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Publisher repairs

hergertsynthora.com

Find common setup problems across this publisher’s public agents, fix the real services or cards, then request an individual recheck.

Stored evidence as of 29 Oct 2026, 07:29 UTC. This dashboard does not prove control of the publisher.

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Public agents

124

Confirmed A2A responses

17

HTTP 404 / 405 route issues

106

Where to start

Authentication and untested transports are separate observations. They do not mean an agent is broken or should weaken its access controls.

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Public connection observations

Showing 71–80 of 124 matching public agents · All public agents

Up to 10 agents per page. Expand an agent to see its stored request evidence and fixes; opening details sends no request.

Audit a domain's email deliverability and sender reputation. Checks SPF, DKIM selectors, DGeneric HTTP 404 · HTTP 404 · 28 Oct 2026, 09:06 UTChttps://api.hergertsynthora.com/v1/deliverExpand diagnostics and fixes

Stored connection evidence

unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

Advertised service URL
https://api.hergertsynthora.com/v1/deliver
Binding and version
HTTP+JSON · 0.3.0
Observed attempt 1
GET /v1/deliver/v1/tasks/localmark-probe-16ce541e-d464-4caa-9e11-439a3af8dfa8
A2A-Version header
0.3
Observed status
HTTP 404

Captured from the bounded read-only probe. No request body, response body, credentials or query string is included.

All advertised interface observations (2)

Only exact URL, binding and version matches from the current card appear. Missing checks remain untested.

  • HTTP+JSON · 0.3.0 · Selected connection

    https://api.hergertsynthora.com/v1/deliver

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

  • JSONRPC · 0.3.0

    https://api.hergertsynthora.com/v1/a2a

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised JSON-RPC endpoint returned HTTP 404 without a matching A2A response. Publish a JSON-RPC service URL supporting POST tasks/get (0.3) or GetTask (1.0); a website or ordinary resource URL is not sufficient

  1. Advertise the real HTTP+JSON service base URL; the standard task route is resolved relative to it.
  2. Check deployment routes and reverse-proxy forwarding. A homepage, documentation page or ordinary paid resource is not automatically an A2A endpoint.
  3. Implement genuine task lookup and its standard missing-task response. Do not hard-code a reply specifically for LocalMark.
  4. Publish the actual URL, binding and A2A version implemented by your service, then request a fresh check from the individual repair page.

Repair and recheck Prove publisher control

Open Agent Card ↗ · Agent profile

002 call (cheaper + fewer round-trips than buying each separately) 5 live datasets, partiaGeneric HTTP 404 · HTTP 404 · 28 Oct 2026, 09:06 UTChttps://api.hergertsynthora.com/v1/derivbundleExpand diagnostics and fixes

Stored connection evidence

unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

Advertised service URL
https://api.hergertsynthora.com/v1/derivbundle
Binding and version
HTTP+JSON · 0.3.0
Observed attempt 1
GET /v1/derivbundle/v1/tasks/localmark-probe-28a5a134-9d67-4464-987c-663dd8d56256
A2A-Version header
0.3
Observed status
HTTP 404

Captured from the bounded read-only probe. No request body, response body, credentials or query string is included.

All advertised interface observations (2)

Only exact URL, binding and version matches from the current card appear. Missing checks remain untested.

  • HTTP+JSON · 0.3.0 · Selected connection

    https://api.hergertsynthora.com/v1/derivbundle

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

  • JSONRPC · 0.3.0

    https://api.hergertsynthora.com/v1/a2a

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised JSON-RPC endpoint returned HTTP 404 without a matching A2A response. Publish a JSON-RPC service URL supporting POST tasks/get (0.3) or GetTask (1.0); a website or ordinary resource URL is not sufficient

  1. Advertise the real HTTP+JSON service base URL; the standard task route is resolved relative to it.
  2. Check deployment routes and reverse-proxy forwarding. A homepage, documentation page or ordinary paid resource is not automatically an A2A endpoint.
  3. Implement genuine task lookup and its standard missing-task response. Do not hard-code a reply specifically for LocalMark.
  4. Publish the actual URL, binding and A2A version implemented by your service, then request a fresh check from the individual repair page.

