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Audifact

Official registry AI and agents

Signed, append-only receipts of an AI agent's decisions and outcomes, with public proof links.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http audifact 'https://api.audifact.io/mcp' --header 'X-API-Key: <Audifact API key (af_...) from audifact.io Dashboard -> API Keys. Events bill to this key'\''s account.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "audifact": {
            "type": "http",
            "url": "https://api.audifact.io/mcp",
            "headers": {
                "X-API-Key": "<Audifact API key (af_...) from audifact.io Dashboard -> API Keys. Events bill to this key's account.>"
            }
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Audifact agent plugin
  2. Install
  3. ⚠️ Append-only ledger
  4. Billing
  5. Privacy
  6. Tools
  7. Repo layout
  8. License

Audifact agent plugin

Your agent keeps a signed receipt of its decisions.

This repo packages Audifact’s hosted MCP server (https://api.audifact.io/mcp) plus a skill that tells the agent to log consequential decisions, external actions, and subagent delegations — then hand you proof links (https://audifact.io/e/{event_hash}).

It is receipts, not silent full tracing. Target about 3–10 events per active day.

Install

1. Audifact API key (all clients)
  1. Create an account at https://audifact.io/signup (the plugin never creates accounts).
  2. Dashboard → API Keys → create a key (af_..., shown once).
  3. Paste it only into the client’s secret / masked field. Never into chat or files.
2. Pick your client

Official MCP Registry / VS Code / Copilot / other registry clients

Listed as io.audifact/audifact in the MCP Registry (search “audifact”). Add the remote server from the registry or your client’s MCP gallery. Provide X-API-Key when prompted. Metadata: server.json.

Claude Code (self-hosted marketplace — no review queue)

/plugin marketplace add audifact/audifact-plugin
/plugin install audifact@audifact

Paste the key into Audifact API key (userConfig, stored in the OS keychain).

Grok Bot / Cursor (x.ai catalog)

Install from the catalog when listed. Paste the key into AUDIFACT_API_KEY.
(Repo renamed from grokbot-plugin → audifact-plugin; resubmit replaces the 2026-10-16 draft.)

Agent Skills only (npx skills add)

npx skills add audifact/audifact-plugin

This installs the skill instructions. You still need the MCP server connected in the same client, or the skill has no tools to call.

3. Confirm

Ask the agent to confirm the Audifact connection. It should log one plugin_connected decision and return a proof URL.

⚠️ Append-only ledger

Everything logged is signed and hash-chained and cannot be edited or deleted. The skill redacts before writing: no secrets, tokens, passwords, full message bodies or file contents — only short summaries.

Billing

Every event consumes credits on the Audifact account that owns the API key.

Privacy

  • Public labels are off by default.
  • Each agent logs under its own agent_name (e.g. grokbot-cos, claude-code).

Tools

log_decision, log_outcome, get_proof, register_agent, list_agent_decisions (deprecated alias: list_my_recent_decisions), list_agent_outcomes.

Repo layout

PathRole
.mcp.jsonGrok/Cursor: X-API-Key: ${AUDIFACT_API_KEY}
.grok-plugin/x.ai / Grok Bot plugin manifest
.claude-plugin/Claude Code marketplace + userConfig key (overrides MCP auth for Claude)
skills/audifact/Agent Skills SKILL.md
server.jsonOfficial MCP Registry remote metadata
assets/logo.svgBrand AF monogram

License

MIT

Frequently asked questions

What is Audifact?

Signed, append-only receipts of an AI agent's decisions and outcomes, with public proof links.

How do I install Audifact?

It runs as a remote server. In Claude Code: claude mcp add --transport http audifact 'https://api.audifact.io/mcp' --header 'X-API-Key: <Audifact API key (af_...) from audifact.io Dashboard -> API Keys. Events bill to this key'\''s account.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Audifact need an API key?

Yes. It expects X-API-Key, which you set in its configuration.

Is Audifact open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Audifact?

It is published by audifact. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.