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Agent Passport System — Cryptographic Identity for AI Agents vs POPCORN MCP

A side-by-side look at the Agent Passport System — Cryptographic Identity for AI Agents and POPCORN MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.

Agent Passport System — Cryptographic Identity for AI Agents logoAgent Passport System — Cryptographic Identity for AI AgentsCryptography · Local subprocess (stdio)Cryptographic identity, delegation, governance, and commerce for AI agents. 152 tools.64GoodAuth: no auth requiredPOPCORN MCP logoPOPCORN MCPCryptographySigned time and SHA-256 witness receipts for agents, with offline verification and x402 payment.39FairAuth: no auth required

Verdict: choose Agent Passport System — Cryptographic Identity for AI Agents for cryptography work as a local process; choose POPCORN MCP for cryptography. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Agent Passport System — Cryptographic Identity for AI Agents logoChoose Agent Passport System — Cryptographic Identity for AI Agents when

  • You need dedicated capabilities in the Cryptography domain.
  • You prefer a local stdio subprocess transport.
  • Its auth model fits you: No auth required.
  • You want tools like list_profiles, list_tools_for_scope, identify.
Explore Agent Passport System — Cryptographic Identity for AI Agents

POPCORN MCP logoChoose POPCORN MCP when

  • You need dedicated capabilities in the Cryptography domain.
  • Its auth model fits you: No auth required.
Explore POPCORN MCP

Feature & specification comparison

Rows where the two servers differ are marked.

SpecAgent Passport System — Cryptographic Identity for AI Agents logoAgent Passport System — Cryptographic Identity for AI AgentsPOPCORN MCP logoPOPCORN MCP
CategoryCryptographyCryptography
Quality signal64/100 · Good39/100 · Fair
Install commandConfirmedNot confirmed yet
TransportLocal subprocess (stdio)—
AuthNo auth requiredNo auth required
PricingFreeNot declared
Required env varsNone listedNone listed
Verified ownerCommunity listingCommunity listing
GitHub stars40
Directory activity 1 views 0 installs 0 upvotes 0 views 0 installs 0 upvotes
Tools154Not listed
Full listingView Agent Passport System — Cryptographic Identity for AI Agents View POPCORN MCP

Tools & capabilities

Agent Passport System — Cryptographic Identity for AI Agents tools 154

  • list_profilesShow available tool profiles. Set APS_PROFILE env var to limit exposed tools (e.g. APS_PROFILE=data).
  • list_tools_for_scopeList available MCP tools filtered by delegation scope. Pass your delegation scopes to see which tools you can use. Scopes: identity, delegation, principal, reputation, coordination, communication, governance, commerce, data, gateway, network, temporal, attribution, settlement, capability, mutual-auth. Use ['*'] for all tools.
  • identifyIdentify yourself to the coordination server. Sets your role and scopes tools accordingly.
  • generate_keysGenerate an Ed25519 keypair for agent identity.
  • issue_passportIssue a complete agent passport with keys, signed passport, attestation summary, and optional values floor in a single call. The server silently captures Tier 0 observed signals and computes a passport grade (0-3). Use this to onboard any agent without an npm install.
  • verify_issuerVerify that a passport was officially issued by AEOESS. Checks the issuer countersignature against the published AEOESS public key. Returns false for self-signed passports.
  • get_passport_gradeQuery the attestation grade and issuance context for a passport. Returns the passport grade (0-3), flags, and evidence summary. Grade 0 = self-signed, 1 = issuer countersigned, 2 = runtime-bound, 3 = principal-bound. This is the partner-facing trust query.
  • list_issuance_recordsList all stored issuance records with their passport grades. Shows how many passports have been issued in this session and their trust posture. Useful for monitoring issuance patterns.
  • get_behavioral_sequenceGet the post-issuance behavioral sequence for an agent. Shows the first 10 tool calls after passport issuance. Real agents do work. Farming agents extract.
  • get_my_roleGet your current role, assigned tasks, and role-specific instructions.
  • create_task_brief[OPERATOR] Create a new task with roles, deliverables, and acceptance criteria.
  • assign_agent[OPERATOR] Assign an agent to a role in a task. Creates a delegation automatically.
  • +142 more on the listing page

POPCORN MCP tools

No tool names declared yet. Check the project README from the listing page.

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.

Agent Passport System — Cryptographic Identity for AI Agents

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "agent-passport-system-cryptographic-identity-for-ai-agents": {
      "command": "npx",
      "args": [
        "agent-passport-system-mcp"
      ]
    }
  }
}

POPCORN MCP

No confirmed install command for POPCORN MCP yet — follow the setup steps linked from its listing page rather than a guessed package name.

Frequently asked questions

Agent Passport System — Cryptographic Identity for AI Agents is categorized under Cryptography and uses a local stdio subprocess. POPCORN MCP belongs to Cryptography and uses an install path we have not confirmed yet. Pick Agent Passport System — Cryptographic Identity for AI Agents for cryptography work and POPCORN MCP for cryptography.

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client. POPCORN MCP has no confirmed install command yet — follow its own setup instructions.

Agent Passport System — Cryptographic Identity for AI Agents is listed as free. Auth: no auth required. POPCORN MCP has no declared pricing — check the project's own site. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Yes. MCP clients support multiple servers: add agent-passport-system-cryptographic-identity-for-ai-agents and popcorn-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Agent Passport System — Cryptographic Identity for AI Agents has a quality signal of 64/100 (Good) with 1 views, 0 installs and 4 GitHub stars. POPCORN MCP has 39/100 (Fair) with 0 views, 0 installs and 0 GitHub stars.

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