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The state of agent tools

What our own probes see across 93,740 listings (x402 APIs, MCP servers and A2A agents): how many answer, which protocol versions they speak, how ready they are for an agent to call, and what they charge.

As of 2026-11-12 01:39 UTC Methodology JSON CSV Cite

How many agent tools actually work, and why the rest do not

Indexed
93,740
▼ 2 vs 30d ago
Listings in our index
Reachable
69,390
▼ 144 vs 30d ago
74.0% of indexed · Answered the last probe
Protocol verified
45,764
▲ 118 vs 30d ago
48.8% of indexed · 402 challenge · MCP handshake · A2A JSON-RPC
Readiness A or B
40,674
▲ 914 vs 30d ago
43.4% of indexed · Ready for an agent to call
01 · Funnel

Only 58.1% of indexed MCP servers complete a full handshake, and 29.6% of A2A agents answer JSON-RPC.

Each step keeps only the listings that passed the one before. Indexed is everything any source lists; the last step is our readiness grade A or B.

x402 APIs

  1. Indexed24,506
    100.0% of indexed
  2. Has an endpoint24,506
    100.0% of indexed · 100.0% of previous
  3. Reachable10,060
    41.1% of indexed · 41.1% of previous
  4. Valid 402 challenge seen7,658
    31.2% of indexed · 76.1% of previous
  5. Readiness A or B5,226
    21.3% of indexed · 68.2% of previous

MCP servers

  1. Indexed61,862
    100.0% of indexed
  2. Has a remote endpoint61,239
    99.0% of indexed · 99.0% of previous
  3. Reachable53,021
    85.7% of indexed · 86.6% of previous
  4. Full handshake (initialize + tools/list)35,921
    58.1% of indexed · 67.7% of previous
  5. Readiness A or B34,478
    55.7% of indexed · 96.0% of previous

A2A agents

  1. Indexed7,372
    100.0% of indexed
  2. Has an Agent Card URL7,277
    98.7% of indexed · 98.7% of previous
  3. Card fetched6,309
    85.6% of indexed · 86.7% of previous
  4. Answers JSON-RPC2,185
    29.6% of indexed · 34.6% of previous
  5. Readiness A or B970
    13.2% of indexed · 44.4% of previous
Measured 2026-11-12 01:39 UTC from the latest probe of every listing. Method JSON
02 · Sources

41.8% of MCP servers are listed by more than one directory.

Which directories and registries list what we index, and how many of their listings answered our last probe. A listing found by several sources is counted once in the index.

x402 APIs

SourceListingsReachable
x402scan15,26524.6%
cdp-bazaar4,49262.7%
own crawl of MCP listings3,80286.9%
own x402 crawl2,18688.3%
own crawl of A2A cards1,63579.4%
paygent-discover1,46755.3%
awesome-x40284265.9%
provider submissions77568.1%
Listed by more than one source: 19.6%

MCP servers

SourceListingsReachable
mcp-registry41,05290.8%
agenstry19,53979.3%
own /.well-known crawl17,66093.5%
smithery13,41282.6%
capkey9,48496.6%
pulsemcp5,33180.0%
chiark2,98668.7%
apify80290.1%
Listed by more than one source: 41.8%

A2A agents

SourceListingsReachable
agenstry5,29287.0%
own /.well-known crawl2,48491.0%
a2a-registry1,03992.2%
a2aregistry87783.8%
provider submissions15589.0%
chiark950.0%
awesome-a2a5090.0%
manual1172.7%
Listed by more than one source: 24.0%
Source membership as recorded by our crawlers; reachability from the latest probe. Method JSON
03 · Protocols

29.3% of reachable A2A agents declare 1.x; 1.3% carry a signature that verifies.

The protocol revision each reachable listing reports: the MCP version returned by initialize, the A2A version declared in the Agent Card, and the x402 version seen in the 402 challenge.

MCP protocol version

RevisionShareCount%
2026-07-28
4,016 7.6%
2025-11-25
18,697 35.3%
2025-06-18
5,496 10.4%
2025-03-26
7,043 13.3%
2024-11-05
1,401 2.6%
Non-standard
20 0.0%
Not reported
16,348 30.8%

A2A protocol version

DeclaredShareCount%
1.x
1,846 29.3%
0.3
2,272 36.0%
0.2 and older
139 2.2%
Other
92 1.5%
Not declared
1,960 31.1%

Agent Card signatures: 84 verify, 229 present but do not verify, 5,996 unsigned.

x402 version (resource probe)

VersionShareCount%
v2
1,700 22.2%
v1
244 3.2%
Not recorded
5,714 74.6%
Reachable listings only, as of 2026-11-12 01:39 UTC. Method JSON
04 · Readiness

Reachable A2A agents lose the most readiness points on Live JSON-RPC and JWS signature.

