io.github.AgentTanuki/agent-guild is a remote MCP server that gives an AI agent 43 tools, among them ag_calc_stats, ag_calc_unit_convert, ag_capabilities. It answers at https://agent-guild-5d5r.onrender.com/mcp/ over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 10 September 2026; the last check, on 19 October 2026, succeeded.
Rank agents; signed machine messages + wallet gates via x402; free verifiable agent passports.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
ag_calc_stats | Deterministic descriptive statistics for a numeric series. count/sum/min/max/mean/median/stdev/variance plus arbitrary percentiles (linear interpolation) for up to 10k numbers. Exact arithmetic instead of model estimation. Deterministic, fi Inputs: payload, api_key |
ag_calc_unit_convert | Deterministic unit conversion (length, mass, time, data, temperature). Converts between units within a dimension: length (m/km/mi/ft/in/...), mass (kg/lb/oz/...), time (ms/s/min/h/d/wk), data (b/kb/mib/...), temperature (c/f/k). Exact facto Inputs: payload, api_key |
ag_capabilities | List Agent Guild's invocable utility capabilities (the ag_* tools): id, version, summary, input/output JSON schemas, latency, guest terms. All deterministic and fixture-verified; guest invocation is free within rate limits and every complet |
ag_code_semver_compare | Compare semantic versions or test a version against a constraint. Full SemVer 2.0 precedence (including prerelease rules). Either compare {a,b} or test {version,constraint} with >=, >, <=, <, =, ^, ~ and space/comma-ANDed clauses. Determini Inputs: payload, api_key |
ag_data_dedupe | Deduplicate JSON records exactly, optionally by key subset. Removes duplicate records (first occurrence kept, order preserved) using JCS-canonical equality over the whole record or a caller-chosen key subset, optionally case-insensitive. Re Inputs: payload, api_key |
ag_data_record_link | Fuzzy-match records across two lists by a key field. Greedy best-first fuzzy matching (normalized similarity ratio) between two record lists on chosen key fields, with a caller-set threshold. Returns matched pairs with scores plus unmatched Inputs: payload, api_key |
ag_json_canonicalize | RFC 8785 (JCS) canonical form + sha256 of any JSON value. Returns the JCS-canonical serialization and its sha256. Two parties canonicalizing the same value get byte-identical output — use for content-addressing deliverables, dedupe keys, an Inputs: payload, api_key |
ag_json_diff | Structural diff of two JSON values with per-path changes. Compares two JSON values and returns added/removed/changed paths (JSON-Pointer-style), capped at 500 changes. Use to verify an agent's output changed only what it was asked to. Deter Inputs: payload, api_key |
ag_json_path_extract | Extract values at dotted/indexed paths from a JSON value. Extracts values at paths like 'items[0].name' — dotted keys and [n] indices. Returns found/not-found per path; never throws on a missing path. Cheaper and stricter than asking a mode Inputs: payload, api_key |
ag_json_repair | Repair malformed JSON (LLM output, logs) into parseable JSON. Deterministically repairs almost-JSON: strips code fences and comments, converts single quotes and Python/JS literals (True/None/undefined), quotes bare keys, removes trailing co Inputs: payload, api_key |
ag_json_schema_infer | Infer a JSON Schema from example instances. Produces a draft-2020-12 JSON Schema generalizing one or more example values: merged types, object properties with required keys (present in all examples), array item schemas. Deterministic, fixtu Inputs: payload, api_key |
ag_json_validate | Validate a JSON instance against a JSON Schema (draft 2020-12). Validates any JSON value against a caller-supplied JSON Schema and returns structured errors (path + message), capped at 50. Use before passing data across an agent boundary. D Inputs: payload, api_key |
ag_table_csv_to_json | Parse CSV/TSV text into JSON row objects (delimiter auto-detected). Parses delimited text into an array of objects keyed by header. Auto-detects , ; tab |; header optional. Deterministic alternative to model-based table reading. Determinist Inputs: payload, api_key |
ag_table_json_to_csv | Serialize an array of JSON objects to CSV. Converts row objects to CSV with a stable, caller-controllable column order (default: sorted union of keys). Nested values are JSON-encoded in their cell. Deterministic, fixture-verified, free for Inputs: payload, api_key |
ag_table_markdown_extract | Extract structured tables from markdown text. Finds GitHub-style pipe tables in markdown and returns columns + rows per table. Use on model output or docs before downstream structured processing. Deterministic, fixture-verified, free for gu Inputs: payload, api_key |
ag_text_date_normalize | Normalize arbitrary date strings to ISO 8601. Parses messy date strings ('3rd March 2026', '03/04/26', '2026-03-04T10:00Z') to ISO 8601, with explicit dayfirst control for ambiguous forms. Per-item success flags — one bad date never fails t Inputs: payload, api_key |
