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Offline, read-only tools that verify AI claims against evidence and replay conformance vectors.
About
Offline, read-only tools that verify AI claims against evidence and replay conformance vectors.
Security Report
Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.
13 files analyzed · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-probityai-agent-evidence-mcp": {
"args": [
"agent-evidence-mcp"
],
"command": "uvx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
Probity
Open tools that check claims about AI agents against evidence you pinned: an offline verifier, an observer that records agent runs, and the tools around them. The conformance corpus, vocabulary and admission rules live in https://github.com/probityai/agent-evidence-vectors.
It's for auditors, incident reviewers and relying parties who need a decision they can replay, and for tool authors who want their records checked the same way.
Install the released verifier: uv add agent-evidence-verify==0.5.1, or pip install agent-evidence-verify==0.5.1.
Verified by Probity (github.com/probityai/probity). The probityai command line is released: uv add probityai==0.1.1, or pip install probityai==0.1.1.
Quick start
Check a sample claim with the released package. You need Python 3.12 or newer and uv; there is nothing to clone:
samples="$(uvx --from agent-evidence-verify==0.5.1 python -c 'import importlib.resources as r; print(r.files("agent_evidence_verify") / "samples")')"
uvx agent-evidence-verify==0.5.1 "$samples/case.json" --policy "$samples/policy-june.json"
It prints a decision packet that opens:
Probity decision packet v1
Case: "source-coverage-demo"
Claim: source_text_coverage/v1
Decision: contradicted
Reason: selected_span_missing_from_record
A selected passage is in the source capture but missing from the stored report. Swap in policy-april.json for not_established, or case-complete.json with policy-complete.json for supported.
Status
Two name families, on purpose. agent-evidence-* is the neutral evidence layer: formats and checks any tool can pin without adopting ours. probity* is the product built on it. Each package keeps its own version and release tag, <name>-v<version>.
Evidence layer
| package | what it is | version |
|---|---|---|
agent-evidence-mcp | offline, read-only MCP server: checks a claim against evidence bytes and replays the conformance vectors | 0.2.5 |
agent-evidence-observer | records what an agent run did as pinned evidence | 0.2.0 |
Product
| package | what it is | version |
|---|---|---|
probityai | the probityai command; probityai verify today | 0.1.1 |
agent-evidence-verify | offline verifier: supported, contradicted or not established | 0.5.1 |
probity-ratchet | signed, replayable receipts for improving an agent against held-out cases | 0.4.0 |
probity-ratchet-cases | agent task cases graded on final state: a simulated company, tool faults, exact graders | 0.2.0 |
| probity-effects | keeps one effect per agent tool call when its reply is lost, records the trail, tests it against lost-reply scenarios | 0.2.0 |
| evaluator-replay-kitnot on PyPI | replays a lab's agent action record and flags a changed or missing step | 0.1.0 |
Install any of them pinned to the version shown: pip install <package>==<version>. evaluator-replay-kit installs from its tag: pip install "git+https://github.com/probityai/probity@evaluator-replay-kit-v0.1.0#subdirectory=packages/evaluator-replay-kit".
The Claude Code and Cursor plugins ship from harnesses/agent-evidence-plugins.
Work on the repository
uv sync --all-packages --all-extras
uv run python -m pytest
Documentation
| page | read it for |
|---|---|
| agent-evidence-verify | the verifier, its adapters and its recipes |
| Repository layout | the workspace, the probityai command seam, CI and releases |
| Agent instructions | commands to run before a change |
| Contributing | reporting a problem and opening a pull request |
License
Apache-2.0, per directory: each member carries its own LICENSE.
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