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Explorer/MCP/lonniev/excalibur-mcp
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eXcalibur MCP

lonniev/excalibur-mcp

Enables AI agents to post richly formatted tweets to X (Twitter) with optional images, monetized via Bitcoin Lightning micropayments and secured with OAuth2 PKCE, Nostr identity, and encrypted credential vaulting.

↗lonniev/excalibur-mcpExternal link; availability not verifiedLicenseApache 2.0Remote-capable
The Newcomer
Hasn't been around long. Nothing caught our attention, but there isn't much history to go on yet.
Time indexed (2mo)
0toolsRemote/ HTTP2moindexed
Checked Sep 1, 2026
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Not enough data to score this server yet.
First indexed Aug 1, 2026
Server Profile
⚙
Tools catalogued
0
No tools reported by this server.
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Hosting
Remote / HTTP
Runs on the internet. No access to your filesystem, SSH keys, or environment variables.
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Registry presence
Verified
Listed on the Official MCP Registry under Linux Foundation governance.
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Liveness
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No liveness checks recorded yet.
Publisher Verification
✓ Listed on the Official MCP Registry under Linux Foundation governance.
↗lonniev/excalibur-mcpExternal link; availability not verified
Environment variables (7)
SEED_BALANCE_SATSstringOPTIONALdefault: 0
Starter credits for new users (default: 0)
CONSTRAINTS_CONFIGstringOPTIONAL
Optional constraint-engine configuration payload
CONSTRAINTS_ENABLEDstringOPTIONAL
"true" to enable constraint engine evaluation on tool calls
SCHEDULER_WORKER_URLstringOPTIONALdefault: https://excalibur-scheduler.lonniev.workers.dev
Public URL of the scheduled-post cron Worker (default: https://excalibur-scheduler.lonniev.workers.dev)
TOLLBOOTH_NOSTR_RELAYSstringOPTIONAL
Comma-separated relay URLs (overrides defaults)
TOLLBOOTH_NOSTR_OPERATOR_NSECstringREQUIRED
Operator's Nostr secret key for identity bootstrap and DM encryption
DPYC_REGISTRY_CACHE_TTL_SECONDSstringOPTIONALdefault: 300
How long to cache the DPYC community registry (default: 300)

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