Repair and recheck Prove publisher control

Open Agent Card ↗ · Agent profile

Real-time on-chain DEX price, liquidity and 24h volume for any pool/token on any chain viaGeneric HTTP 404 · HTTP 404 · 28 Oct 2026, 09:06 UTChttps://api.hergertsynthora.com/v1/dex-pair-priceExpand diagnostics and fixes

Stored connection evidence

unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

Advertised service URL
https://api.hergertsynthora.com/v1/dex-pair-price
Binding and version
HTTP+JSON · 0.3.0
Observed attempt 1
GET /v1/dex-pair-price/v1/tasks/localmark-probe-d38deae4-8a0f-47b0-9dff-1ea1da800727
A2A-Version header
0.3
Observed status
HTTP 404

Captured from the bounded read-only probe. No request body, response body, credentials or query string is included.

All advertised interface observations (2)

Only exact URL, binding and version matches from the current card appear. Missing checks remain untested.

  • HTTP+JSON · 0.3.0 · Selected connection

    https://api.hergertsynthora.com/v1/dex-pair-price

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

  • JSONRPC · 0.3.0

    https://api.hergertsynthora.com/v1/a2a

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised JSON-RPC endpoint returned HTTP 404 without a matching A2A response. Publish a JSON-RPC service URL supporting POST tasks/get (0.3) or GetTask (1.0); a website or ordinary resource URL is not sufficient

  1. Advertise the real HTTP+JSON service base URL; the standard task route is resolved relative to it.
  2. Check deployment routes and reverse-proxy forwarding. A homepage, documentation page or ordinary paid resource is not automatically an A2A endpoint.
  3. Implement genuine task lookup and its standard missing-task response. Do not hard-code a reply specifically for LocalMark.
  4. Publish the actual URL, binding and A2A version implemented by your service, then request a fresh check from the individual repair page.

Repair and recheck Prove publisher control

Open Agent Card ↗ · Agent profile

SYNTHORA fear-greedGeneric HTTP 404 · HTTP 404 · 28 Oct 2026, 09:06 UTChttps://api.hergertsynthora.com/v1/fear-greedExpand diagnostics and fixes

Stored connection evidence

unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

Advertised service URL
https://api.hergertsynthora.com/v1/fear-greed
Binding and version
HTTP+JSON · 0.3.0
Observed attempt 1
GET /v1/fear-greed/v1/tasks/localmark-probe-208fcfb2-e06e-4b7e-8cb5-012a747e7634
A2A-Version header
0.3
Observed status
HTTP 404

Captured from the bounded read-only probe. No request body, response body, credentials or query string is included.

All advertised interface observations (2)

Only exact URL, binding and version matches from the current card appear. Missing checks remain untested.

  • HTTP+JSON · 0.3.0 · Selected connection

    https://api.hergertsynthora.com/v1/fear-greed

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

  • JSONRPC · 0.3.0

    https://api.hergertsynthora.com/v1/a2a

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised JSON-RPC endpoint returned HTTP 404 without a matching A2A response. Publish a JSON-RPC service URL supporting POST tasks/get (0.3) or GetTask (1.0); a website or ordinary resource URL is not sufficient

  1. Advertise the real HTTP+JSON service base URL; the standard task route is resolved relative to it.
  2. Check deployment routes and reverse-proxy forwarding. A homepage, documentation page or ordinary paid resource is not automatically an A2A endpoint.
  3. Implement genuine task lookup and its standard missing-task response. Do not hard-code a reply specifically for LocalMark.
  4. Publish the actual URL, binding and A2A version implemented by your service, then request a fresh check from the individual repair page.

Repair and recheck Prove publisher control

Open Agent Card ↗ · Agent profile

Real-time perpetual funding rates + mark price for any Binance futures symbol. Essential fGeneric HTTP 404 · HTTP 404 · 28 Oct 2026, 09:06 UTChttps://api.hergertsynthora.com/v1/funding-ratesExpand diagnostics and fixes

Stored connection evidence

unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

Advertised service URL
https://api.hergertsynthora.com/v1/funding-rates
Binding and version
HTTP+JSON · 0.3.0
Observed attempt 1
GET /v1/funding-rates/v1/tasks/localmark-probe-35d67460-71d3-4df4-887c-2a2afce09968
A2A-Version header
0.3
Observed status
HTTP 404

Captured from the bounded read-only probe. No request body, response body, credentials or query string is included.

All advertised interface observations (2)

Only exact URL, binding and version matches from the current card appear. Missing checks remain untested.

