A2A Agent Card Cross-SDK Signature Conformance

Per-SDK verdict matrix for signed A2A Agent Cards: which signatures verify in each SDK.

Connector by textforagents.com · Domain verified by the MCP Registry

IndexedLicense unknownRemote (HTTP)

Chalk Labs

Need help deploying A2A Agent Card Cross-SDK Signature Conformance?

Chalk Labs sets up agents like this inside real teams: connected to your tools, tested on your data, with a human in the loop where it matters.

Book a call

Install

Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/textforagents-com-a2a-agent-card-cross-sdk-signature-conformance

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp Remote (HTTP)

Get the weekly diff

The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.

About

Per-SDK verdict matrix for signed A2A Agent Cards: which signatures verify in each SDK.

Reviews

Write a review

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools: 2 read · 0 write · 0 delete · 1 not yet classified
Secrets: None asked for
Install scripts: Nothing to install (hosted)
Runs as: Hosted (remote endpoint)

Tools by what they do 3

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 2 · Look things up without changing anything.

get_check
list_watches

Not yet classified 1 · We could not tell from the name and description.

check_card

Network hosts it talks to 1

textforagents.com · found in remote endpoint, install command

Tools (3)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

check_card
Run one cross-SDK signature conformance verdict check (trial or $0.05 x402 accounting applies).
get_check
Fetch one of your checks by id.
list_watches
List your watches.

Signals

Last release: Oct 22, 2026 (8 days ago)

Details

Registry name: com.textforagents/a2a-agent-card-cross-sdk-signature-conformance
Version: 1.0.0
Auth: Auth not stated
License: License unknown
Website: textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry

Rank

of 44,833 in Connectors

Score

0.494

Security 30%not yet
Popularity 25%0.30
Freshness 20%1.00
Rating 15%not yet
Docs 10%0.62

How ranking works →

Grades

Freshness

Active in the last 30 days. Last activity 8 days ago.

–

Security

Security scan: in progress. Grades from our dependency, secret, code and prompt-injection checks appear here once they launch. Until then, check the code before you install.

Indexed

Found automatically from a public source. Not yet claimed by its publisher.

How grades work →

Availability

100% uptime, last 30 days (1 check)

Last check: 6 days ago
Status: Up
Median response: 773 ms

Up
Up, auth required
Down
Not checked
No data

A daily MCP handshake with the remote endpoint. “Auth required” means it answered and wants a login or key. “Not checked” means the URL needs your own account or blocks automated checks.

Is this yours?

Claim it to add pricing, screenshots and docs, and to get a verified badge.

Claim listing Suggest a fix

Report a security problem

More from textforagents.com

Done for you

Rather not set it up yourself?

Chalk Labs scopes, builds and runs agents for your team: the task audit, the eval harness, the integrations and the weekly ops report. Fixed scope, priced before we start.

See how we build AI agents →Read the case studies

Chalk Labs is a two-founder AI and growth studio. We build AI agents, CRMs and MVPs for Web3 and AI companies, and have shipped 50+ product and token launches.

launches shipped: 50+; launches shipped
media placements: 500+; media placements
founders on every account: 2; founders on every account

Press we've placed: Forbes · CoinDesk · Decrypt · Cointelegraph · The Block

Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

Get A2A Agent Card Cross-SDK Signature Conformance running in your business

Tell us what you want to automate. A founder replies within one working day with a plan, not a pitch deck.

Need help deploying A2A Agent Card Cross-SDK Signature Conformance?

Call Get help

Cite this page

A2A Agent Card Cross-SDK Signature Conformance MCP server. Agent Mart. https://agentmart.dev/connectors/textforagents-com-a2a-agent-card-cross-sdk-signature-conformance (last updated 2026-10-24)