africa-coord-bus

The coordination layer between East Africa's AI tools.

31 MCP servers exist for Kenya's coordination domains — payments, water, agriculture, health, land, education. They work in isolation. When wapimaji-mcp detects a drought six weeks in advance, bima-mcp doesn't know to evaluate parametric insurance payouts. afya-mcp doesn't know to activate malnutrition surveillance. kilimo-mcp doesn't know to issue drought-resistant crop advisories.

This package provides the event bus that connects them.

The coordination gap

A smallholder farmer in Turkana has parametric crop insurance. NDVI anomaly data shows drought coming 6 weeks out. The insurance contract says coverage triggers when SPI drops below -1.5.

Without coordination: the farmer finds out the crop is failing at harvest. The insurance company finds out at claims submission. The health system finds out at clinic presentation.

With coordination:

wapimaji-mcp → CoordinationEvent(drought_alert, ALERT)
    │
    ├── bima-mcp.evaluate_parametric_payout      (triggered immediately)
    ├── kilimo-mcp.issue_drought_advisory         (farmers receive SMS)
    ├── afya-mcp.activate_malnutrition_watch      (CHWs briefed)
    └── county-mcp.alert_county_health            (county notified)

Six weeks earlier. Before the damage is visible.

AI Agent Compatibility

Model-agnostic. Tested with:

Model	Notes
claude-sonnet-5	Recommended — completes drought→insurance→county cascades end-to-end
claude-opus-4-8	Highest accuracy for complex multi-domain triage
gemini-flash	High-volume, cost-sensitive routing

Sonnet 5 (2026-06-30) is the first Sonnet-class model that reliably finishes the full multi-server cascade without stopping mid-chain.

Architecture: Shared Context Store (CA-MCP)

Research validation: Enhancing MCP with Context-Aware Server Collaboration (arXiv:2601.11595, January 2026) — introduces CA-MCP, adding a Shared Context Store (SCS) to stateless MCP. Results:

• Statistically significant reduction in LLM calls for complex multi-server tasks
• Decreased response failures when task conditions are not immediately satisfied
• Validated on TravelPlanner and REALM-Bench benchmarks

africa-coord-bus implements a compatible event-driven shared context pattern: the coordination bus acts as the SCS for cross-domain cascades. A drought event from wapimaji-mcp propagates context (severity, county, affected area) to bima-mcp, kilimo-mcp, and county-mcp without each server re-establishing that context independently.

The disconnected models problem (Krishnan, arXiv:2504.21030): stateless MCP servers lack global context — making coordination buses like this one structurally necessary, not optional, for multi-domain agents in East Africa.

Install

pip install africa-coord-bus

Usage

from africa_coord_bus import (
    EventBus, CoordinationEvent, DomainCascade,
    EventDomain, EventSeverity, KenyaLocation
)

# Create bus with offline queue
bus = EventBus(queue_path="/var/coord-bus/queue.jsonl")

# Wire all domain cascade handlers
cascade = DomainCascade(bus)
cascade.wire_all()

# Publish a drought signal from wapimaji-mcp
event = CoordinationEvent(
    domain=EventDomain.WATER,
    event_type="drought_alert",
    source="wapimaji-mcp",
    severity=EventSeverity.ALERT,
    location=KenyaLocation(county="Turkana", county_code=23),
    data={
        "ndvi_anomaly": -0.28,
        "spi_3month": -1.8,
        "rainfall_deficit_pct": 42,
    },
)

targets = bus.publish(event)
# → [WATER→FINANCE] bima-mcp.evaluate_parametric_payout | Turkana | drought_alert | alert
# → [WATER→AGRI]    kilimo-mcp.issue_drought_advisory    | Turkana | drought_alert | alert
# → [WATER→HEALTH]  afya-mcp.activate_malnutrition_watch | Turkana | drought_alert | alert

Built-in routing rules

Trigger	Cascade
water.drought_alert (WARNING+)	bima-mcp.evaluate_parametric_payout, kilimo-mcp.issue_drought_advisory, soko-mcp.price_alert
water.drought_alert (ALERT+)	+ afya-mcp.activate_malnutrition_watch, county-mcp.alert_county_health
health.disease_outbreak (cholera/typhoid)	wapimaji-mcp.flag_water_risk
health.disease_outbreak (WARNING+)	county-mcp.health_alert, fomu-mcp.emergency_procurement
agriculture.price_spike (>30% above seasonal)	afya-mcp.food_security_watch, bima-mcp.food_security_eval
water.flood_alert (WARNING+)	afya-mcp.waterborne_watch, county-mcp.flood_response