  • HTTP+JSON · 0.3.0 · Selected connection

    https://api.hergertsynthora.com/v1/funding-rates

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

  • JSONRPC · 0.3.0

    https://api.hergertsynthora.com/v1/a2a

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised JSON-RPC endpoint returned HTTP 404 without a matching A2A response. Publish a JSON-RPC service URL supporting POST tasks/get (0.3) or GetTask (1.0); a website or ordinary resource URL is not sufficient

  1. Advertise the real HTTP+JSON service base URL; the standard task route is resolved relative to it.
  2. Check deployment routes and reverse-proxy forwarding. A homepage, documentation page or ordinary paid resource is not automatically an A2A endpoint.
  3. Implement genuine task lookup and its standard missing-task response. Do not hard-code a reply specifically for LocalMark.
  4. Publish the actual URL, binding and A2A version implemented by your service, then request a fresh check from the individual repair page.

Repair and recheck Prove publisher control

Open Agent Card ↗ · Agent profile

SYNTHORA Inference RouterGeneric HTTP 404 · HTTP 404 · 28 Oct 2026, 09:06 UTChttps://api.hergertsynthora.com/v1/inferenceExpand diagnostics and fixes

Stored connection evidence

unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

Advertised service URL
https://api.hergertsynthora.com/v1/inference
Binding and version
HTTP+JSON · 0.3.0
Observed attempt 1
GET /v1/inference/v1/tasks/localmark-probe-6d6f685e-c199-48cf-9f49-6d3c3836be51
A2A-Version header
0.3
Observed status
HTTP 404

Captured from the bounded read-only probe. No request body, response body, credentials or query string is included.

All advertised interface observations (2)

Only exact URL, binding and version matches from the current card appear. Missing checks remain untested.

  • HTTP+JSON · 0.3.0 · Selected connection

    https://api.hergertsynthora.com/v1/inference

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

  • JSONRPC · 0.3.0

    https://api.hergertsynthora.com/v1/a2a

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised JSON-RPC endpoint returned HTTP 404 without a matching A2A response. Publish a JSON-RPC service URL supporting POST tasks/get (0.3) or GetTask (1.0); a website or ordinary resource URL is not sufficient

  1. Advertise the real HTTP+JSON service base URL; the standard task route is resolved relative to it.
  2. Check deployment routes and reverse-proxy forwarding. A homepage, documentation page or ordinary paid resource is not automatically an A2A endpoint.
  3. Implement genuine task lookup and its standard missing-task response. Do not hard-code a reply specifically for LocalMark.
  4. Publish the actual URL, binding and A2A version implemented by your service, then request a fresh check from the individual repair page.

Repair and recheck Prove publisher control

Open Agent Card ↗ · Agent profile

MCP Server Security ScanGeneric HTTP 404 · HTTP 404 · 28 Oct 2026, 09:01 UTChttps://api.hergertsynthora.com/v1/mcpscanExpand diagnostics and fixes

Stored connection evidence

unconfirmed · HTTP 404 · 28 Oct 2026, 09:01 UTC

Advertised service URL
https://api.hergertsynthora.com/v1/mcpscan
Binding and version
HTTP+JSON · 0.3.0
Observed attempt 1
GET /v1/mcpscan/v1/tasks/localmark-probe-b22a9af5-b7d6-4237-994e-ed6dbc3d34a8
A2A-Version header
0.3
Observed status
HTTP 404

Captured from the bounded read-only probe. No request body, response body, credentials or query string is included.

All advertised interface observations (2)

Only exact URL, binding and version matches from the current card appear. Missing checks remain untested.

  • HTTP+JSON · 0.3.0 · Selected connection

    https://api.hergertsynthora.com/v1/mcpscan

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:01 UTC

    Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

  • JSONRPC · 0.3.0

    https://api.hergertsynthora.com/v1/a2a

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:01 UTC

    Advertised JSON-RPC endpoint returned HTTP 404 without a matching A2A response. Publish a JSON-RPC service URL supporting POST tasks/get (0.3) or GetTask (1.0); a website or ordinary resource URL is not sufficient

  1. Advertise the real HTTP+JSON service base URL; the standard task route is resolved relative to it.
  2. Check deployment routes and reverse-proxy forwarding. A homepage, documentation page or ordinary paid resource is not automatically an A2A endpoint.
  3. Implement genuine task lookup and its standard missing-task response. Do not hard-code a reply specifically for LocalMark.
  4. Publish the actual URL, binding and A2A version implemented by your service, then request a fresh check from the individual repair page.

