x402 Changes

What changed in the x402 agent-payment ecosystem, last 7 days · by PulseFeed · Observatory · State of x402

went dark

payTo swaps

price changes

recovered

first seen live

Recent events

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.alchemy.com went dark

x402.alchemy.com went dark — no longer returns a valid x402 challenge (unreachable)

8h ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

8h ago

🔴

gpt55.558686.xyz went dark

gpt55.558686.xyz went dark — no longer returns a valid x402 challenge (unreachable)

1d ago

🔴

gpt55.558686.xyz went dark

gpt55.558686.xyz went dark — no longer returns a valid x402 challenge (unreachable)

1d ago

🔴

gpt55.558686.xyz went dark

gpt55.558686.xyz went dark — no longer returns a valid x402 challenge (unreachable)

1d ago

🔴

gpt55.558686.xyz went dark

gpt55.558686.xyz went dark — no longer returns a valid x402 challenge (unreachable)

1d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

1d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

1d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (unreachable)

1d ago

🔴

api.brazilmcp.dev went dark

api.brazilmcp.dev went dark — no longer returns a valid x402 challenge (unreachable)

2d ago

🔴

api.brazilmcp.dev went dark

api.brazilmcp.dev went dark — no longer returns a valid x402 challenge (unreachable)

2d ago

🔴

api.brazilmcp.dev went dark

api.brazilmcp.dev went dark — no longer returns a valid x402 challenge (unreachable)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

x402.professorsausages.com went dark

x402.professorsausages.com went dark — no longer returns a valid x402 challenge (no-402)

2d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

3d ago

🔴

data.crestsystems.ai went dark

data.crestsystems.ai went dark — no longer returns a valid x402 challenge (unreachable)

4d ago

🔴

tensorfeed.ai went dark

tensorfeed.ai went dark — no longer returns a valid x402 challenge (no-402)

4d ago

💲

kronossignals.com price changed

kronossignals.com raised its price $0.001 → $0.01 per call

8h ago

💲

api.osf-master-server.com price changed

api.osf-master-server.com raised its price $0.01 → $0.05 per call

8h ago

💲

store.agentexchange.work price changed

store.agentexchange.work raised its price $0.01 → $0.08 per call

8h ago

💲

defidata.hergertsynthora.com price changed

defidata.hergertsynthora.com raised its price $0.001 → $0.004 per call

1d ago

💲

store.agentexchange.work price changed

store.agentexchange.work raised its price $0.01 → $0.04 per call

2d ago

💲

store.agentexchange.work price changed

store.agentexchange.work raised its price $0.01 → $0.04 per call

2d ago

💲

store.agentexchange.work price changed

store.agentexchange.work raised its price $0.01 → $0.04 per call

2d ago

💲

store.agentexchange.work price changed

store.agentexchange.work raised its price $0.01 → $0.04 per call

2d ago

🟢

crownblock.lonestaroracle.xyz recovered

crownblock.lonestaroracle.xyz is back online (valid x402 challenge again)

8h ago

🟢

chainscout.lonestaroracle.xyz recovered

chainscout.lonestaroracle.xyz is back online (valid x402 challenge again)

8h ago

🟢

agri.lonestaroracle.xyz recovered

agri.lonestaroracle.xyz is back online (valid x402 challenge again)

8h ago

🟢

grid.lonestaroracle.xyz recovered

grid.lonestaroracle.xyz is back online (valid x402 challenge again)

8h ago

🟢

realestate.lonestaroracle.xyz recovered

realestate.lonestaroracle.xyz is back online (valid x402 challenge again)

8h ago

💲

api.osf-master-server.com price changed

api.osf-master-server.com lowered its price $0.08 → $0.05 per call

8h ago

💲

api.osf-master-server.com price changed

api.osf-master-server.com lowered its price $0.08 → $0.05 per call

8h ago

🔀

agents.allium.so payto changed

agents.allium.so rotated its receiver address (by-design rotation)

8h ago

🔀

agents.allium.so payto changed

agents.allium.so rotated its receiver address (by-design rotation)

8h ago

✨

api.invoket.com new service

First seen live by PulseFeed: api.invoket.com ($0.01/call)

8h ago

✨

api.invoket.com new service

First seen live by PulseFeed: api.invoket.com ($0.01/call)

8h ago

🟢

macro.lonestaroracle.xyz recovered

macro.lonestaroracle.xyz is back online (valid x402 challenge again)