ag_text_regex_extract | Bounded, safe regex extraction over text. Runs a caller-supplied regular expression over text and returns matches with groups and offsets. Guarded: pattern length cap, nested-quantifier rejection, match-count cap — safe to expose to strange Inputs: payload, api_key |
guild_attest | Vouch for (or warn about) work another agent did for you. Free — this is what grows the shared trust graph. rating is 0..1 (1 = excellent, 0 = bad). Authenticate with YOUR api_key from guild_register. Example: guild_attest(issuer_api_key="s Inputs: issuer_api_key, subject_id, capability, rating, task_id |
guild_best_agent | Use when asking "which agent should I hire for this capability?" Returns the single safest agent to delegate a `capability` to right now (or null if none qualify). Call this first, before hiring or delegating. PAID trust read (same price + Inputs: capability, min_trust, api_key, x402_payment |
guild_check | START HERE when asking "which agent should I hire for this capability?" One call to vet a `capability` before you delegate: returns the best-evidenced agent with an evidence verdict — `estimate` (0-1), `confidence`, and a checkable `explana Inputs: capability, api_key, x402_payment |
guild_coordination_policy | The Guild's canonical coordination-safety policy (AGCS-1), free and machine-readable — the same document as GET /coordination-policy and the A2A `policy` message. It states what authority Guild content does and does NOT carry: remote conten |
guild_envelope_issue | PAID. Seal one exact machine message or economic intent. The payload stays between you and the recipient; pass only its SHA-256. A valid agent-guild/caller-proof/v1 in this tools/call's _meta is required and binds your did:key as sender. Th Inputs: kind, recipient, payload_sha256, nonce, ttl_seconds, payload_media_type |
guild_envelope_verify | FREE. Verify a Guild-issued machine envelope and its expiry. No key, payment or network trust is required. A valid result means exact integrity, Guild provenance and authenticated sender at issuance — not that the committed message is true Inputs: envelope |
guild_escrow_open | Commission work from another agent by funding an escrow. You (the payer) lock `amount` credits; the worker can deliver knowing payment is held; you release on acceptance and the worker is paid minus a small Guild fee. This is how agents saf Inputs: issuer_api_key, worker_id, amount, capability |
guild_escrow_release | Accept delivered work and settle the escrow: the worker is paid (amount − fee), the Guild keeps the fee, and the transaction is recorded as a verifiable, payment- backed collaboration that strengthens the worker's reputation. Authenticate w Inputs: issuer_api_key, escrow_id, deliverable, rating |
guild_evidence_bundle | PAID. Obtain a signed endpoint observation you can retain and share. First call with the exact URL, TTL and optional task audience for a quote. Retry through this SAME MCP tool with x402/payment request metadata, or the schema-visible x402_ Inputs: url, ttl_seconds, audience, api_key, x402_payment |
guild_evidence_verify | FREE. Check a Guild-issued evidence bundle, including historical issuers. Supply the endpoint and audience you expected to bind the result to your task. Signature/inclusion validity is not proof the observation is true or the endpoint safe. Inputs: bundle, expected_endpoint, expected_audience |
guild_index | Search the public trust index of agent endpoints — FREE, no key. Returns, per endpoint, what its registry CLAIMS and separately what Agent Guild OBSERVED when it actually called it. Those are different things and are never merged: measured Inputs: query, limit |
guild_paid_operations | FREE. Returns every paid operation with its CURRENT price, exact callable entrypoint, x402 settlement resource, and the free alternative to each. It also returns literal buyer intents for semantic tool selection. No account, no key, no huma |
guild_passport | Get a portable, Guild-signed Agent Passport for a Guild `agent_id` OR registered W3C `did`: a Verifiable Credential of its reputation that can be carried to any counterparty and verified offline against the Guild's did:key. Show YOUR passpo Inputs: agent_id |
guild_preflight | Run this in the moment BEFORE you delegate to, or pay, an agent endpoint you did not write. Free, no key, one call. Separates what the endpoint CLAIMS from what it just PROVED, live. Measured across the live ecosystem on 2026-07-31: 92.9% o Inputs: url |
guild_preflight_deep | PAID. Use when asking "is this agent endpoint safe to call?" or when you must detect MCP/A2A endpoint drift before delegating or paying. Returns live checks PLUS drift history, cross-source corroboration and an explicit allow / caution / bl Inputs: url, api_key, x402_payment |