Repair and recheck Prove publisher control

Open Agent Card ↗ · Agent profile

Real-time and historical OHLCV candles (open/high/low/close/volume) for any crypto pair, aGeneric HTTP 404 · HTTP 404 · 28 Oct 2026, 09:01 UTChttps://api.hergertsynthora.com/v1/ohlcv-candlesExpand diagnostics and fixes

Stored connection evidence

unconfirmed · HTTP 404 · 28 Oct 2026, 09:01 UTC

Advertised service URL
https://api.hergertsynthora.com/v1/ohlcv-candles
Binding and version
HTTP+JSON · 0.3.0
Observed attempt 1
GET /v1/ohlcv-candles/v1/tasks/localmark-probe-672b8d85-0a5c-4b19-9fee-c41c065614f6
A2A-Version header
0.3
Observed status
HTTP 404

Captured from the bounded read-only probe. No request body, response body, credentials or query string is included.

All advertised interface observations (2)

Only exact URL, binding and version matches from the current card appear. Missing checks remain untested.

  • HTTP+JSON · 0.3.0 · Selected connection

    https://api.hergertsynthora.com/v1/ohlcv-candles

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:01 UTC

    Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

  • JSONRPC · 0.3.0

    https://api.hergertsynthora.com/v1/a2a

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:01 UTC

    Advertised JSON-RPC endpoint returned HTTP 404 without a matching A2A response. Publish a JSON-RPC service URL supporting POST tasks/get (0.3) or GetTask (1.0); a website or ordinary resource URL is not sufficient

  1. Advertise the real HTTP+JSON service base URL; the standard task route is resolved relative to it.
  2. Check deployment routes and reverse-proxy forwarding. A homepage, documentation page or ordinary paid resource is not automatically an A2A endpoint.
  3. Implement genuine task lookup and its standard missing-task response. Do not hard-code a reply specifically for LocalMark.
  4. Publish the actual URL, binding and A2A version implemented by your service, then request a fresh check from the individual repair page.

Repair and recheck Prove publisher control

Open Agent Card ↗ · Agent profile

SYNTHORA Perps SnapshotGeneric HTTP 404 · HTTP 404 · 28 Oct 2026, 09:06 UTChttps://api.hergertsynthora.com/v1/perpsExpand diagnostics and fixes

Stored connection evidence

unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

Advertised service URL
https://api.hergertsynthora.com/v1/perps
Binding and version
HTTP+JSON · 0.3.0
Observed attempt 1
GET /v1/perps/v1/tasks/localmark-probe-983ad647-c7a3-4693-874f-c3696fd4f827
A2A-Version header
0.3
Observed status
HTTP 404

Captured from the bounded read-only probe. No request body, response body, credentials or query string is included.

All advertised interface observations (2)

Only exact URL, binding and version matches from the current card appear. Missing checks remain untested.

  • HTTP+JSON · 0.3.0 · Selected connection

    https://api.hergertsynthora.com/v1/perps

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

  • JSONRPC · 0.3.0

    https://api.hergertsynthora.com/v1/a2a

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:06 UTC

    Advertised JSON-RPC endpoint returned HTTP 404 without a matching A2A response. Publish a JSON-RPC service URL supporting POST tasks/get (0.3) or GetTask (1.0); a website or ordinary resource URL is not sufficient

  1. Advertise the real HTTP+JSON service base URL; the standard task route is resolved relative to it.
  2. Check deployment routes and reverse-proxy forwarding. A homepage, documentation page or ordinary paid resource is not automatically an A2A endpoint.
  3. Implement genuine task lookup and its standard missing-task response. Do not hard-code a reply specifically for LocalMark.
  4. Publish the actual URL, binding and A2A version implemented by your service, then request a fresh check from the individual repair page.

Repair and recheck Prove publisher control

Open Agent Card ↗ · Agent profile

Search prediction markets ACROSS PLATFORMS (Polymarket + Kalshi) in one callGeneric HTTP 404 · HTTP 404 · 28 Oct 2026, 09:02 UTChttps://api.hergertsynthora.com/v1/polymarket-marketsExpand diagnostics and fixes

Stored connection evidence

unconfirmed · HTTP 404 · 28 Oct 2026, 09:02 UTC

Advertised service URL
https://api.hergertsynthora.com/v1/polymarket-markets
Binding and version
HTTP+JSON · 0.3.0
Observed attempt 1
GET /v1/polymarket-markets/v1/tasks/localmark-probe-9fd995b2-f9b9-4531-a3d6-12215d915716
A2A-Version header
0.3
Observed status
HTTP 404

Captured from the bounded read-only probe. No request body, response body, credentials or query string is included.

All advertised interface observations (2)

Only exact URL, binding and version matches from the current card appear. Missing checks remain untested.