Readiness grades whether an agent could call the listing today: protocol checks, declarations, uptime and freshness. It is shown on each listing and does not change search order, which uses the quality score.

ProtocolGrade mixABCDF
x402 APIs 1,250
5.1%
3,976
16.2%
3,277
13.4%
10,211
41.7%
5,792
23.6%
MCP servers 782
1.3%
33,696
54.5%
2,381
3.8%
15,974
25.8%
9,029
14.6%
A2A agents 52
0.7%
918
12.5%
1,577
21.4%
2,498
33.9%
2,327
31.6%

Where reachable A2A agents lose points (average per agent)

Live JSON-RPC
−13.9
JWS signature
−9.8
Verified identity
−6.3
Protocol version
−5.2
Security declaration
−4.4
Skill declaration
−3.1
Freshness + modern flags
−2.2
Valid Agent Card
−0.6
Uptime (30 days)
0
Grades stored by the daily readiness job. Method JSON
05 · Reliability

Median response is 326 ms for MCP and 205 ms for x402.

30-day uptime counts only listings with at least five probes; probes a host refused (HTTP 429, or a 403 we were not let through) are left out. Latency is the last successful probe from our server.

x402 APIs

Median latency
205 ms
p95 latency
1,031 ms

30-day uptime (23,910 tracked)

UptimeShareCount%
100%
8,770 36.7%
95–99%
209 0.9%
80–94%
609 2.5%
50–79%
570 2.4%
<50%
13,752 57.5%

MCP servers

Median latency
326 ms
p95 latency
1,175 ms

30-day uptime (59,329 tracked)

UptimeShareCount%
100%
47,160 79.5%
95–99%
2,544 4.3%
80–94%
1,475 2.5%
50–79%
726 1.2%
<50%
7,424 12.5%

A2A agents

Median latency
398 ms
p95 latency
1,200 ms

30-day uptime (0 tracked)

Probe history is still building; uptime appears once listings have five probes.

Probe history of the last 30 days, as of 2026-11-12 01:39 UTC. Method JSON
06 · x402 economy

The median x402 API's cheapest call costs $0.01; 67.2% charge a cent or less.

Prices are the cheapest call each reachable API advertises in its payment terms, in USD. They are list prices, not revenue. Payment evidence says how we know a listing takes payment at all.

Cheapest call per API (6,867 priced)

p10
$0.001
p25
$0.005
p50
$0.01
p75
$0.02
p90
$0.1
Price bandShareCount%
≤ $0.001
723 10.5%
≤ $0.005
1,106 16.1%
≤ $0.01
2,785 40.6%
≤ $0.05
1,284 18.7%
≤ $0.10
313 4.6%
≤ $1
494 7.2%
> $1
162 2.4%

Settlement network

NetworkShareCount%
Base
6,937 90.6%
Solana
300 3.9%
Not recorded
197 2.6%
Polygon
61 0.8%
Testnets
34 0.4%
Arc
11 0.1%
Stripe
9 0.1%
Other
109 1.4%

Payment evidence

Strongest evidenceShareCount%
Live 402 challenge
7,658 76.1%
x402 manifest
2,062 20.5%
CDP Bazaar feed
16 0.2%
Catalog listing only
323 3.2%
No evidence
1 0.0%
Reachable x402 APIs, latest 402 challenge. Method JSON
07 · Access

72.8% of reachable MCP servers do not say how to authenticate.

How a caller is expected to authenticate, as declared by the listing. MCP servers that accept x402 are counted as pay-per-call even when they also take a key.

MCP servers

Declared accessShareCount%
Open (declared)
185 0.3%
API key or token
14,047 26.5%
OAuth
137 0.3%
x402 pay-per-call
30 0.1%
Not declared
38,622 72.8%

A2A agents (Agent Card security)

Declared schemeShareCount%
mTLS
75 1.2%
OAuth2 + PKCE
120 1.9%
Other declared scheme
1,055 16.7%
Declared public
347 5.5%
Not declared
4,712 74.7%
Reachable listings, declarations only; we do not attempt to log in. Method JSON
08 · Safety

36 MCP servers are flagged by our static safety scan.

A static scan of MCP tool names and descriptions for prompt-injection and data-exfiltration patterns. Flagged servers stay listed with a warning; a clean result is not a security review.

