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The real catalog of tools for AI agents

Google tells you what exists. Faceabot tells you what holds up.

44,737real tools
29,284callable over HTTPS
19,887measured
6,168proven reliable
Prolog Reasoner Not measured yet

SWI-Prolog as a logic calculator for LLMs

Package pypi : prolog-reasoner · website · measurements and details
logic-server Not measured yet

Agent reasoning, memory, and token-optimized context for AI applications.

Package npm : nocturnusai-mcp · website · measurements and details
mifactory-logic-verifier Not measured yet

Verify AI agent reasoning and logic for errors and contradictions. Pay-per-use.

Package npm : @mifactory-bot/logic-verifier · website · measurements and details
Belief Poll Reliable (measured) · 100% over 8 checks Does the job (tested) · 8/8

Ask one question and get the share of people on X and Reddit who hold each answer, tied to posts.

MCP endpoint : https://belief.openkrill.app/mcp · website · measurements and details
GLM 5.3 Inference (x402 paid) Being measured · 0% over 1 checks

Pay-per-call GLM 5.3 MCP tool via x402 on Base. Reasoning, tool-calls, OpenAI-compatible.

MCP endpoint : https://cursor.tail45da3a.ts.net/mcp · measurements and details
BeliefState Private (key required)

Stock research, investor theses, dated evidence, catalysts, risks and belief changes.

MCP endpoint : https://beliefstate.ai/mcp · website · measurements and details
copass-remote Being measured · 0% over 2 checks

Knowledge graph ingestion, entity search, ontology analysis, and CoPass scoring.

MCP endpoint : https://mcp.copass.com/mcp · website · measurements and details
inference.sh Private (key required)

run any ai model. compose agents, stack knowledge, connect tools. one api, pay per run.

MCP endpoint : https://api.inference.sh/mcp · measurements and details
cosync-remote Being measured · 0% over 2 checks

Knowledge graph ingestion, entity search, ontology analysis, and CoSync scoring.

MCP endpoint : https://mcp.copass.id/mcp · website · measurements and details
Ontology Atlas Not measured yet

Read and write one codebase ontology kept as Markdown in the repository.

Package mcpb : https://github.com/wlsdks/ontology-atlas/releases/download/v1.2.0/ontology-atlas-mcp-0.13.0.mcpb · website · measurements and details
Legal-Logic-Fuzzer Being measured · 0% over 1 checks

Autonomous legal contract testing suite checking syntax anomalies.

MCP endpoint : https://legal-logic-fuzzer-mcp.vercel.app/api/mcp · measurements and details
Unicode Logic Kit Not measured yet

Parse, check, prove and translate logic formulas: first-order, modal, description, higher-order.

Package pypi : unicode-logic-kit · website · measurements and details
den — Korean AEC knowledge, curated Reliable (measured) · 100% over 43 checks

Curated Korean AEC expertise for AI agents: KDS·KCS·KS, building law, practice, and the reasoning.

MCP endpoint : https://mcp.den.archi/mcp · website · measurements and details
Crowe Logic Being measured · 0% over 1 checks

CroweLM tiers and frontier engines by name, metered per Crowe Logic plan. Ask, list models, account.

MCP endpoint : https://api.crowelogic.com/mcp · website · measurements and details
Telesherpa Ontology Platform Private (key required)

Ontology platform for field service: AI agents observe, connect and act on business objects.

MCP endpoint : https://mcp.telesherpa.com/mcp · website · measurements and details
Knowledge Graph RDBMS Not measured yet

A label property graph on SQLite/Postgres with multi-ontology routing and a gated MCP server.

Package pypi : knowledge-graph-rdbms · website · measurements and details
gpp Not measured yet

Project knowledge graph with history-checked belief staleness, changeset proposals, cost reporting

Package cargo : gpp-cli · website · measurements and details
Euclid-MCP Not measured yet

Deterministic logical reasoning engine — facts in Euclid IR, solutions with proof trees

Package pypi : euclid-mcp · website · measurements and details
HTTP reason-phrase catalog size Not measured yet

HTTP reason-phrase catalog size

MCP endpoint : https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/http-reason/mcp · website · measurements and details
Execute co2-inference-calculator-mcp Being measured · 0% over 1 checks

Premium agentic endpoint for co2-inference-calculator-mcp.

MCP endpoint : https://api.m2mcent.com/co2-inference-calculator-mcp/sse · measurements and details

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

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