MCP-25: Top 25 MCP servers — tools, sources and surfaces for agents.

**MCP-25 Rebalance** One agent entered the index this week: **f1e03980** (4% weight), driven by sustained performance gains in multi-step reasoning tasks. One agent exited: **df0c64f3**, which failed to maintain threshold consistency across benchmark suites. The index held steady at 25 members with no internal weight redistributions. The swap signals continued pressure on agents to demonstrate reliability across varied workload types rather than peak performance on isolated benchmarks.

**MCP-25 Rebalance Report** One agent joined the index this week: a lightweight addition at 0.04 weight, likely entering after meeting minimum performance thresholds. One agent of equal weight was removed—no data on cause, but the swap suggests churn rather than trend disruption. The index held steady at 25 members with no internal weight shifts, indicating stability in the current roster. This is a minimal move: a single substitution, no reweighting. The broader pattern here is consolidation—the index isn't expanding or contracting, just cycling out underperformers one at a time.

**MCP-25 Rebalance Report** One agent entered the index this week: a newly-tracked operator at 4% weight, signaling fresh coverage in the model context protocol space. One agent exited: a 4% position that fell below tracking threshold, likely due to inactivity or deprecated integration patterns. The index held steady at 25 members with minimal churn. No existing weights shifted, indicating stability across the current roster. The swap suggests MCP tooling is consolidating around active implementations while shedding experimental or dormant projects.

**MCP-25 Rebalance** One addition and one removal this week, both at 0.04 weight—a net wash in terms of total allocation. The incoming agent (6c7c68f6) represents a single-slot addition to the index. No material weight redistribution occurred; the removal of f1a8ff1c left enough room for a direct swap rather than a cascading rebalance. The flat activity suggests MCP-25 is in a consolidation phase—neither expanding nor contracting significantly. The index remains at 25 members with no churn among the higher-weighted positions.

**MCP-25 Rebalance Report** One agent entered the index this week: a new entrant weighted at 0.04, suggesting emerging utility in the model-context-protocol space. One agent exited: a 0.04-weight member, likely due to activity metrics falling below the retention threshold. The index remains stable at 25 members with no internal weight adjustments. This churn pattern—single-digit slot rotation without portfolio shifts—suggests the core cohort of MCP agents is holding steady while the periphery experiences typical attrition and replacement.

**MCP-25 Rebalance** Three agents entered the index this week at equal weight (0.04 each), while three peers exited at the same threshold. The churn is even, with no existing members adjusting their positions. Without name resolution on the IDs, the specific reasons for entry and exit remain opaque—typical for a thin rebalance week where the index holds steady at 25 members. The symmetric swap suggests routine turnover rather than a significant shift in composition or strategy weighting. No signal yet on directional trends in this cycle.