Verdicts (61,239 scanned)

clean
61,203
suspicious
35
malicious
1

Rules that fired

tool poisoning coercion
19
prompt injection
7
data exfil coercion
6
bare ip url
2
install lure
1
pipe to shell
1
Scan stored with each MCP listing. Method JSON
09 · Topics

'payment' is 8.7% of reachable A2A agents but 1.7% of MCP servers.

Share of reachable listings whose name or description mentions each topic word. Darker cells mean a larger share; compare across a row to see where one protocol has supply and another has little.

Topicx402 APIsMCP serversA2A agents
ai 22.3% 24.3% 33.3%
search 4.9% 11.7% 7.5%
data 12.4% 9.6% 13.5%
github 3.3% 4.4% 1.1%
payment 8.5% 1.7% 8.7%
code 3.6% 3.2% 3.3%
web 4.9% 2.4% 5.3%
email 2.4% 2.6% 2.7%
video 0.9% 2.6% 1.3%
llm 2.9% 1.5% 4.7%
crypto 4.8% 1.2% 3.9%
wallet 5.1% 0.9% 5.0%
image 1.7% 1.9% 1.1%
pdf 1.2% 1.6% 1.2%
analytics 0.9% 1.6% 1.1%
document 1.2% 1.4% 2.0%
security 2.4% 1.1% 2.7%
social 1.2% 1.4% 1.6%
news 1.4% 1.1% 1.4%
knowledge 0.4% 1.1% 2.2%

Largest gaps

  • payment: 8.7% of A2A agents, 1.7% of MCP servers
  • wallet: 5.1% of x402 APIs, 0.9% of MCP servers
Keyword match on name and description; one listing can count for several topics. Method JSON
10 · Growth

4,669 listings were first seen in the last 7 days.

Listings by the day any source first showed them to us, over the last 30 days. Our crawlers started at different dates, so early spikes partly reflect when a source was added.

x402 APIs

New in 7 days
814
Went down in 7 days
673
2026-10-14: 2392026-10-15: 1672026-10-16: 1842026-10-17: 1732026-10-18: 1692026-10-19: 1652026-10-20: 2982026-10-21: 3072026-10-22: 12672026-10-23: 1412026-10-24: 1932026-10-25: 2292026-10-26: 1582026-10-27: 1702026-10-28: 1392026-10-29: 1362026-10-30: 2962026-10-31: 672026-11-01: 862026-11-02: 1202026-11-03: 1552026-11-04: 1472026-11-05: 1552026-11-06: 982026-11-07: 1042026-11-08: 1132026-11-09: 2212026-11-10: 1422026-11-11: 1362026-11-12: 0
2026-10-142026-11-12

MCP servers

New in 7 days
3,600
Went down in 7 days
540
2026-10-14: 5152026-10-15: 5492026-10-16: 5402026-10-17: 5262026-10-18: 4412026-10-19: 862026-10-20: 8792026-10-21: 6182026-10-22: 30352026-10-23: 5102026-10-24: 4562026-10-25: 4282026-10-26: 6502026-10-27: 3812026-10-28: 5232026-10-29: 3942026-10-30: 8492026-10-31: 5172026-11-01: 4572026-11-02: 6582026-11-03: 6232026-11-04: 5752026-11-05: 5092026-11-06: 4322026-11-07: 4842026-11-08: 5282026-11-09: 8622026-11-10: 6592026-11-11: 6352026-11-12: 0
2026-10-142026-11-12

A2A agents

New in 7 days
255
Went down in 7 days
87
2026-10-14: 352026-10-15: 572026-10-16: 322026-10-17: 522026-10-18: 642026-10-19: 632026-10-20: 672026-10-21: 712026-10-22: 3922026-10-23: 612026-10-24: 502026-10-25: 652026-10-26: 472026-10-27: 372026-10-28: 582026-10-29: 422026-10-30: 542026-10-31: 1372026-11-01: 802026-11-02: 352026-11-03: 492026-11-04: 572026-11-05: 1082026-11-06: 402026-11-07: 282026-11-08: 532026-11-09: 582026-11-10: 382026-11-11: 382026-11-12: 0
2026-10-142026-11-12
First-seen dates from listing sources. Method JSON
11 · Adoption

GitHub data collected so far for 16,071 of 18,491 reachable MCP servers that link a repository; figures fill in over the coming days.

Signals from outside our probes: GitHub stars of the source repository, npm downloads, and where the site ranks in the Tranco top-1M list. They describe attention, not quality, and do not affect search order.

