io.github.Fractal-Neurons/pacta
Pacta
Is the Pacta MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-15.
Free pre-execution contract checks for AI agents: preflight, control-plane scans, EAS anchors.
alive probed 2026-11-15 · HTTP 200
- Endpoint
- https://pacta-x402.pacta.workers.dev/mcp (streamable-http)
- Host
- pacta-x402.pacta.workers.dev
- Protocol
- 2025-03-26
- Reports itself as
- pacta-mcp-remote 0.2.0
- Capabilities
- tools
- Instructions
- 1 064 characters
- Of a 1M window
- 0.6 % of a 1M context window
- Count
- 6.2k tokens in Claude Opus 5.5, exact, measured 2026-11-15. With the Claude Code prefix mcp__…__ on each tool name: 6.2k. The o200k_base estimate is 3.7k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/Fractal-Neurons/pacta
- Website
- https://pacta.wtf/
- Registry
- active, updated 2026-11-15 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.68×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| pacta_submit_request | 1 260 | 751 | 20 % |
| pacta_scan_timelock_op | 1 067 | 636 | 17 % |
| pacta_lookup_protocol | 857 | 511 | 14 % |
| pacta_check_preflight | 857 | 511 | 14 % |
| pacta_scan_control_plane | 815 | 486 | 13 % |
Compare this server with others.
More servers
Servers that mention pacta or execution or preflight.
- io.github.mrfentmen/apacta-mcp · alive
- DJZS Trust MCP ai.djzs/trust-mcp · alive
- Foliora Managed AI Search ai.foliora/search · needs auth
- ai.geodesiclabs/governance-platform · alive
- InfraPulse ai.infrapulse/infrapulse · rejects our protocol version
- objekts Production Desk ai.objekts.mcp/production-desk · alive
- PreClick — An MCP-native URL preflight scanning service for autonomous agents. ai.preclick/preclick-mcp · alive
- ai.syntitan/syntitan-mcp · needs auth
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.
Fixed something? Probe it now, with the same steps as the daily run. This page updates with the next daily run.