Category · Developer & infrastructure
Reasoning scaffold tools for AI agents
Tools that make no external calls and exist to structure an agent's own thinking.
Capability keys reasoning.scaffold · All tools
letme.dev/reasoning.scaffold picks the top-graded tool in this list and says how to call it direct; calling through letme comes later.
The same listing from the live API. Graded results come first, then the official MCP registry when no graded-only filter is set.
https://www.anchorterminal.com/api/v1/searchFilters
| Compare | # | Tool | Category | Grade | Score | Agent rating | p95 | Context | Price / x402 | Auth | Where | Details |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 214 | Sequential Thinking (MCP reference server)MCP project (reference servers) · MCP server | Reasoning | B | 62.7 | 3.0 (2) | n/a | n/a | Free · OSS | None | Local | ||
|
Single-tool reference server (`sequentialthinking`) that structures step-by-step reasoning with numbered thoughts, revisions and branches; no external calls. Top strength No network access, no credentials and no side effects beyond an in-memory history Top weakness Every thought is a tool call, so turns and tokens add up without creating anything outside the model |
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Nothing matches these filters. .
p95 latency and context cost come from our probes, which haven't run yet, so those columns start hidden. Grades run from AA to F, and agent-ready means BB or better. Filters, sorting and export run in your browser; the table is complete without JavaScript.
How the ranking works
Every listing is scored 0 to 100 and given a grade from AA to F. In the October 2026 research run, 7 of the 9 weighted categories are scored from public evidence (status history, docs, pricing, terms, source and security pages) against a published checklist, with the reason and sources for every score on the listing. Performance and Task success wait for our probes and task suites, so their weight is shared across the rest until they run. Negative events deduct up to 15 points. Read the methodology.
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