osmp 2.0.4

OSMP -- Octid Semantic Mesh Protocol. Deterministic agentic instruction encoding.

OSMP Python SDK

Reference implementation of the Octid Semantic Mesh Protocol. Encodes, decodes, and validates agentic AI instructions using SAL (Semantic Assembly Language). 342 opcodes across 26 namespaces. Inference-free decode by table lookup.

Install

pip install osmp

Zero dependencies beyond Python standard library (optional zstandard for D:PACK).

Tier 1: Two Functions, Zero Setup

from osmp import encode, decode

sal = encode(["H:HR@NODE1>120", "H:CASREP", "M:EVA@*"])
# "H:HR@NODE1>120;H:CASREP;M:EVA@*"

text = decode("H:HR@NODE1>120;H:CASREP;M:EVA@*")
# "heart_rate at NODE1 priority 120; casualty_report; evacuation at broadcast"

Three lines. No instantiation. Module-level singleton, cached on first call.

Additional Tier 1 Functions

from osmp import validate, lookup, byte_size

result = validate("R:MOV@BOT1⚠")
print(result.valid)    # False -- ⚠ requires I:§ precondition

definition = lookup("R:WPT")
# "waypoint"

print(byte_size("H:HR@NODE1>120"))
# 15

Tier 2: Class-Based Interface

For configuration beyond defaults (custom ASD floor, pre-loaded dependency rules, direct ASD access):

from osmp.core import OSMP

o = OSMP()
sal = o.encode(["H:HR@NODE1>120", "H:CASREP"])
text = o.decode(sal)
result = o.validate(sal)
definition = o.lookup("H", "HR")

Tier 3: Full Protocol Access

Direct access to encoder, decoder, ASD, and all protocol internals:

from osmp.protocol import SALEncoder, SALDecoder, AdaptiveSharedDictionary, validate_composition

asd = AdaptiveSharedDictionary()
enc = SALEncoder(asd)
dec = SALDecoder(asd)

sal = enc.encode_frame("R", "MOV", target="BOT1", cc="↺")
result = dec.decode_frame(sal)
# result.namespace = "R"
# result.opcode = "MOV"
# result.opcode_meaning = "move"
# result.consequence_class_name = "REVERSIBLE"

Composition Validation

Eight deterministic rules enforced before any instruction hits the wire:

1. Hallucination check -- every opcode must exist in the ASD
2. Namespace-as-target -- @ must not be followed by NS:OPCODE
3. R namespace consequence class -- mandatory except R:ESTOP
4. I:§ precondition -- ⚠ and ⊘ require I:§ in the chain
5. Byte check -- SAL bytes must not exceed NL bytes (exception: R safety chains)
6. Slash rejection -- / is not a SAL operator
7. Mixed-mode check -- no natural language embedded in SAL frames
8. Regulatory dependency -- REQUIRES rules from loaded MDR corpora

Domain Code Resolution

from osmp.protocol import BlockCompressor

bc = BlockCompressor()
bc.load("mdr/icd10cm/MDR-ICD10CM-FY2026-blk.dpack")
result = bc.resolve("J93.0")
# "Spontaneous tension pneumothorax"

Three corpora bundled: ICD-10-CM (74,719 codes), ISO 20022 (47,835 codes), MITRE ATT&CK (1,661 codes).

MCP Server

The MCP server is a separate package that wraps this SDK:

pip install osmp-mcp
osmp-mcp

Nine tools for AI client integration. Connect from Claude Code (claude mcp add osmp -- osmp-mcp), Claude Desktop, Cursor, or any MCP-compatible client.

License

Apache 2.0. Patent pending. Filed March 17, 2026.

SALBridge: Mixed Environment Integration

When your agents communicate with non-OSMP peers, the bridge handles boundary translation.

from osmp import bridge

b = bridge("MY_NODE")
b.register_peer("GPT_AGENT", attempt_fnp=False)

# Outbound: SAL decoded to NL, annotated with SAL equivalent
out = b.send("H:HR@NODE1>120", "GPT_AGENT")

# Inbound: scanned for SAL acquisition
result = b.receive("A:ACK", "GPT_AGENT")

# Metrics and comparison
metrics = b.get_metrics("GPT_AGENT")
comparison = b.get_comparison("GPT_AGENT")

The bridge annotates outbound messages with SAL, seeding the remote agent's context. When the remote agent starts producing valid SAL through exposure, FNP transitions from FALLBACK to ACQUIRED. OSMP spreads by contact, not installation.