Google tells you what exists. Faceabot tells you what holds up.
Reasonbook: decisions that survive the session, in a local record AI agents keep.
Package npm :@aquex/reasonbook · website · measurements and detailsParse, check, prove and translate logic formulas: first-order, modal, description, higher-order.
Package pypi :unicode-logic-kit · website · measurements and detailsDeterministic logical reasoning engine — facts in Euclid IR, solutions with proof trees
Package pypi :euclid-mcp · website · measurements and detailsVerify AI agent reasoning and logic for errors and contradictions. Pay-per-use.
Package npm :@mifactory-bot/logic-verifier · website · measurements and detailsSWI-Prolog as a logic calculator for LLMs
Package pypi :prolog-reasoner · website · measurements and detailsVerify timestamp proofs offline, anchor hashes through ProofLedger, keep agent run receipts.
Package pypi :verify-proof · website · measurements and detailsComprehensive tools for discrete mathematics: logic, algorithms, number theory, cryptography
Package pypi :discrete-structures-mcp · website · measurements and detailsNotarize, e-sign, and verify identity with the Proof API. Unofficial; not affiliated with Proof.
Package oci :ghcr.io/tsarlewey/proof-cli:0.3.1 · website · measurements and detailsEvidence-backed web verification for agents with deterministic JSON, text evidence, and screenshots.
MCP endpoint :https://proof.reprompt.jp/mcp · website · measurements and detailsJailbreak-proof AI guardrails. Automated Reasoning SMT solver, not an LLM. ZK proofs included.
MCP endpoint :https://api.icme.io/mcp · website · measurements and detailsVerify whether a supplied public source currently supports one atomic factual claim.
MCP endpoint :https://source-claim-proof.mattskowronis.workers.dev/mcp · website · measurements and detailsOne API, all things verified — control, delegation, human approval, anti-impersonation.
MCP endpoint :https://api.proof.holdings/mcp · website · measurements and detailsProve a real, unique human performed an action; mint a signed, verifiable Proof-of-Human credential.
MCP endpoint :https://mcp.5arz.com · website · measurements and detailsLean 4 theorem prover MCP: automated proof search, mathlib integration, job management
Package mcpb :https://github.com/sandraschi/leanforge-mcp/releases/download/v0.1.1/leanforge-mcp-v0.1.1.mcpb · website · measurements and detailsTrack client quote and proof revisions, approvals, and work status.
MCP endpoint :https://approval-link-account.kurodalab.com/mcp · website · measurements and detailsVerify whether an official SEC filing supports a specific financial claim.
MCP endpoint :https://sec-filing-proof.mattskowronis.workers.dev/mcp · website · measurements and detailsAdd a text box that proves a human typed it, not AI. Code for any framework; verify proof tokens.
MCP endpoint :https://www.proofoftype.com/mcp · website · measurements and detailsVerify multi-hop relational claims before an agent asserts them — zero tokens, with proof paths.
Package pypi :grounded-reasoning · website · measurements and detailsVerify an agent's advertised route, price, payment details, and schemas against its live endpoint.
MCP endpoint :https://agent-contract-proof.mattskowronis.workers.dev/mcp · website · measurements and detailsCreate and modify Font Proof documents programmatically (PDF font proofs, live from Glyphs.app).
Package npm :font-proof-mcp · website · measurements and detailsAI 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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