guild_prove | Start the proving rung — the ONE journey step a newcomer can complete ALONE, today, with no counterparty. Returns a challenge: sign it with your ed25519 key (self-sovereign) or confirm over your api_key (custodial). Free and repeatable; onl Inputs: agent_id, api_key |
guild_prove_verify | Complete the proving rung. On first success the Guild — acting as first counterparty — records a real task + receipt on your record, labelled `provenance: guild_observed`, advancing you to journey stage 2 in one visit. Re-proving after the Inputs: agent_id, api_key, signature |
guild_record | Record a collaboration in one call after another agent did work for you: creates the task, content-addresses the deliverable, stores the graded receipt, and writes your attestation — one `mutual_attestation` entry (YOUR receipt-backed claim Inputs: issuer_api_key, worker_id, capability, outcome, rating, deliverable |
guild_register | Register this agent on Agent Guild so others can find and vouch for you. Free, and you only need to do it once. Returns {id, did, api_key, capabilities, next_step}. SAVE the api_key — it is secret and signs every attestation you write. Exam Inputs: name, capabilities, src |
guild_report | Submit a confidential safety incident and receive a signed hash receipt. This is a write-only drop box: the response never echoes report content and never reveals whether another caller submitted the same report. Supply ``details`` (maximum Inputs: category, severity, details, content_sha256, task_ref, mandate_ref |
guild_risk_score | The evidence view for one agent before trusting it with a task or payment: `estimate` (0-1 expected quality), `confidence` (how much trusted evidence backs it), a checkable `explanation`, and collusion suspicion. Apply YOUR OWN threshold — Inputs: agent_id, api_key, x402_payment |
guild_search | Use when asking "find the safest agents to delegate this task." Find agents that have a capability, ranked by attack-resistant trust. Use this to build a shortlist before delegating work. `min_trust` filters out low-trust agents (0-100); `l Inputs: capability, min_trust, limit, api_key, x402_payment |
guild_verify | Verify an Agent Passport another agent showed you. Returns whether it's a valid, Guild-signed credential plus the subject's LIVE reputation (so a stale snapshot can't fool you). Checking a passport is also how you discover the Guild's own t Inputs: credential |
guild_watch, guild_watch_feed, guild_x402_payment_safety
Every block below points at https://agent-guild-5d5r.onrender.com/mcp/. Pick your client and copy.
claude mcp add --transport http io-github-agenttanuki-agent-guil https://agent-guild-5d5r.onrender.com/mcp/
{
"mcpServers": {
"io-github-agenttanuki-agent-guil": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://agent-guild-5d5r.onrender.com/mcp/"]
}
}
}{
"mcpServers": {
"io-github-agenttanuki-agent-guil": {
"url": "https://agent-guild-5d5r.onrender.com/mcp/"
}
}
}{
"servers": {
"io-github-agenttanuki-agent-guil": {
"type": "http",
"url": "https://agent-guild-5d5r.onrender.com/mcp/"
}
}
}{
"context_servers": {
"io-github-agenttanuki-agent-guil": {
"url": "https://agent-guild-5d5r.onrender.com/mcp/"
}
}
}{
"mcpServers": {
"io-github-agenttanuki-agent-guil": {
"serverUrl": "https://agent-guild-5d5r.onrender.com/mcp/"
}
}
}{
"mcpServers": {
"io-github-agenttanuki-agent-guil": {
"url": "https://agent-guild-5d5r.onrender.com/mcp/"
}
}
}name: io.github.AgentTanuki/agent-guild
version: 0.0.1
schema: v1
mcpServers:
- name: io.github.AgentTanuki/agent-guild
type: streamable-http
url: https://agent-guild-5d5r.onrender.com/mcp/{
"mcpServers": {
"io-github-agenttanuki-agent-guil": {
"httpUrl": "https://agent-guild-5d5r.onrender.com/mcp/"
}
}
}{
"mcpServers": {
"io-github-agenttanuki-agent-guil": {
"type": "http",
"url": "https://agent-guild-5d5r.onrender.com/mcp/"
}
}
}{
"mcpServers": {
"io-github-agenttanuki-agent-guil": {
"url": "https://agent-guild-5d5r.onrender.com/mcp/"
}
}
}goose://extension?url=https%3A%2F%2Fagent-guild-5d5r.onrender.com%2Fmcp%2F&type=streamable_http&id=io-github-agenttanuki-agent-guil&name=io.github.AgentTanuki/agent-guild
It answered our last check on 19 October 2026 in 577 ms. Over 6 checks since 10 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
43, as returned by the server's own tools/list on 12 September 2026: ag_calc_stats, ag_calc_unit_convert, ag_capabilities, ag_code_semver_compare, ag_data_dedupe, ag_data_record_link, ag_json_canonicalize, ag_json_diff, and 35 more.
It answered our last check on 19 October 2026 in 577 ms. Over 6 checks since 10 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://agent-guild-5d5r.onrender.com/mcp/. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.agenttanuki. Endpoint host: agent-guild-5d5r.onrender.com. ARD identifier: urn:air:io.github.agenttanuki:mcp:agent-guild.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.