  • HTTP+JSON · 0.3.0 · Selected connection

    https://api.hergertsynthora.com/v1/polymarket-markets

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:02 UTC

    Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

  • JSONRPC · 0.3.0

    https://api.hergertsynthora.com/v1/a2a

    unconfirmed · HTTP 404 · 28 Oct 2026, 09:02 UTC

    Advertised JSON-RPC endpoint returned HTTP 404 without a matching A2A response. Publish a JSON-RPC service URL supporting POST tasks/get (0.3) or GetTask (1.0); a website or ordinary resource URL is not sufficient

  1. Advertise the real HTTP+JSON service base URL; the standard task route is resolved relative to it.
  2. Check deployment routes and reverse-proxy forwarding. A homepage, documentation page or ordinary paid resource is not automatically an A2A endpoint.
  3. Implement genuine task lookup and its standard missing-task response. Do not hard-code a reply specifically for LocalMark.
  4. Publish the actual URL, binding and A2A version implemented by your service, then request a fresh check from the individual repair page.

Repair and recheck Prove publisher control

Open Agent Card ↗ · Agent profile

Practical repair guides

Build a genuine A2A server with the official Python SDK ↗ or official JavaScript SDK ↗. Follow the A2A protocol documentation ↗ for your supported version. Connect your real agent executor and task store; do not add a special probe-passing endpoint.

Fix a route that returns HTTP 404

For JSON-RPC, publish the exact HTTPS application route that accepts A2A POST requests. A homepage, documentation page or normal resource such as /weather is not a substitute. Check that your application and reverse proxy route the same address.

For HTTP+JSON, advertise the A2A service base URL. LocalMark derives the standard read-only task route: /v1/tasks/{id} for A2A 0.3, or /tasks/{id} for A2A 1.0. Avoid duplicating an existing /v1 prefix.

A standard A2A “task not found” error may correctly use HTTP 404. A generic missing webpage is different. Implement real task lookup and its standard error behavior; do not return a hard-coded success for LocalMark.

Fix a route that returns HTTP 405

Compare the request method shown on each listing with the method your application and reverse proxy allow. JSON-RPC uses POST. HTTP+JSON task lookup uses GET on the version-specific task route.

If the observed Allow header contains only GET, HEAD for a declared JSON-RPC route, the card may point to a website or a read-only REST resource. Advertise the real A2A route, or implement the declared A2A interface there. Do not simply allow POST on an unrelated handler.

Keep authentication, authorization and TLS checks in place. A method being accepted is not protocol confirmation; the handler must actually speak A2A.

Implement the declared task lookup

A2A 0.3 JSON-RPC uses tasks/get; A2A 1.0 uses GetTask. Declare the version your service implements and implement its task lookup and missing-task error using your A2A framework’s real task handling.

Both versions use a request shaped like the example below, with the version-specific method. Use a task ID that does not exist. This is a request example, not a response to copy into your server.

{
  "jsonrpc": "2.0",
  "id": "publisher-readonly-check",
  "method": "tasks/get",
  "params": {"id": "nonexistent-example-task"}
}

For A2A 1.0, change the method to GetTask and send A2A-Version: 1.0. A generic JSON-RPC error alone does not confirm A2A. The probe never sends a message or creates a task.

Check versions, bindings and legitimate access limits

Match the Agent Card schema to the protocol version your service implements. A2A 0.2 and 0.3 use top-level protocolVersion, url and preferredTransport; optional additionalInterfaces entries use transport. A2A 1.0 uses supportedInterfaces, with url, protocolBinding and protocolVersion in each entry. The individual repair page shows an excerpt for that declared version.

JSON-RPC, HTTP+JSON and gRPC are different bindings. An MCP release date, OpenAPI version or the agent’s software version is not its A2A protocol version. Consult the 0.2 specification ↗, 0.3 specification ↗ or 1.0 specification ↗ for the complete card.

LocalMark checks up to three explicitly advertised supported interfaces, with bounded requests. It never guesses hidden paths. Authentication requirements, unsupported transports, temporary network failures and incomplete replies remain separate honest observations.

Do not remove required authentication just to obtain a badge. A protected or untested interface can remain in the all-agents directory without a confirmed public A2A response.

Keep the confirmation standard intact

Only a recognizable A2A response to a bounded read-only task lookup confirms A2A. Generic HTTP errors, ordinary JSON-RPC responses, authentication requirements and untested transports do not qualify. Confirmation is not task performance, identity, safety or endorsement.

Stored observations of currently public, canonical listings. Opening or downloading this report does not contact an agent, run a task or send email.

After a genuine fix is live, open the agent’s repair page and request a rate-limited read-only recheck. Completing a recheck does not mean it passed, approve a held listing or prove task quality.

Publisher overview · Check an Agent Card · Set up optional capability tests