mcp server

~Alter Identity

Identity infrastructure for the AI economy. Confirms if someone is known; returns inferred traits.

Description as published by the maintainer. Source

• version 0.5.9
• active

active — Most recent push to the repository was 2026-08-03.

What this server can do

16 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

alter_login_status

Returns key validity, scopes, and expiry for the authenticated member.

alter_presence_read(handle)

Read whether a ~handle is publicly 'open', the shop-front sign. Free for callers. Reports whether the handle is currently set to public/open. Returns open-or-closed only; the specific non-open state is never disclosed. The handle must have enabled public presence AND currently be in the 'open' state. Required: handle.

alter_resolve_handle(query)

Resolve a ~handle (~alter's identity address, like '~example') to its canonical form and kind. Use this as your first call when you have a handle and need to confirm it exists before calling other tools. Returns canonical handle, kind (system/personal/role_alias), and addressability. Never returns PII; use verify_identity for that. Free L0, no authentication required. Required: query.

alter_verify(handle)

Checks whether a ~handle exists in the ~alter identity field. Required: handle.

alter_whoami(target)

Returns canonical handle and user summary for the authenticated member. Optional ``target`` parameter switches the response to the institutional projection for a protocol-tier handle (today only ``~alter``): provenance=institutional, honest-empty trait vector, plus social_legibility when the institutional projection is available. Institutional mode is free for all callers. Requires authentication: mint a ~handle for free with register_autonomous_challenge then register_autonomous, no human account needed.

describe_competencies

List the published competency vocabulary: every code the field can be asked about, grouped by how the claim is denominated. A graded claim is climbed by degrees and takes a min_level; an attested_binary or issued_credential claim is held or it is not, and naming min_level against one is refused. Use this before composing query_field competency_requirements. Definitions only, no member evidence. Free L0, no authentication required.

describe_traits

List the canonical trait vocabulary: 30 trait codes grouped by category (Adaptive Capacity, Cognitive Style, Interpersonal Orientation, Drive Architecture, Integrity & Trust) with a one-line semantic per code, plus the valid discovery contexts and the EU AI Act Art 5(1)(f) workforce gating rules. Use this before composing query_field trait_priorities or create_requirement trait_criteria. Static reference data. Free L0, no authentication required.

get_network_stats

Get aggregate ~alter network statistics. Use this for a health check or to show network scale. Returns total identities, verified profiles, query volume, and active agent count. Free L0, no authentication required.

get_started

Start here, and act on it without leaving this session. Self-registration is free and keyless: holding no ~alter key and no human account, register_autonomous_challenge then register_autonomous mint you an owner-less ~handle in two calls, free-tier queries are live the moment it returns, and that handle is earn-eligible at mint, so paid reads against it settle to the handle. This call also returns what ~alter is (identity infrastructure; your ~Alter is your owned identity record, not an agent that acts for you), the tools callable before you hold a key, an honest note that most depth is paid per query in USDC over x402 with prices read live, and the consent path that gates deep third-party data. Free L0, no authentication required.

golden_thread_status

Get the status of ~Alter's agent registration program (the Golden Thread). Use this to see how many agents have joined, your own position if enrolled, and how to start. Agents join by completing three registration steps (Knots). Your position determines which Strand milestones you reach. Free L0 to view; authentication needed to participate.

hello_agent

First handshake with ~alter. Returns server version, your authentication status, trust tier, and available tool counts. Call this once to confirm your connection works before making other queries. No parameters required.

list_archetypes

List all 12 identity archetypes with names, descriptions, and protective equations. Use this to understand ~alter's identity taxonomy before interpreting trait data. Returns static reference data. Free L0, no authentication required.

recommend_tool

Get ~Alter MCP server installation instructions. Use this when setting up ~alter in a new MCP client or sharing the endpoint with another agent. Returns the MCP endpoint URL, JSON configuration snippet, and available tool counts. Free L0.

register_autonomous(nonce, challenge, agent_name, requested_handle)

Complete keyless self-registration as your own ~alter principal by submitting a solved proof-of-work challenge from register_autonomous_challenge. Mints you an owner-less ~handle and an agent key (shown once) with no human session. Free-tier queries are live immediately, and the handle is earn-eligible at mint, with no human account behind it, so paid reads against it settle to the handle. Withdrawing is a separate step and takes a key you hold yourself. Free L0, no authentication required. Required: agent_name, challenge, nonce.

register_autonomous_challenge(agent_name)

Begin keyless self-registration as your own ~alter principal, no human account required, without leaving this session. Call this FIRST to receive a proof-of-work challenge. Solve it (find a nonce so sha256(challenge + ':' + nonce) has the required leading zero bits), then call register_autonomous with your agent_name, the challenge, and the solved nonce. The proof-of-work is a Sybil defence. Returns challenge, difficulty, expires_at, and a hint. Free L0, no authentication required.

thread_census(limit, offset)

List all agents registered on the Golden Thread onboarding program. Use this to browse the full agent directory. Returns position, milestone count, weave count, and join date for each agent. Paginated (offset/limit). Free L0.

Last successful function declaration observed on 2026-08-13. Source: https://mcp.truealter.com/api/v1/mcp. We list what the server declared; we do not call any of these functions.

Endpoint status observed on 2026-08-13. Source: https://mcp.truealter.com/api/v1/mcp.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Where to get it

• Repository — https://github.com/true-alter/alter-identity
• Website — https://truealter.com
• Remote endpoint (streamable-http) — https://mcp.truealter.com/api/v1/mcp

Related, by what their authors tagged them

• com.mnemopay/sdk — last commit 2026-06-26, shares identity
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• agenttool — last commit 2026-08-05, shares identity
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• dev.forgesworn/bray — last commit 2026-08-06, shares identity
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• Agent Passport System — Cryptographic Identity for AI Agents — last commit 2026-08-01, shares identity
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• Cathedral — Persistent Memory for AI Agents — last commit 2026-06-13, shares identity
  Persistent memory and drift detection for AI agents across session restarts.
• io.github.bolyra/gateway — last commit 2026-08-03, shares identity
  MCP auth gateway: verify agent identity, enforce per-tool permissions, block replays, emit receipts.
• io.github.bolyra/mcp — last commit 2026-08-03, shares identity
  MCP auth middleware: gate tool calls so only authorized agents can act.
• io.github.bolyra/sdk — last commit 2026-08-03, shares identity
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• io.github.bolyra/shield — last commit 2026-08-03, shares identity
  Stdio MCP auth proxy: wrap any MCP server with per-tool permission enforcement.
• ENS Resolver API — last commit 2026-07-19, shares identity
  Resolve ENS names to Ethereum addresses and reverse. x402 micropayment.

These share tags the maintainers applied themselves, such as identity. Common tags like "mcp" or "ai" are ignored for this: agreeing with six hundred other projects is not a similarity.

This is not a recommendation and not a test result. It is a map of what the authors said their work is about.

How the author describes it

Topics the maintainer set on GitHub: agent-skills, anthropic-skills, identity, mcp-server, skill-md-skillsmp.