1d ago

🔀

x402.browserbase.com payto changed

x402.browserbase.com rotated its receiver address (by-design rotation)

1d ago

🟢

supply.lonestaroracle.xyz recovered

supply.lonestaroracle.xyz is back online (valid x402 challenge again)

1d ago

🟢

metals.lonestaroracle.xyz recovered

metals.lonestaroracle.xyz is back online (valid x402 challenge again)

1d ago

🟢

compute.lonestaroracle.xyz recovered

compute.lonestaroracle.xyz is back online (valid x402 challenge again)

1d ago

🟢

latam.lonestaroracle.xyz recovered

latam.lonestaroracle.xyz is back online (valid x402 challenge again)

1d ago

💲

api.hyperextend.xyz price changed

api.hyperextend.xyz lowered its price $0.121225 → $0.12005 per call

1d ago

💲

gpt55.558686.xyz price changed

gpt55.558686.xyz lowered its price $0.019999 → $0.00293 per call

1d ago

💲

store.agentexchange.work price changed

store.agentexchange.work lowered its price $0.01 → $0.005 per call

1d ago

💲

store.agentexchange.work price changed

store.agentexchange.work lowered its price $0.01 → $0.005 per call

1d ago

💲

x402-agent-store.rileycraig14.workers.dev price changed

x402-agent-store.rileycraig14.workers.dev lowered its price $0.01 → $0.005 per call

1d ago

💲

api.babyblueviper.com price changed

api.babyblueviper.com lowered its price $0.026033 → $0.025261 per call

1d ago

💲

api.babyblueviper.com price changed

api.babyblueviper.com lowered its price $0.152291 → $0.147775 per call

1d ago

💲

api.babyblueviper.com price changed

api.babyblueviper.com lowered its price $0.152291 → $0.147775 per call

1d ago

✨

google-trends.use.x402atlas.com new service

First seen live by PulseFeed: google-trends.use.x402atlas.com ($0.05/call)

1d ago

✨

google-trends.use.x402atlas.com new service

First seen live by PulseFeed: google-trends.use.x402atlas.com ($0.03/call)

1d ago

✨

google-trends.use.x402atlas.com new service

First seen live by PulseFeed: google-trends.use.x402atlas.com ($0.03/call)

1d ago

✨

dns.use.x402atlas.com new service

First seen live by PulseFeed: dns.use.x402atlas.com ($0.005/call)

1d ago

✨

google-trends.use.x402atlas.com new service

First seen live by PulseFeed: google-trends.use.x402atlas.com ($0.03/call)

1d ago

✨

coingecko.use.x402atlas.com new service

First seen live by PulseFeed: coingecko.use.x402atlas.com ($0.005/call)

1d ago

✨

api.bitrefill.com new service

First seen live by PulseFeed: api.bitrefill.com ($0.001/call)

1d ago

✨

dns.use.x402atlas.com new service

First seen live by PulseFeed: dns.use.x402atlas.com ($0.005/call)

1d ago

✨

dns.use.x402atlas.com new service

First seen live by PulseFeed: dns.use.x402atlas.com ($0.005/call)

1d ago

✨

dns.use.x402atlas.com new service

First seen live by PulseFeed: dns.use.x402atlas.com ($0.005/call)

1d ago

✨

coingecko.use.x402atlas.com new service

First seen live by PulseFeed: coingecko.use.x402atlas.com ($0.005/call)

1d ago

✨

coingecko.use.x402atlas.com new service

First seen live by PulseFeed: coingecko.use.x402atlas.com ($0.005/call)

1d ago

✨

coingecko.use.x402atlas.com new service

First seen live by PulseFeed: coingecko.use.x402atlas.com ($0.005/call)

1d ago

✨

coingecko.use.x402atlas.com new service

First seen live by PulseFeed: coingecko.use.x402atlas.com ($0.005/call)

1d ago

✨

coingecko.use.x402atlas.com new service

First seen live by PulseFeed: coingecko.use.x402atlas.com ($0.005/call)

1d ago

✨

x402-agent-store.rileycraig14.workers.dev new service

First seen live by PulseFeed: x402-agent-store.rileycraig14.workers.dev ($0.01/call)

