARS`	No	Overlap between text chunks. Default: 200
`MYELIN_CROSS_ENCODER_MODEL`	No	Cross-encoder model. Default: ms-marco-MiniLM-L-6-v2
`MYELIN_CONSOLIDATION_INTERVAL`	No	Auto-consolidate every N stores (0 = disabled). Default: 50
`MYELIN_DEDUP_SIMILARITY_THRESHOLD`	No	Above this = near-duplicate, rejected. Default: 0.95

Server capabilities have not been inspected yet.

Functions exposed to the LLM to take actions

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Contextual data attached and managed by the client

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