Context7
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Description from the maker (original English)
Force evidence-gated, tiered claim reporting (FACT/INFERENCE/SPECULATION). No-LLM.
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You need
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Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"verify-claim": {
"command": "uvx",
"args": [
"mcp-verify-claim"
]
}
}
}Run this in your terminal
claude mcp add verify-claim -- uvx mcp-verify-claimPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"verify-claim": {
"command": "uvx",
"args": [
"mcp-verify-claim"
]
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"verify-claim": {
"type": "stdio",
"command": "uvx",
"args": [
"mcp-verify-claim"
]
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
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Runs on your computer; the tool list appears in your AI app after you install it.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026
The registry name was verified with the GitHub account sudo-ai-git, which owns the repo
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This one runs on your computer; there is no internet endpoint
Runs on your computer and uses local settings instead
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The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 2 months ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.
In the same category: Context7, Codebase Memory, Exa
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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.
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A Model Context Protocol (MCP) server that forces evidence-gated, honestly tiered claim reporting. Every claim an agent makes gets classified into an evidence tier (FACT / INFERENCE / SPECULATION / UNVERIFIED) with attached evidence — the antidote to the silent-unverified-claim failure mode ("pushed successfully", "the tests pass", "the API returned 200" — asserted without ever running the command).
Deterministic, no LLM, no network calls. Self-hostable, MCP-compatible with any agent (Claude Code, Cursor, Copilot, OpenClaw, Codex CLI).
The most common agent failure is not wrong reasoning — it's reporting a plausible-sounding *result that was never verified*. mcp-verify-claim installs a hard gate: no unverified claim can be reported as fact.
When you give an agent access to real operations (edits, checks, rule evaluation, mutations) through MCP, the value is that it can answer with evidence instead of opinion — it ran the check, it saw the real state, it can prove what it did. But that only holds if the agent is *forced* to attach the evidence. A rules-and-checks surface ("is the module valid?", "did this state change slice apply?", "what actually changed?") is exactly the high-value case: each check produces a machine-verifiable result.
mcp-verify-claim is the gate that guarantees the agent reports the result with its evidence attached (exit code, real read-back, actual HTTP status) and cannot pass off a guess or an unrun step as truth. Pair it with any MCP surface that exposes operations, and the agent's answers become auditable, line-by-line, instead of plausible.
tier_claim(claim, evidence, verification_kind) — classify a claim into a tier + verdict (TRUST / REVIEW / DO-NOT-REPORT) + honest next-action.check_claim(claim) — deterministic scan for fabrication/hedging signals (completion-without-artifact, "the API returned", hedge words).report_templates() — the canonical STATUS / EVIDENCE / GAPS completion shape and the 6-step behavioral loop.tier_definitions() — the FACT / INFERENCE / SPECULATION / UNVERIFIED definitions.| Tier | Meaning | Verdict |
|---|---|---|
| FACT | Saw it in raw tool output (exit code, body, file read-back, HTTP status) | TRUST |
| INFERENCE | Deduced from facts; show the chain | REVIEW |
| SPECULATION | A guess; never report as truth | REVIEW |
| UNVERIFIED | No evidence produced | DO-NOT-REPORT |
One command (recommended) — installs from the repo, no PyPI token needed:
uv tool install git+https://github.com/sudo-ai-git/mcp-verify-claim
mcp-verify-claim # run stdio server mcp-verify-claim --http --port 8137 # or Streamable HTTP for remote use
Or with pipx: pipx install git+https://github.com/sudo-ai-git/mcp-verify-claim
Direct from source (fallback):
pip install mcp
python3 mcp_server.py
{ "mcpServers": {
"verify-claim": { "command": "mcp-verify-claim", "args": [] } }}
tier_claim("Successfully deployed", evidence="", verification_kind="")
--> tier UNVERIFIED, verdict DO-NOT-REPORT signals: [high] completion claim without artifact next: go get the evidence before reporting
tier_claim("Deploy is live", evidence="origin/main SHA==local HEAD, HTTP 200", verification_kind="read_back") --> tier FACT, verdict TRUST
This is one of three deterministic, no-LLM agent-trust MCP servers by sudo-ai-git:
mcp-skill-sec — pre-install skill/security auditmcp-verify-claim — evidence-gated, honestly-tiered claim reporting (this repo)mcp-benchmark-hygiene — pytest config-leakage / eval-honesty detectionSibling product: mcp-token-saver — token-cost proxy + analyzer for agent conversations (dedupes redundant tokens before they're billed; live-proven 74% cut). Discussion
Also in the family (a free CLI, not an MCP server): harness-audit — deterministic agent-eval / benchmark-grading hygiene audit that catches the same silent config-leakage mis-scoring class. Free lead-magnet; the same verification discipline, zero dependencies, auditable line-by-line.
MIT. Written by sudo-ai-git. Standalone behavioral-rigor tool; encodes no proprietary method. MCP expression of the verify-before-claim agent skill.
mcp-name: io.github.sudo-ai-git/mcp-verify-claim
Need this connected to *your* internal system (auth, logging, security-scan pass, hosted)? Open a custom-build request. MIT reference assets are free to use either way.