1d ago

💲

gpt55.558686.xyz price changed

gpt55.558686.xyz lowered its price $0.019999 → $0.00293 per call

2d ago

💲

netintel.dev price changed

netintel.dev lowered its price $0.01 → $0.005 per call

2d ago

💲

netintel.dev price changed

netintel.dev lowered its price $0.01 → $0.005 per call

2d ago

💲

netintel.dev price changed

netintel.dev lowered its price $0.01 → $0.005 per call

2d ago

✨

oracle.the-undesirables.com new service

First seen live by PulseFeed: oracle.the-undesirables.com ($0.015/call)

2d ago

💲

api.hyperextend.xyz price changed

api.hyperextend.xyz lowered its price $0.003425 → $0.0034 per call

3d ago

💲

api.babyblueviper.com price changed

api.babyblueviper.com lowered its price $0.019884 → $0.019349 per call

3d ago

💲

api.babyblueviper.com price changed

api.babyblueviper.com lowered its price $0.055674 → $0.054178 per call

3d ago

💲

netintel.dev price changed

netintel.dev lowered its price $0.02 → $0.005 per call

3d ago

💲

netintel.dev price changed

netintel.dev lowered its price $0.01 → $0.005 per call

3d ago

✨

api.invoket.com new service

First seen live by PulseFeed: api.invoket.com ($0.01/call)

3d ago

✨

api.invoket.com new service

First seen live by PulseFeed: api.invoket.com ($0.01/call)

3d ago

✨

api.invoket.com new service

First seen live by PulseFeed: api.invoket.com ($0.01/call)

3d ago

✨

api.invoket.com new service

First seen live by PulseFeed: api.invoket.com ($0.01/call)

3d ago

✨

jeonjang.kr new service

First seen live by PulseFeed: jeonjang.kr

3d ago

✨

mobilitychain.kr new service

First seen live by PulseFeed: mobilitychain.kr

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

api.osf-master-server.com new service

First seen live by PulseFeed: api.osf-master-server.com

3d ago

✨

robotinsight.kr new service

First seen live by PulseFeed: robotinsight.kr

3d ago

🔀

agents.allium.so payto changed

agents.allium.so rotated its receiver address (by-design rotation)

4d ago

🔀

agents.allium.so payto changed

agents.allium.so rotated its receiver address (by-design rotation)

4d ago

✨

orcpin.dev new service

First seen live by PulseFeed: orcpin.dev ($0.01/call)

4d ago

🔀

x402.browserbase.com payto changed

x402.browserbase.com rotated its receiver address (by-design rotation)

5d ago

💲

api.hyperextend.xyz price changed

api.hyperextend.xyz raised its price $0.119975 → $0.121225 per call

5d ago

💲

api.babyblueviper.com price changed

api.babyblueviper.com lowered its price $0.026165 → $0.026033 per call

5d ago

💲

api.babyblueviper.com price changed

api.babyblueviper.com raised its price $0.151631 → $0.152291 per call

5d ago

💲

api.babyblueviper.com price changed

api.babyblueviper.com raised its price $0.151631 → $0.152291 per call

5d ago

✨

api.loyalspark.online new service

First seen live by PulseFeed: api.loyalspark.online ($0.002/call)

5d ago

✨

netintel.dev new service

First seen live by PulseFeed: netintel.dev

5d ago

✨

netintel.dev new service

First seen live by PulseFeed: netintel.dev

5d ago

🟢

agentpay.tools recovered

agentpay.tools is back online (valid x402 challenge again)

6d ago

🟢

agentpay.tools recovered

agentpay.tools is back online (valid x402 challenge again)

6d ago

🟢

agentpay.tools recovered

agentpay.tools is back online (valid x402 challenge again)

6d ago

Why this matters — an x402 endpoint that agents paid yesterday can be dead, hijacked (payTo swapped), or quietly repriced today. PulseFeed is the only source tracking these changes over time.

For agents — verify before you pay: GET /trust?endpoint=<url> → live validity, on-chain receiver profile, scam flags & a pay/avoid verdict.
Machine-readable feed: /changes.json

Events are derived from PulseFeed's own time-series: every tracked endpoint is probed regularly and we record payTo/price/liveness changes as they happen — data that can't be reconstructed after the fact. High-severity payTo swaps on established receivers may indicate a hijack; rotating receivers (by-design) are marked low. Feed window: 7 days · 186 total events · generated 2026-07-29T11:13:10.368Z.
Observatory · State of x402 · Methodology · All services