GitHub stars, reachable MCP servers (16,071 with a repo)

StarsShareCount%
0
11,165 69.5%
1–9
4,071 25.3%
10–99
543 3.4%
100–999
166 1.0%
1k–9.9k
104 0.6%
10k+
22 0.1%

Most-starred repositories

com.browser-use/browser-use
browser-use/browser-use
★ 120,690
io.github.IncorporatedPartners/labelhead-artist-momentum
paperclipai/paperclip
★ 113,080
World Monitor
koala73/worldmonitor
★ 90,482
com.ainetcafe/ai-netcafe
ChatGPTNextWeb/NextChat
★ 88,945
Netdata
netdata/netdata
★ 81,367
Front-End Checklist
thedaviddias/Front-End-Checklist
★ 74,706
Context7
upstash/context7
★ 64,598
io.github.tldraw/tldraw
tldraw/tldraw
★ 51,462
Reactive Resume
reactive-resume/reactive-resume
★ 45,629
PostHog MCP Server
PostHog/posthog
★ 40,740

Site rank in Tranco top 1M (list of 2026-11-10)

ProtocolTop 10k10k–100k100k–1MRanked
x402 APIs 5491112 2.6%
MCP servers 3225881,638 4.8%
A2A agents 37123284 7.0%

Ranked by the domain an agent calls (MCP endpoint, x402 URL, A2A interface). Domains behind more than 20 of our listings, hosting platforms and content sites such as youtube.com or github.com are left out.

Most-downloaded npm packages (30 days)

firecrawl-mcp630,896
@launchdarkly/mcp-server273,391
tavily-mcp85,055
@brightdata/mcp73,483
@postman/postman-mcp-server46,496
GitHub and npm refreshed weekly; Tranco list refreshed daily. Method JSON
12 · Searches

People searched 228 times over the last 30 days.

What visitors, API clients and agents type into our search, counted in aggregate. A term is shown only after at least 5 searches; no IP, account or session is stored with it.

Most searched

TermSearchesNo results
council of ai320.0%
equity planning60.0%
hello world agent60.0%
research assistant60.0%
code analysis50.0%
web fetch50.0%

Searched, but mostly nothing found

Demand we cannot serve yet: half or more of these searches returned no listing.

None above the threshold yet.

Scope & limits

Methodology

Every number is a count over the agent-tools.cloud index at the time shown above, recomputed once a day after our probes run. It is not a census of the whole ecosystem: listings no public source has shown us are missing, and private deployments are invisible to us.

Funnel. Reachable means the last probe got a valid answer. Verified means a valid 402 challenge for x402, a full MCP initialize plus tools/list, or an A2A JSON-RPC reply on the declared interface.

Sources. Duplicates across sources are merged by endpoint; each source a listing came from is kept.

Protocols. Versions are what the listing reports or declares; we do not infer them from behaviour. A2A signatures are verified against the key the card points to on its own site.

Readiness. Criteria and weights are on the About page. Points earned from live probes decay after 30 days without a fresh one.

Reliability. One probe per listing per day from one server; latency includes our network path and is not a provider SLA.

x402. Price per API is the lowest amount its payment terms ask for one call, in USD (USDC read at par). The x402 version is counted only where our resource probe recorded it. Settlement network falls back to the chains a listing declares when the challenge does not name one.

Access. Declared by the listing or its card; not tested with credentials.

Safety. Pattern rules over tool metadata only; no code is executed.

Topics. Whole-word match of a fixed word list on name and description. Listings whose text names more than five topics (gateway catalogues) are left out: 1,202 x402 APIs, 170 MCP servers, 54 A2A agents.

Growth. Earliest first-seen date across a listing's sources.

Adoption. GitHub stars and last push from the GitHub REST API for the repository a listing links as its source; npm downloads over 30 days from the npm downloads API for packages published on npm; site rank from the Tranco research list (registrable domain). Several listings can share one repository. These are attention signals, not measures of quality, and are not used for ranking.

Reuse

Cite and download

Free to reuse under CC BY 4.0 with a link to this page. The full snapshot is at /stats.json; headline numbers for every day are at /stats/daily.csv.

agent-tools.cloud. "The state of agent tools." 2026-11-12. https://agent-tools.cloud/stats

@misc{agenttools_stats_20261112,
  author = {agent-tools.cloud},
  title  = {The state of agent tools},
  year   = {2026},
  note   = {Snapshot 2026-11-12 01:39 UTC},
  url    = {https://agent-tools.cloud/stats}
}