Add custom rules:

from africa_coord_bus import RoutingRule, EventDomain, EventSeverity

bus.routing.add(RoutingRule(
    name="outbreak→emergency_procurement",
    description="Disease outbreak triggers essential medicine procurement",
    trigger_domain=EventDomain.HEALTH,
    trigger_event_type="disease_outbreak",
    trigger_min_severity=EventSeverity.ALERT,
    target_actions=["fomu-mcp.emergency_medicine_order"],
))

Offline-first

Events are written to a local queue before dispatch. If dispatch fails, events persist for replay:

bus = EventBus(queue_path="/var/coord-bus/events.jsonl")
# ... system restart ...
bus.replay_queue()  # processes all unhandled events

Related packages

All available at pypi.org/user/gmahia:

• wapimaji-mcp — drought intelligence (publishes water.drought_alert)
• bima-mcp — parametric insurance (consumes drought events)
• kilimo-mcp — agricultural coordination (consumes drought + price events)
• afya-mcp — health coordination (consumes drought + flood + disease events)
• mpesa-mcp — M-Pesa payments (handles insurance payouts)

Integration with wapimaji-mcp

wapimaji-mcp v0.1.3+ includes built-in coordination publishing. When drought phase ≥ 2 (Stressed), it automatically fires coordination events:

# wapimaji-mcp now exposes this MCP tool:
result = call_mcp_tool("publish_drought_coordination", {
    "county": "Turkana",
    "phase": 3,
    "rainfall_deficit_pct": 42.0
})
# → fires 5 downstream actions automatically via africa-coord-bus

See examples/wapimaji_drought_cascade.py for the complete integration.

IP & Collaboration

MIT licensed. Feedback via GitHub Issues only — pull requests are not accepted. Demo data is labeled DEMO and is not suitable for operational decisions. Full policy: docs/architecture/IP_POLICY.md. Security reports: see SECURITY.md.

Part of the East Africa coordination stack

• Install & run: pip install reli-cli && reli list — 33 MCP servers on the official MCP Registry under io.github.gabrielmahia
• Evaluate any model on Swahili agent tasks: kipimo · dataset · leaderboard
• Coordinate across servers: africa-coord-bus — offline-first event bus with a built-in Kenya routing table
• Datasets: huggingface.co/gmahia · Docs hub: nairobi-stack

Model-agnostic by design: closed APIs, open-weight models, and small distilled models are all first-class citizens.

Interoperability: CAP 1.2 export

Events can be emitted as OASIS Common Alerting Protocol (CAP) 1.2 so a county, ministry, or warning network can consume them with existing tools — no need to adopt this bus:

from africa_coord_bus import CoordinationEvent, to_cap_xml
xml = to_cap_xml(event)   # valid CAP 1.2; also to_cap_dict(event)

Trust integrity is preserved: a DEMO/synthetic event is emitted as status=Exercise, never Actual, so a test signal cannot be mistaken for a live public alert.

Offline sync: conflict-free queue merge (CRDT)

Events are immutable and uuid-keyed, so two offline queues reconcile by union — a grow-only set (G-Set), the simplest CRDT. merge_queues is idempotent, commutative, and associative, so devices sync in any order and replay is safe:

from africa_coord_bus import merge_queues, write_queue
merged = merge_queues("device_a/queue.jsonl", "device_b/queue.jsonl")  # deduped by event_id
write_queue(merged, "synced/queue.jsonl")

Humanitarian interop: HXL + IPC hint

from africa_coord_bus import to_hxl_row, ipc_severity_hint
to_hxl_row(event)          # HXL-tagged row for HDX / HXL Proxy tooling
ipc_severity_hint(event)   # coarse IPC-phase HINT (food-security domains) — NOT an IPC classification

The IPC helper is a legibility hint only; its caveat is embedded in the return value and it never assigns Phase 5 (Famine), which is a formal analytical act.

Provenance: trust integrity as a declared field

Every event declares its reality and epistemic confidence, so downstream systems never have to guess:

from africa_coord_bus import CoordinationEvent, EventReality, EventConfidence
CoordinationEvent(..., reality=EventReality.DEMO, confidence=EventConfidence.PROBABLE)

• reality (REAL | DEMO) — a DEMO event can never export as a live CAP alert (status=Exercise), declared not string-sniffed. Default REAL.
• confidence (CONFIRMED | PROBABLE | SPECULATIVE | UNKNOWN) — the epistemic ladder; flows into CAP certainty (Observed/Likely/Possible/Unknown). Default UNKNOWN — undeclared confidence is never assumed.